Page 1 WORKSHOP MANUAL TRACTOR L3130,L3430,L3830, L4630,L5030 KiSC issued 02, 2007 A...
Page 2 TO THE READER This Workshop Manual has been prepared to provide servicing personnel with information on the mechanism, service and maintenance of KUBOTA Tractor L3130, L3430, L3830, L4630 and L5030. It is divided into two parts, “Mechanism” and “Servicing” for each section. Mechanism Information on the construction and function are included.
Page 3 L3130 · L3430 · L3830 · L4630 · L5030, WSM SAFETY INSTRUCTIONS SAFETY INSTRUCTIONS SAFETY FIRST This symbol, the industry’s “Safety Alert Symbol”, is used throughout this manual and on labels on the machine itself to warn of the possibility of personal injury. Read these instructions carefully.
Page 4 L3130 · L3430 · L3830 · L4630 · L5030, WSM SAFETY INSTRUCTIONS SAFETY STARTING • Do not start the engine by shorting across starter terminals or bypassing the safety start switch. • Do not alter or remove any part of machine safety system.
Page 5 L3130 · L3430 · L3830 · L4630 · L5030, WSM SAFETY INSTRUCTIONS VENTILATE WORK AREA • If the engine must be running to do some work, make sure the area is well ventilated. Never run the engine in a closed area. The exhaust gas contains poisonous carbon monoxide.
Page 6: Safety Decals
L3130 · L3430 · L3830 · L4630 · L5030, WSM SAFETY INSTRUCTIONS SAFETY DECALS The following safety decals are installed on the machine. If a decal becomes damaged, illegible or is not on the machine, replace it. The decal part number is listed in the parts list.
Page 7 L3130 · L3430 · L3830 · L4630 · L5030, WSM SAFETY INSTRUCTIONS KiSC issued 02, 2007 A...
Page 8 L3130 · L3430 · L3830 · L4630 · L5030, WSM SAFETY INSTRUCTIONS KiSC issued 02, 2007 A...
Page 9 L3130 · L3430 · L3830 · L4630 · L5030, WSM SAFETY INSTRUCTIONS KiSC issued 02, 2007 A...
Page 10: Specifications
L3130 · L3430 · L3830 · L4630 · L5030, WSM SPECIFICATIONS SPECIFICATIONS ROPS Type L3130 L3430 Model Manual Transmission Model D1503-MA-E-GST-EU D1703-MA-E-GST-EU Type Indirect injection vertical, water-cooled, 4-cycle diesel Number of cylinders Total displacement 1.499 L (91.5 cu.in.) 1.647 L (100.5 cu.in.) 83 ×...
Page 11 L3130 · L3430 · L3830 · L4630 · L5030, WSM SPECIFICATIONS ROPS Type L3830 L4630 Model Manual Transmission Model D1803-MA-E-GST-EU V2203-MA-E-GST-EU Type Indirect injection vertical, water-cooled, 4-cycle diesel Number of cylinders Total displacement 1.826 L (111.4 cu.in.) 2.197 L (134.1 cu.in.) 87 ×...
Page 12 L3130 · L3430 · L3830 · L4630 · L5030, WSM SPECIFICATIONS CABIN Type L3830 L4630 Model Manual Transmission Model D1803-MA-E-GST-EU V2203-MA-E-GST-EU Type Indirect injection vertical, water-cooled, 4-cycle diesel Number of cylinders Total displacement 1.826 L (111.4 cu.in.) 2.197 L (134.1 cu.in.) 87 ×...
Page 13 L3130 · L3430 · L3830 · L4630 · L5030, WSM SPECIFICATIONS CABIN Type L5030 Model Manual Transmission Model V2403-MA-E-GST-EU Type Indirect injection vertical, water-cooled, 4-cycle diesel Number of cylinders Total displacement 2.434 L (148.5 cu.in.) 87 × 102.4 mm (3.4 × 4.0 in.)
Page 14 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRAVELLING SPEEDS TRAVELLING SPEEDS [Manual Transmission Type] Model L3130 L3830 - L4630 Tire size (Rear) 12.4-24 13.6-24 Shuttle shift Range gear shift Main gear shift km/h (mph) km/h (mph) lever...
Page 15 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRAVELLING SPEEDS [With Creep Speed Model] Model L3130 L3830 - L4630 L5030 Creep gear shift lever High High High Tire size (Rear) 12.4-24 13.6-24 13.6-28 Range Shuttle Main gear km/h...
Page 16 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRAVELLING SPEEDS [GST Type (with creep speed model)] Model L4630 L5030 Creep gear shift lever High High Tire size (Rear) 13.6-24 13.6-28 Shuttle shift Main gear shift km/h (mph) km/h (mph)
Page 17 L3130 · L3430 · L3830 · L4630 · L5030, WSM DIMENSIONS DIMENSIONS [L3130, L3430, L3830] KiSC issued 02, 2007 A...
Page 18 L3130 · L3430 · L3830 · L4630 · L5030, WSM DIMENSIONS [L4630, L5030] KiSC issued 02, 2007 A...
Page 19 GENERAL KiSC issued 02, 2007 A...
Page 20: Table Of Contents
GENERAL CONTENTS 1. TRACTOR IDENTIFICATION ................. G-1 2. GENERAL PRECAUTIONS ................G-2 3. HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING .. G-3 [1] WIRING ..................... G-3 [2] BATTERY....................G-5 [3] FUSE......................G-5 [4] CONNECTOR .................... G-5 [5] HANDLING OF CIRCUIT TESTER............G-6 4.
Page 21: Tractor Identification
L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL 1. TRACTOR IDENTIFICATION When contacting your local KUBOTA distributor, always specify engine serial number, tractor serial number and hour meter reading. (1) Tractor Identification Plate (4) Engine Serial Number...
Page 22: General Precautions
L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL 2. GENERAL PRECAUTIONS • During disassembly, carefully arrange removed parts in a clean area to prevent confusion later. Screws, bolts and nuts should be installed in their original position to prevent reassembly errors.
Page 23: Handling Precautions For Electrical Parts And Wiring
L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL 3. HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING To ensure safety and prevent damage to the machine and surrounding equipment, heed the following precautions in handling electrical parts and wiring.
Page 24 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL • Securely clamp, being careful not to damage wiring. (1) Clamp (3) Clamp • Wind Clamp Spirally (4) Welding Dent (2) Wire Harness W10114580 • Clamp wiring so that there is no twist, unnecessary sag, or excessive tension, except for movable part, where sag be required.
Page 25: Battery
L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL [2] BATTERY • Take care not to confuse positive and negative terminal posts. • When removing battery cables, disconnect negative cable first. When installing battery cables, check for polarity and connect positive cable first.
Page 26: Handling Of Circuit Tester
L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL • Use sandpaper to remove rust from terminals. • Repair deformed terminal. Make certain there is no terminal being exposed or displaced. (1) Exposed Terminal (3) Sandpaper (2) Deformed Terminal...
Page 27: Lubricants, Fuel And Coolant
L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL 4. LUBRICANTS, FUEL AND COOLANT Capacity Place Lubricants, fuel and coolant L3130 L3430 L3830 40 L No. 2-D diesel fuel Fuel tank 10.6 U.S.gals No. 1-D diesel fuel if temperature is below −10 °C (14 °F)
Page 28 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Capacity Place Lubricants, fuel and coolant L4630 L5030 40 L 43 L No. 2-D diesel fuel Fuel tank 10.6 U.S.gals 11.4 U.S.gals No. 1-D diesel fuel if temperature is below −10 °C (14 °F)
Page 29 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL NOTE Engine Oil • Oil used in the engine should have an American Petroleum Institute (API) service classification and Proper SAE Engine OIl according to the ambient temperatures as shown above.
Page 30: Tightening Torques
L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL 5. TIGHTENING TORQUES Screws, bolts and nuts whose tightening torques are not specified in this Workshop Manual should be tightened according to tables below. [1] GENERAL USE SCREWS, BOLTS AND NUTS...
Page 31: Maintenance
L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL 6. MAINTENANCE Period Indication on hour meter Reference Important page Item Brake Adjust G-18 Engine oil Change G-15 Engine oil filter Replace G-15 Hydraulic oil filter Replace G-16...
Page 32 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Period Indication on hour meter After purchase Reference Important page 1 year 2 years Item Brake Adjust G-18 Engine oil Change G-15 Engine oil filter Replace G-15 Hydraulic oil filter...
Page 33 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL (Only the Check Points Different from Those for Tractors with CABIN) Period Indication on hour meter Reference Important page Item Clogging of air conditioner Clean Daily – condenser screen...
Page 34: Check And Maintenance
L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL 7. CHECK AND MAINTENANCE CAUTION • Be sure to check and service the tractor on a flat place with engine shut off, the parking brake on and chock the wheels.
Page 35: Check Points Of Initial 50 Hours
L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL [2] CHECK POINTS OF INITIAL 50 HOURS Changing Engine Oil CAUTION • Before changing oil, be sure to stop the engine. • Allow engine to cool down sufficiently, oil can be hot and can burn.
Page 36 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Replacing Hydraulic Oil Filter / Replacing Transmission Oil Filter [HST Type] CAUTION • Be sure to stop the engine before changing the oil filter cartridge. • Allow engine to cool down sufficiently, oil can be hot and can burn.
Page 37 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Changing Transmission Fluid CAUTION • Be sure to stop the engine checking and changing the transmission fluid. • Allow engine to cool down sufficiently, oil can be hot and can burn.
Page 38 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Changing Front Axle Case Oil CAUTION • Be sure to stop the engine before changing the front axle case oil. • Allow engine to cool down sufficiently, oil can be hot and can burn.
Page 39: Check Points Of Every 50 Hours
L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL [3] CHECK POINTS OF EVERY 50 HOURS Greasing 1. Apply a grease to the following position as figures. NOTE • Apply a small amount of multipurpose grease to the following points every 50 hours.
Page 40 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Oiling CAUTION • Be sure to stop the engine and remove the key before oiling. (1) Hand Throttle Cable (2) Foot Throttle Cable (GST/Manual Transmission Type) W1072984 Checking Engine Start System...
Page 41 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Checking Engine Start System (HST Type) 1. Place all control levers in the “NEUTRAL” position. 2. Set the parking brake and stop the engine. Test 1 : Switch for the speed control lever.
Page 42: Check Points Of Every 100 Hours
L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL [4] CHECK POINTS OF EVERY 100 HOURS Changing Engine Oil 1. See page G-15. W10320350 Adjusting Brake Pedal 1. See page G-18. W1075566 Cleaning Air Cleaner Primary Element 1.
Page 43 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Cleaning Fuel Filter This job should not be done in the field, but in a clean place. 1. Close the fuel filter cock (1). 2. Unscrew the screw ring and remove the fuel filter bowl (2), and rinse the inside with kerosene.
Page 44 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Checking Fuel Line CAUTION • Stop the engine when attempting the check and change prescribed below. • Remember to check the fuel line periodically. The fuel line is subject to wear and aging, fuel may leak out onto the running engine, causing a fire.
Page 45 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Checking Battery Condition To avoid the possibility of battery explosion: For the refillable type battery, follow the instructions below. • Do not use or charge the refillable type battery if the fluid level is below the LOWER (lower limit level) mark.
Page 46 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Battery Charging CAUTION • When the battery is being activated, hydrogen and oxygen gases in the battery are extremely explosive. Keep open sparks and flames away from the battery at all times, especially when charging the battery.
Page 47: Check Points Of Every 200 Hours
L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Adjusting Parking Brake Lever CAUTION • Stop the engine and chock the wheels before checking parking brake. 1. Raise the parking brake lever (1) to the parking position while counting the ratchet sound made by the parking brake lever (1).
Page 48 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Adjusting Toe-in 1. Park the tractor on the flat place. 2. Inflate the tires to the specified pressure. 3. Turn steering wheel so front wheels are in the straight ahead position.
Page 49 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Checking HST Oil Line [HST Type] / Checking Power Steering Line 1. Check to see that all lines and hose clamps are tight and not damaged. 2. If hoses and clamps are found worn or damaged, replace repair them at once.
Page 50 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Cleaning Inner Air Filter (Cabin Model) 1. Remove the inner filter, and blow air from the direction opposite to the filter’s normal air flow. (Reference) • Detach and attach the push-rivet (2) as follows.
Page 51: Check Points Of Every 400 Hours
L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Checking Air Conditioner Condenser (Cabin Model) 1. Check the air conditioner condenser (1). 2. If dust and dirt, wash off all dirt and dust from the condenser (1) with a soft brush, use care not to damage or bend the fins.
Page 52: Check Points Of Every 1 Year
L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL [9] CHECK POINTS OF EVERY 1 YEAR Replacing Air Cleaner Primary Element and Secondary Element 1. Replace the both primary and secondary elements. Refer to “Cleaning Air Cleaner Primary Element”. (See page G-22.)
Page 53 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Flushing Cooling System and Changing Coolant CAUTION • Do not remove the radiator cap when the engine is hot. Then loosen cap slightly to the stop to relieve any excess pressure before removing cap completely.
Page 54: Others
L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Flushing Cooling System and Changing Coolant (Continued) Anti-Freeze If coolant freezes, it can damage the cylinders and radiator. It is necessary, if the ambient temperature falls below 0 °C (32 °F), to remove coolant after operating or to add anti-freeze to it.
Page 55 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Draining Clutch Housing Water NOTE • The tractor is equipped with split pin plug (1) under the clutch housing. • After operating in rain, snow or tractor has been washed, water may get into the clutch housing.
Page 56 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Replacing Fuse 1. The tractor electrical system is protected from potential damage by fuses. A blown fuse indicates that there is an overload or short somewhere in the electrical system.
Page 57 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Replacing Light Bulb 1. Head lights and rear combination lights : Take the bulb out of the light body and replace with a new one. 2. Other lights : Detach the lens and replace the bulb.
Page 58 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Checking Refrigerant (Gas) CAUTION • Liquid contact with eyes or skin may cause frostbite. • In the event of a leakage, wear safety goggles. Escaping refrigerant can cause severe injuries to eyes.
Page 59: Special Tools
L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL 8. SPECIAL TOOLS [1] SPECIAL TOOLS FOR ENGINE Special Use Puller Set Code No.: 07916-09032 Application: Use exclusively for pulling out bearing, gears and other parts with ease.
Page 60 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Oil Pressure Tester Code No.: 07916-32032 Application: Use to measure lubricating oil pressure. (1) Gauge (5) Adaptor 2 (2) Cable (6) Adaptor 3 (3) Threaded Joint (7) Adaptor 4...
Page 61 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Plastigage Code No.: 07909-30241 Application: Use to check the oil clearance between crankshaft and bearing, etc. Measuring: Green ..0.025 to 0.076 mm (0.001 to 0.003 in.) range Red ..
Page 62 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL NOTE • The following special tools are not provided, so make them referring to the figure. Valve Guide Replacing Tool Application: Use to press out and press fit the valve guide.
Page 63 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Bushing Replacing Tools Application: Use to press out and to press fit the bushing. (1) For small end bushing 162 mm (6.38 in.) 35 mm (1.38 in.) 27 mm (1.06 in.) 35 mm dia.
Page 64 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Crankshaft Bearing 1 Replacing Tool Application: Use to press out and press fit the crankshaft bearing 1. 1. Extracting tool (D1503, D1703, V2203) 135 mm (5.31 in.) 72 mm (2.83 in.) R40 mm (R1.57 in.)
Page 65 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Balancer Metal Replacing Tool (for Removing) Application: Use to remove the metal bearing. 25 mm (0.98 in. dia.) 41.934 to 41.950 mm dia. (1.6509 to 1.6516 in. dia.) 10 mm (0.39 in.)
Page 66 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Balancer Metal Replacing Tool (for Fitting) Application: Use to press fit the metal bearing. 0.52 rad (30 °) 5 mm (0.20 in.) 10 mm (0.39 in.) 3.3 to 3.7 mm (0.130 to 0.146 in.) Chamfer 0.3 mm (0.01 in.)
Page 67: Special Tools For Tractor
L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL [2] SPECIAL TOOLS FOR TRACTOR Tie-rod End Lifter Code No.: 07909-39051 Application: Use for removing the tie-rod end with ease. W10264720 Steering Wheel Puller Code No.: 07916-51090 Application: Use for removing the steering wheel without damaging the steering shaft.
Page 68 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Rear Axle Cover Puller Code No.: 07916-51041 Application: Use for removing a rear axle cover from rear axle. W10732590 Relief Valve Pressure Tester Code No.: 07916-50045 Application: This allows easy measurement of relief set pressure.
Page 69 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Pinion Locking Tool Code No.: 07916-52311 Application: Use for preventing the shaft from turning when removing or tighten a bevel pinion shaft staking nut. W10445520 Rear Axle Nut Wrench 71 Code No.:...
Page 70 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Hydraulic Arm Shaft Bushing Press-Fitting Tool Application: Use for replacing the hydraulic arm shaft bushings in the hydraulic cylinder body. Right Left 54.7 to 54.9 mm 49.7 to 49.9 mm (2.1535 to 2.1614 in.)
Page 71 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL NOTE • Special tools for R134a refrigerant air conditioning system introduced below are available from NIPPONDENSO CO. LTD. Air Conditioner Service Tool Code No.: DENSO.CO. 95048-00061 Application: Use for charging, testing or discharging the air conditioning system.
Page 72 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Adaptor (For R134a) Code No.: DENSO.CO. 95048-10190 (AC220V) 95048-10200 (AC240V) Application: Use for evacuating the air conditioning system. W1013888 Stopper Magnet Clutch (For A/C Compressor) Application: Use for loosen and tighten the magnet clutch mounting nut.
Page 73 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Valve Adaptor Application: Use for measuring the system pressure of shuttle valve. 24 mm (0.94 in.) 27.7 mm (1.09 in.) PS1/4 11 mm (0.43 in.) 15 mm (0.59 in.) 40 mm (1.57 in.)
Page 74 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Pump Adaptor Application: Use for checking the main hydraulic pump. NOTE • When using, attach with following parts. O-ring : 04811-00180 • This adaptor is modified from Adaptor 61 of flowmeter adaptor set (see page G-48).
Page 75: Tires
L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL 9. TIRES [1] TIRE PRESSURE WARNING • Do not attempt to mount a tire on a rim. This should be done by a qualified person with the proper equipment.
Page 76: Treads Adjustment
L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL [2] TREADS ADJUSTMENT CAUTION • When working on slopes or working with trailer, set the wheel tread as wide as practice for the job for maximum stability. • Support tractor securely on stands before removing a wheel.
Page 77 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Models L3130, L3430 1110 mm 1205 mm 1300 mm 1385 mm 11.2-24 Farm (43.7 in.) (47.4 in.) (51.2 in.) (54.5 in.) L3130, L3430 1110 mm 1205 mm 1300 mm 1385 mm 11.2-24 Farm...
Page 78: Tire Liquid Injection
L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL [3] TIRE LIQUID INJECTION Auxiliary weights can be used to increase traction force for plowing in fields or clayey ground. Another way is to inject water or another liquid, such as a calcium chloride solution in the tires. Water must not be used in winter since it freezes at 0 °C (32 °F).
Page 79 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Injection CAUTION • When a calcium chloride solution is used, cool it before pouring it into the tire. • Do not fill tires with water or solution more than 75 % of full capacity (to the valve stem level).
Page 80 L3130 · L3430 · L3830 · L4630 · L5030, WSM G GENERAL Draining Water or Solution 1. Lift the rear tires off the ground. 2. Turn the tire so that the air valve is at the bottom. 3. Remove the air valve, and drain liquid (liquid can only be drained to the level of the valve and liquid under that level remains inside).
Page 81 ENGINE KiSC issued 02, 2007 A...
Page 82 MECHANISM CONTENTS 1. FEATURES ....................1-M1 2. FUEL SYSTEM ..................... 1-M2 3. LUBRICATING SYSTEM ................1-M3 4. COOLING SYSTEM ..................1-M4 KiSC issued 02, 2007 A...
Page 83: Features
L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE 1. FEATURES The engine model shown in the table below is adopted in the L30 series tractor. These are 03-M series engine. Tractor Model Engine Model L3130 D1503-MA-E L3430...
Page 84: Fuel System
L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE 2. FUEL SYSTEM (1) Fuel Overflow Pipe (4) Fuel Tank (7) Fuel Filter a : Injected Fuel Flow (2) Injection Nozzle (5) Injection Pump Air Vent Pipe (8) Fuel Feed Pump...
Page 85: Lubricating System
L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE 3. LUBRICATING SYSTEM (1) Rocker Arm (2) Oil Pressure Switch (3) Rocker Arm Shaft (4) Valve (5) Governor Shaft (6) Idle Gear (7) Crankshaft (8) Oil Pump (9) Oil Strainer...
Page 86: Cooling System
L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE 4. COOLING SYSTEM (1) Radiator (2) Cooling Fan (3) Thermostat (4) Water Pump (5) Cylinder Head Water Jacket (6) Cylinder Block Water Jacket W1013006 The cooling system consists of a radiator (1), a centrifugal water pump (4), a cooling fan (2) and a thermostat (3).
Page 87 SERVICING CONTENTS 1. TROUBLESHOOTING ..................1-S1 2. SERVICING SPECIFICATIONS ..............1-S4 3. TIGHTENING TORQUES ................1-S11 4. CHECKING, DISASSEMBLING AND SERVICING........1-S12 [1] SEPARATING ENGINE FROM TRACTOR .........1-S12 [2] ENGINE BODY ..................1-S26 (1) Checking and Adjusting ..............1-S26 (2) Disassembling and Assembling ............1-S28 (3) Servicing ...................1-S44 [3] LUBRICATING SYSTEM ...............1-S61 (1) Checking ...................1-S61 (2) Servicing ...................1-S61...
Page 88: Troubleshooting
L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Engine Does Not • No fuel Replenish fuel G-7, 8 Start • Air in the fuel system Bleed G-34 • Water in the fuel system Change fuel and –...
Page 89 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Reference Symptom Probable Cause Solution Page Either Black or Dark • Overload Lessen the load – Gray Exhaust Gas Is • Low grade fuel used Use the specified fuel...
Page 90 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Reference Symptom Probable Cause Solution Page Engine Overheated • Engine oil insufficient Replenish G-7, 8 • Fan belt broken or elongated Change or adjust G-23 • Coolant insufficient Replenish –...
Page 91: Servicing Specifications
L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE 2. SERVICING SPECIFICATIONS ENGINE BODY Item Factory Specification Allowable Limit Cylinder Head Surface Flatness – 0.05 mm / 500 mm 0.0020 in. / 19.69 in. Compression Pressure 3.53 to 4.02 MPa / 2.55 MPa /...
Page 92 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE ENGINE BODY (Continued) Item Factory Specification Allowable Limit Valve Timing (Intake Valve) D1503-M Open 0.14 rad (8 °) – before T.D.C. Close 0.35 rad (20 °) – after B.D.C.
Page 93 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE ENGINE BODY (Continued) Item Factory Specification Allowable Limit Timing Gear Crank Gear to Idle Gear Backlash 0.0415 to 0.1122 mm 0.15 mm 0.00163 to 0.00442 in. 0.0059 in. Idle Gear to Cam Gear Backlash 0.0415 to 0.1154 mm...
Page 94 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE ENGINE BODY (Continued) Item Factory Specification Allowable Limit Balancer Shaft Journal 2 to Balancer Shaft Clearance 0.030 to 0.111 mm 0.2 mm Bearing 2 (Balancer Model Only) 0.00118 to 0.00437 in.
Page 95 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE ENGINE BODY (Continued) Item Factory Specification Allowable Limit Crankshaft Journal to Oil Clearance 0.040 to 0.118 mm 0.2 mm Crankshaft Bearing 1 0.00157 to 0.00465 in. 0.0079 in. Crankshaft Journal D1503-M O.D.
Page 96 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE ENGINE BODY (Continued) Item Factory Specification Allowable Limit Cylinder Bore [Standard] D1503-M I.D. 83.000 to 83.022 mm + 0.15 mm 3.26772 to 3.26858 in. + 0.0059 in. D1703-M 87.000 to 87.022 mm + 0.15 mm...
Page 97 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE COOLING SYSTEM Item Factory Specification Allowable Limit Fan Belt Tension 7.0 to 9.0 mm (0.28 to – 0.35 in.) deflection at 98 N (10 kgf, 22 lbs) of force...
Page 98: Tightening Torques
L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts : See page G-10.) Item N·m...
Page 99: Checking, Disassembling And Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE 4. CHECKING, DISASSEMBLING AND SERVICING [1] SEPARATING ENGINE FROM TRACTOR Draining Engine Oil 1. Start and warm up the engine for approx. 5 minutes. 2. Place an oil pan underneath the engine.
Page 100 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Draining the Transmission Fluid 1. Place oil pans underneath the transmission case. 2. Remove the drain plugs (1). 3. Drain the transmission fluid. 4. Reinstall the drain plugs (1).
Page 101 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Draining Coolant CAUTION • Never remove the radiator cap until coolant temperature is well below its boiling point. Then loosen cap slightly to the stop to relieve any excess pressure before removing cap completely.
Page 102 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE ROPS 1. Remove the lower connector (2). 2. Remove the plate mounting screws (4), (8). 3. Remove the upper frame (1) from ROPS lower frame (5). (When reassembling) NOTE •...
Page 103 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Steering Joint, Heater Hoses and Electric Wiring 1. Remove the tank frame support (2). 2. Remove the universal joint bolt (10) and steering joint support (3), and then remove the steering joint (2).
Page 104 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Clutch Rod, Brake Pedal Rod and Electric Wiring 1. Disconnect the brake pedal rod (5) and clutch rod (4). 2. Disconnect the wiring connectors for alternator (1), coolant temperature sensor (9), oil pressure switch (2), fuel unit (3), starter motor (6) and battery.
Page 105 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Seat, Seat Bracket and Lever Grips 1. Remove the seat (1) with seat bracket. 2. Remove the front wheel drive lever (4). (Manual Transmission Model) 3. Remove the lever grip for position control lever (6), draft control lever (7), range gear shift lever (2), creep shift lever (8), main shift lever (3) and ground PTO lever (5) (if equipped).
Page 106 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Electric Connector for GST 1. Disconnect the ECU connector (1). 2. Disconnect the GST lever sensor connector (2). 3. Remove the GST valve cover. 4. Disconnect the pressure switch connector (4), proportional reducing valve connector (5), solenoid valve connector (6), oil temperature sensor connector (8) and ground cables (7).
Page 107 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE PTO Shift Wire, Parking Brake Cable and Connector 1. Disconnect the parking brake cable (1). 2. Disconnect the PTO shift wire (3) at the PTO clutch valve (5). 3. Disconnect the traveling speed sensor connector (2).
Page 108 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Step and Floor Seat (ROPS Model) 1. Disconnect the panel frame connector (1) from fuel tank frame. 2. Remove the step and floor seat mounting bolt and nut. 3. Dismount the step, fender, floor seat and panel frame as a unit after checking whether there is forgetting to disconnect wiring.
Page 109 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Cabin Assembly 1. Remove the outer roof of cabin. 2. Support the cabin with nylon straps (1) and hoists. 3. Loosen and remove the cabin mounting bolts (2) and nuts (9).
Page 110 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Propeller Shaft 1. Slide the propeller shaft cover (4) and (8) after removing the screws (7). 2. Tap out the spring pins (2), (6) and slide the couplings (1), (5) and then remove the propeller shaft with covers (4), (8).
Page 111 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Radiator Assembly 1. Disconnect the air cleaner hose (3). (ROPS model) 2. Remove the battery (1). (ROPS model) 3. Remove the oil cooler mounting screws. (ROPS model) 4. Remove the battery stay (4). (ROPS model) 5.
Page 112 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Outer Parts of Engine 1. Remove the hydraulic pump (7) with pump holder and regulating valve (6). 2. Remove the radiator fan (1), belt and fan pulley (2). 3. Remove the alternator (3).
Page 113: Engine Body
L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE [2] ENGINE BODY (1) Checking and Adjusting Compression Pressure 1. Run the engine until it is warmed up. 2. Stop the engine and disconnect the 2P connector from the stop solenoid in order to inject fuel.
Page 114 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Valve Clearance IMPORTANT • Valve clearance must be checked and adjusted when engine is cold. 1. Remove the head cover, the glow plugs and the timing window cover on the clutch housing.
Page 115: Disassembling And Assembling
L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Top Clearance 1. Remove the cylinder head. 2. Move the piston up and stick a strip of fuse on the piston head at three position with grease. 3. Lower the piston and install the cylinder head. (Use a new cylinder head gasket and tighten with a specified tightening torque.)
Page 116 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Injection Pipes 1. Loosen the screws on the pipe clamps (1). 2. Detach the injection pipes (2). (When reassembling) • Blow out dust inside the pipes. 24.5 to 34.3 N·m...
Page 117 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Rocker Arm and Push Rod 1. Remove the rocker arm bracket nuts. 2. Detach the rocker arm assembly (1). 3. Remove the push rods (2). (When reassembling) • When putting the push rods (2) onto the tappets (3), check to see if their ends are properly engaged with the grooves.
Page 118 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Tappets 1. Remove the tappets (1) from the crankcase. (When reassembling) • Visually check the contact between tappets and cams for proper rotation. If defect is found, replace tappets.
Page 119 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE (B) Timing Gears, Camshaft and Fuel Camshaft Injection Pump 1. Remove the stop solenoid (1) and hi-idling body (2). 2. Remove the engine stop lever (3) and stop solenoid guide (5).
Page 120 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Governor Springs and Speed Control Plate NOTE • Specific tool (1) : 1.2 mm diameter hard wire with its end hooked, overall length 200 mm (7.87 in.). The tip of wire is bent like the hook to hang governor springs.
Page 121 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Governor Springs and Speed Control Plate (Continued) (When reassembling) • Hook the small spring (4) first and then the large governor spring (2) on the speed control plate (6).
Page 122 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Fan Drive Pulley 1. Lock the flywheel not to turn using the flywheel stopper. 2. Remove the fan drive pulley mounting nut (1). 3. Remove the fan drive pulley (2) with gear puller (3).
Page 123 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Idle Gear (for D1503-M, D1703-M and D1803-M) 1. Remove the external snap ring. 2. Detach the idle gear collar. 3. Detach the idle gear (2). (When reassembling) • Check to see each gear is aligned with its aligning mark...
Page 124 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Camshaft and Balancer Shaft (for V2203-M and V2403-M) 1. Remove the camshaft set bolts and draw out the camshaft (1). 2. Remove the balancer shaft 1 (2) set bolts and draw out the balancer shaft 1 (2).
Page 125 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Crank Gear 1. Draw out the crank gear (1) with a puller (2). 2. Remove the feather key. (1) Crank Gear (2) Gear Puller W1025476 (C) Piston and Connecting Rod Oil Pan and Oil Strainer 1.
Page 126 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Pistons 1. Completely clean carbon (1) in the cylinders. 2. Remove the connecting rad cap (3). 3. Turn the flywheel and bring the piston to top dead center. 4. Draw out the piston upward by lightly tapping it from the bottom of the crankcase with the grip of a hammer.
Page 127 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Piston Ring and Connecting Rod 1. Remove the piston rings (4), (5), (6) using a piston ring tool (Code No. 07909-32121). 2. Remove the piston pin (1), and separate the connecting rod (7) from the piston (2).
Page 128 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE (D) Crankshaft Flywheel 1. Fit the stopper to the flywheel (1). 2. At first, remove two pieces of the flywheel screws (2). 3. Insert two pieces of the flywheel guide screws (3) in the holes.
Page 129 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Crankshaft NOTE • Before disassembling, check the side clearance of crankshaft. Also check it during reassembling. For D1503-M, D1703-M and V2203-M 1. Remove the main bearing case screw 2 (1).
Page 130 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Main Bearing Case Assembly 1. Remove the two main bearing case screws 1 (8), and remove the main bearing case assembly being careful with thrust bearing and crankshaft bearing.
Page 131: Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE (3) Servicing (A) Cylinder Head and Valves Cylinder Head Surface Flatness 1. Clean the cylinder head surface. 2. Place a straightedge on the cylinder head’s four sides and two diagonal as shown in the figure.
Page 132 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Clearance between Valve Stem and Valve Guide 1. Remove carbon from the valve guide section. 2. Measure the valve stem O.D. with an outside micrometer. 3. Measure the valve guide I.D. with a small hole gauge, and calculate the clearance.
Page 133 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Valve Seating 1. Coat the valve face lightly with prussian blue and put the valve on its seat to check the contact. 2. If the valve does not seat all the way around the valve seat or the valve contact is less than 70 %, correct the valve seating as follows.
Page 134 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Valve Lapping 1. Apply compound evenly to the valve lapping surface. 2. Insert the valve into the valve guide. Lap the valve onto its seat with a valve flapper or screwdriver.
Page 135 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Oil Clearance between Rocker Arm and Rocker Arm Shaft 1. Measure the rocker arm shaft O.D. with an outside micrometer. 2. Measure the rocker arm I.D. with an inside micrometer, and then calculate the oil clearance.
Page 136 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE (B) Timing Gears, Camshaft and Fuel Camshaft Timing Gear Backlash 1. Set a dial indicator (lever type) with its tip on the gear tooth. 2. Move the gear to measure the backlash, holding its mating gear.
Page 137 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Camshaft Side Clearance 1. Set a dial indicator with its tip on the camshaft. 2. Measure the side clearance by moving the cam gear to the front and rear.
Page 138 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Oil Clearance of Balancer Shaft Journal (for V2203-M and V2403-M) 1. Measure the balancer shaft journal O.D. with an outside micrometer. 2. Measure the cylinder block bore I.D. for balancer shaft with an inside micrometer or cylinder gauge.
Page 139 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Replacing Idle Gear Bushing (A) (When removing) 1. Using an idle gear bushing replacing tool, press out the used bushing. (B) (When installing) 1. Clean a new idle gear bushing and idle gear bore, and apply engine oil to them.
Page 140 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Oil Clearance of Camshaft Journal 1. Measure the camshaft journal O.D. with an outside micrometer. 2. Measure the cylinder block bore I.D. for camshaft with a cylinder gauge, and calculate the oil clearance.
Page 141 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Replacing Connecting Rod Small End Bushing (A) (When removing) 1. Press out the small end bushing with a connecting rod small end bushing replacing tool. (B) (When installing) 1. Clean a new small end bushing and bore, and apply engine oil to them.
Page 142 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Connecting Rod Alignment NOTE • Since the I.D. of the connecting rod small end bushing is the basis of this check, check bushing for wear beforehand. 1. Install the piston pin into the connecting rod.
Page 143 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Oil Clearance between Crankpin and Crankpin Bearing 1. Clean the crankpin and crankpin bearing. 2. Put a strip of plastigage (Code No.: 07909-30241) on the center of the crankpin in each direction as shown in the figure.
Page 144 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Oil Clearance between Crankshaft Journal and Crankshaft Bearing 1 1. Measure the O.D. of the crankshaft journal with an outside micrometer. 2. Measure the I.D. of the crankshaft bearing 1 with an inside micrometer, and calculate oil clearance.
Page 145 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Oil Clearance between Crankshaft Journal and Crankshaft Bearing 2 1. Put a strip of plastigage on the center of the journal. 2. Install the bearing case and tighten the baring case screws 1 to the specified torque, and remove the bearing case again.
Page 146 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Replacing Crankshaft Sleeve 1. Remove the used crankshaft sleeve using a special-use puller set (Code No.: 07916-32091). 2. Set the sleeve guide (2) to the crankshaft. 3. Set the stopper (1) to the crankshaft as shown in figure.
Page 147 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Correcting Cylinder (Oversize +0.25 mm) 1. When the cylinder is worn beyond the allowable limit, bore and hone it to the specified dimension. 83.250 to 83.272 mm D1503-M 3.2776 to 3.2784 in.
Page 148: Lubricating System
L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE [3] LUBRICATING SYSTEM (1) Checking Engine Oil Pressure 1. Remove the engine oil pressure switch, and set a oil pressure tester (Code No.: 07916-32032). 2. Start the engine. After warming up, measure the oil pressure of both idling and rated speeds.
Page 149: Cooling System
L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Clearance between Rotor and Cover 1. Put a strip of plastigage (Code No.: 07909-30241) onto the rotor face with grease. 2. Install the cover and tighten the screws. 3. Remove the cover carefully, and measure the width of the press gauge with a sheet of gauge.
Page 150 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE Thermostat Valve Opening Temperature 1. Suspend the thermostat in the water by a string with its end inserted between the valve and seat. 2. Heating the water gradually, read the temperature when the valve opens and leaves the string.
Page 151: Fuel System
L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE [5] FUEL SYSTEM (1) Checking and Adjusting (A) Injection Pump Injection Timing 1. Remove the stop solenoid. 2. Remove the injection pipes and nozzle. 3. Set the speed control lever to maximum fuel discharge position.
Page 152 L3130 · L3430 · L3830 · L4630 · L5030, WSM ENGINE (B) Injection Nozzle CAUTION • Check the nozzle injection pressure and condition after confirming that there is nobody standing in the direction the fume goes. If the fume from the nozzle directly contacts the human body, cells may be destroyed and blood poisoning may be caused.
Page 153 CLUTCH KiSC issued 02, 2007 A...
Page 154 MECHANISM CONTENTS 1. FEATURE ...................... 2-M1 KiSC issued 02, 2007 A...
Page 155 L3130 · L3430 · L3830 · L4630 · L5030, WSM CLUTCH 1. FEATURE The dry single plate with diaphragm spring type clutch is adapted for all models. This clutch is operated with the hanging type pedal, and the pedal (5) and release fork (3) have been linked as shown in figure.
Page 156 SERVICING CONTENTS 1. TROUBLESHOOTING ..................2-S1 2. SERVICING SPECIFICATIONS ..............2-S2 3. TIGHTENING TORQUES ................2-S3 4. CHECKING, DISASSEMBLING AND SERVICING........2-S4 [1] CHECKING AND ADJUSTING ...............2-S4 [2] DISASSEMBLING AND ASSEMBLING..........2-S5 (1) Separating Clutch Housing and Engine ..........2-S5 (2) Removing Clutch Assembly ..............2-S14 [3] SERVICING ....................2-S15 KiSC issued 02, 2007 A...
Page 157: Troubleshooting
L3130 · L3430 · L3830 · L4630 · L5030, WSM CLUTCH 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Clutch Drags • Clutch pedal free play excessive Adjust 2-S4 • Dust on clutch disc generated from clutch Remove rust –...
Page 158: Servicing Specifications
L3130 · L3430 · L3830 · L4630 · L5030, WSM CLUTCH 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Clutch Pedal Free play 20 to 30 mm – 0.78 to 1.18 in. Clutch Stopper Bolt Height 18 to 22 mm –...
Page 159: Tightening Torques
L3130 · L3430 · L3830 · L4630 · L5030, WSM CLUTCH 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts : See page G-10.) Item N·m...
Page 160: Checking, Disassembling And Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM CLUTCH 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING Clutch Pedal Free Travel CAUTION • When checking, park the tractor on flat ground, apply the parking brake, stop the engine and remove the key.
Page 161: Disassembling And Assembling
L3130 · L3430 · L3830 · L4630 · L5030, WSM CLUTCH [2] DISASSEMBLING AND ASSEMBLING (1) Separating Clutch Housing and Engine Draining the Transmission Fluid 1. Place oil pans underneath the transmission case. 2. Remove the drain plugs (1). 3. Drain the transmission fluid.
Page 162 L3130 · L3430 · L3830 · L4630 · L5030, WSM CLUTCH Battery, Front Grill, Skirt and Bonnet 1. Open the bonnet and disconnect the battery negative cable. 2. Disconnect the head light connector and remove the front grill (4). 3. Remove the left and right side skirts (3).
Page 163 L3130 · L3430 · L3830 · L4630 · L5030, WSM CLUTCH Steering Joint, Heater Hoses and Electric Wiring 1. Remove the tank frame support (2). 2. Remove the universal joint bolt (10) and steering joint support (3), and then remove the steering joint (2).
Page 164 L3130 · L3430 · L3830 · L4630 · L5030, WSM CLUTCH Clutch Rod, Brake Pedal Rod and Electric Wiring 1. Disconnect the brake pedal rod (5) and clutch rod (4). 2. Disconnect the wiring connectors for alternator (1), coolant temperature sensor (9), oil pressure switch (2), fuel unit (3), starter motor (6) and battery.
Page 165 L3130 · L3430 · L3830 · L4630 · L5030, WSM CLUTCH Seat, Seat Bracket and Lever Grips 1. Remove the seat (1) with seat bracket. 2. Remove the front wheel drive lever (9). (Manual Transmission Model) 3. Remove the lever grip for position control lever (6), draft control lever (7), range gear shift lever (2), creep shift lever (8), main shift lever (3) and ground PTO lever (5) (if equipped).
Page 166 L3130 · L3430 · L3830 · L4630 · L5030, WSM CLUTCH Electric Connector for GST 1. Disconnect the ECU connector (1). 2. Disconnect the GST lever sensor connector (2). 3. Remove the GST valve cover. 4. Disconnect the pressure switch connector (4), proportional reducing valve connector (5), solenoid valve connector (6), oil temperature sensor connector (8) and ground cables (7).
Page 167 L3130 · L3430 · L3830 · L4630 · L5030, WSM CLUTCH Shuttle Switch Connector (Manual and GST Model) 1. Remove the panel cover and steering post cover. 2. Disconnect the shuttle switch connector (1). (1) Shuttle Switch Connector W1020239 Cruise Control Release Wire (HST Model) 1.
Page 168 L3130 · L3430 · L3830 · L4630 · L5030, WSM CLUTCH Air Conditioner Parts (Cabin A/C Model) 1. Remove the muffler (2). 2. Remove the air conditioner belt (4) and remove the compressor (1) mounting screw. 3. Remove the recovery tank (6) and window washer tank (7).
Page 169 L3130 · L3430 · L3830 · L4630 · L5030, WSM CLUTCH Hydraulic Pipes 1. Remove the main delivery pipe 1 (2). 2. Remove the PTO delivery pipe (3). (Manual and GST model) 3. Disconnect the suction hose (1) from hydraulic pump.
Page 170: Removing Clutch Assembly
L3130 · L3430 · L3830 · L4630 · L5030, WSM CLUTCH Separating Engine and Clutch Housing 1. Place the disassembling stand under the engine and clutch housing case. 2. Remove the fuel tank support mounting screws. 3. Remove the engine and clutch housing mounting screws and nuts.
Page 171: Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM CLUTCH Release Holder and Clutch Lever 1. Draw out the clutch release hub (6) and the release bearing (4) as a unit. 2. Remove the release fork setting screws (2).
Page 172 L3130 · L3430 · L3830 · L4630 · L5030, WSM CLUTCH Checking Pressure Plate Assembly and Flywheel 1. Wash the disassembling parts except clutch disc with a suitable cleaning solvent to remove dirt and grease before making inspection and adjustment.
Page 173 TRANSMISSION KiSC issued 02, 2007 A...
Page 174 MECHANISM CONTENTS 1. MANUAL TRANSMISSION MODEL ............3-M1 [1] STRUCTURE ................... 3-M1 [2] POWER TRAIN FOR TRAVELING GEAR........... 3-M3 (1) Main Gear Shift Section ..............3-M3 (2) Shuttle Shift Section................3-M3 (3) Range Gear Shift Section ..............3-M4 (4) Front Wheel Drive Section ..............3-M4 (5) Creep Gear Shift Section ..............
Page 175: Manual Transmission Model
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION 1. MANUAL TRANSMISSION MODEL [1] STRUCTURE Standard Type (with Creep Speed) (1) Main Gear Shift Section (4) Range Gear and Creep Gear (5) PTO Gear Shift Section (6) Front Wheel Drive Shift...
Page 176 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Ground PTO Type (without Creep Speed) (1) Main Gear Shift Section (4) Range Gear Shift Section (6) Front Wheel Drive Shift (7) Ground PTO Gear SHift (2) PTO Clutch Section...
Page 177: Power Train For Traveling Gear
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION [2] POWER TRAIN FOR TRAVELING GEAR The transmission consists of a series of gears and shafts as shown in previous page. The traveling system consists of main gear shift section, shuttle shift section, range gear shift section and front wheel drive section.
Page 178: Range Gear Shift Section
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (3) Range Gear Shift Section The range gear shift section is located in the differential gear case, and it uses constant mesh. (1) Shuttle Gear Shaft (6) Counter Gear...
Page 179: Creep Gear Shift Section
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (5) Creep Gear Shift Section The creep speed section is located under the N-C range gear shift section to reduce a travelling speed. It is shifted by the creep shift lever to shift the shifter (3).
Page 180: Shuttle Shift Lever
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (2) Shuttle Shift Lever The links are connected from the shift lever (1) to the shift fork (7) as shown in the figure. When the shift lever (1) is moved to the F side, the...
Page 181: Creep Gear Shift Lever
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (5) Creep Gear Shift Lever The links are connected from the shift lever (3) to the shift fork (1) as shown in the left figure. When the shift lever (3) is moved to the A side, the...
Page 182: Glide Shift Transmission (Gst) Model
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION 2. GLIDE SHIFT TRANSMISSION (GST) MODEL [1] STRUCTURE (1) Main Gear Shift Section (3) PTO Clutch Section (5) Range Gear Shift Section (6) Front Wheel Drive Shift (2) Clutch Pack for GST...
Page 183: Characteristic And System Outline
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION [2] CHARACTERISTIC AND SYSTEM OUTLINE The GST of a new version is adapted in the L30 series tractor. In addition to the former GST system that controls gear shifting...
Page 184: Power Train
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION [3] POWER TRAIN (1) Main Shift Section (3) Sub-range Shift Section (4) Shuttle Shift Section (5) Main Range Shift Section (2) GST Clutch Pack The transmission is composed of the fully synchronized gear shifting and the hydraulic clutch as shown above figure.
Page 185: Electrical Control System
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION [4] ELECTRICAL CONTROL SYSTEM NOTE • Only the electrical control system concerning the GST operation has been described in this section. Therefore, refer to “ELECTRICAL SYSTEM” section (Section 9) for a general electrical control system.
Page 186 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Electronic Instrument Panel (IntelliPanel) The 8 bits CPU is built into this panel. The electronic instrument panel has functions to receive several data of GST control from the ECU, and output them to the liquid crystal display and the monitor lamps.
Page 187 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Pressure Switch This switch is to detect the gear change completion and hydraulic clutch operation, and it is equipped on the GST valve. This switch is turned ON when the pressure in the GST valve becomes higher than 0.49 MPa (5 kgf/cm...
Page 188: Electrical Control
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (2) Electrical Control An electrical control of GST system is as follows. 1. Shift the GST lever and shuttle lever to desired position. 2. The output voltage of selected gear shift position is output to microcomputer of the ECU by lever sensor.
Page 189: Hydraulic Control System
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION [5] HYDRAULIC CONTROL SYSTEM (1) Hydraulic Circuit and System Outline (1) Regulating Valve Assembly (11) Solenoid Valve 5 (19) 3-4 Shift Check Valve a : To Steering Controller (2) Hydraulic Pump...
Page 190 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION 1. Oil is supplied from the power steering hydraulic pump (2) while running the engine. 2. The oil entering the regulating valve assembly (1) flows through the pressure reducing valve (5) to the GST circuit.
Page 191: Construction And Function Of Components
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (2) Construction and Function of Components (A) Regulating Valve The oil from the hydraulic pump for the power steering system flows to the GST circuit to set the pressure of the circuit.
Page 192 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (B) GST Valve GST Valve Assembly The GST valve assembly is installed at the left side of the transmission mid case. In the GST valve assembly, many parts comprising the system are installed,...
Page 193 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Shift Piston The shift pistons (1), (2), (3), (4) are actuated by the oil distributed by the each solenoid valve. At the tip of these shift pistons (1), (2), (3) are installed the shifters (5), which are connected to each shift rod and shift the gear.
Page 194 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Shift Check Valve The shift check valves (2), (3), (4), (5), (6) are provided on each shift piston and the shuttle shift rod. From the start to the end of gear shifting, the shift...
Page 195 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Low-pass Valve After completion of the gear shifting, the low-pass valve (8) opens immediately to flow oil into the GST clutch (9), to promote the engagement of the clutch.
Page 196 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Proportional Reducing Valve After the gear shifting is completed, this valve has function which gradually rises the pressure in the clutch (4) in order to make a clutch engaging for without shock and smoothly.
Page 197 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Clutch Valve The clutch valve (5) changes the flow of the oil flowing to the GST clutch to carry out “ENGAGE” / “DISENGAGED” of the clutch. Except for during gear shifting, the oil of the pilot circuit flows in from the A-port to push the spool to the right when the pilot circuit is pressurized.
Page 198: Shift Linkage Mechanism
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (C) GST Clutch The GST clutch is hydraulic multiple plate type and is provided between the counter shaft (3) and the shuttle shaft (8), and it “engages” and “disengages” the power from the engine.
Page 199: Hydrostatic Transmission (Hst) Model
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION 3. HYDROSTATIC TRANSMISSION (HST) MODEL [1] STRUCTURE (1) Hydrostatic Transmission (2) PTO Clutch Section (3) Range Gear Shift Section (4) Front Wheel Drive Shift Section Section KiSC issued 02, 2007 A...
Page 200: Power Train
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION [2] POWER TRAIN The transmission of this model consists of a series of gears and shafts as shown in previous page. The traveling system is chiefly composed of hydrostatic transmission section, range gear shift section and front wheel drive section.
Page 201 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (1) Fixed Swashplate (7) Regulator Assembly (13) Cylinder Block (Motor) A : Sectional View W-W (2) Variable Swashplate (8) Port Block Cover (14) Bypass Pipe (Servo Pipe) B : Sectional View X-X...
Page 202 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (B) Oil Flow (1) HST Assembly (8) Hydraulic Pump (14) Check and High Pressure C : From Steering Controller (2) Servo Regulator Assembly (9) Filter Relief Valve D : To PTO Clutch Valve...
Page 203 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (C) Function of Components Servomechanism (1) Control Lever (Connected to (4) Feedback Lever (8) Piston Adjusting Screw A : Slit for Connection of HST Pedal) (5) Control Arm (9) Orifice...
Page 204 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (D) Operation Neutral (1) Transmission Case (7) Regulator Valve Assembly (13) HST Assembly (18) Charge Relief Valve (2) Filter (8) Servo Piston (14) Main Circuit and Steering (19) PTO Clutch Valve Circuit...
Page 205 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Forward (1) Transmission Case (9) Feedback Lever (16) Filter A : Pump Port A (2) Filter (10) HST Pedal (17) Case Relief Valve B : Pump Port B (3) Input Shaft...
Page 206 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Reverse (1) Transmission Case (9) Feedback Lever (16) Filter A : Pump Port A (2) Filter (10) HST Pedal (17) Case Relief Valve B : Pump Port B (3) Input Shaft...
Page 207 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (E) Control Linkage (1) HST Assembly (4) HST Pedal (7) Neutral Rod (10) Neutral Holder Arm (2) HST Control Lever (5) Pedal Bracket (8) Neutral Holder (11) Neutral Spring...
Page 208 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (F) Cruise Control Speed Set (1) HST Pedal (4) Plate (7) Lever Rod (10) Cruise Adjusting Rod (2) Release Lever (5) Rubber (8) Cruise Control Lever (11) Connecting Shaft...
Page 209 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Release (1) Brake Pedal (4) Release Lever (7) Rubber (10) Release Wire (2) Brake Lever (5) Release Spring (8) Cruise Control Lever (11) Cruise Spring (3) Bracket (6) Plate...
Page 210: Range Gear Shift Section
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (2) Range Gear Shift Section The range gar shift section is located in the differential gear case. It changes the speed to five positions (L, N, M, N and H) by shifting of shifter gear (3) in the straight line on bevel pinion shaft (7).
Page 211: Shift Linkage Mechanism
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION [3] SHIFT LINKAGE MECHANISM The shift linkage mechanism of “Front Wheel Drive Lever”, refer to page 3-M6. (1) Range Gear Shift Lever The links are connected from the shift lever (3) to the shift fork (1) as shown in figure.
Page 212: Pto System
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION 4. PTO SYSTEM [1] STRUCTURE (1) PTO Gear Shaft 1 (4) PTO Counter Shaft (7) Output Shaft (Motor Shaft) [A] Manual Transmission Model (2) PTO Gear Shaft 2 (5) PTO Drive Shaft...
Page 213: Pto Clutch
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION The independent PTO operated by hydraulic clutch (3) is adapted for all models. PTO is “ENGAGED” or “DISENGAGED” by operating the shift lever of the PTO clutch valve. The power train from the clutch to the PTO shaft is composed as shown in figure above.
Page 214: Operation
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (3) Operation The oil flows into the clutch valve and opens the check valve (1). When the shift lever is set at the “ENGAGED” position, the spool (2) is turned to (a) position, then the oil flows through the spool (2) into the accumulator and the clutch pack.
Page 215: Ground Pto (If Equipped)
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION [3] GROUND PTO (IF EQUIPPED) (1) Power Train The ground PTO gear section is located in the mid case, and it use constant mesh. It is shifted by the ground PTO shift lever to shift the shifter.
Page 216: Two Stage Pto (If Equipped)
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION [4] TWO STAGE PTO (IF EQUIPPED) (1) Power Train The two stage PTO gear section is located in the mid case, and it uses constant mesh. (1) Gear for High...
Page 217 SERVICING CONTENTS 1. TROUBLESHOOTING ..................3-S1 [1] GENERAL ....................3-S1 [2] GST SYSTEM ..................3-S2 [3] HST SYSTEM ..................3-S8 [4] PTO SYSTEM ..................3-S10 2. SERVICING SPECIFICATIONS ..............3-S11 [1] GENERAL ....................3-S11 [2] PTO CLUTCH ..................3-S12 [3] GST......................3-S13 [4] HST ......................3-S14 3. TIGHTENING TORQUES ................3-S15 4.
Page 218: Troubleshooting
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION 1. TROUBLESHOOTING [1] GENERAL Reference Symptom Probable Cause Solution Page Excessive • Transmission fluid insufficient Replenish G-7, 8 Transmission Noise • Gear worn or backlash improper Replace 3-S46 to •...
Page 219: Gst System
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION [2] GST SYSTEM Electrical Diagnosis by Electronic Instrument Panel (IntelliPanel) KiSC issued 02, 2007 A 3-S2...
Page 220 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Error Display Display on LCD Reference Trouble Item Probable Cause Solution Screen Page Communication • Fuse blown out • Check fuse 9-S27 error between • Communication line • Check ECU...
Page 221 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Display on LCD Reference Trouble Item Probable Cause Solution Screen Page Solenoid 1 • Solenoid output terminal’s • Able to travel at – failure voltage is out of speeds other than...
Page 222 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Display on LCD Reference Trouble Item Probable Cause Solution Screen Page Solenoid 4 • Solenoid output terminal’s • Able to travel at – failure voltage is out of speeds other than...
Page 223 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Error Message Does not Indicate on LCD KiSC issued 02, 2007 A 3-S6...
Page 224 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION KiSC issued 02, 2007 A 3-S7...
Page 225: Hst System
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION [3] HST SYSTEM KiSC issued 02, 2007 A 3-S8...
Page 226 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION KiSC issued 02, 2007 A 3-S9...
Page 227: Pto System
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION [4] PTO SYSTEM PTO CLUTCH Reference Symptom Probable Cause Solution Page PTO Clutch Slip • Operating pressure is low Adjust 3-S17, S89 • PTO clutch valve malfunctioning Repair or replace 3-S30 •...
Page 228: Servicing Specifications
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION 2. SERVICING SPECIFICATIONS [1] GENERAL Item Factory Specification Allowable Limit Gear to Spline Clearance 0.030 to 0.078 mm 0.2 mm 0.00118 to 0.00307 in. 0.008 in. Shift Fork to Shifter Gear Groove Clearance 0.20 to 0.40 mm...
Page 229: Pto Clutch
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Item Factory Specification Allowable Limit Differential Pinion to Differential Side Gear Backlash 0.15 to 0.30 mm 0.40 mm 0.006 to 0.012 in. 0.016 in. Differential Side Gear Washer 1 Thickness 1.5 mm...
Page 230: Gst
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION [3] GST Item Factory Specification Allowable Limit GST System Pressure Setting Pressure 2.40 to 2.55 MPa – Condition 24.5 to 26.0 kgf/cm • Engine Speed : Idling 348 to 370 psi •...
Page 231: Hst
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION [4] HST Item Factory Specification Allowable Limit Check and High Pressure Relief Valve Setting Pressure 33.3 to 36.3 MPa – Condition 340 to 370 kgf/cm • Engine Speed : Maximum 4836 to 5262 psi •...
Page 232: Tightening Torques
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts : See page G-10.) Item N·m...
Page 233 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Item N·m kgf·m ft-lbs (Cabin) Compressor mounting screw 24.5 to 29.4 2.5 to 3.0 18.1 to 21.7 Cabin mounting bolt and nut 124 to 147 12.6 to 15.0 91.1 to 108...
Page 234: Checking, Disassembling And Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION 4. CHECKING, DISASSEMBLING AND SERVICING [1] MANUAL TRANSMISSION MODEL (1) Checking and Adjusting Operating Pressure of PTO Clutch Valve 1. Start the engine and warm up the transmission fluid, and then stop the engine.
Page 235: Disassembling And Assembling
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (2) Disassembling and Assembling (A) Clutch Housing Draining the Transmission Fluid 1. Place oil pans underneath the transmission case. 2. Remove the drain plugs (1). 3. Drain the transmission fluid.
Page 236 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Battery, Front Grill, Skirt and Bonnet 1. Open the bonnet (1) and disconnect the battery negative cable. 2. Disconnect the head light connector and remove the front grill (3).
Page 237 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Steering Joint, Brake Pedal Rod and Electric Wiring 1. Remove the tank frame support (1). 2. Remove the universal joint bolt (7) and steering joint support (3), and then remove the steering joint (2).
Page 238 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Shuttle Switch Connector 1. Remove the panel cover and steering post cover. 2. Disconnect the shuttle switch connector (1). (1) Shuttle Switch Connector W1014526 KiSC issued 02, 2007 A...
Page 239 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Seat and Lever Grips 1. Remove the seat (1) with seat bracket. 2. Remove the lever grip for main shift lever (3), range gear shift lever (2), front wheel drive lever (4), auxiliary control lever (7),...
Page 240 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Step and Floor Seat 1. Disconnect the ground cable which is attached on left side of transmission case. 2. Disconnect the panel frame connector (1) from fuel tank frame.
Page 241 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Propeller Shaft 1. Slide the propeller shaft cover (4) and (8) after removing the screws (7). 2. Tap out the spring pins (2), (6) and slide the couplings (1), (5) and then remove the propeller shaft with covers (4), (8).
Page 242 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Shift Levers 1. Disconnect the brake rods (6). 2. Tap out the spring pins (2) of main shift rod 1 (3). 3. Remove the shuttle shift arm stopper mounting screw, and then pull the shuttle shift shaft (1) with arm (4) up.
Page 243 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Clutch Lever, Release Fork and Release Bearing 1. Remove the release fork mounting screws (2). 2. Draw out the clutch lever (3) to remove the release fork (1). 3. Remove the release bearing and release hub (4) together.
Page 244 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION 23T (24T) Gear Shaft, 27T (26T) Gear and Front Axle Drive Shaft 1. Remove the 23T gear shaft (3). 2. Remove the external snap ring (1) and 27T gear (2).
Page 245 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Shaft Assemblies 1. Remove the external snap ring (1) and collar (2). 2. Draw out the shaft assemblies (3), (5), (6), (7), (8). (1) External Snap Ring (5) 18T Gear Shaft Assembly...
Page 246 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (B) Mid Case NOTE • For the disassembling procedure from “Draining the Transmission Fluid” to “Propeller Shaft”, refer to page 3-S18 to 3-S24. Main Shift Lever and Brake Rods 1.
Page 247 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION PTO Clutch Valve 1. Remove the PTO clutch valve (2) as a unit. 2. Pull out the pipe (1). (When reassembling) • Apply small amount of grease for the O-ring (3).
Page 248 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Shuttle Shaft 1. Remove the external snap ring (17) and collar (16). 2. Draw out the bearing (15) by the bearing puller. 3. Remove the gears, collars and etc..
Page 249 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Clutch Hub and Clutch Discs of PTO Clutch 1. Remove the internal snap ring (8), and then take out the clutch discs (5), the back plate (7), the steel plates(4) and (6), the hub (3) and the bearing (2).
Page 250 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Clutch Case 1. Remove the external snap ring (1). 2. Remove the clutch case (7) and brake disc (5). (When reassembling) • Direct the contact part of the brake disc (5) to the brake plate (6).
Page 251 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (C) Transmission Case NOTE • For the disassembling procedure from “Draining the Transmission Fluid” to “Step and Floor Seat”, refer to page 3-S18 to 3-S24. Rear Wheel 1. Place disassembling stand under the transmission case, and support it with a jack.
Page 252 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Rear Hydraulic Block and Lift Arm Support 1. Disconnect the draft control rod pin (3). 2. Remove the auxiliary valve (1), hoses and pipes. 3. Loosen the main delivery pipe support screw and disconnect the main delivery pipe (5) at the rear hydraulic block (4).
Page 253 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Separating Mid Case and Transmission Case 1. Remove the screw and pull the PTO shift rod (1). 2. Separate the mid case and transmission case after removing their mounting screws and nut.
Page 254 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Transmission Bearing Holder 1. Remove the transmission bearing holder mounting screws. 2. Tap out the spring pin (8) on the shift fork rod (3). 3. Jack up the bearing holder (1) by using the two jack screws (5) until the taper roller bearing (7) can be removed.
Page 255 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Shaft Assemblies 1. Remove the traveling speed sensor (1). 2. Take out the spiral bevel pinion shaft assembly (4), range gear shaft assembly (5) and PTO drive shaft assembly (3).
Page 256 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Differential Lock Shift Fork 1. Tap out the left side spring pin (4). 2. Remove the cotter pin and take out the clevis pin (3). 3. Draw out the differential lock fork shaft (1) and take out the differential lock shift fork (2).
Page 257 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION PTO Shaft 1. Remove the PTO shaft cover. 2. Remove the bearing case mounting screws, and draw out the PTO shaft (1) with bearing case (2). 3. Remove the internal snap ring (3).
Page 258 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Bearing and Differential Lock Shifter 1. Secure the differential gear in a vise. 2. Remove the differential lock shifter and taper roller bearing as a unit with a puller.
Page 259 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Differential Pinion Shaft and Differential Pinion 1. Draw out the differential pinion shaft 2 (5), and take out the differential pinion (3) and differential pinion washer (4). 2. Draw out the differential pinion shaft (1), and take out the differential pinion (2) and differential pinion washer.
Page 260: Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (3) Servicing (A) Bearing, Gear and Shaft Checking Bearing 1. Hold the inner race, and push and pull the outer race in all directions to check for wear and roughness.
Page 261 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (B) Synchronized Gear Clearance between Shift Fork and Shifter Groove 1. Measure the width of shift fork. 2. Measure the shifter groove width, and calculate the clearance. 3. If the clearance exceeds the allowable limit, replace them.
Page 262 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (C) PTO Clutch PTO Clutch Disc Wear 1. Measure the thickness of PTO clutch disc with vernier calipers. 2. If the thickness is less than the allowable limit, replace it.
Page 263 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Thickness of Seal Ring 1. Measure the thickness of seal rings (1) with an outside micrometer. 2. If the measurement is less than the allowable limit, replace it. 2.45 to 2.50 mm Factory spec.
Page 264 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Backlash and Tooth Contact between Spiral Bevel Gear and Spiral Bevel Pinion Shaft 1. Set the dial indicator (lever type) with its finger on the tooth surface. 2. Measure the backlash by fixing the spiral bevel pinion shaft (3) and moving the spiral bevel gear (4) by hand.
Page 265 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Clearance between Differential Case Bore (Differential Case Cover Bore) and Differential Side Gear Boss 1. Measure the bore I.D. of the differential case and differential case cover. 2. Measure the differential side gear boss O.D. and calculate the clearance.
Page 266: Glide Shift Transmission (Gst) Model
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION [2] GLIDE SHIFT TRANSMISSION (GST) MODEL (1) Checking and Adjusting (A) Electrical Adjusting [GST Fine-adjustment with Electronic Instrument Panel (IntelliPanel)] NOTE • Before executing the following fine-adjustment, refer to “Testing, Setting and Adjusting by Electronic Instrument Panel”...
Page 267 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION GST Valve Fine-adjustment (Setting the function of proportional reducing valve) NOTE • When the ECU or GST valve is replaced, this adjustment is required. 1. Push down both the display mode switch and the travel speed switch at once, continue holding switches, and then start the engine.
Page 268 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION GST Shift Shock Fine-adjustment Mode (Adjusting the clutch engaging interval) NOTE • When the sense of shifting shock is not suitable, shifting shock can be changed by this adjustment.
Page 269 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (B) Hydraulic Checking Checking GST System Pressure 1. Start the engine and warm up the transmission fluid, and then stop the engine. 2. Remove the GST system pressure checking port (1) plug (PT 1/ 8) on the GST valve (2).
Page 270 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Checking Regulating Valve Setting Pressure 1. Start the engine and warm up the transmission fluid, and then stop the engine. 2. Remove the pressure checking port (5) plug (PT 1/8).
Page 271 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Checking Clutch Pack Pressure 1. Start the engine and warm up the transmission fluid, and then stop the engine. 2. Remove the clutch pack pressure checking port plug (PT 1/8) on the GST valve (2).
Page 272: Disassembling And Assembling
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (2) Disassembling and Assembling (A) Clutch Housing Draining the Transmission Fluid 1. Place oil pans underneath the transmission case. 2. Remove the drain plugs (1). 3. Drain the transmission fluid.
Page 273 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Steering Joint, Brake Pedal Rod and Electric Wiring 1. Remove the tank frame support (2). 2. Remove the universal joint bolt (10) and steering joint support (6), and then remove the steering joint (1).
Page 274 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Air Conditioner Parts (A/C Model) 1. Remove the muffler (2). 2. Remove the air conditioner belt (4) and remove the compressor (1) mounting screw. 3. Remove the recovery tank (6) and window washer tank (7).
Page 275 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Seat, Seat Bracket and Lever Grips 1. Remove the seat. 2. Remove the seat bracket (1) with seat suspension (6). 3. Remove the lever grips for position control lever (2), front wheel drive lever (5), GST lever (4) and creep shift lever (3).
Page 276 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Cabin Assembly 1. Remove the outer roof of cabin. 2. Support the cabin with nylon straps (1) and hoists. 3. Loosen and remove the cabin mounting bolts (2) and nuts (9).
Page 277 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Propeller Shaft 1. Slide the propeller shaft cover (4) and (8) after removing the screws (7). 2. Tap out the spring pins (2), (6) and slide the couplings (1), (5) and then remove the propeller shaft with covers (4), (8).
Page 278 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Shuttle Shift Arm and GST Valve Assembly 1. Disconnect the brake rod (3). 2. Remove the shuttle shift arm stopper screw, and then pull the shuttle shift shaft (1) with arm up.
Page 279 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Shaft Case 1. Remove the shaft case mounting screws. 2. Screw down the two M6 screws (1) into the shaft case (2) and pull it out. 3. Take out the shaft case (2).
Page 280 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Clutch Housing Bearing Holder 1. Remove the three interlock balls (2) after removing the stopper screw (1). 2. Pull out the clutch housing bearing holder (4) with using two jack bolts (3).
Page 281 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Counter Shaft (1) Internal Snap Ring (2) Bearing (3) Needle Bearing (4) 24T Gear (4th) (5) External Snap Ring (6) Synchronizer Ring (7) Synchronizer Spring (8) Hub (9) Synchronizer Key...
Page 282 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (B) Mid Case NOTE • For the disassembling procedure from “Draining the Transmission Fluid” to “Propeller Shaft”, refer to page 3-S55 to 3-S60. GST Valve Assembly 1. Disconnect the brake rods (2).
Page 283 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Separating Mid Case 1. Lift up the shuttle shift arm (1). 2. Separate the mid case from the clutch housing after removing their mounting screws. (When reassembling) • Apply liquid gasket (Three Bond 1208D or equivalent) to joint face of clutch housing and mid case.
Page 284 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Mid Case Bearing Holder 1. Remove the internal snap ring (9) and remove the disc spring (8) and clutch input hub (7). 2. Remove the external snap ring (6) and remove the GST clutch case (5).
Page 285 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION GST Clutch Discs 1. Take out the clutch hub (2), clutch disc (3) and steel plate (5), (6) from clutch case (1). (When reassembling) • Assemble the three steel plates (6) with plug rubbers (4) to the front side, one steel plate (5) without plug rubber to the piston side.
Page 286 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Shuttle Shift Gears (1) External Snap Ring (2) Thrust Collar (3) Bearing (4) Thrust Collar (5) External Snap Ring (6) Thrust Collar (7) External Snap Ring (8) Hub (9) Needle Bearing...
Page 287 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (C) Transmission Case NOTE • For the disassembling procedure from “Draining the Transmission Fluid” to “Cabin Assembly”, refer to page 3-S55 to 3-S60. Rear Wheel 1. Place disassembling stand under the transmission case, and support it with a jack.
Page 288 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Rear Hydraulic Block and Lift Arm Support 1. Remove the GST delivery pipe. (Refer to 3-S59.) 2. Loosen the main delivery pipe support screw and disconnect the main delivery pipe at the rear hydraulic block (1). (Refer to 3- S59.)
Page 289 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Brake Case 1. Remove the creep gear shift lever and its fulcrum screw. (If equipped.) 2. Remove the brake case mounting screws and nuts. 3. Separate the brake case, tapping the brake case lever lightly.
Page 290 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Separating Mid Case and Transmission Case 1. Separate the mid case and transmission case after removing their mounting screws and nut. (When reassembling) • Confirm to insert the PTO shaft to PTO clutch firmly, turning the PTO shaft.
Page 291 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Transmission Bearing Holder 1. Remove the transmission bearing holder mounting screws. 2. Jack up the bearing holder (7) by using the two jack screws until the taper roller bearing (9) can be removed.
Page 292 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Disassembling Shaft Assemblies 1. Disassemble the each shaft referring to the figure. (1) 49T-19T-20T Gear (8) 44T Gear (2) Range Gear Shaft (9) Shifter for Creep Shift (3) 17T Gear...
Page 293 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION PTO Shaft 1. Remove the PTO shaft cover. 2. Remove the bearing case mounting screws, and draw out the PTO shaft (1) with bearing case (2). 3. Remove the internal snap ring (3).
Page 294 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (D) Regulating Valve Front Grille, Skirt and Battery Cable 1. Open the bonnet and disconnect the battery negative cable. 2. Disconnect the head light connector and remove the front grille (3).
Page 295 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Disassembling Regulating Valve NOTE • The regulating valve has been precisely machined and assembled. It is advisable not to disassemble it as long as there is no necessary. 1. Remove the plate (8) and take out reducing spool (11), spring retainer (5) and spring (10).
Page 296 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION GST Valve Assembly 1. Remove the GST valve cover. 2. Disconnect the pressure switch connector (1), proportional reducing valve connector (2) solenoid connector (4) and oil temperature sensor connector (5).
Page 297 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Shift Check Valve 1. Remove the lower body mounting hex. socket head cap screws (1). 2. Separate the upper body (2) and lower body (4). 3. Take out the 1-2, 3-4 shift check pin (10), (11), sub-range shift check pin (6), main range shift check pin (6), shuttle shift check pin (7), balls (5) and pin (9) from lower body (4).
Page 298 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Shift Piston 1. Separate the upper body, and lower body. (See page 3-S80.) 2. Tap out the spring pins (6), and remove the shifters (5). (For 1-2, 3-4 and sub-range shift piston) 3.
Page 299 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Low-pass Valve IMPORTANT • Do not adjust or remove the adjustor (2), otherwise the GST clutch engagement feeling will be changed. If this valve is disassembled, be sure to check and adjust the low-pass pressure.
Page 300 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Proportional Reducing Valve and Filter 1. Remove the valve mounting hex. socket head cap screws. 2. Remove the proportional reducing valve (2). 3. Remove the cover (6). 4. Take out the plug (3) and orifice support (4) with filter (5).
Page 301: Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (3) Servicing (A) Bearing, Gear and Shaft See page 3-S43. (B) Synchronizer Gear See page 3-S44. (C) PTO Clutch See page 3-S45. (D) Differential Gears See page 3-S46 to 3-S48.
Page 302 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Thickness of Seal Ring 1. Measure the thickness of seal rings (1) with an outside micrometer. 2. If the measurement is less than the allowable limit, replace it. 2.45 to 2.50 mm Factory spec.
Page 303: Hydrostatic Transmission (Hst) Model
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION [3] HYDROSTATIC TRANSMISSION (HST) MODEL (1) Checking and Adjusting (A) Electrical Adjusting [Adjustment with Electronic Instrument Panel (IntelliPanel)] NOTE • Before executing the following fine-adjustment, refer to “Testing, Setting and Adjusting by Electronic Instrument Panel”...
Page 304 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (B) Hydraulic Checking and Adjusting Checking High Pressure Relief Valve Pressure CAUTION • When checking, park the machine on flat ground, apply the parking brake. 1. Remove the hex. socket head plug from P1 or P2 port. (P2 is for forward and P1 is for reverse.)
Page 305 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Checking Charge Relief Pressure CAUTION • When checking, park the machine on flat ground, apply the parking brake. NOTE • Use a new transmission oil filter. 1. Remove the hex. socket head plug from P2 (or P1) port.
Page 306 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Operating Pressure of PTO Clutch Valve 1. Start the engine and warm up the transmission fluid, and then stop the engine. 2. Remove the plug (1) (PT 1/8) on the PTO valve spool (2).
Page 307 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Adjusting Neutral NOTE • Stop the engine when adjusting the HST neutral. 1. Set the cruise control lever to “OFF” position. (HST pedal is in Neutral position.) 2. Check to see that the length a of HST control rod (2) and the length b of neutral rod (6) are specified length.
Page 308 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Cruise Control Linkage and Maximum Travel Speed NOTE • Stop the engine when adjusting the cruise control linkage and pedal stroke. • Be sure to adjust the HST neutral position (see page 3-S90).
Page 309: Disassembling And Assembling
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Adjusting Cruise Control Release Linkage 1. Adjust the brake pedals play first. 2. Depress one of the brake pedals to make sure the cruise control is not released. Also depress both the brake pedals coupled together to make sure that the cruise control is released.
Page 310 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Battery, Front Grill, Skirt and Bonnet 1. Open the bonnet and disconnect the battery negative cable. 2. Disconnect the head light connector and remove the front grill (4). 3. Remove the left and right side skirts (3).
Page 311 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Clutch Rod, Brake Pedal Rod and Electric Wiring 1. Disconnect the brake pedal rod (5) and clutch rod (4). 2. Disconnect the wiring connectors for alternator (1), coolant temperature sensor (9), oil pressure switch (2), fuel unit (3), starter motor (6) and battery.
Page 312 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Cruise Control Release Wire 1. Disconnect the cruise control release wire (1). (When reassembling) • Be sure to adjust the cruise control release wire (1). (See page 3-S92.) (1) Cruise Control Release Wire...
Page 313 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION PTO Shift Wire and Electric Connector 1. Disconnect the PTO shift wire (2) at the PTO clutch valve lever (4). 2. Disconnect the traveling speed sensor connector (1). (When reassembling) •...
Page 314 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Hydraulic Pipes 1. Remove the main delivery pipe 1 (5). 2. Disconnect the main delivery pipe 2 (1) at the rear hydraulic block (6) and return pipe (2) at the mid case, and then remove the front hydraulic block (4) with pipes and bracket as a unit.
Page 315 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Separating Engine and Clutch Housing 1. Place the disassembling stand under the engine and clutch housing case. 2. Remove the fuel tank support mounting screws. 3. Remove the engine and clutch housing mounting screws and nuts.
Page 316 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Separating Clutch Housing and Mid Case 1. Remove the clutch housing and mid case mounting screws and nuts. 2. Separate the clutch housing and mid case. (When reassembling) • Be sure to install the gasket.
Page 317 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Shaft Case, Input Shaft, Gear and Front Axle Drive Shaft 1. Remove the shaft case mounting screws. 2. Screw down the two M6 screws into the shaft case (4) and pull it out.
Page 318 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Port Block 1. Remove the port block mounting hex. head screws. 2. Pull and remove the port block (1) from the HST housing. (When reassembling) • Install port block with O-ring (5), valve plates and gasket in place.
Page 319 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Swashplate and Pump Shaft 1. Remove the swashplate (1). 2. Remove the cradle bearing bracket mounting hex. head screws (6). 3. Tap the pump shaft (3) with a plastic hammer slightly to slide out it with cradle bearing bracket (5) to the rear side.
Page 320 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Charge Relief Valve 1. Remove the hex. head plug (1). 2. Remove the spring guide (3), shim (2), spring (4) and valve poppet (5). (When reassembling) NOTE • Install valve component, noting the number of shims (2) in the charge relief valve.
Page 321 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Servo Piston Assembly 1. Remove the servo piston under cover (1). 2. Remove the servo piston assembly mounting hex. head screw. 3. Push the piston from bottom side slightly and pull out the servo piston assembly (2).
Page 322 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (B) Mid Case NOTE • For the disassembling procedure from “Draining the Transmission Fluid” to “Step and Floor Seat” or “Cabin Assembly”, refer to page 3-S92 to 3-S96. Hydraulic Pipes 1.
Page 323 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION HST Linkages 1. Remove the cruise adjusting rod (3). 2. Disconnect the neutral rod (5) from connecting shaft (2). 3. Disconnect the damper (6) from neutral holder arm (9).
Page 324 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION PTO Clutch Valve 1. Remove the PTO clutch valve (2) as a unit. 2. Pull out the pipe (1). (When reassembling) • Apply small amount of grease for the O-ring (3).
Page 325 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION ROPS, 3 Point Linkages, Hydraulic Cylinders and Others 1. Remove the top link. 2. Remove the lift rods (2), lower links (5) and check chains (1) as a unit.
Page 326 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION HST Linkages 1. Remove the cruise adjusting rod (3). 2. Disconnect the neutral rod (5) from connecting shaft (2). 3. Disconnect the damper (6) from neutral holder arm (9).
Page 327 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Rear Axle 1. Separate the rear axle case from brake case. (When reassembling) • Apply liquid gasket (Three Bond 1208D or equivalent) to joint face of the rear axle and brake case.
Page 328 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Separating Mid Case and Transmission Case 1. Separate the mid case and transmission case after removing their mounting screws and nut. (When reassembling) • Confirm to insert the PTO shaft to PTO clutch firmly, turning the PTO shaft.
Page 329 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Transmission Bearing Holder 1. Remove the transmission bearing holder mounting screws. 2. Tap out the spring pin (8) on the shift fork rod (3). 3. Jack up the bearing holder (1) by using the two jack screws (5) until the taper roller bearing (7) can be removed.
Page 330 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Shaft Assemblies 1. Remove the traveling speed sensor (1). 2. Take out the spiral bevel pinion shaft assembly (4) with shift fork (6), range gear shaft assembly (5) and PTO drive shaft assembly (3).
Page 331 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Differential Lock Shift Fork 1. Tap out the left side spring pin (4). 2. Remove the cotter pin and take out the clevis pin (3). 3. Draw out the differential lock fork shaft (1) and take out the differential lock shift fork (2).
Page 332: Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION (3) Servicing (A) Bearing, Gear and Shaft See page 3-S43. (B) PTO Clutch See page 3-S45. (C) Differential Gears See page 3-S46 to 3-S48. (D) HST Charge Pump 1. Check the charge pump housing and the rotor (1), (2) for scratches and wear.
Page 333 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Cylinder Block Face 1. Check the polished face (1) of cylinder block for scoring. 2. If scored, replace cylinder block assembly. 3. Check the spring (2) for breakage. 4. If broken, replace cylinder block assembly.
Page 334 L3130 · L3430 · L3830 · L4630 · L5030, WSM TRANSMISSION Check and High Pressure Relief Valve 1. Check the valve plug (1) and valve (3), (4) for scratches and damage. 2. Check the valve seat in the port block for damage.
Page 335: Rear Axle
REAR AXLE KiSC issued 02, 2007 A...
Page 336 MECHANISM CONTENTS 1. STRUCTURE ....................4-M1 KiSC issued 02, 2007 A...
Page 337 L3130 · L3430 · L3830 · L4630 · L5030, WSM REAR AXLE 1. STRUCTURE [L3130, L3430, L3830, L4630] (1) Ball Bearing (4) Differential Gear Shaft (7) Differential Pinion (10) Differential Lock Shifter (2) Rear Axle (5) Brake Case (8) Ring Gear...
Page 338 L3130 · L3430 · L3830 · L4630 · L5030, WSM REAR AXLE [L5030] (1) Rear Axle Cover (5) Differential Gear Shaft (8) Differential Pinion (11) Differential Lock Shifter (2) Ball Bearing (6) Brake Case (9) Ring Gear (12) Differential Case...
Page 339 SERVICING CONTENTS 1. TROUBLESHOOTING ..................4-S1 2. TIGHTENING TORQUES ................4-S2 3. CHECKING, DISASSEMBLING AND SERVICING........4-S3 [1] DISASSEMBLING AND ASSEMBLING..........4-S3 (1) Separating Rear Axle Case from Brake Case ........4-S3 (2) Disassembling Rear Axle ..............4-S6 KiSC issued 02, 2007 A...
Page 340: Troubleshooting
L3130 · L3430 · L3830 · L4630 · L5030, WSM REAR AXLE 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Excessive or • Improper backlash between differential gear Replace 4-S6 Unusual Noise at All shaft and final gear Time • Bearing worn Replace –...
Page 341 L3130 · L3430 · L3830 · L4630 · L5030, WSM REAR AXLE 2. TIGHTENING TORQUES Tightening torques of screws and nuts on the table below are especially specified. (For general use screws and nuts : See page G-10.) Item N·m kgf·m...
Page 342: Checking, Disassembling And Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM REAR AXLE 3. CHECKING, DISASSEMBLING AND SERVICING [1] DISASSEMBLING AND ASSEMBLING (1) Separating Rear Axle Case from Brake Case Draining the Transmission Fluid 1. Place oil pans underneath the transmission case.
Page 343 L3130 · L3430 · L3830 · L4630 · L5030, WSM REAR AXLE Rear Wheel and ROPS (ROPS Model) 1. Place the disassembling stand under the transmission case. 2. Remove the rear wheel mounting screws and nuts. 3. Remove the rear wheels.
Page 344 L3130 · L3430 · L3830 · L4630 · L5030, WSM REAR AXLE Cabin Mount Bracket (Cabin Model) 1. Remove the cabin mount bracket (3), (4) or (6). (When reassembling) 166.7 to 196.1 N·m Cabin mount bracket Tightening torque 17 to 20 kgf·m...
Page 345: Disassembling Rear Axle
L3130 · L3430 · L3830 · L4630 · L5030, WSM REAR AXLE (2) Disassembling Rear Axle Rear Axle (1) Rear Axle (2) Oil Seal (3) Internal Snap Ring (4) Ball Bearing (5) Spacer (6) Rear Axle Case (7) Gear (8) Lock Nut...
Page 346 BRAKES KiSC issued 02, 2007 A...
Page 347 MECHANISM CONTENTS 1. LINKAGE......................5-M1 2. OPERATION ....................5-M2 KiSC issued 02, 2007 A...
Page 348 L3130 · L3430 · L3830 · L4630 · L5030, WSM BRAKES 1. LINKAGE (1) Brake Pedal Turnbuckle Rod (4) Brake Cam Lever (7) Brake Plate (9) Parking Brake Cable (2) Brake Pedal (5) Parking Brake Turnbuckle Rod (8) Cam Plate...
Page 349 L3130 · L3430 · L3830 · L4630 · L5030, WSM BRAKES 2. OPERATION (1) Brake Case (3) Cam Plate (5) Brake Cam Lever (7) Brake Cam (2) Brake Disc (4) Steel Ball (6) Plate (8) Brake Shaft The brakes are provided on the power transmitting shafts (brake shafts (8)) through which power is transmitted to the final reduction system.
Page 350 SERVICING CONTENTS 1. TROUBLESHOOTING ..................5-S1 2. SERVICING SPECIFICATIONS ..............5-S2 3. TIGHTENING TORQUES ................5-S3 4. CHECKING, DISASSEMBLING AND SERVICING........5-S4 [1] BRAKE PEDAL ..................5-S4 (1) Checking and Adjusting ..............5-S4 (2) Disassembling and Assembling ............5-S4 (3) Servicing .....................5-S7 [2] BRAKE CASE ..................5-S7 (1) Disassembling and Assembling ............5-S7 (2) Servicing ...................5-S11 KiSC issued 02, 2007 A...
Page 351: Troubleshooting
L3130 · L3430 · L3830 · L4630 · L5030, WSM BRAKES 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Uneven Braking • Brake pedal play unevenly adjusted Adjust 5-S4 Force • Brake disc worn Replace 5-S11 • Cam plate warped...
Page 352: Servicing Specifications
L3130 · L3430 · L3830 · L4630 · L5030, WSM BRAKES 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Brake Pedal Free Travel 15 to 20 mm – 0.6 to 0.8 in. Brake Lever Link Shaft to Bushing Clearance 0.12 to 0.25 mm 1.0 mm...
Page 353 L3130 · L3430 · L3830 · L4630 · L5030, WSM BRAKES 3. TIGHTENING TORQUES Tightening torques of screws and nuts in the table below are especially specified. (For general use screws and nuts: See page G-10.) Item N·m kgf·m ft-lbs...
Page 354: Checking, Disassembling And Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM BRAKES 4. CHECKING, DISASSEMBLING AND SERVICING [1] BRAKE PEDAL (1) Checking and Adjusting Checking Brake Pedal Free Travel CAUTION • Stop the engine and chock the wheels before checking brake pedal.
Page 355 L3130 · L3430 · L3830 · L4630 · L5030, WSM BRAKES IntelliPanel (Electronic Instrument Panel) 1. Disconnect the panel connectors (3) and combination switch connector (4). 2. Disconnect the hazard connector position light connector, main switch connector (6) and mode switch connector (7).
Page 356 L3130 · L3430 · L3830 · L4630 · L5030, WSM BRAKES Brake Pedal and Brake Rod (1) Parking Brake Lever (2) External Snap Ring (3) Oil Seal (4) Needle Bearing (5) Brake Pedal RH (6) Spring (7) Spring Pin (8) Brake Pedal LH...
Page 357: Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM BRAKES (3) Servicing Clearance between Brake Lever Link Shaft and Bushing 1. Measure the brake lever link shaft O.D. with an outside micrometer. 2. Measure the brake lever link bushing I.D. with a cylinder gauge.
Page 358 L3130 · L3430 · L3830 · L4630 · L5030, WSM BRAKES Rear Wheel and ROPS (ROPS Model) 1. Place the disassembling stand under the transmission case. 2. Remove the rear wheel mounting screws and nuts. 3. Remove the rear wheels.
Page 359 L3130 · L3430 · L3830 · L4630 · L5030, WSM BRAKES Rear Axle Case 1. Disconnect the brake rod. 2. Disconnect the parking brake rod and parking brake cable (left side only). 3. Place the disassembling stand under the rear axle case.
Page 360 L3130 · L3430 · L3830 · L4630 · L5030, WSM BRAKES Brake Case 1. Disconnect the brake rod (1). 2. Place a block of wood (5) between floor seat (4) and lift arm (6) to support the floor seat. (ROPS model) 3.
Page 361: Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM BRAKES (2) Servicing Brake Cam Lever Movement 1. Assemble the brake cam (1) and brake cam lever (2). 2. Move the brake cam lever by hand to check the movement.
Page 362: Front Axle
FRONT AXLE KiSC issued 02, 2007 A...
Page 363 MECHANISM CONTENTS 1. STRUCTURE ....................6-M1 KiSC issued 02, 2007 A...
Page 364 L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE 1. STRUCTURE (for L3130, L3430, L3830 and L4630) (1) Axle (7) Bevel Gear (13) Spiral Bevel Gear (19) Differential Yoke Shaft (2) Collar (8) Differential Side Gear (14) Spiral Bevel Pinion Shaft...
Page 365 L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE (for L5030) (1) Axle (7) Bevel Gear (13) Front Axle Bracket, Front (19) Front Axle Case (2) Collar (8) Bevel Gear Case (14) Spiral Bevel Gear (20) Differential Yoke Shaft...
Page 366 SERVICING CONTENTS 1. TROUBLESHOOTING ..................6-S1 2. SERVICING SPECIFICATIONS ..............6-S2 3. TIGHTENING TORQUES ................6-S4 4. CHECKING, DISASSEMBLING AND SERVICING........6-S5 [1] CHECKING AND ADJUSTING ...............6-S5 [2] DISASSEMBLING AND ASSEMBLING..........6-S7 (1) Separating Front Axle Assembly............6-S7 (2) Disassembling Front Axle ..............6-S8 [3] SERVICING ....................6-S15 KiSC issued 02, 2007 A...
Page 367: Troubleshooting
L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Front Wheels • Tire pressure uneven Adjust G-55 Wander to Right or • Improper toe-in adjustment (improper Adjust 6-S5 Left alignment) •...
Page 368: Servicing Specifications
L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Front Wheel Alignment Toe-in 2 to 8 mm – 0.08 to 0.32 in. Front Wheel Steering Angle 0.925 to 0.960 rad –...
Page 369 L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE (Continued) Item Factory Specification Allowable Limit (for L3130, L3430, L3830 and L4630) Backlash 0.1 to 0.3 mm – Spiral Bevel Pinion Shaft to Spiral Bevel 0.004 to 0.012 in.
Page 370 L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts : See page G-10.) Item N·m...
Page 371: Checking, Disassembling And Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING Toe-in 1. Park the tractor on the flat place. 2. Inflate the tires to the specified pressure. 3. Turn steering wheel so front wheels are in the straight ahead position.
Page 372 L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE Adjusting Front Axle Pivot 1. Jack up the tractor body, then loosen the lock nut (2). 2. Measure the adjusting screw tightening torque. 3. If tightening torque is not within the factory specifications, adjust the adjusting screw (1).
Page 373: Disassembling And Assembling
L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE [2] DISASSEMBLING AND ASSEMBLING (1) Separating Front Axle Assembly Propeller Shaft 1. Slide the propeller shaft cover (4) and (8) after removing the screws (7). 2. Tap out the spring pins (2), (6) and slide the couplings (1), (5) and then remove the propeller shaft with covers (4), (8).
Page 374: Disassembling Front Axle
L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE Front Wheel and Front Axle Assembly 1. Check the front axle and engine are securely mounted on the disassembly stand. 2. Loosen the front wheel mounting nuts. 3. Lift the front axle and remove the front wheels.
Page 375 L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE Propeller Shaft 1. Slide the propeller shaft cover (4) and (8) after removing the screws (7). 2. Tap out the spring pins (2), (6) and slide the couplings (1), (5) and then remove the propeller shaft with covers (4), (8).
Page 376 L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE Bevel Gear Case and Front Gear Case (for L5030) 1. Remove the bevel gear case mounting screws. 2. Remove the bevel gear case (3) and front gear case (4) as a unit from the front axle case (1).
Page 377 L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE Bevel Gear Case and Gears 1. Remove the axle case support (7). (L5030 only) 2. Remove the external snap ring (1). 3. Tap the bevel gear case (2) and separate it from the front gear case (3).
Page 378 L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE Power Steering Hoses 1. Disconnect the power steering hoses (1), (2) from steering cylinder. 2. Remove the cylinder cover. (When reassembling) 24.5 to 29.4 N·m Power steering hose 2.5 to 3.0 kgf·m...
Page 379 L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE Spiral Bevel Pinion Shaft and Differential Gear Assembly 1. Take out the differential yoke shaft (9), (10) both sides. 2. Remove the oil seal (6) and internal snap ring (5).
Page 380 L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE Differential Gear 1. Remove the differential case cover mounting screws (9) and then take out the differential case cover (5), ball bearing (6) and spiral bevel gear (7) as a unit.
Page 381: Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE [3] SERVICING Clearance between Differential Case (Differential Case Cover) and Differential Side Gear 1. Measure the differential side gear O.D.. 2. Measure the differential case bore I.D. and calculate the clearance.
Page 382 L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE Backlash between Differential Pinion and Differential Side Gear 1. Set a dial gauge (lever type) on a tooth of the differential pinion. 2. Fix the differential side gear and move the differential pinion to measure the backlash.
Page 383 L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE Backlash between Spiral Bevel Pinion Shaft and Spiral Bevel Gear 1. Set a dial gauge (lever type) with its finger on the spline of spiral bevel pinion shaft.
Page 384 L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE Backlash between Bevel Gear and Bevel Gear 1. Stick a strip of fuse to three spots on the bevel gear (1) with grease. 2. Fix the axle flange and front gear case.
Page 385 L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE Clearance between Front Axle Case Bosses and Bracket Bushings 1. Measure the front axle case bosses O.D. with an outside micrometer. 2. Measure the bracket bushing I.D. and calculate the clearance.
Page 386 L3130 · L3430 · L3830 · L4630 · L5030, WSM FRONT AXLE Clearance between Bevel Gear Case Boss and Front Axle Support Bushing (for L5030) 1. Measure the bevel gear case boss O.D. with an outside micrometer. 2. Measure the support bushing I.D. and calculate the clearance.
Page 387 STEERING KiSC issued 02, 2007 A...
Page 388 MECHANISM CONTENTS 1. STRUCTURE ....................7-M1 2. HYDRAULIC CIRCUIT .................. 7-M2 3. HYDRAULIC PUMP ..................7-M3 4. STEERING CONTROLLER ................7-M4 [1] CONTROL VALVE .................. 7-M5 [2] METERING DEVICE (GEROTOR) ............7-M5 [3] RELIEF VALVE (WITH CHECK VALVE) ..........7-M6 [4] OIL FLOW ....................
Page 389: Structure
L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING 1. STRUCTURE (1) Steering Wheel (3) Hydraulic Pump (5) Steering Controller (7) Steering Joint Shaft 2 (2) Steering Joint Shaft 1 (4) Steering Cylinder (6) Steering Joint Shaft 3 (8) Steering Shaft The full hydrostatic type power steering is used on these tractors.
Page 390: Hydraulic Circuit
L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING 2. HYDRAULIC CIRCUIT When the engine starts, the hydraulic pump (8) pressure-feeds the oil, drawn from the transmission case (7) through the oil filter (6), to the steering controller (3).
Page 391: Hydraulic Pump
L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING 3. HYDRAULIC PUMP The gear type hydraulic pump is adopted for these tractor. This pump is tandem type and it is composed two pair of gears, side plates, bushings and other components as shown in the figure.
Page 392: Steering Controller
L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING 4. STEERING CONTROLLER (1) Port Cover (4) Drive Plate (6) Valve Plate (8) Stator (2) Hex. Drive Assembly (5) Relief Valve (7) Drive Link (9) Upper Cover (3) Rotor The steering controller mainly consists of a control valve, a metering device and a relief valve with check valve.
Page 393: Control Valve
L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING [1] CONTROL VALVE The control valve is a rotary plate type valve. When the steering wheel is not turned, the position of the valve plate (5) and the manifolds (1), (3) is kept neutral by the centering springs (2).
Page 394: Relief Valve (With Check Valve)
L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING [3] RELIEF VALVE (WITH CHECK VALVE) If the pressure in the hydraulic circuit rises above the set pressure of the relief valve, the relief valve will actuate to prevent the pressure from rising further and protect the hydraulic system.
Page 395: Oil Flow
L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING [4] OIL FLOW Neutral Position When the steering wheel (1) is not being turned, valve plate (2) is held in the neutral position by centering spring. Under this condition, an oil passage is formed...
Page 396 L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING Left Turn The steering system operates in the same way at a left-turn as well, except that oil flows into and out of steering cylinder in the directions opposite to those at a right-turn.
Page 397: Steering Cylinder
L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING 5. STEERING CYLINDER (1) Tie-rod (3) Head Cover (5) Head Cover (7) Internal Snap Ring (2) Piston Rod (4) Cylinder Tube (6) Front Axle Case The steering cylinder is single piston both rod double-acting type. This steering cylinder is installed parallel to the front axle and connected to tie-rods.
Page 398 SERVICING CONTENTS 1. TROUBLESHOOTING ..................7-S1 2. SERVICING SPECIFICATIONS ..............7-S2 3. TIGHTENING TORQUES ................7-S3 4. CHECKING, DISASSEMBLING AND SERVICING........7-S4 [1] HYDRAULIC PUMP .................7-S4 (1) Checking .....................7-S4 (2) Disassembling and Assembling ............7-S8 (3) Servicing ...................7-S10 [2] STEERING CONTROLLER ..............7-S11 (1) Checking ...................7-S11 (2) Disassembling and Assembling ............7-S12 [3] STEERING CYLINDER................7-S13 (1) Disassembling and Assembling ............7-S13...
Page 399: Troubleshooting
L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Tractor Can Not Be • Steering controller broken Replace 7-S12 Steered • Steering linkage broken Replace 7-S15 • Pipe broken Replace –...
Page 400: Servicing Specifications
L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING 2. SERVICING SPECIFICATIONS HYDRAULIC PUMP Item Factory Specification Allowable Limit Hydraulic Pump Delivery at No Above Condition Pressure 18.6 L/min. • Engine Speed : 4.91 U.S.gals/min. – −1 Approx. 2700 min (rpm) 4.09 Imp.gals/min.
Page 401 L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts : See page G-10.) Item N·m...
Page 402: Checking, Disassembling And Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING 4. CHECKING, DISASSEMBLING AND SERVICING [1] HYDRAULIC PUMP (1) Checking (A) Pump Test Using Flow-meter [Manual and Glide Shift Transmission Models] Preparation 1. Open the bonnet (1). 2. Remove the side skirt RH (2).
Page 403 L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING Hydraulic Flow Test IMPORTANT • When using a flowmeter other than KUBOTA specified flowmeter, be sure to use the instructions with that flowmeter. • Do not close the flowmeter loading valve completely, before testing, because it has no relief valve.
Page 404 L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING (B) Pump Test Using Flow-meter [Hydrostatic Transmission Models] Preparation 1. Open the bonnet (1). 2. Remove the side skirt RH (2). 3. Remove the fuel tank frame support (3), cover (6) and steering joint shaft (7).
Page 405 L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING Hydraulic Flow Test IMPORTANT • When using a flowmeter other than KUBOTA specified flowmeter, be sure to use the instructions with that flowmeter. • Do not close the flowmeter loading valve completely, before testing, because it has no relief valve.
Page 406: Disassembling And Assembling
L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING (2) Disassembling and Assembling IMPORTANT • The hydraulic pump is precision machined and assembled : if disassemble once, it may be unable to maintain its original performance. Therefore, when the hydraulic pump fails, replacement should be carried out with the hydraulic pump assembled except when emergency repair is unavoidable.
Page 407 L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING Power Steering Delivery Pipe and Oil Cooler Return Pipe (HST Models) 1. Disconnect the power steering delivery pipe (2) and oil cooler return pipe (1). (When reassembling) • Install the copper washers firmly.
Page 408: Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING Hydraulic Pump Running-In After reassembly, perform break-in operation in the following manner, and check the pump for abnormality before use. If the pump temperature should rise noticeably during running-in, recheck should be performed.
Page 409: Steering Controller
L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING Side Plate Thickness 1. Measure the side plate thickness with an outside micrometer. 2. If the thickness is less than the allowable limit, replace it. 2.48 to 2.50 mm Factory spec.
Page 410: Disassembling And Assembling
L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING (2) Disassembling and Assembling IMPORTANT • Use only the transmission fluid (See page G-7, 8), in no case use mixture of oils of different brands. • Before disassembling the power steering system hydraulic components, check the performance of hydraulic pump and power steering using a flowmeter.
Page 411: Steering Cylinder
L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING [3] STEERING CYLINDER (1) Disassembling and Assembling Front Wheel, Cylinder Cover and Tie-rod 1. Place a disassembly stand under the engine and support it with a jack. 2. Remove the front wheel and cylinder cover (2).
Page 412: Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING (2) Servicing Steering Cylinder I.D. 1. Measure the steering cylinder I.D. with a cylinder gauge. 2. If the cylinder I.D. exceed the allowable limit, replace the cylinder tube. 55.000 to 55.074 mm Factory spec.
Page 413 L3130 · L3430 · L3830 · L4630 · L5030, WSM STEERING Side Skirt, Fuel Tank Frame Support and Cover 1. Open the bonnet (1). 2. Remove the side skirt RH (2). 3. Remove the fuel tank frame support (3) and cover (4).
Page 414: Hydraulic System
HYDRAULIC SYSTEM KiSC issued 02, 2007 A...
Page 415 MECHANISM CONTENTS 1. STRUCTURE ....................8-M1 [1] MANUAL TRANSMISSION AND GLIDE SHIFT TRANSMISSION..8-M1 [2] HYDROSTATIC TRANSMISSION ............8-M2 2. HYDRAULIC CIRCUIT .................. 8-M3 [1] MANUAL TRANSMISSION..............8-M3 [2] GLIDE SHIFT TRANSMISSION............. 8-M4 [3] HYDROSTATIC TRANSMISSION ............8-M6 3. HYDRAULIC PUMP ..................8-M8 4.
Page 416: Structure
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM 1. STRUCTURE [1] MANUAL TRANSMISSION AND GLIDE SHIFT TRANSMISSION (1) Cylinder Safety Valve (4) Lowering Speed Adjusting (7) Regulator Valve (10) Hydraulic Pump 2 (2) Check Valve Valve...
Page 417: Hydrostatic Transmission
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM [2] HYDROSTATIC TRANSMISSION (1) Oil Filter (HST) (5) Lowering Speed Adjusting (8) Hydraulic Pump 2 (11) Power Steering Controller (2) Cylinder Safety Valve Valve (9) Hydraulic Pump 1...
Page 418: Hydraulic Circuit
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM 2. HYDRAULIC CIRCUIT [1] MANUAL TRANSMISSION (1) Position Control Valve (5) Auxiliary Control Valve (8) Regulator Valve (Refer to (11) Oil Filter (2) Lowering Speed Adjusting (6) Power Steering Controller...
Page 419: Glide Shift Transmission
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM [2] GLIDE SHIFT TRANSMISSION (1) Position Control Valve (3) Hydraulic Cylinder (5) Auxiliary Control Valve (7) PTO Clutch Valve (Refer to (2) Lowering Speed Adjusting (4) Cylinder Safety Valve...
Page 420 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM (9) Regulator Valve (Refer to (11) Rear Hydraulic Block (13) Hydraulic Pump 1 (15) Front Hydraulic Block TRANSMISSION Section) (12) Oil Filter (14) Relief Valve (10) Hydraulic Pump 2...
Page 421: Hydrostatic Transmission
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM [3] HYDROSTATIC TRANSMISSION (1) Position Control Valve (3) Hydraulic Cylinder (5) Auxiliary Control Valve (7) Hydraulic Pump 2 (2) Lowering Speed Adjusting (4) Cylinder Safety Valve (6) Power Steering Controller...
Page 422 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM (9) PTO Clutch Valve (Refer to (11) Oil Cooler (13) Oil Filter (15) Relief Valve TRANSMISSION Section) (12) Rear Hydraulic Block (14) Hydraulic Pump 1 (16) Front Hydraulic Block...
Page 423: Hydraulic Pump
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM 3. HYDRAULIC PUMP The gear type hydraulic pump is adopted for these tractor. This pump is tandem type and it is composed two pair of gears, side plates, bushings and other components as shown in the figure.
Page 424: Front Hydraulic Block
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM 4. FRONT HYDRAULIC BLOCK (1) Cap A : To Implement Control Valve C : To Position Control Valve : To Transmission Case (2) Front Hydraulic Block B : From Implement Control...
Page 425: Rear Hydraulic Block
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM 5. REAR HYDRAULIC BLOCK (1) Cylinder Safety Valve (3) Position Control Valve (5) Check Valve A : From Hydraulic Pump (2) Lowering Speed Adjusting (4) Cover (Rear Hydraulic Outlet...
Page 426 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM 6. POSITION CONTROL VALVE Neutral Pressurized oil flows at the P port, pushes open unload poppet 1 (4) and returns to tank from T port. The oil in the chamber A behind the unload poppet 1 (4) returns to the tank from T port.
Page 427 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM Lifting Neutral (Acting shockless mechanism) In returning from Lifting to Neutral, the spool (1) is pushed back to the arrow-mark direction. When the Neutral position comes near, the groove part D of the spool (1) makes the pressure difference at the P port and port.
Page 428: Position Control Linkage
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM 7. POSITION CONTROL LINKAGE Position control is a mechanism to raise or lower the implement attached to the tractor in proportion to the movement of the control lever.
Page 429 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM 8. POSITION CONTROL WITH DRAFT CONTROL LINKAGE (1) Position Control Lever (5) Top Link Bracket (9) Feedback Rod (13) Return Spring (2) Draft Control Lever (6) Torsion Bar...
Page 430 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM Position Control Operation (1) Arm 1 (2) Position Control Link (3) Position Control Lever (4) Return Spring (5) Arm 2 a : Lift b : Down W1016226 Lift (a) 1.
Page 431 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM Draft Control Operation (1) Draft Control Rod (Connected to Top Link Bracket) (2) Draft Control Link 4 (3) Draft Control Link 2 (4) Draft Control Link 1 (5) Arm 1...
Page 432: Mixed Control
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM 9. MIXED CONTROL Mixed control is a system combining position control with draft control. When traction load increases, the draft control functions to raise the lift arms (implement).
Page 433: Lowering Speed Adjusting Valve
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM 10. LOWERING SPEED ADJUSTING VALVE Turning the rotor shaft (2) clockwise decreases the lowering speed, counterclockwise increases lowering speed of the three points linkage. When the rotor shaft (2) is completely closed, the three point...
Page 434: Hydraulic Cylinder
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM 11. HYDRAULIC CYLINDER The external type hydraulic cylinders are used for three point linkage system. This hydraulic cylinder is single acting type, and it is installed directly between hydraulic lift arm and lower link.
Page 435: Auxiliary Control Valve
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM 12. AUXILIARY CONTROL VALVE [1] DOUBLE ACTING TYPE 1 Neutral Pressure-fed oil from the hydraulic pump is delivered into the P port, and flows to the position control valve via N port.
Page 436: Double Acting Type 2 (Floating With Detent)
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM [2] DOUBLE ACTING TYPE 2 (FLOATING WITH DETENT) Neutral (1) Spool (2) Check Valve (3) Detent Ball (4) Detent Sleeve A : A Port (Implement Cylinder) B : B Port...
Page 437 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM Down (1) Spool (2) Check Valve A : A Port (Implement Cylinder) B : B Port (Implement Cylinder) P : Pump Port N : Neutral Port T : Tank Port...
Page 438: Single Acting Type
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM [3] SINGLE ACTING TYPE Neutral (1) Check Valve (2) Spool A : A Port (Implement Cylinder) P : Pump Port N : Neutral Port T : Tank Port Pressure-fed oil from the hydraulic pump is delivered into the P port, and flows to the position control valve via N port.
Page 439 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM Down (1) Check Valve (2) Spool A : A Port (Implement Cylinder) P : Pump Port N : Neutral Port T : Tank Port When the spool (2) is moved in the direction of the arrow, return oil from the implement cylinder flows from the A port.
Page 440 SERVICING CONTENTS 1. TROUBLESHOOTING ..................8-S1 2. SERVICING SPECIFICATIONS ..............8-S2 3. TIGHTENING TORQUES ................8-S4 4. CHECKING, DISASSEMBLING AND SERVICING........8-S5 [1] HYRAULIC PUMP..................8-S5 (1) Checking .....................8-S5 (2) Disassembling and Assembling ............8-S7 (3) Servicing .....................8-S9 [2] RELIEF VALVE ..................8-S11 (1) Checking and Adjusting ..............8-S11 (2) Disassembling and Assembling ............8-S11 [3] REAR HYDRAULIC BLOCK AND VALVES........8-S12 (1) Checking and Adjusting ..............8-S12...
Page 441 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Implement Does Not • Control linkage improperly adjusted Adjust 8-S12 Rise (Not Noise) • Control linkage improperly assembled or Repair or replace –...
Page 442: Servicing Specifications
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM 2. SERVICING SPECIFICATIONS HYDRAULIC PUMP Item Factory Specification Allowable Limit Hydraulic Pump Delivery at No Condition Pressure • Engine Speed : L3130, L3430, Above – −1 Approx. 2700 min...
Page 443 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM CYLINDER SAFETY VALVE Item Factory Specification Allowable Limit Cylinder Safety Valve Operating 19.6 to 22.6 MPa – Pressure 200 to 230 kgf/cm 2845 to 3271 psi W10115520 LIFT ARM SUPPORT AND HYDRAULIC CYLINDER Hydraulic Cylinder I.D.
Page 444 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts : See page G-10.) Item N·m...
Page 445: Checking, Disassembling And Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM 4. CHECKING, DISASSEMBLING AND SERVICING [1] HYRAULIC PUMP (1) Checking (A) Pump Test Using Flow-meter Preparation 1. Open the bonnet (1). 2. Remove the side skirt RH (2).
Page 446 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM Hydraulic Flow Test IMPORTANT • When using a flowmeter other than KUBOTA specified flowmeter, be sure to use the instructions with that flowmeter. • Do not close the flowmeter loading valve completely, before testing, because it has no relief valve.
Page 447: Disassembling And Assembling
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM Hydraulic Flow Test (Continued) [L3130, L3430, L3830] Above 31.5 L/min. Hydraulic pump delivery Factory spec. 8.32 U.S.gals/min. at no pressure 6.93 Imp.gals/min. Above 30.9 L/min. Factory spec. 8.16 U.S.gals/min.
Page 448 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM Regulator Valve (Manual and Glide Shift Transmission Models) 1. Disconnect the power steering delivery pipe (4) and return hose (3). 2. Disconnect the GST/PTO delivery pipe (5) and regulator delivery pipe (1).
Page 449: Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM (B) Disassembling Hydraulic Pump Hydraulic Pump Assembly 1. Remove the pump cover mounting screws (7). 2. Remove the drive gear (6), driven gear (2) and side plate (3) from the casing.
Page 450 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM Clearance between Bushing and Gear Shaft 1. Measure the gear shaft O.D. with an outside micrometer. 2. Measure the bushing I.D. with an inside micrometer or cylinder gauge, and calculate the clearance.
Page 451: Relief Valve
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM [2] RELIEF VALVE (1) Checking and Adjusting Relief Valve Setting Pressure Test 1. Remove the delivery pipe joint bolt from front hydraulic block. 2. Install the adaptor E. Then connect the cable and pressure gauge to adaptor E.
Page 452: Checking And Adjusting
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM [3] REAR HYDRAULIC BLOCK AND VALVES (1) Checking and Adjusting Position Control Feedback Rod Adjustment 1. Set the position control lever (1) to the lowest position. 2. Start the engine, and after warming-up, set the engine speed at the idling.
Page 453 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM Draft Control Feedback Rod Adjustment (If equipped) 1. Attach the test bar (5) to the top link bracket (3). 2. Start the engine and set the speed at maximum.
Page 454: Disassembling And Assembling
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM Checking Draft Control Sensitivity (If equipped) 1. Attach the test bar (2) to the top link bracket. 2. Start the engine, set at maximum speed. 3. Set the draft control lever (5) to the lowest position. (Refer to figure A.)
Page 455 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM Rear Hydraulic Block 1. Disconnect the position control feedback rod (5) and return hoses (4). 2. Remove the lowering speed adjusting valve joint shaft (8). 3. Disconnect the hydraulic cylinder hose RH (2) and delivery pipe (3).
Page 456 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM Cylinder Safety Valve 1. Remove the cylinder safety valve assembly (1). 2. Secure the cylinder safety valve assembly in a vise. 3. Loosen the lock nut (3), and remove the adjust screw (2).
Page 457 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM Disassembling Position Control Valve (1) Nut (2) External Snap Ring (3) Unload Plug (4) Spring (5) Unload Poppet (6) Valve Body (7) Unload Poppet 2 (8) Spring (9) Plug 2...
Page 458: Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM (3) Servicing Operating Pressure of Cylinder Safety Valve 1. Attach the cylinder safety valve to a injection nozzle tester with a safety valve setting adaptor. 2. Measure the operating pressure of the cylinder safety valve.
Page 459 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM Drawbar Frame and Hydraulic Cylinder 1. Remove the drawbar frame (3). 2. Remove the hydraulic cylinder pins. 3. Disconnect the hydraulic cylinder hoses and return hoses, then remove the hydraulic cylinders (1), (2).
Page 460 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM Top Link Holder and Lift Arm Support 1. Disconnect the position control feedback rod (3). 2. Remove the top link holder (2). 3. Remove the lift arm support (1).
Page 461: Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM (2) Servicing Hydraulic Cylinder Rod Bushing 1. Visually inspect the DX bushings for signs of wear or damage. (The DX bushing tends to show concentrated wear.) 2. If the DX bushing is worn beyond the alloy portion (A), replace it.
Page 462 L3130 · L3430 · L3830 · L4630 · L5030, WSM HYDRAULIC SYSTEM Lift Arm Bushing 1. Visually inspect the DX bushings for signs of wear or damage. (The DX bushing tends to show concentrated wear.) 2. If the DX bushing is worn beyond the alloy portion (A), replace it.
Page 463 ELECTRICAL SYSTEM KiSC issued 02, 2007 A...
Page 464 MECHANISM CONTENTS 1. WIRING DIAGRAM ..................9-M1 [1] MANUAL TRANSMISSION MODEL ............9-M1 (1) ROPS Type..................9-M1 (2) Cabin Type..................9-M2 [2] GST MODEL ................... 9-M3 [3] HST MODEL ................... 9-M4 [4] CABIN TYPE................... 9-M5 [5] COLOR OF WIRING ................9-M6 2.
Page 465: Wiring Diagram
L3130 . L3430 . L3830 . L4630 . L5030, WSM ELECTRICAL SYSTEM 1. WIRING DIAGRAM [1] MANUAL TRANSMISSION MODEL (1) ROPS Type Front Combination Parking Front Combination Electronic Instrument Panel Mode Display Switch Lamp (LH) Brake Lamp (RH) Brake Lamp Switch...
Page 466 L3130 . L3430 . L3830 . L4630 . L5030, WSM ELECTRICAL SYSTEM (2) Cabin Type Brake Lamp Switch Electronic Instrument Panel Parking Mode Display Switch Brake Traveling 14 15 12 13 Speed Switch 14 15 12 13 Trailer Socket Rear Combination Lamp (RH) Coolant Temperature 0.5 B/W...
Page 467 L3130 . L3430 . L3830 . L4630 . L5030, WSM ELECTRICAL SYSTEM [2] GST MODEL Brake Lamp Switch Electronic Instrument Panel Mode Display Trailer Socket Switch Parking Brake Proportional Reducing Output GST Solenoid Temperature Rear Rear Valve +5 V Sensor...
Page 468 L3130 . L3430 . L3830 . L4630 . L5030, WSM ELECTRICAL SYSTEM [3] HST MODEL Electronic Instrument Panel Brake Lamp Switch Mode Display Switch Parking Brake Trailer Socket 14 15 12 13 Traveling Speed 14 15 12 13 Switch HST Range Gear...
Page 469 L3130 . L3430 . L3830 . L4630 . L5030, WSM ELECTRICAL SYSTEM [4] CABIN TYPE Position Position Working Light Working Light Flasher RH Working Light Working Light Flasher LH Light LH Light RH LH (Front) LH (Rear) (Front) RH (Front)
Page 470 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM [5] COLOR OF WIRING B ... Black B/W ..Black / White Lg/Y ..Light Green / Yellow G ..Green B/Y ..Black / Yellow Or/W ..Orange / White L ...
Page 471: System Outline
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM 2. ELECTRONIC CONTROL PANEL [1] SYSTEM OUTLINE AND ELECTRICAL CIRCUIT (1) System Outline (1) Combination Switch (4) Hazard Switch (2) Liquid Crystal Display (LCD) (5) Travel Speed Switch...
Page 472: Control Items
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM (2) Control Items For HST models and manual transmission models, the electronic instrument panel (IntelliPanel) functions to receive data from sensors and switches, and displays them on the meter. For GST models, the IntelliPanel also receives data also from the GST control ECU (Electronic Control Unit) through multiplex communication, and displays them on the panel.
Page 473: Construction And Function Of Components
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM [2] CONSTRUCTION AND FUNCTION OF COMPONENTS (1) Glow Relay (10) Hazard Switch (19) Engine Tachometer Sensor (27) GST Valve (Solenoid Valve (2) Engine Oil Pressure Switch (11) Flasher Unit...
Page 474 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Electronic Instrument Panel (IntelliPanel) An 8 bit CPU is incorporated into the IntelliPanel, and outputs the status of the tractor to the LCD, monitor lamp, tachometer, and buzzer.
Page 475 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Position Switch Position switch (1) is used to lighting the position lamp. The lamp in this switch is lighted up when this switch is ON. (1) Position Switch...
Page 476 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM PTO Switch This switch (1) is mounted on the PTO shift lever (2), and sends a signal to light up the lamp at the IntelliPanel when PTO is used. It also serves as a safety switch when the engine is started.
Page 477 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Engine Oil Pressure Switch This switch (1) is turned on when the main switch is turned on and the engine oil pressure becomes lower than 49 kPa (0.5 kgf/cm , 7.1 psi), and sends a signal to...
Page 478 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Glow Relay This tractor has a system in which glow control is performed through the IntelliPanel, and controls the coil current that starts or stops the preheating circuit through the electronic meter.
Page 479 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM GST Lever Sensor : for GST Model This sensor (1) is designed to detect the position at which the GST lever changes speed, and is mounted at the bottom of the GST lever (2). It has the variable resistor of revolution angle type, the maximum resistance value is 2 kΩ, and the electrically effective...
Page 480 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM HST Pedal Neutral Switch : for HST Model This switch (1) is mounted on the HST pedal link, and is turned on when the HST pedal is in the neutral position.
Page 481 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Emergency Connector : for GST Model This is a device which compulsorily operates the shift solenoid when the tractor does not move due to the trouble of the GST system and moves the tractor.
Page 482: Control System
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM [3] CONTROL SYSTEM (1) Basic Control System (A) Normal Display The normal display is a message indicated in the liquid crystal display (LCD) while the main switch is turned ON or the engine is starting.
Page 483 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM (B) Attention Display (At Engine Starting) If neither of the levers or pedals are in neutral positions when the main switch is turned to the “START” position, the engine cannot be started. The IntelliPanel displays a message for the operator to correct the situation by placing the appropriate lever or pedal in the neutral position.
Page 484 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM HST Model The safety switch for engine starting is adapted for HST pedal, PTO shift lever and clutch pedal in this model. When the HST pedal is not set at a Neutral position Release the HST pedal to set the Neutral Position.
Page 485 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM When the HST pedal is not set at a Neutral position and the clutch pedal is not depressed Release the HST pedal to set Neutral position and depress the clutch pedal.
Page 486 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM (C) Service Interval Alert The IntelliPanel display will alert the operator when the scheduled service is required. IMPORTANT • This display, SERVICE INSPECT, informs the operator that periodic maintenance service is due.
Page 487 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Overheating Warning The IntelliPanel perceive the rise of coolant temperature, and has the function to display the overheat warning on the LCD. When the coolant temperature becomes 125 °C (257 °F) or more, “OVERHEAT”...
Page 488 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM (E) Lamp Control In this IntelliPanel, the control of various monitor lamps shown in figure are equipped in addition to warning lamps. (1) Parking Brake Lamp If the parking brake is applied, parking brake switch is turned on and monitor lamp will come on.
Page 489: Assistant Control System
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM (2) Assistant Control System (A) Fail-safe Function If a sensor or solenoid valve of the system gets in trouble during operation, an error message appears in the LCD screen of the IntelliPanel.
Page 490 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM (C) Testing, Setting and Adjusting Function It can do various settings, adjustments and testing by using the electronic instrument panel (IntelliPanel). When the main switch is turned to ON or START...
Page 491 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM (D) Glow Control The electronic meter incorporates the glow control which was external single parts so for, and controls it with CPU. When the main switch is turned ON, the temperature of the coolant is detected with the coolant temperature sensor, and the time to supply current to the glow plug and the glow indicator lamp is controlled by CPU according to the detected temperature.
Page 492: Starting System
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM 3. STARTING SYSTEM [1] MANUAL ROPS MODEL (1) Battery (7) Key Stop Solenoid Relay (13) PTO Switch (18) Fuse (7.5 A) (2) Slow Blow Fuse (60 A) (8) Fuse (5 A)
Page 493: Manual Cabin Model
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM [2] MANUAL CABIN MODEL (1) Battery (7) Key Stop Solenoid Relay (12) PTO Switch (17) Fuse (7.5 A) (2) Slow Blow Fuse (80 A) (8) Fuse (5 A)
Page 494: Gst Model
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM [3] GST MODEL (1) Battery (8) Key Stop Solenoid (14) PTO Switch (19) Electronic Instrument Panel (2) Slow Blow Fuse (80 A) (9) Fuse (5 A) (15) Shuttle Switch...
Page 495: Hst Model
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM [4] HST MODEL (1) Battery (7) Key Stop Solenoid Relay (13) HST Pedal Switch (18) Fuse (7.5 A) (2) Slow Blow Fuse (80 A) (8) Key Stop Solenoid...
Page 496: Charging System
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM 4. CHARGING SYSTEM (1) Battery (3) Main Switch (for ROPS) (6) Electronic Instrument Panel (7) ECU (GST Model Only) (2) Slow Blow Fuse (4) Main Switch (for Cabin)
Page 497: Lighting System
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM 5. LIGHTING SYSTEM [1] ROPS TYPE (1) Battery (9) Head Light Switch (16) Front Combination Lamp, LH (22) Trailer Socket (2) Main Switch (10) Turn Signal Switch (17) Rear Combination Lamp, LH (23) Lamp Relay (3) Fuse (7.5 A)
Page 498: Cabin Type
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM [2] CABIN TYPE (1) Battery (12) Turn Signal Switch (22) Patrol Lamp Switch (32) Electronic Instrument Panel (2) Main Switch (13) Flasher Unit (23) Positin Switch (IntelliPanel) (3) Fuse (7.5 A)
Page 499 SERVICING CONTENTS 1. TROUBLESHOOTING ..................9-S1 2. SERVICING SPECIFICATIONS ..............9-S8 3. TIGHTENING TORQUES ................9-S9 4. CHECKING, DISASSEMBLING AND SERVICING........9-S10 [1] BATTERY....................9-S10 (1) Checking ...................9-S10 [2] ELECTRONIC INSTRUMENT PANEL (INTELLIPANEL) ....9-S12 (1) Testing, Setting and Adjusting by Electronic Instrument Panel (IntelliPanel) ..................9-S12 (2) Checking Electrical Control System ..........9-S20 (3) Checking GST Electric Control System (GST Model Only) ....9-S27 [3] STARTING SYSTEM ................9-S33...
Page 500 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page All Electrical • Battery discharged or defective Recharge or replace G-25 Equipment Do Not • Battery positive cable disconnected or Repair or replace –...
Page 501 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM CHARGING SYSTEM Reference Symptom Probable Cause Solution Page Charging Lamp Does • Wiring harness disconnected or improperly Repair or replace – Not Light when Main connected (between main switch terminal...
Page 502 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM GAUGES Reference Symptom Probable Cause Solution Page Fuel Gauge Does Not • Fuel unit (tank unit) defective Replace 9-S56 Function • Wiring harness disconnected or improperly Repair or replace –...
Page 503 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Error Display Trouble Item Display on LCD Reference (Affected Probable Cause Solution Screen Page Model) IntelliPanel • IntelliPanel memory • Replace IntelliPanel 9-S23 memory device device failure has failed (All...
Page 504 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Trouble Item Display on LCD Reference (Affected Probable Cause Solution Screen Page Model) Input voltage to • Lever sensor input • Check ground wire 9-S27 lever sensor voltage drop below 2.6 V •...
Page 505 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Trouble Item Display on LCD Reference (Affected Probable Cause Solution Screen Page Model) Solenoid 1 • Solenoid output terminal’s • Able to travel at – failure voltage is out of...
Page 506 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Trouble Item Display on LCD Reference (Affected Probable Cause Solution Screen Page Model) Solenoid 4 • Solenoid output terminal’s • Able to travel at – failure voltage is out of...
Page 507: Servicing Specifications
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Starter Commutator O.D. 30.0 mm 29.0 mm 1.181 in. 1.142 in. Mica Under Cut 0.50 to 0.80 mm 0.20 mm 0.0197 to 0.0315 in.
Page 508 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts : See page G-10.) Item N·m...
Page 509: Checking, Disassembling And Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM 4. CHECKING, DISASSEMBLING AND SERVICING CAUTION • To avoid accidental short circuit, be sure to attach the positive cable to the positive terminal before the negative cable is attached to the negative terminal.
Page 510 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Battery Specific Gravity 1. Check the specific gravity of the electrolyte in each cell with a hydrometer. 2. When the electrolyte temperature differs from that at which the hydrometer was calibrated, correct the specific gravity reading following the formula mentioned in (Reference).
Page 511: Electronic Instrument Panel (Intellipanel)
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM [2] ELECTRONIC INSTRUMENT PANEL (INTELLIPANEL) (1) Testing, Setting and Adjusting by Electronic Instrument Panel (IntelliPanel) The following settings, adjustments and testing can be done by using the IntelliPanel.
Page 512 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Test Mode (Mode “A”) 1. Select the mode “A” (See page 9-S12 “Mode Selection”). 2. “T1” is displayed (b). 3. Each time the display mode switch is pressed, the symbol changes from “T1”...
Page 513 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Traveling Speed Coefficient Input Mode (Mode “B”) (Input the 4 digit tire code for correct travel speed to the IntelliPanel memory panel) NOTE • When the tire size is changed or IntelliPanel is replaced, this operation is required.
Page 514 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM PTO Coefficient Number Input Mode (Mode “C”) (Input the numeric code number for PTO speed into the IntelliPanel) NOTE • When the IntelliPanel is replaced, this operation is required.
Page 515 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM GST Lever Sensor Fine-adjustment (Mode “E”) (Setting the GST lever’s neutral position with its sensor) IMPORTANT • As for this fine-adjustment, be sure to set it correctly because the set state becomes the standard of the control thereafter.
Page 516 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM GST Valve FIne-adjustment Mode (Mode “F”) (Setting the function of proportional reducing valve) NOTE • When the ECU or GST valve is replaced, this adjustment is required. 1. While holding down the both switches at once, start the engine.
Page 517 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM GST Shift Shock Fine-adjustment Mode (Mode “G”) (Adjusting the clutch engaging interval) NOTE • When the sense of shifting shock is not suitable, shifting shock can be changed by this adjustment.
Page 518 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Transmission Model Input Mode (Mode “I”) (Input the transmission model into IntelliPanel) NOTE • When the IntelliPanel is replaced, this operation is required. • On the HST models, the range gear shift lever sensor must be adjusted at the same time.
Page 519: Checking Electrical Control System
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Speed Unit Selection Mode (Mode “J”) (Input the traveling speed unit to the IntelliPanel) 1. Select mode “J” (See page 9-S12 “Mode Selection”). 2. “12” is displayed (b), and existing number is flashing.
Page 520 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Checking Grounding Wire 1. Check the whether the grounding wire (1) is connected securely to the tractor chassis. 2. If the grounding wire is broken or disconnected, replace it.
Page 521 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM (B) Checking by Electronic Instrument Panel Connector (A) Connector A (20P Connector) of Wire Harness Side Color of wiring Terminal Name M/T* M/T* – – Light green / Black...
Page 522 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM (B) Connector B (16P Connector) of Wire Harness Side Color of wiring Terminal Name M/T* M/T* Power supply 12 V Black GND (for circuit line) Black / Yellow...
Page 523 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Connector Voltage Main Voltage 1. Measure the voltage between the terminal 1 (+) and terminal 11 (−). 2. If the voltage differs from the battery voltage (11 to 14 V), the wiring harness or battery is faulty.
Page 524 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Checking Fuel Unit 1. Connect the connectors to the IntelliPanel. 2. Turn on the main switch. 3. Measure the voltage between the terminal 8 (+) and terminal 3 (−) of the connector B.
Page 525 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Checking Traveling Speed Sensor 1. Connect the panel connectors to the IntelliPanel. 2. Jack up front and rear wheels or jack up rear wheels. Be sure to shift the front wheel drive lever to 2WD position 3.
Page 526: Checking Gst Electric Control System (Gst Model Only)
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM (3) Checking GST Electric Control System (GST Model Only) (A) Checking Fuse and Connector Checking Fuse 1. Check the fuse. 2. If any of the fuses is blown, replace it with the one having same capacity.
Page 527 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM (B) Checking by Electric Control Unit (ECU) Color of wiring Terminal Name Color of wiring Terminal Name Output terminal for proportional – – Green / White reducing valve Output voltage 12 V –...
Page 528 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM ECU Connector 1. Remove the seat. 2. Remove the seat bracket (1) with seat suspension (2) as a unit. 3. Disconnect the ECU connector (4). (1) Seat Bracket...
Page 529 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Pressure Switch Voltage 1. Connect the 44P connector to ECU. 2. Connect the tester positive cable to terminal 35 of wire harness side connector and negative cable to terminal 7.
Page 530 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM IntelliPanel and ECU Continuity 1. Disconnect the connector B (16P) from IntelliPanel. (See page 9-S23.) 2. Measure the resistance between terminal 4 of panel connector and terminal 21 of ECU connector, and between terminal 5 of panel connector and terminal 43.
Page 531 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Oil Temperature Sensor Resistance 1. Measure the resistance between the sensor terminals. 2. It is OK if the resistance value approximates to the value shown in the table below.
Page 532: Starting System
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Brake Lamp Switch Continuity 1. Disconnect the connector, and measure the resistance with an ohmmeter between connector terminal. 2. If the measurement differs from the table below, the brake switch is faulty.
Page 533 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Main Switch at ON Position 1. Turn the main switch ON position. 2. Measure the resistance between the terminal B and the terminal 3. If 0 Ω is not indicated, renew the main switch.
Page 534 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Main Switch at Key ON Position 1. Turn and hold the main switch at the ON position. 2. Measure the resistances between the terminal B and the terminal ACC, the terminal IG1, the terminal IG2.
Page 535 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Speed Change Switch Continuity (For Manual Transmission Model) 1. Disconnect the PTO speed change switch connector. 2. Measure the resistance between connector terminal as shown in table below.
Page 536 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM HST Pedal Switch (For HST Model) 1. Disconnect the HST neutral switch connector. 2. Remove the HST neutral switch (1). 3. Push the switch and measure the resistance between terminal 1 and 2, and between terminal 3 and 4.
Page 537 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Motor Test CAUTION • Secure the starter to prevent it from jumping up and down while testing the motor. 1. Disconnect the battery negative cable from the battery.
Page 538 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM (E) Glow Control System Glow Plug Lead Terminal Voltage 1. Disconnect the wiring lead (1) from the glow plug (2) after turning the main switch off. 2. Turn the main switch key to the “ON” position, and measure the voltage between the lead terminal and the chassis.
Page 539 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM (F) Engine Stop Solenoid Connector Voltage 1. Disconnect the 2P connector from engine stop solenoid. 2. Turn the main switch key to the “ON” position. 3. Measure the voltage between the terminal 1 (1), terminal 2 (2) and body.
Page 540: Disassembling And Assembling
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM (2) Disassembling and Assembling (A) Starter Disassembling Motor 1. Disconnect the connecting lead (9) from the magnet switch (8). 2. Remove the screws (6), and then separate the end frame (4), yoke (2) and armature (1).
Page 541 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Commutator and Mica 1. Check the contact face of the commutator for wear, and grind the commutator with emery paper if it is slightly worn. 2. Measure the commutator O.D. with an outside micrometer at several points.
Page 542 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Armature Coil 1. Check the continuity across the commutator and armature coil core with an ohmmeter. 2. If there is continuity, replace the armature. 3. Check the continuity across the segments of the commutator with an ohmmeter.
Page 543: Charging System
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM [4] CHARGING SYSTEM (1) Checking Alternator 1. Disconnect the 2P connector (3) from alternator after turning the main switch OFF. 2. Perform the following checkings. (1) B Terminal...
Page 544: Disassembling And Assembling
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM (2) Disassembling and Assembling Pulley 1. Secure the hexagonal end of the pulley shaft with a double- ended ratchet wrench as shown in the figure, loosen the pulley nut with a socket wrench and remove it.
Page 545 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Rear End Frame 1. Unscrew the two nuts and two screws holding the drive end frame and the rear end frame (1). 2. Remove the rear end frame (1).
Page 546: Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM (3) Servicing Bearing 1. Check the bearing for smooth rotation. 2. If it does not rotate smoothly, replace it. W10197900 Stator 1. Measure the resistance across each lead of the stator coil with an ohmmeter.
Page 547 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Rectifier 1. Check the continuity of each diode of rectifier with an analog ohmmeter. Conduct the test in the (R × 1) setting. 2. The rectifier is normal if the diode in the rectifier conducts in one direction and does not conduct in the reverse direction.
Page 548: Lighting System
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM [5] LIGHTING SYSTEM (1) Checking (A) Combination Switch Remove the Combination Switch 1. Remove the panel cover, and disconnect the combination switch connector (2) after turning the main switch OFF position.
Page 549 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM 3) Light Switch Continuity when Setting Switch at HIGH-BEAM Position 1. Measure the resistance between the terminal B and the terminal T, the terminal 1. 2. If 0 Ω is not indicated, the head light switch is faulty.
Page 550 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM 8) Horn Switch (If equipped) 1. Measure the resistance across the B terminal to the H terminal. 2. If 0 ohm is not indicated, the horn switch is faulty.
Page 551 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Position Switch 1. Remove the meter panel and disconnect the connector from position switch (1) after disconnect the battery negative code. 2. Remove the position switch (1). 3. Perform the following checking.
Page 552: Warning Lamps
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Flasher Unit Actuation Test 1. Set the hazard switch to the ON position, and make sure the hazard light gives 60 to 85 flashes for a minute. 2. Set the main switch to the ON position and move the turn signal switch to the left.
Page 553: Monitor Lamp
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Charging Circuit (Panel Board and Wiring Harness) 1. Disconnect the 2P connector from the alternator after turning the main switch OFF. 2. Turn the main switch ON and connect a jumper lead from the wiring harness connector terminal (WR) to the chassis.
Page 554 L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM Cruise Switch Continuity 1. Disconnect the connector (1) from the cruise switch after turning the main switch OFF. 2. Measure the resistance across the two terminals. 3. If infinity is not indicated, the switch is faulty.
Page 555: Gauges
L3130 · L3430 · L3830 · L4630 · L5030, WSM ELECTRICAL SYSTEM [8] GAUGES (1) Checking (A) Fuel Level Sensor Fuel Level Sensor 1) Sensor Continuity 1. Remove the fuel level sensor from the fuel tank. 2. Measure the resistance across the sensor terminal and its body.
Page 556 CABIN KiSC issued 02, 2007 A...
Page 557 MECHANISM CONTENTS 1. AIR CONDITIONER SYSTEM ..............10-M1 [1] OUTLINE OF AIR CONDITIONING SYSTEM ........10-M1 (1) A/C Model ..................10-M1 (2) Heater Model ................... 10-M3 [2] SYSTEM CONTROL................10-M4 (1) A/C Model ..................10-M4 (2) Heater Model ................... 10-M5 [3] ELECTRICAL SYSTEM ................
Page 558: Air Conditioner System
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN 1. AIR CONDITIONER SYSTEM [1] OUTLINE OF AIR CONDITIONING SYSTEM (1) A/C Model (1) Heater Hose (Out Side) (5) Outside Air Filter (9) Front Air Outlet (13) Air Conditioner Unit...
Page 559 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN The machine is equipped with a thin large-capacity air conditioner with outside air intake. Through the inside air filter (7) as well as the outside air filter (5), the inner roof (6) and reaches the air conditioner unit (13). The air is then cooled and defumidified by this unit.
Page 560: Heater Model
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN (2) Heater Model (1) Heater Hose (From Cabin) (2) Heater Hose (To Cabin) (3) Water Valve (4) Heater Unit W1016479 KiSC issued 02, 2007 A 10-M3...
Page 561: System Control
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN [2] SYSTEM CONTROL (1) A/C Model (1) Air Mode Lever (7) Recirculated Air (12) Air Outlet Door D3 (A) Control Plate (2) Blow Switch (8) Blower (Mode Door) (B) Air Selection Lever...
Page 562: Heater Model
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN (2) Heater Model (1) Air Mode Lever (7) Blower (11) DEFOGGER (A) Control Plate (2) Blow Switch (8) Temperature Door D2 (12) FACE (B) Air Selection Lever (3) Temperature Control Lever...
Page 563: Electrical System
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN [3] ELECTRICAL SYSTEM (1) Electrical Circuit (1) Battery (5) Joint Connector (9) Thermostat (12) A/C Blower Relay (2) Slow Blow Fuse (6) Compressor Relay (10) A/C Blower Switch (13) A/C Blower Motor...
Page 564: Air Conditioner Relay, Blower Relays And Compressor Relay
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN (2) Air Conditioner Relay, Blower Relays and Compressor Relay Remove the outer roof and the relays are visible at the ceiling center of the cabin : blower relay (1) and compressor relay (2).
Page 565: Air Conditioner Blower Switch
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN (3) Air Conditioner Blower Switch When Blower Switch is in · (Low), • (Medium) or (High) Position (1) Battery (5) Joint Connector (9) Thermostat (12) A/C Blower Relay (2) Slow Blow Fuse...
Page 566 SERVICING CONTENTS 1. TROUBLESHOOTING ..................10-S1 2. SERVICING SPECIFICATIONS ..............10-S6 3. TIGHTENING TORQUES ................10-S7 4. PRECAUTIONS AT REPAIRING REFRIGERANT CYCLE ......10-S8 [1] HANDLING OF SERVICE TOOLS............10-S9 (1) Manifold Gauge Set ................10-S9 (2) Refrigerant Charging Hose .............10-S10 (3) Vacuum Pump Adaptor..............10-S11 (4) Electric Gas Leak Tester..............10-S11 (5) Can Tap Valve ................10-S11 (6) T-joint ....................10-S12 (7) R134a Refrigerant Recovery and Recycling Machine ....10-S12...
Page 567 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN 1. TROUBLESHOOTING COMPRESSOR Reference Symptom Probable Cause Solution Page Noisy (Compressor ON) • Bearing of compressor worn or damaged Replace 10-S29 • Valves in compressor damaged Replace 10-S29 • Belt slipping...
Page 568 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN AIR CONDITIONING SYSTEM (Continued) Reference Symptom Probable Cause Solution Page Insufficient Cooling (Compressor Does • Belt slipping Adjust or replace G-29 Not Rotate Properly) • Magnetic clutch defective Repair or replace 10-S28 •...
Page 569 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN AIR CONDITIONING SYSTEM (Continued) KiSC issued 02, 2007 A 10-S3...
Page 570 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN KiSC issued 02, 2007 A 10-S4...
Page 571 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN WINDSHIELD WIPER Reference Symptom Probable Cause Solution Page Windshield Wiper • Wiring defective Check and repair – Does Not Operate • Fuse blown (Short-circuit, burnt component Correct cause and...
Page 572: Servicing Specifications
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Air-gap of A/C Compressor Magnet Clutch Air-gap 0.20 to 0.45 mm – 0.008 to 0.018 in. Refrigerating Cycle Pressure (LO 0.15 to 0.20 MPa –...
Page 573 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts : See page G-10.) Item N·m...
Page 574: Precautions At Repairing Refrigerant Cycle
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN 4. PRECAUTIONS AT REPAIRING REFRIGERANT CYCLE When checking or repairing the air conditioning system, the following precautions and rules must be observed. And it is of first importance that no other personnel than a well-trained serviceman should be allow to handle the refrigerant.
Page 575: Handling Of Service Tools
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN [1] HANDLING OF SERVICE TOOLS (1) Manifold Gauge Set The hand valves on the manifold gauge set are used to open and close the valve. The hand valve inscribed LO is for the low pressure side valve (3) and HI is for the high pressure side valve (4).
Page 576: Refrigerant Charging Hose
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN (2) Refrigerant Charging Hose The charging hoses are classified into three colors. Each charging hose must be handled as follows : • The air conditioner manufacture recommends that the blue hose...
Page 577: Vacuum Pump Adaptor
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN (3) Vacuum Pump Adaptor Objective of the Vacuum Pump Adaptor 1. After vacuum has been created in the air conditioning cycle, when the vacuum pump is stopped, since there is vacuum in hoses within the gauge manifold, the vacuum pump oil flows back into the charging hose.
Page 578: T-Joint
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN (6) T-joint T-joint (2) is used to increase efficiency of gas charging using two refrigerant containers (4) at a time. 1. Install two refrigerant container service valves to T-joint (2) sides and connect the charging hose (1) to it.
Page 579: Checking And Charging Refrigerant Cycle
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN 5. CHECKING AND CHARGING REFRIGERANT CYCLE [1] CHECKING WITH MANIFOLD GAUGE IMPORTANT • The gauge indications described in the following testing are those taken under the same condition, so it should be noted that the gauge readings will differs somewhat with the ambient conditions.
Page 580 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Insufficient Refrigerant 1. Symptoms seen in refrigerating cycle - Both LO and HI pressure side (1), (2) pressures too low. LO pressure side (1) : 0.05 to 0.1 MPa (0.5 to 1.0 kgf/cm...
Page 581 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Moisture Entered in the Cycle 1. Symptoms seen in refrigerating cycle - The air conditioner operates normally at the beginning, but over time, LO pressure side (1) pressure is vacuum and HI pressure side (2) is low pressure.
Page 582 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Expansion Valve Opens Too Far or Improper Installation of Heat Sensitizing Tube 1. Symptoms seen in refrigerating cycle - Both LO and HI pressure side (1), (2) pressures too high.
Page 583: Discharging, Evacuating And Charging
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN [2] DISCHARGING, EVACUATING AND CHARGING IMPORTANT • When discharging, evacuating or charging the refrigerating system, be sure to observe the “PRECAUTION AT REPAIRING REFRIGERANT CYCLE”. (See page 10-S8.) (1) Discharging the System Prepare for the R134a refrigerant recovery and recycling machine.
Page 584 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Evacuating the System 1. Discharge refrigerant from the system by R134a refrigerant recovery and recycling machine. (Refer to “Discharging the system”.) 2. Connect the charging hose (7) (red) to the HI pressure side charging valve and connect the charging hose (9) (blue) to the LO pressure side charging valve.
Page 585: Charging The System
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN (3) Charging the System Charging an Empty System (Liquid) This procedure is for charging an empty system through the HI pressure side with the refrigerant in the liquid state.
Page 586 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Charging an Empty or Partially Charged System (Vapor) This procedure is to charge the system through the LO pressure side with refrigerant in the vapor state. When the refrigerant container is placed right side up, refrigerant will enter the system as a vapor.
Page 587: Checking Charge Refrigerant Amount
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN (4) Checking Charge Refrigerant Amount After charging the refrigerant, check for amount of charging refrigerant as follows. NOTE • The pressure on the following checking are the gauge indications at ambient temperature 30 °C (86 °F), so it should be noted that the pressure will differ some what with the ambient temperature.
Page 588: Checking, Disassembling And Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN 6. CHECKING, DISASSEMBLING AND SERVICING [1] SEPARATING CABIN FROM TRACTOR BODY Draining Coolant CAUTION • Never remove the radiator cap until coolant temperature is well below its boiling point. Then loosen cap slightly to the stop to relieve any excess pressure before removing cap completely.
Page 589 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Steering Joint, Brake Pedal Rod and Electric Wiring 1. Remove the tank frame support (2). 2. Remove the universal joint bolt (10) and steering joint support (6), and then remove the steering joint (1).
Page 590 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Seat, Seat Bracket and Lever Grips 1. Remove the seat (1) with seat bracket. 2. Remove the front wheel drive lever (4). (Manual Transmission Model) 3. Remove the lever grip for position control lever (5), range gear shift lever (2), creep shift lever (7), main shift lever (3).
Page 591 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Electric Connector for GST 1. Disconnect the ECU connector (1). 2. Disconnect the GST lever sensor connector (2). 3. Remove the GST valve cover. 4. Disconnect the pressure switch connector (4), proportional reducing valve connector (5), solenoid valve connector (6), oil temperature sensor connector (8) and ground cables (7).
Page 592 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN PTO Shift Wire, Parking Brake Cable and Connector 1. Disconnect the parking brake cable (1). 2. Disconnect the PTO shift wire (3) at the PTO clutch valve (5). 3. Disconnect the traveling speed sensor connector (2).
Page 593 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Air Conditioner Parts (A/C Model) 1. Remove the muffler (2). 2. Remove the air conditioner belt (4) and remove the compressor (1) mounting screw. 3. Remove the recovery tank (6) and window washer tank (7).
Page 594: Compressor
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN [2] COMPRESSOR (1) Checking Operation of Magnetic Clutch 1. Start the engine. 2. Check whether abrasion or abnormal noise is heard when only the magnetic clutch pulley is running while the A/C switch is pushed OFF.
Page 595 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Compressor 1. Discharge the refrigerant from the system. (Refer to “Discharging the System” : See page 10-S17.) 2. Disconnect the low pressure pipe (suction) (2) and high pressure pipe (discharge) (1) from the compressor, then cap the open fittings immediately to keep moisture out of the system.
Page 596 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Rotor 1. Remove the cir-clip (1). 2. Remove the rotor (3). (When reassembling) • Do not use the cir-clip again. • Assemble the cir-clip for the tapered side to become outside of rotor.
Page 597: Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN (3) Servicing Adjustment of Air-gap 1. Measure the air-gap with a feeler gauge. 2. When the measurement value comes off from factory specification, adjustment shim is added or deleted.
Page 598 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN 2) Relay Test 1. Remove the relay (1). 2. Connect the battery (2) and bulb (3) with the relay (1) as shown in the left figure. 3. In this condition, the bulb should light on if the relay is proper.
Page 599 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN A/C Blower Motor Test 1. Remove the outer roof. 2. Turn the blower motor (2) by hand and check whether it turns smoothly. 3. Disconnect the connector (1) of blower motor (2).
Page 600 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN 1) Connector Voltage 1. Turn the main switch ON. 2. Measure the voltage with a voltmeter between the terminal 7 and terminal 6. 3. If the voltage differs from the battery voltage, the wiring harness, A/C relay or fuse is faulty.
Page 601 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Pressure Switch 1) HI Pressure Side 1. Connect the manifold gauge (6) to compressor as following procedure. Close the HI and LO pressure valves (5), (7) of manifold gauge tightly, and connect the charging hoses (red and blue) (1), (4) to the respective compressor service valves.
Page 602 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN 1) Connector Voltage 1. Turn the main switch ON. 2. Measure the voltage with a voltmeter between the terminal B and chassis. 3. If the voltage differs from the battery voltage, the wiring harness, fuse or main switch is faulty.
Page 603 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Front Wiper Motor 1. Raise up the front wiper arm (2). 2. Turn the main switch ON. 3. Push the front wiper switch to ON position. 4. Count the number of wiper arm rocking per minutes.
Page 604: Disassembling And Assembling
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Rear Wiper Motor 1. Raise up the rear wiper arm (2). 2. Turn the main switch ON. 3. Push the rear wiper switch to ON position. 4. Count the number of wiper arm rocking per minutes.
Page 605 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Blower Motor and Blower Resistor 1. Remove the outer roof. 2. Disconnect the battery negative cable. 3. Disconnect the A/C blower motor connector (1). 4. Disconnect the A/C blower resistor connector (2) for A/C blower resistor (3).
Page 606 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Air Mixing Door Control Cable (Blue Tape) 1. Disconnect the air mixing door control cable (3) from the damper lever (1) of air conditioner control panel side. (When reassembling) •...
Page 607 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Air Conditioning Unit 1. Remove the unit cover (1). 2. Disconnect the heater hoses (5). 3. Disconnect the cooler pipe (liquid) (6) and cooler pipe (suction side) (7). 4. Remove the screws and take off the unit.
Page 608 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN (B) Wiper Motor Front Wiper Motor 1. Remove the steering post covers and steering post under cover. 2. Remove the meter panel. 3. Remove the panel under cover. 4. Disconnect the front wiper motor 4P connector (5).
Page 609 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN (C) Removing Air Conditioner Pipes (A/C Model) Discharging Refrigerant 1. Refer to “Discharging the System”. (See page 10-S17.) W1026331 Battery, Front Grill, Skirt and Bonnet 1. Open the bonnet and disconnect the battery negative cable.
Page 610 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN High Pressure and Low Pressure Pipes 1. Remove the outer roof. 2. Disconnect the pressure switch (2) connector. 3. Disconnect the high pressure pipe 2 (3), then cap the open fitting immediately to keep moisture out of the system.
Page 611 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Blower Motor and Blower Resistor 1. Remove the outer roof. 2. Disconnect the battery negative cable. 3. Disconnect the blower motor connector (1). 4. Disconnect the blower resistor connector (3) for blower resistor (2).
Page 612 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Air Mixing Door Control Cable (Blue Tape) 1. Disconnect the air mixing door control cable (3) from the damper lever (1) of air conditioner control panel side. (When reassembling) •...
Page 613 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Air Conditioning Unit 1. Remove the unit cover (1). 2. Disconnect the heater hoses (5). 3. Remove the screws and take off the unit. 4. Remove the duct hoses.
Page 614 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Battery, Front Grill, Skirt and Bonnet 1. Open the bonnet and disconnect the battery negative cable. 2. Disconnect the head light connector and remove the front grill (4). 3. Remove the left and right side skirts (3).
Page 615: Servicing
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN (3) Servicing (A) Air Conditioner Unit Evaporator 1. Check whether while powder or dust is attached to the evaporator (1). If they are attached, wash them off with warm water and blow them off with compressed air.
Page 616: Others
L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN [5] OTHERS (1) Disassembling and Assembling (A) Cabin Windshields Preparation 1. Prepare the followings. - Cutter knife 1 piece - Scraper 1 piece - Gun for coating 1 piece...
Page 617 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Before Replacing Windshields (3) 1. Check that the glasses are not damaged and cracked. 2. Turn over the glass and clean this surface of the glass by Sika- Activator.
Page 618 L3130 · L3430 · L3830 · L4630 · L5030, WSM CABIN Front Windshield NOTE • Apply the Sika Tack-Ultrafast (or equivalent) with the jig having the specified tip shape as shown in the figure left. • Apply it with a uniform speed to minimize unevenness.
Page 619 EDITOR : KUBOTA FARM & INDUSTRIAL MACHINERY SERVICE, LTD. 64, ISHIZU-KITAMACHI, SAKAI-KU, SAKAI-CITY, OSAKA, 590-0823, JAPAN PHONE : ( 81 ) 72-241-1129 : ( 81 ) 72-245-2484 E-mail : ksos-pub@kubota.co.jp Printed in Japan 2007. 01, S, EI, EI, e Code No.9Y011-13111 KUBOTA Corporation 2003.

This manual is also suitable for:

L4630 L3830 L3430 L3130 L5030 L3400

wsm L503 Workshop Manual

General

1 Tractor Identification

2 General Precautions

3 Handling Precautions for Electrical Parts and Wiring

4 Lubricants, Fuel and Coolant

5 Tightening Torques

6 Maintenance

7 Check and Maintenance

8 Special Tools

9 Tires

Mechanism

Servicing

Servicing

Mechanism

1 Manual Transmission Model

2 Glide Shift Transmission (Gst) Model

3 Hydrostatic Transmission (Hst) Model

4 Pto System

Servicing

1 Troubleshooting

2 Servicing Specifications

3 Tightening Torques

4 Checking, Disassembling and Servicing

Servicing

1 Troubleshooting

3 Checking, Disassembling and Servicing

Servicing

1 Troubleshooting

2 Servicing Specifications

4 Checking, Disassembling and Servicing

Servicing

1 Troubleshooting

2 Servicing Specifications

4 Checking, Disassembling and Servicing

Mechanism

1 Structure

2 Hydraulic Circuit

3 Hydraulic Pump

4 Steering Controller

5 Steering Cylinder

Servicing

1 Troubleshooting

2 Servicing Specifications

4 Checking, Disassembling and Servicing

Mechanism

1 Structure

2 Hydraulic Circuit

3 Hydraulic Pump

4 Front Hydraulic Block

5 Rear Hydraulic Block

6 Position Control Valve

7 Position Control Linkage

9 Mixed Control

10 Lowering Speed Adjusting Valve

11 Hydraulic Cylinder

12 Auxiliary Control Valve

Servicing

2 Servicing Specifications

4 Checking, Disassembling and Servicing

Mechanism

1 Wiring Diagram

3 Starting System

4 Charging System

5 Lighting System

Servicing

2 Servicing Specifications

4 Checking, Disassembling and Servicing

Mechanism

Servicing

2 Servicing Specifications

4 Precautions at Repairing Refrigerant Cycle

5 Checking and Charging Refrigerant Cycle

6 Checking, Disassembling and Servicing

Quick Links

Chapters

Troubleshooting

Related Manuals for wsm L503

Summary of Contents for wsm L503