Page 1 WORKSHOP MANUAL F2880,F3680,RCK72-F36, RCK72R-F36,RCK60-F36, RCK60R-F36 KiSC issued 04, 2006 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 F2880, F3680, KUBOTA Mower RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36. It is divided into three parts, “General”, “Mechanism” and “Servicing” for each section.
Page 3: Safety First
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, 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. It is essential that you read the instructions and safety regulations before you attempt to repair or use this unit.
Page 4 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, 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 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, 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
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, 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 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM SAFETY INSTRUCTIONS KiSC issued 04, 2006 A...
Page 8 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM SAFETY INSTRUCTIONS KiSC issued 04, 2006 A...
Page 9: Specifications
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM SPECIFICATIONS SPECIFICATIONS Model F2880 F3680 Model D1105-E2-FM2-EU V1505-E2-FM3-EU Engine gross power (SAE) *1 20.4 kW (27.3 HP) 26.3 kW (35.3 HP) Type Indirect Injection, vertical, water-cooled, 4-cycle diesel Number of cylinders 78.0 × 78.4 mm (3.07 × 3.09 in.) Bore and stroke Total displacement 1123 cm...
Page 10 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM SPECIFICATIONS Model F2880 F3680 Revolution 1 speed (2545 rpm at 3000 engine rpm) Drive system Shaft drive. KUBOTA 10-tooth involute spline (2545 rpm) Clutch type Wet multi plates PTO brake Wet single plate Steering Hydraulic power steering Transmission...
Page 11 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM DIMENSIONS DIMENSIONS KiSC issued 04, 2006 A...
Page 12 GENERAL KiSC issued 04, 2006 A...
Page 13: Table Of Contents
GENERAL CONTENTS 1. 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. LUBRICANTS, FUEL AND COOLANT ............G-7 5.
Page 14: Identification
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL 1. IDENTIFICATION When contacting your local KUBOTA distributor, always specify engine model name, engine serial number and machine serial number. Engine Serial Number The engine serial number is an identified number for the engine.
Page 15: General Precautions
Screws, bolts and nuts should be installed in their original position to prevent reassembly errors. • When special tools are required, use KUBOTA genuine special tools. Special tools which are not frequently used should be made according to the drawings provided.
Page 16: Handling Precautions For Electrical Parts And Wiring
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, 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. IMPORTANT •...
Page 17 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL • Securely clamp, being careful not to damage wiring. (1) Clamp (3) Clamp • Wind Clamp Spirally (2) Wire Harness W10114580 • Clamp wiring so that there is no twist, unnecessary sag, or excessive tension, except for movable part, where sag may be required.
Page 18: Battery
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, 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 19: Handling Of Circuit Tester
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL • Use sandpaper to remove rust from terminals. • Repair damaged terminals. Make certain there is no terminal being exposed or displaced. (1) Exposed Terminal (3) Sandpaper (2) Deformed Terminal (4) Rust W10123460 •...
Page 20: Lubricants, Fuel And Coolant
SAE85W, SAE90 gear oil (API Service Classification : more 0.5 L than GL-3) Rear axle gear case 0.53 U.S.qts 0.44 Imp.qts * KUBOTA original transmission hydraulic fluid. No. of greasing points Greasing Capacity Type of grease F2880 F3680...
Page 21: Tightening Torques
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL 5. TIGHTENING TORQUES [1] GENERAL USE SCREWS, BOLTS AND NUTS Screws, bolts and nuts whose tightening torques are not specified in this Workshop Manual should be tightened according to the table below. Indication on top of No-grade or 4T bolt...
Page 22: American Standard Screws, Bolts And Nuts With Unc Or Unf Threads
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL [3] AMERICAN STANDARD SCREWS, BOLTS AND NUTS WITH UNC OR UNF THREADS SAE GR.5 SAE GR.8 Grade Unit N·m kgf·m ft-lbs N·m kgf·m ft-lbs Nominal Diameter 5/16 23.1 to 27.8 2.35 to 2.84 17.0 to 20.5 32.5 to 39.3 3.31 to 4.01...
Page 23: Maintenance Check List
Suggested cleaning interval is every 100 hours in normal conditions. • The items listed above (@ marked) are registered as emission related critical parts by KUBOTA in the U.S.EPA nonroad emission regulation. As the engine owner, you are responsible for the performance of the required maintenance on the engine according to the above instruction.
Page 24 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL (Continued) Period Service Interval Refer- After Impor- ence since tant 100 150 200 250 300 350 400 450 500 550 600 page Item every Check G-28 200Hr Fuel line every 2 Replace G-33 years...
Page 25: Check And Maintenance
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL 7. CHECK AND MAINTENANCE CAUTION • Be sure to check and service the machine on a flat area with engine shut off, the parking brake set and chock the weel. [1] DAILY CHECK To prevent trouble from occurring, it is important to know the condition of the machine.
Page 26 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL Checking Engine Oil Level CAUTION • Always stop the engine and remove the key before checking oil. 1. Check engine oil before starting and 5 minutes or more after the engine has stopped. 2.
Page 27 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL Checking Amount of Fuel and Refueling CAUTION • Handle fuel carefully. If the engine is running, do not fill the fuel tank. If engine is hot, let engine cool for several minutes before adding fuel.
Page 28 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL Checking and Cleaning Radiator to Prevent Overheating CAUTION • Be sure to stop the engine and remove the key before cleaning. IMPORTANT • The air intake area must be clear of debris to prevent the engine from overheating.
Page 29 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL Checking Transmission Fluid Level 1. Park the machine on a flat surface, lower the implement to the ground and shut off engine and remove the key. 2. To check the oil level, draw out the dipstick (2), wipe it clean, reinsert it, and draw it out again.
Page 30: Check Points Of Initial 50 Hours
6. Then, replenish the engine oil up to the prescribed level. IMPORTANT • To prevent serious damage to the engine. Use only a genuine KUBOTA filter. (1) Engine Oil Filter Cartridge W1030949 KiSC issued 04, 2006 A G-17...
Page 31 5. Check for oil leaks around the filter gasket. IMPORTANT • To prevent serious damage to the hydraulic system, replacement oil filter cartridge must be highly efficient. Use only a genuine KUBOTA filter. (1) Transmission Oil Filter Cartridge W1031068 KiSC issued 04, 2006 A...
Page 32: Check Points Of Every 50 Hours
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL [3] CHECK POINTS OF EVERY 50 HOURS Checking Safety Devices The Safety Devices are on your machine help to protect you while operating. Please check these Safety Devices periodically - daily is best - to test the safety systems function correctly before operation.
Page 33 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL Lubricating All Grease Nipple 1. Apply grease to the following locations as shown in the figures. CAUTION • Be sure to stop the engine and remove the key before greasing. (1) Speed Control Pedal Shaft (3) Differential Lock Pedal Boss (2) Link Pivot (LH and RH) (4) Universal Joint...
Page 34 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL Lubricating All Grease Nipple (Continued) 1. Apply grease to the following locations as shown in the figures. CAUTION • Be sure to stop the engine and remove the key before greasing. (1) Rear Wheel Drive Shaft (3) Knuckle Arm (RH) (2) Knuckle Arm (LH)
Page 35 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL Checking Battery Condition DANGER 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 36 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL Battery Charging DANGER • When the battery is being activated, hydrogen and oxygen gases in the battery are extremely explosive. Keep sparks and flames away from the battery at all times, especially when charging the battery.
Page 37 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL Cleaning Air Cleaner Element 1. Remove the air cleaner cover (1) and element (3). 2. Clean the element : • When by dust adheres to the element, blow compressed air from the inside turning the element.
Page 38: Check Points Of Every 100 Hours
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL [4] CHECK POINTS OF EVERY 100 HOURS Changing Engine Oil 1. See page G-13. W1043451 Fan Belt Tension 1. Measure the deflection (A), depressing the belt halfway between the fan drive pulley and alternator pulley at specified force 98 N (10 kgf, 22 lbs).
Page 39: Check Points Of Every 200 Hours
IMPORTANT • Use only KUBOTA SUPER UDT fluid. Use of other oils may damage the transmission or hydraulic system. • Refer to “LUBRICANTS, FUEL AND COOLANT”. (See page G-7.)
Page 40 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL Changing Rear Axle Differential Case Oil 1. Place the machine on level ground. 2. Place an oil pan underneath the rear axle differential case. 3. Remove the drain plug (2) and oil filler plug (1), and drain the used oil completely.
Page 41 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL Checking Hydraulic Hose 1. Check to see that all hydraulic hoses (1), (2) and hose clamps are tight and not damaged. 2. If hoses and clamps are worn or damaged, replace or repair at once.
Page 42: Check Points Of Every 400 Hours
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL Checking Intake Air Line 1. Check to see that hoses (2) and hose clamps (1) are tight and not damaged. 2. If hoses (2) and hose clamps (1) are found worn or damaged, replace or repair them at once.
Page 43: Check Points Of Every 1500 Hours
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL [7] CHECK POINTS OF EVERY 1500 HOURS Checking Fuel Injection Nozzle 1. See page 1-S17 (“ENGINE” Section). W1047797 [8] CHECK POINTS OF EVERY 3000 HOURS Checking Injection Pump 1. See page 1-S16 (“ENGINE” Section). [9] CHECK POINTS OF EVERY 1 YEAR Replacing Air Cleaner Element 1.
Page 44 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL Flush Cooling System and Changing Coolant CAUTION • Do not remove the radiator cap when the engine is hot. When engine is cool, loosen cap slightly to the stop to relieve excess pressure before...
Page 45 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL Flush Cooling System and Changing Coolant (Continued) Anti-Freeze It is not recommended to use plain water as coolant. water freazes at 0 °C (32 °F) ambient temperature. If coolant freezes in the engine, it will damage the engine block, head and radiator.
Page 46: Check Points Of Every 2 Years
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL [10] CHECK POINTS OF EVERY 2 YEARS Replacing Radiator Hose and Hose Clamp 1. Replace the radiator hoses (1) and hose clamp (2). Refer to “Checking Radiator Hose and Hose Clamp” (See page G-27.).
Page 47: Others
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL [11] OTHERS Bleeding Fuel System CAUTION • Do not bleed the fuel system when the engine is hot. Air must removed : 1. When the fuel filter or lines are removed. 2.
Page 48: Special Tools
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, 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. W1024050 Piston Ring Compressor Code No: 07909-32111 Application: Use exclusively for pushing in the piston with piston...
Page 49 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL Diesel Engine Compression Tester (for Glow Plug) Code No: 07909-39081 (Assembly) 07909-31301 (L) 07909-31291 (K) 07909-31311 (M) Application: Use to measure diesel engine compression and diagnostics of need for major overhaul. (1) Gauge (4) Adaptor L (2) L Joint...
Page 50 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL Nozzle Tester Code No: 07909-31361 Application: Use to check the fuel injection pressure and spray pattern of nozzle. Measuring: 0 to 50 MPa range (0 to 500 kgf/cm , 0 to 7000 psi) W1024653 Plastigage Code No:...
Page 51 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL NOTE • The following special tools are not provided, so make them referring to the figure. Injection Pump Pressure Tester Application: Use to check fuel tightness of injection pumps. Pressure gauge full scale : More than 29.4 MPa (300 kgf/cm , 4267 psi) PF 1/2...
Page 52 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL Bushing Replacing Tool Application: Use to press out and press fit the bushing. 1. For small end bushing 157 mm (6.1811 in.) 24 mm (0.9449 in.) 120 mm (4.7244 in.) 21.8 to 21.9 mm dia. (0.8583 to 0.8622 in. dia.) 24.8 to 24.9 mm dia.
Page 53 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL Crankshaft Bearing 1 Replacing Tool Application: Use to press out and press fit the crankshaft bearing 1. [Press Out] 135 mm (5.31 in.) 72 mm (2.83 in.) 40 mm radius (1.57 in. radius) 10 mm (0.39 in.) 24 mm (0.95 in.) 20 mm dia.
Page 54 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL Crank Sleeve Setter Application: Use to fix the crankshaft sleeve. (1) Auxiliary Socket for Pushing 130 mm (5.12 in.) 112 mm (4.41 in.) 107 mm (4.21 in.) 82 mm (3.23 in.) 72 mm (2.83 in.) 67 mm (2.64 in.) 47 mm (1.85 in.)
Page 55: Special Tools For Machine
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL [2] SPECIAL TOOLS FOR MACHINE Relief Valve Pressure Tester Code No: 07916-50045 Application: This allows easy measurement of relief set pressure. (1) Gauge (07916-50322) (6) Adaptor C (PS3/8) (07916-50371) (2) Cable (07916-50331) (7) Adaptor D (PT1/8) (07916-50381) (3) Threaded Joint (07916-50401) (8) Adaptor E (PS3/8) (07916-50392)
Page 56: Tires
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM G GENERAL 9. TIRES [1] TIRE PRESSURE CAUTION • Do not attempt to mount a tire on a rim. This should be done by a qualified person with the proper equipment. • Always maintain the correct tire pressure. Do not inflate tires above the recommended pressure as shown below.
Page 57: Implement Limitations
KUBOTA. Use of implements which are not sold or approved by KUBOTA and which exceed the maximum specifications listed below, or which are otherwise unfit for use with the KUBOTA Machine may result in malfunctions or failures of the machine, damage to other property and injury to the operator or others. [Any malfunctions or failures of the machine resulting from use with improper implements are not covered by the warranty.]...
Page 58 ENGINE KiSC issued 04, 2006 A...
Page 59 MECHANISM CONTENTS 1. ENGINE BODY ..................... 1-M1 2. LUBRICATING SYSTEM ................1-M2 3. COOLING SYSTEM ..................1-M3 4. FUEL SYSTEM ..................... 1-M4 [1] GOVERNOR .................... 1-M5 KiSC issued 04, 2006 A...
Page 60: Engine Body
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE 1. ENGINE BODY Closed Breather Closed breather system has been adopted to prevent the release of blow-by gas into the atmosphere. After its oil content is filtered by oil shield (4), the blow- by gas is fed back to the intake manifold through breather valve (3) to be used for re-combustion.
Page 61: Lubricating System
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE 2. 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 (10) Relief Valve (11) Push Rod (12) Tappet (13) Camshaft...
Page 62: Cooling System
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE 3. COOLING SYSTEM (1) Radiator (2) Water Pump (3) Fan (4) Thermostat (5) Cylinder Head (6) Cylinder Head The Cooling system consists of a radiator (1), centrifugal water pump (2), suction fan (3) and thermostat (4). The coolant is cooled through the radiator core, and the fan set behind the radiator pulls cooling air through the core to improve cooling.
Page 63: Fuel System
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE 4. FUEL SYSTEM (1) Fuel Overflow Pipe (2) Fuel Filter (3) Fuel Pump (4) Injection Nozzle (5) Fuel Tank (6) Fuel Filter (7) Injection Pump Fuel from the fuel tank (5) passes through the fuel filter (2), and then enters the injection pump (7) after impurities such as dirt, water, etc.
Page 64: Governor
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE [1] GOVERNOR Three Lever Type Fork Lever The governor system is a mechanical governor that uses a governor weight (5). The governor weight (5) is mounted on the governor shaft that rotates at the same speed as the crankshaft. Because the feature of this mechanism takes out the engine speed directly as a centrifugal force of weight, the speed control that the change in the engine rotational...
Page 65 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE (Overloaded Operation) The amount of the movement of the fork lever assembly is limited with the fuel limitation bolt (2) and can not be moved in the direction of the fuel increase. As overload reduces the centrifugal force of the governor weight, which is pressing the torque pin (5) into the floating lever (6), the floating lever pushes the fork...
Page 66 SERVICING CONTENTS 1. TROUBLESHOOTING ..................1-S1 2. SERVICING SPECIFICATIONS ..............1-S4 3. TIGHTENING TORQUES ................1-S10 4. CHECKING, DISASSEMBLING AND SERVICING........1-S11 [1] CHECKING AND ADJUSTING .............1-S11 (1) Engine Body..................1-S11 (2) Lubricating System ................1-S13 (3) Cooling System.................1-S13 (4) Fuel System ..................1-S15 [2] PREPARATION ..................1-S19 (1) Separating Engine ................1-S19 [3] DISASSEMBLING AND ASSEMBLING..........1-S24 (1) External Components ...............1-S24...
Page 67: Troubleshooting
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE 1. TROUBLESHOOTING Reference Symptom Probable Solution page Engine Does Not No fuel Replenish fuel Start Air in the fuel system Bleed G-34 Water in the fuel system Change fuel and – repair or replace fuel system Fuel pipe clogged Clean...
Page 68 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE (Continued) Reference Symptom Probable Solution page Either White or Blue Excessive engine oil Reduce to specified G-7, 17 Exhaust Gas Is level Observed Piston ring and cylinder worn or stuck Repair or replace 1-S34 Incorrect injection timing Adjust...
Page 69 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE (Continued) Reference Symptom Probable Solution page Low Oil Pressure Engine oil insufficient Replenish G-7, 17 Oil strainer clogged Clean – Relief valve stuck with dirt Clean – Relief valve spring weaken or broken Replace –...
Page 70: Servicing Specifications
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE 2. SERVICING SPECIFICATIONS ENGINE BODY Item Factory Specification Allowable Limit Compression Pressure 3.72 to 4.12 MPa 2.25 MPa 38 to 42 kgf/cm 23.0 kgf/cm 539 to 596 psi 327 psi Difference among Cylinders –...
Page 71 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE ENGINE BODY (Continued) Item Factory Specification Allowable Limit Rocker Arm Shaft to Rocker Arm Clearance 0.016 to 0.045 mm 0.10 mm 0.00063 to 0.00177 in. 0.0039 in. Rocker Arm Shaft O.D. 11.973 to 11.984 mm –...
Page 72 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE ENGINE BODY (Continued) Item Factory Specification Allowable Limit Idle Gear Idle Gear 1 Side Clearance 0.20 to 0.51 mm 0.80 mm 0.0079 to 0.0201 in. 0.0315 in. Camshaft Side Clearance 0.07 to 0.22 mm 0.30 mm 0.0028 to 0.0087 in.
Page 73 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE ENGINE BODY (Continued) Item Factory Specification Allowable Limit Connecting Rod Alignment – 0.05 mm 0.0020 in. Piston Ring Gap Top Ring 0.30 to 0.45 mm 1.25 mm 0.0118 to 0.0177 in. 0.0492 in. Second Ring 0.30 to 0.45 mm 1.25 mm...
Page 74 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE ENGINE BODY (Continued) Item Factory Specification Allowable Limit Cylinder Liner I.D. 78.000 to 78.019 mm 78.15 mm 3.0709 to 3.0716 in. 3.0768 in. Cylinder (Oversized) 78.500 to 78.519 mm 78.65 mm 3.0906 to 3.0913 in. 3.0965 in.
Page 75 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE FUEL SYSTEM Item Factory Specification Allowable Limit Injection Pump Injection Timing 0.30 to 0.33 rad – (3000 min (rpm)) (17 to 19°) before T.D.C. Pump Element Fuel Tightness – 13.73 MPa 140 kgf/cm 1991 psi Delivery Valve Fuel Tightness...
Page 76: Tightening Torques
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, 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-8.) Item N·m kgf·m ft-lbs Oil strainer 98.1 to 137.2 10.0 to 14.0...
Page 77: Checking, Disassembling And Servicing
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING (1) Engine Body Compression Pressure 1. Run the engine until it is warmed up. 2. Stop the engine. 3. Remove the air cleaner, the muffler and all glow plugs (or nozzles).
Page 78 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Valve Clearance IMPORTANT • Valve clearance must be checked and adjusted when engine is cold. 1. Remove the cylinder head cover and the glow plugs. 2. Align the “1TC” mark (1) on the flywheel with alignment mark (2) on the rear end plate so that the No.
Page 79: Lubricating System
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE (2) Lubricating System Engine Oil Pressure 1. Remove the engine oil pressure switch, and install an oil pressure tester. 2. Start the engine. After warming up, measure the oil pressure at both idle and rated speeds. 3.
Page 80 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Fan Belt Damage and Wear 1. Check the fan belt for damage. 2. If the fan belt is damaged, replace it. 3. Check if the fan belt is worn and sunk in the pulley groove. 4.
Page 81: Fuel System
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, 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 82 5. Set the speed control lever to the maximum speed position. 6. Run the starter to increase the pressure. 7. If the pressure can not reach the allowable limit, replace the pump with new one or repair with a Kubota-authorized pump service shop. 13.73 MPa...
Page 83 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE CAUTION • Check the nozzle injection pressure and condition after confirming that there is nobody standing in the direction of the fuel spray. If the spray from the nozzle directly contacts the human body, cells may be destroyed and blood poisoning may be caused.
Page 84 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Nozzle Holder 1. Secure the nozzle retaining nut (7) with a vise. 2. Remove the nozzle holder (1), and take out parts inside. (When reassembling) • Assemble the nozzle in clean fuel. •...
Page 85: Preparation
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE [2] PREPARATION (1) Separating Engine Draining Coolant CAUTION • Never open the radiator cap while operating or immediately after stopping the engine. Otherwise, hot water will spout out from the radiator. Wait for more than ten minutes to cool the radiator, before opening the cap.
Page 86 Capacity 14.8 U.S.qts 12.3 Imp.qts IMPORTANT • Use only KUBOTA SUPER UDT fluid. Use of other oils may damage the transmission or hydraulic system. • Refer to “LUBRICANTS, FUEL AND COOLANT” (See page G-7.). • Do not mix different brands fluid together.
Page 87 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Bonnet 1. Unscrew the bonnet mounting screws (2) and nuts. 2. Remove the bonnet (1) from the frame (3). (1) Bonnet (2) Frame (2) Bonnet Mounting Screw W1042247 Air Cleaner 1. Remove the air cleaner (1) with hoses from the intake manifold. (1) Air Cleaner W1043401 Wiring, Accelerator Wire and Hose...
Page 88 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Seat 1. Disconnect 2P connector from the seat switch. 2. Remove the seat (1) with the seat base. 17.7 to 20.5 N·m Tightening torque Seat base mounting screw 1.8 to 2.1 kgf·m 13.1 to 15.1 ft-lbs (1) Seat (2) Seat Base Mounting Screw...
Page 89 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Fuel Tank 1. Disconnect the fuel hose and return hose from the fuel tank (1). 2. Disconnect the 1P connector from the fuel sensor. 3. Remove the fuel tank (1). 4. Remove the dust under plate (2). 5.
Page 90: Disassembling And Assembling
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Separating Engine 1. Unscrew the engine mounting nuts, and support the engine with an engine lift hook and hoist. 2. Separate the engine from the frame. W1059769 [3] DISASSEMBLING AND ASSEMBLING (1) External Components External Components 1.
Page 91 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Injection Pipes 1. Loosen the screws to the pipe clamp (1). 2. Detach the injection pipes (2). (When reassembling) • By using compressed air, clean out the injector pipes (2). Then, reassemble the pipes in the reverse order. 24.5 to 34.3 N·m Tightening torque Injection pipe retaining nut...
Page 92 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Rocker Arm and Push Rod 1. Remove the rocker arm bracket nut. 2. Detach the rocker arm assembly (1). 3. Remove the push rods (2). (When reassembling) • When refitting the push rods (2) into the tappets (3), make sure the push rod locates correctly into the tappet seat.
Page 93 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Cylinder Head and Cylinder Head Gasket 1. Loosen the pipe clamps (1), and remove the water return hose (2). 2. Remove the cylinder head screw in the order of (n or r) to (a) and remove the cylinder head.
Page 94: Oil Pan, Timing Gears, Camshaft And Fuel Camshaft
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Valves 1. Remove the valve caps (2). 2. Remove the valve spring collet (3) by pushing the valve spring retainer (4) with valve spring replacer (1). 3. Remove the valve spring retainer (4), valve spring (5) and valve stem seal (6).
Page 95 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Gear Case 1. Remove the gear case. (When reassembling) • Apply a thin coat of grease to the oil seal, and install it, ensuring the lip does not get cut or rolled. •...
Page 96 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Injection Pump 1. Disconnect the start spring (4) on the thrust lever side (5). 2. Align the control rack pin (2) with the notch (1) on the crankcase, and remove the injection pump (3). 3.
Page 97 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Cam Gear, Idle Gear 1 and Governor Gear 1. Remove the idle gear 1 (4). 2. Remove the fuel camshaft stopper (6). 3. Draw out the fuel cam gear (1) with fuel camshaft (7). 4.
Page 98: Piston And Connecting Rod
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Oil Pan and Oil Strainer 1. Remove the oil pan mounting screws. 2. Remove the oil pan (4) by lightly tapping the rim of the pan with a wooden hammer. 3. Remove the oil strainer (3). (When reassembling) •...
Page 99 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Pistons 1. Turn the flywheel and bring the piston to top dead center. 2. Draw out the piston upward by lightly tapping it from the bottom of the crankcase with the handle of a hammer. 3.
Page 100 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Piston Ring and Connecting Rod 1. Remove the piston rings using a piston ring tool. 2. Remove the piston pin (7), and separate the connecting rod (6) from the piston (5). (When reassembling) •...
Page 101: Crankshaft
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE (5) Crankshaft Flywheel 1. Secure the flywheel to keep it from turning, using a flywheel stopper. 2. Remove all flywheel screws (1) and then remove the flywheel (2). (When reassembling) • With No. 1 piston at TDC, align the “1TC” mark (a) on the outer surface of the flywheel horizontally with the alignment mark (b) on the rear end plate.
Page 102 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Crankshaft Assembly 1. Remove the main bearing case screw 2 (1). 2. Pull out the crankshaft assembly. IMPORTANT • Take care to protect crankshaft bearing 1 from scratches, caused by the crank gear, etc.. (Wrap the gear in vinyl tape, etc.) (When reassembling) •...
Page 103: Servicing
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE [4] SERVICING (1) Cylinder Head and Valves Top Clearance 1. Remove the cylinder head. (Do not attempt to remove the cylinder head gasket.) 2. Move the piston up and stick a strip of fuse [1.5 mm dia. (0.059 in.
Page 104 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Cylinder Head Flaw 1. Prepare an air spray red check. 2. Clean the surface of the cylinder head with detergent (2). 3. Spray the cylinder head surface with the red permeative liquid (1).
Page 105 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Replacing Valve Guide (When removing) 1. Press out the used valve guide using a valve guide replacing tool. (See page “SPECIAL TOOLS”.) (When installing) 1. Clean a new valve guide and valve guide bore, and apply engine oil to them.
Page 106 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Correcting Valve and Valve Seat NOTE • Before correcting the valve and seat, check the valve stem and the I.D. of valve guide section, and repair them if necessary. • After correcting the valve seat, be sure to check the valve recessing.
Page 107 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Free Length and Tilt of Valve Spring 1. Measure the free length (B) of valve spring with vernier calipers. If the measurement is less than the allowable limit, replace it. 2. Put the valve spring on a surface plate, place a square on the side of the valve spring.
Page 108 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Push Rod Alignment 1. Place the push rod on V blocks. 2. Measure the push rod alignment. 3. If the measurement exceeds the allowable limit, replace the push rod. 0.25 mm Push rod alignment Allowable limit 0.0098 in.
Page 109: Timing Gears, Camshaft And Governor Gear
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE (2) Timing Gears, Camshaft and Governor Gear Timing Gear Backlash and Governor 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. 3.
Page 110 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Camshaft Alignment 1. Support the camshaft with V blocks on the surface plate at both end journals. 2. Set a dial indicator with its tip on the intermediate journal. 3. Measure the camshaft alignment. 4.
Page 111 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Oil Clearance between Idle Gear 1 Shaft and Idle Gear Bushing 1. Measure the idle gear shaft 1 O.D. with an outside micrometer. 2. Measure the idle gear bushing I.D. with an inside micrometer, and calculate the oil clearance.
Page 112: Piston And Connecting Rod
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE (3) Piston and Connecting Rod Piston Pin Bore I.D. 1. Measure the piston pin bore I.D. in both the horizontal and vertical directions with a cylinder gauge. 2. If the measurement exceeds the allowable limit, replace the piston.
Page 113 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, 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. 2.
Page 114: Crankshaft
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE (4) Crankshaft Crankshaft Side Clearance 1. Set a dial indicator with its tip on the end of the crankshaft. 2. Measure the side clearance by moving the crankshaft to the front and rear. 3.
Page 115 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Oil Clearance between Crankpin and Crankpin Bearing 1. Clean the crankpin and crankpin bearing. 2. Put a strip of plastigage on the center of the crankpin. 3. Install the connecting rod cap and tighten the connecting rod screws to the specified torque, and remove the cap again.
Page 116 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Oil Clearance between Crankshaft Journal and Crankshaft Bearing 1 1. Measure the O.D. of the crankshaft front journal with an outside micrometer. 2. Measure the I.D. of the crankshaft bearing 1 with an inside micrometer, and calculate the oil clearance.
Page 117 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Oil Clearance between Crankshaft Journal and Crankshaft Bearing 2 (Crankshaft Bearing 3) 1. Put a strip of plastigage on the center of the journal. 2. Install the bearing case and tighten the bearing case screws 1 to the specified torque, and remove the bearing case again.
Page 118: Cylinder
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Replacing Crankshaft Sleeve 1. Remove the used crankshaft sleeve. 2. Set the sleeve guide (2) to the crankshaft. 3. Heat a new sleeve to a temperature between 150 and 200 °C (302 and 392 °F), and fix the sleeve to the crankshaft as shown in figure.
Page 119: Oil Pump
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ENGINE Correcting Cylinder 1. When the cylinder is worn beyond the allowable limit, bore and hone it to the specified dimension. 78.500 to 78.519 mm Factory spec. 3.0906 to 3.0913 in. Oversized cylinder liner I.D.
Page 120 TRANSMISSION KiSC issued 04, 2006 A...
Page 121 MECHANISM CONTENTS 1. STRUCTURE ....................2-M1 2. POWER TRAIN ..................... 2-M2 [1] HYDROSTATIC TRANSMISSION (HST) ..........2-M2 (1) Structure .................... 2-M2 (2) Oil Flow ....................2-M3 (3) Operation ................... 2-M4 (4) Charge Relief Valve ................2-M7 (5) Check and High Pressure Relief Valve ..........2-M8 (6) Control Linkage..................
Page 122: Structure
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION 1. STRUCTURE (1) Hydrostatic Transmission (2) Range Gear Shift Section (4) Differential Gear Section (5) Rear Wheel Drive Section (HST) Section (3) PTO Section (Dual Acting Overrunning Clutch) KiSC issued 04, 2006 A 2-M1...
Page 123: Power Train
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION 2. POWER TRAIN [1] HYDROSTATIC TRANSMISSION (HST) (1) Structure (1) Motor Shaft (8) Oil Seal (14) Retainer Plate (20) Check Valve Spring (2) Needle Bearing (9) Needle Bearing (15) Thrust Plate (21) Relief Valve Spring (3) Thrust Plate (10) Valve Plate (16) Variable Swashplate...
Page 124: Oil Flow
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION (2) Oil Flow (1) Pump (5) Oil Cooler (9) Hydraulic Pump A : To PTO Control Valve (2) Charge Relief Valve (6) Check and High Pressure (10) Check and High Pressure B : From Power Steering (3) Oil Filter Cartridge Relief Valve Relief Valve...
Page 125: Operation
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION (3) Operation Neutral (1) Oil Cooler (7) Cylinder Block (Motor) (13) Pump Shaft A : Port A (2) PTO Charge Relief Valve (8) Motor Shaft (14) Swashplate B : Port B (3) Oil Filter Cartridge (9) Piston (15) Cylinder Block (Pump) C : Port C...
Page 126 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION Forward (1) Oil Cooler (7) Cylinder Block (Motor) (13) Pump Shaft A : Port A (2) PTO Charge Relief Valve (8) Motor Shaft (14) Swashplate B : Port B (3) Oil Filter Cartridge (9) Piston (15) Cylinder Block (Pump) C : Port C...
Page 127 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION Reverse (1) Oil Cooler (7) Cylinder Block (Motor) (13) Pump Shaft A : Port A (2) PTO Charge Relief Valve (8) Motor Shaft (14) Swashplate B : Port B (3) Oil Filter Cartridge (9) Piston (15) Cylinder Block (Pump) C : Port C...
Page 128: Charge Relief Valve
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION (4) Charge Relief Valve The oil from the oil filter cartridge is regulated the setting pressure by the charge relief valve (0.40 to 0.58 MPa, 4.0 to 6.0 kgf/cm , 57 to 85 psi). The regulated oil is fed as charge oil to HST main circuit.
Page 129: Check And High Pressure Relief Valve
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION (5) Check and High Pressure Relief Valve In Neutral The cartridge-type check and high-pressure relief valve consists of pressure poppet (2), check valve seat . The check and high-pressure relief valves are laid out facing each other as shown in the figure.
Page 130: Control Linkage
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION (6) Control Linkage (1) Neutral Spring (5) Speed Control Pedal (9) Brake Rod 1 (12) Ball Bearing (2) Speed Control Rod (6) Speed Control Bracket (10) Brake Return Spring (13) Speed Change Arm (3) Brake Lock Lever (7) Damper Stay (11) Neutral Arm...
Page 131: Range Gear Shift Section
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION 3. RANGE GEAR SHIFT SECTION Two kinds of power flow are selected by operating the range gear shift lever to shift the 15T - 26T gear (7) on the bevel pinion shaft (6). Low Range Motor Shaft (1) →...
Page 132: Rear Wheel Drive Section
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION 4. REAR WHEEL DRIVE SECTION [1] DUAL - ACTING OVERRUNNING FOUR WHEEL DRIVE (1) RWD Shaft 2 (2) Dual-acting Overrunning Clutch (3) RWD Shaft 1 (4) 11T Gear (5) Bevel Pinion Shaft (6) 16T-33T Gear (7) 34T Gear W1017791...
Page 133 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION (1) RWD Shaft 2 (2) Thrust Collar (3) External Snap Ring (4) Washer (5) Brake Shoe (6) Garter Spring (7) Thrust Collar (8) Return Spring (9) Drive Cam (10) Shift Fork (11) RWD Shaft 1 (12) External Snap Ring (13) Clutch Bracket (14) Internal Snap Ring...
Page 134: Basic Actions In Dual-Acting Overrunning 4Wd Mode
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION (1) Basic Actions in Dual-Acting Overrunning 4WD Mode When the engine is not running or the speed change gears are in neutral position The center cam (5) is held against the drive cam (4) by force of the return spring (6).
Page 135 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION When the machine makes a turn As the machine makes a turn, the driven cam (1) produces more turns than the drive cam (4). The center cam (5) is activated by the driven cam (1). The center cam (5) is moved to the right by force of the return spring (6), because the center cam (5) is disengaged from the drive cam (4).
Page 136: Basic Actions In Full-Time 4Wd Mode
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION (2) Basic Actions in Full-Time 4WD Mode When the clutch lever of the dual-acting overrunning 4WD is set at the full-time 4WD position, the shift fork starts turning to push the clutch bracket (5) to the left. By this, the center cam (6) comes into contact with the driven cam (4).
Page 137: Pto Section
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION 5. PTO SECTION PTO “Engage” (1) 28T Gear (5) PTO Shaft (9) Clutch Case (13) Pressure Plate (2) Pump Shaft (6) Coupling (10) Piston (14) 33T Gear (3) Return Spring (7) Clutch Shaft (11) Steel Plate (15) PTO Control Valve (4) PTO Brake Disc...
Page 138 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION PTO “Disengage” (1) 28T Gear (5) PTO Shaft (9) Piston (13) 33T Gear (2) Pump Shaft (6) Coupling (10) Steel Plate (14) PTO Control Valve (3) Return Spring (7) Clutch Shaft (11) Clutch Disc (15) Valve Lever (4) PTO Brake Disc (8) PTO Brake Plate...
Page 139: Differential Gear Section
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION 6. DIFFERENTIAL GEAR SECTION [1] DIFFERENTIAL FUNCTION (1) Bevel Pinion Shaft (2) Differential Case (3) Differential Side Gear (4) Differential Pinion Gear (5) Differential Pinion Shaft (6) Spiral Bevel Gear (7) Differential Side Gear (8) Differential Case W1017697 1.
Page 140: Differential Lock
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION [2] DIFFERENTIAL LOCK (1) Differential Pinion (2) Differential Lock Shift Fork (3) Differential Lock Gear (4) Differential Gear Shaft (5) Differential Lock Clutch (6) Differential Case (7) Differential Pinion Shaft (8) Spiral Bevel Gear (9) Differential Gear Shaft When resistance to the right and left tires are greatly different due to ground conditions or type of work, the tire with less resistance slips and prevents the machine from moving ahead.
Page 141 SERVICING CONTENTS 1. TROUBLESHOOTING ..................2-S1 2. SERVICING SPECIFICATIONS ..............2-S4 3. TIGHTENING TORQUES ................2-S6 4. CHECKING, DISASSEMBLING AND SERVICING........2-S7 [1] CHECKING AND ADJUSTING ...............2-S7 [2] PREPARATION ..................2-S10 (1) Separating Transmission Assembly..........2-S10 (2) Separating Hydrostatic Transmission (HST)........2-S19 (3) Separating Transmission Case............2-S20 (4) Separating Differential Gear Case ............2-S20 [3] DISASSEMBLING AND ASSEMBLING..........2-S22 (1) Hydrostatic Transmission..............2-S22 (2) Hydraulic PTO Clutch Assembly ............2-S24...
Page 142: Troubleshooting
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION 1. TROUBLESHOOTING HYDROSTATIC TRANSMISSION SECTION Reference Symptom Probable Cause Solution Page System Will Not Oil level is low Fill oil to proper level G-7, 2-S10 Operate in Either Control linkage defective (Speed control pedal to Repair control 2-S12, S14, Direction...
Page 143 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION HYDROSTATIC TRANSMISSION SECTION (Continued) Reference Symptom Probable Cause Solution Page Transmission Oil Oil level is low Fill oil to proper level G-7, 2-S10 Runs Too Hot Radiator net clogged Clean or flush –...
Page 144 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION DIFFERENTIAL CASE SECTION Reference Symptom Probable Cause Solution Page Excessive or Improper backlash between bevel pinion shaft Adjust 2-S34 Unusual Noise at All and spiral bevel gear Times Improper backlash between differential case and Adjust 2-S33 differential side gear...
Page 145: Servicing Specifications
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Adjusting Screw Length Approx. 15 mm 15 to 20 mm Approx. 0.59 in. 0.59 to 0.79 in. Check and High Relief Pressure 34.3 MPa –...
Page 146 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION (Continued) Item Factory Specification Allowable Limit Differential Pinion Shaft to Differential Clearance 0.016 to 0.045 mm 0.30 mm Pinion 0.0007 to 0.0018 in. 0.0118 in. Differential Pinion I.D. 16.000 to 16.018 mm –...
Page 147: Tightening Torques
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, 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-8) Item N·m kgf·m ft-lbs Holder shaft mounting screw 23.5 to 27.4 2.40 to 2.79...
Page 148: Checking, Disassembling And Servicing
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING Adjustment of HST Neutral Position 1. Check the adjusting screw length (L). If measurement is not within the factory specifications, adjust the adjusting screw (2). 2.
Page 149 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION Charge Pressure CAUTION • When checking, park the machine on flat ground, apply the parking brake. NOTE • Use a new transmission oil filter cartridge. 1. Remove the seat assembly and plate (1). 2.
Page 150 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION HST High Relief Pressure CAUTION • When checking, park the machine on flat ground, apply the parking brake. 1. Remove the seat assembly and plate (2). 2. Remove the plug (R 1/4) from P1 (1) or P3 (3) port. (P3 is for forward and P1 is for reverse) 3.
Page 151: Preparation
Capacity 14.8 U.S.qts 12.3 Imp.qts IMPORTANT • Use only KUBOTA SUPER UDT fluid. Use of other oils may damage the transmission or hydraulic system. • Refer to “LUBRICANTS, FUEL AND COOLANT” (See page G-7.). • Do not mix different brands fluid together.
Page 152 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION Hydraulic Front Suction Pipe 1. Place oil pans underneath the rubber hose (4) and oil strainer (2). 2. Remove the rubber hose (4) from the front suction pipe (3). 3. Unscrew the front suction pipe mounting screw (1). 4.
Page 153 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION Fender 1. Remove the differential lock pedal (1) and brake lock lever (3). 2. Remove the main brake pedal (2), speed control pedal (4). 3. Remove the lever grips from hydraulic lift lever (5) and PTO lever (7).
Page 154 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION Wirings, Power Steering Hoses and Pipe 1. Remove the accelerator wire (1). 2. Disconnect the connectors (4) (5) (6), and remove the wire harness (2) from the steering post (10). 3. Disconnect the power steering hoses and pipe (3) (7) (8) (9) from the power steering controller (11).
Page 155 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION Speed Control Rod, Lowering Speed Adjusting Rod and Hydraulic Pipes 1. Remove the speed control rod (1). 2. Remove the plate (5). 3. Remove the external snap ring (8) and straight pin (11), and pull out the lowering speed adjusting rod (2).
Page 156 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION Rear Wheel Drive Shaft 1. Slide the external snap ring (2) and coupling (1). 2. Remove the rear wheel drive shaft (3). (When reassembling) • Apply grease to the all splines. IMPORTANT •...
Page 157 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION Fender Support and Connecting Plate 1. Remove the fender supports (1), (3). 2. Remove the connecting plate (2). (1) Fender Support (LH) (3) Fender Support (RH) (2) Connecting Plate W1043605 Lever and Rod 1.
Page 158 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION Support Plate 1. Remove the support plate (1) from the front frame. (1) Support Plate W1044828 Brake Rod, Differential Lock Rod and Mower Lift Lever 1. Remove the brake rod 1 (2) and differential lock rod (1). 2.
Page 159 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION Brake Rod 2 and Front Frame 1. Remove the snap pin (5) and two clevis pins (3), and slide the brake arm 2 (4). 2. Remove the brake rod 2 (1). 3. Remove the brake switch (2). 4.
Page 160: Separating Hydrostatic Transmission (Hst)
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION (2) Separating Hydrostatic Transmission (HST) PTO Pipe, Oil Filter Bracket and RWD Case 1. Unscrew PTO pipe mounting nut (1), and remove PTO pipe (2). 2. Remove the oil filter bracket (4). 3.
Page 161: Separating Transmission Case
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION (3) Separating Transmission Case PTO Clutch Shaft Assembly 1. Remove the range gear shift lever (6). 2. Remove the PTO clutch shaft with hydraulic PTO clutch assembly (5), 33T Gear (2) and 16T-33T gear, and remove the RWD shaft 1 (3) with 34T gear (4).
Page 162 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION Front Axle Case 1. Remove the front axle case (1) from the differential gear case (2). (When reassembling) • Apply liquid gasket (Three Bond 1208D or its equivalent) to joint surface of the differential gear case (2) and front axle cases (1). 39.3 to 44.1 N·m Front axle case mounting Tightening torque...
Page 163: Disassembling And Assembling
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION [3] DISASSEMBLING AND ASSEMBLING (1) Hydrostatic Transmission Gears 1. Remove the ball bearing (4) and 28T gear (5). 2. Remove the external snap ring (3) and 30T gear (2). (1) Center Section (4) Ball Bearing (2) 30T Gear (5) 28T Gear...
Page 164 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION Input Shaft 1. Remove the internal snap ring (4) and remove the oil seal (3). 2. Remove the external snap ring (2). 3. Tap out the input shaft (1) to the cylinder block side. (1) Input Shaft (3) Oil Seal (2) External Snap Ring...
Page 165: Hydraulic Pto Clutch Assembly
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION (2) Hydraulic PTO Clutch Assembly (1) Ball Bearing (2) Needle Bearing (3) 16T-33T Gear (4) Needle Bearing (5) PTO Brake Disc (6) Clutch Case (7) D-ring (8) Piston (9) Return Spring (10) Collar (11) External Snap Ring (12) External Snap Ring (13) PTO Brake Plate...
Page 166: Rwd Case
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION (3) RWD Case RWD Case 1. Remove the external snap ring (6) and pull out the PTO control valve (1). 2. Remove the external snap ring (15) and pull out the shift rod (8), and remove the shift fork (13).
Page 167: Transmission Case
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION Dual-acting Overrunning Clutch Assembly 1. Remove the internal snap ring (1), drive cam (2), pins (3), center cam (4), return spring (5), driven cam (6) and thrust collar (7) from the clutch case (13). 2.
Page 168: Differential Gear Case
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION (5) Differential Gear Case Front Cover 1. Remove the front cover (1) with the PTO shaft (2) from the differential gear case (3). (When reassembling) • Apply liquid gasket (Three Bond 1208D or its equivalent) to joint surface of the differential gear case (3) and front cover (1).
Page 169 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION Differential Side Gear and Differential Pinion 1. Put parting marks on the differential pinion (2) and the differential side gear (1). 2. Tap out the dowel pin (3). 3. Remove the differential pinion shaft. 4.
Page 170: Servicing
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION [4] SERVICING (1) Hydrostatic Transmission Pump Shaft and Motor Shaft 1. Check the seal surface (1) and the bearing surface (2). 2. If the shaft is rough or grooved, replace it. (1) Seal Surface (3) Motor Shaft (2) Bearing Surface (4) Pump Shaft...
Page 171 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION Valve Plate 1. Check the engagement of the valve plate (1) and the anchor pin (2). 2. Pushing the valve plate against the anchor pin, lift it to remove. 3. Check the valve plate for foreign particles. 4.
Page 172: Hydraulic Pto Clutch
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION Charge Relief Valve 1. Check the spring (2) for breakage and wear. 2. If it is unusual, replace it. (1) Valve Plug (3) Valve Poppet (2) Spring W1037317 (2) Hydraulic PTO Clutch PTO Brake Plate and PTO Brake Disc Wear 1.
Page 173: Transmission Case
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION Clearance between Clutch Shaft and 16T-33T Gear 1. Measure 16T-33T gear I.D. with an inside micrometer, and then the clutch shaft O.D. with an outside micrometer. 2. Measure O.D. of two needles in the needle bearing with an outside micrometer.
Page 174: Differential Gear Case
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION (4) Differential Gear Case Clearance between Differential Case (Spiral Bevel Gear) and Differential Side Gear 1. Measure the differential side gear boss O.D. with an outside micrometer. 2. Measure the differential case I.D. and the spiral bevel gear I.D. with an inside micrometer, and calculate the clearance.
Page 175 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TRANSMISSION Backlash between Bevel Pinion Shaft and Spiral Bevel Gear (1) Shim (2) Shim (3) Bevel Pinion Shaft (4) Shim (5) Bearing Holder (6) Spiral Bevel Gear W1029105 1. Set the dial indicator (lever type) with its finger on the end of spiral bevel pinion shaft (3). 2.
Page 176: Front Axle
FRONT AXLE KiSC issued 04, 2006 A...
Page 177 MECHANISM CONTENTS 1. STRUCTURE ....................3-M1 KiSC issued 04, 2006 A...
Page 178 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM FRONT AXLE 1. STRUCTURE (1) Differential Gear Shaft (3) Front Axle Case (5) 57T Gear (7) Spiral Bevel Gear (2) Ball Bearing (4) Front Axle (6) Ball Bearing (8) Differential Gear Assembly The front axles are the semifloating type with ball bearings (2), (6) between the front axle (4) and the front axle case (3) which supports the front wheel load as well as transmitting power to the front wheels.
Page 179 SERVICING CONTENTS 1. TROUBLESHOOTING ..................3-S1 2. TIGHTENING TORQUES ................3-S2 3. CEHCKING, DISASSEMBLING AND SERVICING........3-S3 [1] PREPARATION ..................3-S3 [2] DISASSEMBLING AND ASSEMBLING..........3-S4 KiSC issued 04, 2006 A...
Page 180: Troubleshooting
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM FRONT AXLE 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Differential Lock can Differential lock shift fork damaged Replace 3-S4 not be Set Differential lock clutch damaged Replace 3-S4 Differential Lock Differential lock pedal return spring weaken or Replace –...
Page 181: Tightening Torques
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM FRONT AXLE 2. 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-8.) Item N·m kgf·m ft-lbs Front axle case mounting screw and nut 39.3 to 44.1...
Page 182: Cehcking, Disassembling And Servicing
Capacity 14.8 U.S.qts 12.3 Imp.qts IMPORTANT • Use only KUBOTA SUPER UDT fluid. Use of other oils may damage the transmission or hydraulic system. • Refer to “LUBRICANTS, FUEL AND COOLANT” (See page G-7.). • Do not mix different brands fluid together.
Page 183: Disassembling And Assembling
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM FRONT AXLE Separating Front Axle Case 1. Support the differential gear case, and remove the front wheel. 2. Remove the support plate (2). 3. Remove the assist spring (3), mower lift arm (1) and brake return spring (4).
Page 184 BRAKES KiSC issued 04, 2006 A...
Page 185 MECHANISM CONTENTS 1. FEATURES ....................4-M1 2. OPERATION ....................4-M2 KiSC issued 04, 2006 A...
Page 186 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM BRAKES 1. FEATURES (1) Return Spring (2) Brake Cam Lever (3) Brake Rod 1 (4) Brake Rod 2 (5) Parking Lock Lever (6) Main Brake Pedal (7) Speed Control Bracket (8) Brake Arm 1 (9) Brake Arm 2 (10) Turnbuckle (11) Front Axle Case...
Page 187 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM BRAKES 2. OPERATION (1) Front Axle Case (4) Friction Plate (6) Actuator (8) Bearing Holder (2) Brake Cam Lever (5) Steel Ball (7) Brake Disc (9) Differential Gear Shaft (3) Brake Cam The brake body is incorporated in the front axle case (1) filled with transmission oil and is designed to brake when the brake disc (7) splined with the differential gear shaft (9) is pressed against the actuator (6) by means of the cam mechanism incorporating steel balls (5).
Page 188 SERVICING CONTENTS 1. TROUBLESHOOTING ..................4-S1 2. SERVICING SPECIFICATIONS ..............4-S2 3. TIGHTENING TORQUES ................4-S3 4. CHECKING, DISASSEMBLING AND SERVICING........4-S4 [1] CHECKING AND ADJUSTING ...............4-S4 [2] DISASSEMBLING AND ASSEMBLING..........4-S5 (1) Brake Pedal ..................4-S5 (2) Brake Assembly ..................4-S6 [3] SERVICING ....................4-S9 KiSC issued 04, 2006 A...
Page 189: Troubleshooting
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM BRAKES 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Uneven Braking Brake pedal free travel unevenly adjusted Adjust 4-S4 Force Brake disc worn Replace 4-S9 Actuator warped Replace 4-S9 Brake Drags Brake pedal free travel too small Adjust 4-S4 Ball hoses of actuator for uneven wear...
Page 190: Servicing Specifications
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM BRAKES 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Brake Pedal Free Travel 20 mm 20 to 30 mm 0.79 in. 0.79 to 1.18 in. Main Brake Pedal Force 373 to 411 N –...
Page 191: Tightening Torques
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM BRAKES 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-8.) Item N·m kgf·m ft-lbs Front axle case mounting screw and nut 39.3 to 44.1 4.0 to 4.5...
Page 192: Checking, Disassembling And Servicing
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM BRAKES 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING Brake Pedal Free Travel 1. Press the main brake pedal five times with a force of 147 to 294 N (15 to 30 kgf, 33 to 66 lbs). 2.
Page 193: Disassembling And Assembling
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM BRAKES [2] DISASSEMBLING AND ASSEMBLING (1) Brake Pedal Removing Brake Pedal and Links (1) Brake Rod 2 (2) Return Spring (3) Brake Rod 1 (4) Brake Arm 1 (5) Brake Arm 2 (6) Brake Shaft (7) Speed Control Bracket W1011962 1.
Page 194: Brake Assembly
Capacity 14.8 U.S.qts 12.3 Imp.qts IMPORTANT • Use only KUBOTA SUPER UDT fluid. Use of other oils may damage the transmission or hydraulic system. • Refer to “LUBRICANTS, FUEL AND COOLANT” (See page G-7.). • Do not mix different brands fluid together.
Page 195 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM BRAKES Separating Front Axle Case 1. Support the differential gear case, and remove the front wheel. 2. Remove the support plate (2). 3. Remove the assist spring (3), mower lift arm (1) and brake return spring (4).
Page 196 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM BRAKES Brake Assembly 1. Remove the internal snap ring (4). 2. Remove the differential gear shaft (2) with brake discs (5). 3. Remove the actuator (6) and steel balls (7). (When reassembling) • When installing the internal snap ring (4) to front axle case (3) as shown in the figure.
Page 197: Servicing
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM BRAKES [3] SERVICING Brake Cam Lever Movement 1. Move the brake cam lever by hand to check the side to side movement. 2. If the movement is heavy, smooth the brake cam with emery paper.
Page 198: Rear Axle
REAR AXLE KiSC issued 04, 2006 A...
Page 199 MECHANISM CONTENTS 1. STRUCTURE ....................5-M1 KiSC issued 04, 2006 A...
Page 200 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM REAR AXLE 1. STRUCTURE (1) Rear Wheel Hub (7) Tie-Rod (13) Differential Gear Case (19) Differential Side Gear (2) Rear Axle Cover (8) Differential Gear Assembly (14) Differential Yoke Shaft (Left) (20) Differential Yoke Shaft (Right) (3) Bevel Gear (9) Differential Pinion Gear (15) Rear Axle Bracket (Front)
Page 201 SERVICING CONTENTS 1. TROUBLESHOOTING ..................5-S1 2. SERVICING SPECIFICATIONS ..............5-S2 3. TIGHTENING TORQUES ................5-S3 4. CHECKING, DISASSEMBLING AND SERVICING........5-S4 [1] CHECKING AND ADJUSTING ...............5-S4 [2] PREPARATION ..................5-S5 (1) Separating Rear Axle................5-S5 [3] DISASSEMBLING AND ASSEMBLING..........5-S8 [4] SERVICING ....................5-S12 KiSC issued 04, 2006 A...
Page 202: Troubleshooting
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM REAR AXLE 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Rear Wheels Wander Tire pressure uneven Adjust G-43 to Right of Left Improper toe-in adjustment (improper alignment) Adjust 5-S4 Clearance between rear axle case boss and rear Replace 5-S15 axle bracket (front, rear) excessive...
Page 203: Servicing Specifications
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM REAR AXLE 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Rear Wheel Alignment Toe-in 0 to 10 mm – 0.00 to 0.39 in. Rear Axle Rocking Force 49.1 to 117.6 N – 5.0 to 12.0 kgf 11.1 to 26.4 lbs Knuckle Arm Support to Knuckle Arm Clearance...
Page 204: Tightening Torques
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM REAR 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-8.) Item N·m kgf·m ft-lbs Lock nut of rocking force adjusting screw 23.6 to 27.4...
Page 205: Checking, Disassembling And Servicing
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM REAR AXLE 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING Toe-in 1. Inflate the tires to the specified pressure. 2. Turn the rear wheels straight ahead. 3. Measure the toe-in (B-A). 4. If the measurement is not within the factory specifications, replace the tie-rod.
Page 206: Preparation
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM REAR AXLE [2] PREPARATION (1) Separating Rear Axle Draining Rear Axle Gear Case Oil 1. Place oil pans underneath the rear axle gear case. 2. Remove the drain plug (3) with hexagonal wrench (2), and remove the oil filler plug (1).
Page 207 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM REAR AXLE Drag Link 1. Remove the slotted nut and disconnect the drag link (2) from the knuckle arm (1). (When reassembling) IMPORTANT • After tightening the slotted nut to the specified torque, install the cotter pin as shown in the figure.
Page 208 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM REAR AXLE Rear Axle 1. Place the jacks under the rear axle, and lift up the rear axle frame. 2. Remove the rear axle bracket mounting screws and nuts. 3. Separate the rear axle from the rear axle frame. 4.
Page 209: Disassembling And Assembling
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM REAR AXLE [3] DISASSEMBLING AND ASSEMBLING Separation of Rear Axle Differential Case and Bevel Gear Case 1. Remove the bevel gear case (2) and rear axle gear case (3) as a unit from the rear axle differential case (1). (When reassembling) •...
Page 210 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM REAR AXLE Separation of Bevel Gear Case and Rear Axle Gear Case 1. Remove the internal snap ring (7) and shims (6), and remove the bevel gear (5) with the bearing. 2. Shift the external snap ring (8). 3.
Page 211 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM REAR AXLE Axle Flange and Rear Wheel Hub 1. Unscrew the axle flange mounting screw (8). 2. Separate the axle flange (7) from the rear axle gear case (1). 3. Remove the bearing (2), bevel gear (3) and collars (4). 4.
Page 212 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM REAR AXLE Differential Gear Assembly 1. Tap out the spring pins (2), and remove the left and right differential yoke shafts (1), (3) from differential assembly. 2. Remove the thrust collars (4), (8) and differential side gears (5), (7) from the differential case (12).
Page 213: Servicing
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM REAR AXLE [4] SERVICING Clearance between Knuckle Arm Support and Knuckle Arm 1. Tighten the knuckle arm mounting screws to the specified torque. 2. Measure the clearance between the knuckle arm support and knuckle arm with a feeler gauge.
Page 214 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM REAR AXLE Clearance between Differential Pinion Gear and Differential Case 1. Measure the differential pinion gear boss O.D.. 2. Measure the differential case bore I.D., and calculate the clearance. 3. If the clearance exceeds the allowable limit, replace faulty parts. 0.032 to 0.068 mm Factory spec.
Page 215 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM REAR AXLE Backlash between Bevel Pinion Shaft and Bevel Gear 1. Set a dial gauge (lever type) with its finger on the spline of bevel pinion shaft. 2. Measure the backlash by moving the bevel pinion shaft by hand lightly.
Page 216 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM REAR AXLE Outside Diameter of Rear Axle Case Bosses and Inside Diameter of Rear Axle Bracket 1. Measure the rear axle case bosses O.D. with an outside micrometer. 2. Measure the rear axle bracket I.D. with a cylinder gauge. (Reference) Rear axle case boss 64.910 to 64.940 mm...
Page 217 STEERING KiSC issued 04, 2006 A...
Page 218 MECHANISM CONTENTS 1. STRUCTURE ....................6-M1 2. STEERING CONTROLLER ................6-M2 KiSC issued 04, 2006 A...
Page 219 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM STEERING 1. STRUCTURE (1) Steering Cylinder (4) PTO Relief Valve (7) Oil Strainer EF :EF Port (2) Steering Controller (5) Oil Filter Cartridge (8) Hydraulic Pump PF :PF Port (3) Oil Cooler (6) Hydrostatic Transmission (9) Flow Priority Valve P : P Port (HST)
Page 220 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM STEERING 2. STEERING CONTROLLER The steering controller (2) consists of a control valve (6) and a metering device (5) Control Valve The control valve is a rotating spool type. When the steering wheel is not turned, the position of the spool (7) and sleeve (9) is kept neutral by the centering spring (8).
Page 221 SERVICING CONTENTS 1. TROUBLESHOOTING ..................6-S1 2. SERVICING SPECIFICATIONS ..............6-S2 3. TIGHTENING TORQUES ................6-S3 4. CHECKING, DISASSEMBLING AND SERVICING........6-S4 [1] CHECKING AND ADJUSTING ...............6-S4 (1) Relief Valve..................6-S4 [2] PREPARATION ..................6-S5 (1) Separating Power Steering Controller ..........6-S5 (2) Separating Steering Support...............6-S6 [3] DISASSEMBLING AND ASSEMBLING..........6-S7 (1) Steering Support .................6-S7 [4] SERVICING ....................6-S8 (1) Steering Cylinder ................6-S8...
Page 222: Troubleshooting
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM STEERING 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Cannot Be Steered Steering controller malfunctioning Replace 6-S6 Hose broken Replace 6-S6 Hard Steering Power steering oil improper Change with specified oil Hydraulic pump malfunctioning Replace 7-S6 Priority valve malfunctioning...
Page 223: Servicing Specifications
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM STEERING 2. SERVICING SPECIFICATIONS POWER STEERING BODY Item Factory Specification Allowable Limit Relief Valve Setting Pressure 10.8 to 11.3 MPa – 110.2 to 115.2 kgf/cm 1567 to 1638 psi W1013874 STEERING CYLINDER Cylinder Length (Rod End to Rod End) 439 to 441 mm –...
Page 224: Tightening Torques
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, 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-8.) Item N·m kgf·m ft-lbs Power steering hose mounting nut 24.6 to 29.4 2.5 to 3.0...
Page 225: Checking, Disassembling And Servicing
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM STEERING 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING (1) Relief Valve Relief Valve Setting Pressure 1. Disconnect the power steering hose 1 (or 2) from cylinder joint, and set a pressure gauge (Code No. : 07916-50321) between them using power steering adaptor (1) (Code No.
Page 226: Preparation
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM STEERING [2] PREPARATION (1) Separating Power Steering Controller Battery CAUTION • When disassembling the battery cables, disconnect the negative cable from the battery first. When connecting, connect the positive cable to the battery first. 1.
Page 227: Separating Steering Support
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM STEERING Power Steering Hose, Pipe and Controller 1. Disconnect the power steering hoses and pipe (3), (4), (5), (6). 2. Unscrew the power steering controller mounting screws (2), and remove the power steering controller (1). (When reassembling) •...
Page 228: Disassembling And Assembling
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM STEERING [3] DISASSEMBLING AND ASSEMBLING (1) Steering Support Steering Shaft 1. Remove the power steering controller (2). 2. Unscrew the universal joint mounting screw (3), and remove the universal joint (1). 3. Remove the external snap rings (4), (10) and washers (5), (9) from the steering shaft (7).
Page 229: Servicing
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM STEERING [4] SERVICING (1) Steering Cylinder Cylinder Length 1. The length between rod ends is important. When reassembling the rod ends, set the cylinder to the shortest position and adjust the length “A”. 439 to 441 mm Length “A”...
Page 230: Hydraulic System
HYDRAULIC SYSTEM KiSC issued 04, 2006 A...
Page 231 MECHANISM CONTENTS 1. HYDRAULIC CIRCUIT .................. 7-M1 2. HYDRAULIC PUMP ..................7-M2 3. FLOW PRIORITY VALVE ................7-M3 4. RELIEF VALVE ..................... 7-M4 5. IMPLEMENT CONTROL VALVE ..............7-M5 6. FEEDBACK LINKAGE .................. 7-M6 7. HYDRAULIC CYLINDER ................7-M7 KiSC issued 04, 2006 A...
Page 232: Hydraulic Circuit
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM HYDRAULIC SYSTEM 1. HYDRAULIC CIRCUIT (1) Steering Cylinder (7) Orifice (13) Filter Cartridge EF :EF Port (2) Steering Controller (8) Relief Valve (14) PTO Charge Relief Valve PF :PF Port (3) Hydraulic Block Type Outlet (9) Hydraulic Pump (15) Oil Cooler P : P Port...
Page 233: Hydraulic Pump
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM HYDRAULIC SYSTEM 2. HYDRAULIC PUMP The hydraulic pump is composed of the case (1), cover (3), side plate (5), and two spur gears (drive gear (4) and driven gear (2)). Hydraulic pump is driven by the governor shaft. Displacement Engine speed Condition...
Page 234: Flow Priority Valve
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM HYDRAULIC SYSTEM 3. FLOW PRIORITY VALVE The flow priority valve is a flow divider that divides the flow from single hydraulic source (hydraulic pump) to actuates two circuits (position control circuit and power steering circuit) simultaneously.
Page 235: Relief Valve
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM HYDRAULIC SYSTEM 4. RELIEF VALVE The implement control system circuit has a relief valve to restrict the maximum pressure in the circuit. The relief valve is located top of the hydraulic cylinder body. The relief valve is of the guide piston type with damping effect.
Page 236: Implement Control Valve
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM HYDRAULIC SYSTEM 5. IMPLEMENT CONTROL VALVE This implement control valve is located under the hydraulic cylinder block. Neutral Oil forced into the implement control valve (1) through P port and returns to the transmission case through T2 port.
Page 237: Feedback Linkage
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM HYDRAULIC SYSTEM 6. FEEDBACK LINKAGE When the hydraulic control lever 1 (1) is moved to rearward to lift the implement, the spool of the implement control valve (7) is pulled out to form a raising circuit. Then the lift arm (9) begins to rise.
Page 238: Hydraulic Cylinder
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM HYDRAULIC SYSTEM 7. HYDRAULIC CYLINDER (1) Lowering Speed Adjusting (4) Hydraulic Cylinder Case (7) Lift Arm (10) Back-up Ring Shaft (5) Relief Valve (8) Implement Control Valve (11) O-ring (2) Lowering Speed Adjusting (6) Hydraulic Arm (9) Hydraulic Rod (12) Piston...
Page 239 SERVICING CONTENTS 1. TROUBLESHOOTING ..................7-S1 2. SERVICING SPECIFICATIONS ..............7-S2 3. TIGHTENING TORQUES ................7-S3 4. CHECKING, DISASSEMBLING AND SERVICING........7-S4 [1] CHECKING AND ADJUSTING ...............7-S4 (1) Hydraulic Pump and Flow Priority Valve..........7-S4 (2) Hydraulic Cylinder Assembly ..............7-S5 [2] DISASSEMBLING AND ASSEMBLING..........7-S6 (1) Hydraulic Pump and Flow Priority Valve..........7-S6 (2) Hydraulic Cylinder Assembly ..............7-S7 [3] SERVICING ....................7-S11 (1) Hydraulic Pump.................7-S11...
Page 240: Troubleshooting
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM HYDRAULIC SYSTEM 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Implement Does Not Control valve broken Replace 7-S8 Rise (No Noise) Control valve improperly assembled Assemble 7-S8 Relief valve spring damaged Replace 7-S10 Spool sticks Repair 7-S8...
Page 241: Servicing Specifications
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM HYDRAULIC SYSTEM 2. SERVICING SPECIFICATIONS HYDRAULIC PUMP Item Factory Specification Allowable Limit Hydraulic Pump Delivery 29.0 L/min. – (At No Pressure) Above 7.6 U.S.GPM 6.3 Imp.GPM Delivery (At 9.8 MPa 24.0 L/min. 21.0 L/min. 100 kgf/cm Above 6.3 U.S.GPM 5.5 U.S.GPM...
Page 242: Tightening Torques
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, 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-8.) Item N·m kgf·m ft-lbs Engine stop solenoid mounting screw 9.80 to 11.2...
Page 243: Checking, Disassembling And Servicing
(1) Hydraulic Pump and Flow Priority Valve Flowmeter Connecting and Test Preparation IMPORTANT • When using a flowmeter other than KUBOTA specified flowmeter (Code No. 07916-52791), be sure to use the instructions with that flowmeter. • In this hook-up, there is no relief valve.
Page 244: Hydraulic Cylinder Assembly
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM HYDRAULIC SYSTEM Flow Priority Valve Test NOTE • Before flow priority valve testing, perform the “Flowmeter Connecting and Test Preparation”. (See page 7-S4.) 1. Open the loading valve completely. 2. Start the engine and set at approx. 2700 min (rpm).
Page 245: Disassembling And Assembling
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM HYDRAULIC SYSTEM [2] DISASSEMBLING AND ASSEMBLING (1) Hydraulic Pump and Flow Priority Valve Removing Hydraulic Pump and Flow Priority Valve 1. Remove the engine stop solenoid (2). 2. Remove the delivery hoses (1), (8). 3.
Page 246: Hydraulic Cylinder Assembly
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM HYDRAULIC SYSTEM (2) Hydraulic Cylinder Assembly Battery CAUTION • When disconnecting the battery cables, disconnect the negative cable from the battery first. When connecting, connect the positive cable to the battery first. 1. Disconnect the negative cable (4) from the battery. 2.
Page 247 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM HYDRAULIC SYSTEM Separating Hydraulic Cylinder Assembly 1. Remove the hydraulic cylinder assembly mounting screws and nuts, and separate the hydraulic cylinder assembly (1). (When reassembling) Hydraulic cylinder 39.2 to 44.1 N·m Tightening torque assembly mounting screw 4.0 to 4.5 kgf·m and nut...
Page 248 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM HYDRAULIC SYSTEM Lift Arm, Hydraulic Arm Shaft and Hydraulic Arm 1. Remove the external snap ring, and remove the lift arm LH (1). 2. Pull out the hydraulic arm shaft (4) and lift arm RH (2) as a unit. (When reassembling) •...
Page 249 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM HYDRAULIC SYSTEM Relief Valve 1. Remove the plug (1), and remove the shims (2), (3), spring (4), poppet (5) and the valve seat (6). (When reassembling) • Take care not to damage the O-ring. 49.0 to 68.6 N·m Tightening torque Relief valve plug...
Page 250: Servicing
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM HYDRAULIC SYSTEM [3] SERVICING (1) Hydraulic Pump Clearance between Tip of Gear Tooth and Casing 1. Measure the gear shaft O.D. with an outside micrometer. 2. Measure the bush I.D. with a cylinder gauge, and calculate the clearance.
Page 251: Hydraulic Cylinder
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM HYDRAULIC SYSTEM (2) Hydraulic Cylinder Hydraulic Cylinder Bore 1. Check the cylinder internal surface for scoring or damage. 2. Measure the cylinder I.D. with a cylinder gauge. 3. If the measurement exceeds the allowable limit, replace the hydraulic cylinder block.
Page 252: Electrical System
ELECTRICAL SYSTEM KiSC issued 04, 2006 A...
Page 253 MECHANISM CONTENTS 1. WIRING DIAGRAM ..................8-M1 2. STARTING SYSTEM ..................8-M3 [1] OPERATOR PRESENCE CONTROL (OPC) SYSTEM....... 8-M3 (1) Related Switches and Controller............8-M4 (2) Operation ................... 8-M5 KiSC issued 04, 2006 A...
Page 254: Wiring Diagram
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36 WSM ELECTRICAL SYSTEM 1. WIRING DIAGRAM Controller Brake Fuel PTO Switch Work Horn Relay Switch Fuse Box Sensor Horn Light Head Lamp Fuel Pomp Frame Earth 12 V 55 W Seat Switch Main Switch 2 RW 3 BR 3 BY...
Page 255 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM Color of wiring W..White O..Orange RW..Red / White BY..Black / Yellow R..Red WB..White / Black RG..Red / Green YR..Yellow / Red L..Blue WR..White / Red RY..Red / Yellow YG..Yellow / Green Y..Yellow WG..White / Green BW..Black / White...
Page 256: Starting System
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM 2. STARTING SYSTEM [1] OPERATOR PRESENCE CONTROL (OPC) SYSTEM (1) Battery (2) Starter (3) Slow Blow Fuse (50A) (4) Main Switch (5) Fuse (5A) (6) Glow Plug (7) Glow Plug Lamp (8) Seat Switch (9) PTO Switch (10) Brake Switch...
Page 257: Related Switches And Controller
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM (1) Related Switches and Controller Seat Switch The seat switch is located in the bottom of seat (2). This switch is the open type. In normal operating condition, the switch is open circuit. When sitting on the seat, the seat switch (1) is turned “ON”.
Page 258: Operation
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM (2) Operation Starting the Engine (1) Battery (6) Glow Plug (11) Controller [A] When the main switch is (2) Starter (7) Glow Plug Lamp (12) Frame Earth turned to the “ON” position (3) Slow Blow Fuse (50A) (8) Seat Switch (13) Engine Stop Solenoid...
Page 259 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM Stopping the Engine, Automatically (1) Battery (6) Glow Plug (11) Controller [A] Condition 1 (2) Starter (7) Glow Plug Lamp (12) Frame Earth [B] Condition 2 (3) Slow Blow Fuse (50A) (8) Seat Switch (13) Engine Stop Solenoid [C] Condition 3...
Page 260 SERVICING CONTENTS 1. TROUBLESHOOTING ..................8-S1 2. SERVICING SPECIFICATIONS ..............8-S4 3. TIGHTENING TORQUES ................8-S5 4. CHECKING, DISASSEMBLING AND SERVICING........8-S6 [1] CHECKING AND ADJUSTING ...............8-S6 (1) Battery....................8-S6 (2) Main Switch..................8-S6 (3) Starter ....................8-S8 (4) Glow Plug....................8-S9 (5) Safety Switch ..................8-S9 (6) Fuel Pump..................8-S10 (7) Engine Stop Solenoid ...............8-S11 (8) Charging System ................8-S11 (9) Lighting System ................8-S13...
Page 261: Troubleshooting
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page All Electrical Battery discharged or defective Recharge or replace 8-S4 Equipment Does Not Battery positive cable disconnected or Repair or replace 8-S4 Operate improperly connected Battery negative cable disconnected or Repair or replace...
Page 262 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM CHARGING SYSTEM Reference Symptom Probable Cause Solution Page Charging Lamp Does Fuse blown Replace G-34 Not Light When Main Bulb blown Replace G-34 Switch Is Turned Wiring harness disconnected or improperly Repair or replace –...
Page 263 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM OPERATOR PRESENCE CONTROL Reference Symptom Probable Cause Solution Page Engine Does Not Seat switch defective Replace 8-S9 Stop When Operator PTO switch defective Replace 8-S10 Leaves Seat (PTO Controller defective Replace G-19, 6-S6 Lever Is Set at “ENGAGE”...
Page 264: Servicing Specifications
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM 2. SERVICING SPECIFICATIONS STARTER Item Factory Specification Allowable Limit Commutator O.D. 28.0 mm 27.0 mm 1.10 in. 1.06 in. Difference of Less than 0.05 mm 0.40 mm O.D.’s 0.0020 in. 0.0157 in. Mica Undercut 0.50 to 0.80 mm...
Page 265 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, 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-8) Item N·m kgf·m ft-lbs Starter B terminal nut...
Page 266: Checking, Disassembling And Servicing
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING 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 267 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM Main Switch Continuity 1) Main Switch Key at OFF Position 1. Set the main switch OFF position. 2. Measure the resistance with an ohmmeter across the B terminal and the AC terminal, B terminal and ST terminal, B terminal and G terminal.
Page 268: Starter
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM (3) Starter M Terminal Voltage 1. Measure the voltage with a voltmeter between the M terminal and the chassis. 2. If the voltage differs from the battery voltage, the battery’s positive cable or the battery negative cable is faulty. Voltage Factory spec.
Page 269: Glow Plug
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM (4) Glow Plug Lead Terminal Voltage 1. Disconnect the 1P connector (1) from the glow plug (2) after turning the main switch off. 2. Turn the main switch key to the “PREHEAT” position, and measure the voltage between the lead terminal and the chassis.
Page 270: Fuel Pump
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM PTO Switch Continuity 1. Disconnect the 2P connector for the PTO switch (1). 2. Using an ohmmeter, check for continuity between the switch terminals when the PTO lever is set at “ENGAGE” position. 3.
Page 271: Engine Stop Solenoid
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM (7) Engine Stop Solenoid Connector Voltage 1. Disconnect the 2P connector from the engine stop solenoid. 2. Turn the main switch key to the “ON” position, and measure the voltage with a voltmeter between the connector terminal (White/ Blue) and the chassis.
Page 272 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM Connector Voltage 1. Turn the main switch OFF. Measure the voltage between the B terminal (1) and the chassis. 2. Turn the main switch ON. Measure the voltage between the IG terminal (3) and the chassis.
Page 273: Lighting System
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM (9) Lighting System Head Light Switch Connector Voltage 1. Remove the front panel. 2. Disconnect the connector from the head light switch (1). 3. Turn the main switch key to the “ON” position, and measure the voltage with a voltmeter between the connector terminal (Red/ Blue) and the chassis.
Page 274: Cooling System
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM (10) Cooling System Coolant Temperature Switch Connector Voltage 1. Disconnect the 1P connector from the thermo switch (1). 2. Turn the main switch key to the "ON" position, and measure the voltage with a voltmeter between the connector terminal and the chassis.
Page 275 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM Coolant Temperature Sensor 1) Lead Terminal Voltage 1. Disconnect the lead from the coolant temperature sensor after turning the main switch OFF. 2. Turn the main switch ON and measure the voltage with a voltmeter across the lead terminal and the chassis.
Page 276: Disassembling And Assembling
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM [2] DISASSEMBLING AND ASSEMBLING (1) Starter Disassembling Starter (1) Solenoid Switch Mounting Nut (2) Starter Drive Housing (3) Drive Lever (4) Gasket (5) Solenoid Switch (6) B Terminal Nut (7) C Terminal Nut (8) Snap RIng (9) Overrunning Clutch (10) Armature...
Page 277: Alternator
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM (2) Alternator 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. (When reassembling) 58.3 to 78.9 N·m Tightening torque...
Page 278 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM Rear End Frame 1. Unscrew the two nuts and two screws holding the drive end frame and the rear end frame. 2. Remove the rear end frame (1). (1) Rear End Frame W10192740 Rotor 1.
Page 279: Servicing
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM [3] SERVICING (1) Starter Overrunning Clutch 1. Check the pinion and if worn or damage, replace the clutch assembly. 2. Check that the pinion turns freely and smoothly in the overrunning direction and does not slip in the cranking direction. 3.
Page 280 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM Commutator and Mica 1. Check the contact of the commutator for wear, and highly clean the commutator with emery paper if it is slightly worn. 2. Measure the commutator O.D. with an outside micrometer at several points.
Page 281 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM Brush Holder 1. Check the continuity across the brush holder and the holder support with a circuit tester. 2. If it conducts, replace the brush holder. W1156895 Armature Coil 1. Check the continuity across the commutator and armature coil core with resistance range of circuit tester.
Page 282: Alternator
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM (2) Alternator Bearing 1. Check the bearing for smooth rotation. 2. If it does not rotate smoothly, replace it. W1019790 Stator 1. Measure the resistance across each lead of the stator coil with resistance range of circuit tester.
Page 283 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM ELECTRICAL SYSTEM Rectifier 1. Check the continuity across each diode of rectifier with resistance range of circuit tester. 2. The rectifier is normal if the diode in the rectifier conducts in one direction and does not conduct in the reverse direction. W1020452 IC Regulator 1.
Page 284 MOWER KiSC issued 04, 2006 A...
Page 285 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM SAFETY INSTRUCTIONS SAFETY INSTRUCTIONS SAFETY DECALS The following safety decals are installed on the mower. If a decal becomes damaged, illegible or is not on the mower, replace it. The decal part number is listed in the parts list.
Page 286 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM SAFETY INSTRUCTIONS KiSC issued 04, 2006 A...
Page 287 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TERMINOLOGY TERMINOLOGY [RCK72-F36] (1) Mower Deck (4) Center Frame (7) Discharge Deflector (10)Shield (2) Front Roller (5) Front Gauge Wheel (8) Anti-Scalp Roller (11)Gauge Wheel Arm LH (3) Gear Box (6) Gauge Wheel Arm RH (9) Universal Joint (12) Blade [RCK72R-F36]...
Page 288 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM TERMINOLOGY [RCK60-F36] (1) Mower Deck (4) Center Frame (7) Discharge Deflector (10)Shield (2) Front Roller (5) Front Gauge Wheel (8) Anti-Scalp Roller (11)Gauge Wheel Arm LH (3) Gear Box (6) Gauge Wheel Arm RH (9) Universal Joint (12) Blade [RCK60R-F36]...
Page 289 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM SPECIFICATIONS SPECIFICATIONS Model RCK72-F36 RCK72R-F36 RCK60-F36 RCK60R-F36 Suitable front mower F2880, F3680 Mounting method 2 point linkage Adjustment of cutting height Gauge wheel Cutting width 1826 mm (71.9 in.) 1524 mm (60 in.) Cutting height 25 to 129 mm (1.0 to 5.0 in.) Discharge sirection...
Page 290 MECHANISM CONTENTS 1. POWER TRANSMISSION ................9-M1 KiSC issued 04, 2006 A...
Page 291 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER 1. POWER TRANSMISSION (1) Center Pulley (6) Pinion Shaft (11) Dust Cover (16) Blade Boss (2) Bevel Gear (7) Feather Key (12) Blade (Side) (17) Dust Cover (3) Collar (8) Side Pulley (13) Blade Boss (18) Center Pulley Holder (4) Bevel Gear...
Page 292 SERVICING CONTENTS 1. GENERAL .......................9-S1 [1] MOWER IDENTIFICATION ..............9-S1 [2] GENERAL PRECAUTION ...............9-S1 [3] LUBRICANTS ...................9-S2 [4] TIGHTENING TORQUES ................9-S2 (1) General Use Screws, Bolt and Nuts ...........9-S2 (2) Metric Screws, Bolts and Nuts ............9-S3 (3) American Standard Screws, Bolts and Nuts with UNC or UNF Threads ....................9-S3 (4) Plugs ....................9-S3 [5] MAINTENANCE CHECK LIST..............9-S4...
Page 293: General
Screws, bolts and nuts should be installed in their original position to prevent reassembly errors. • When special tools are required, use KUBOTA genuine special tools. Special tools which are not frequently used should be made according to the drawings provided.
Page 294: Lubricants
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER [3] LUBRICANTS Capacity Place Lubricants RCK72-F36 / RCK72R-F36 RCK60-F36 / RCK60R-F36 0.4 L SAE 90 gear oil Gear box 0.43 U.S.qts. (API Service GL-5 gear oil) 0.35 lmp.qts. Greasing Universal joint Bevel gear shaft and blade shafts Belt tension pulley Until grease overflows SAE multi-purpose type grease...
Page 295: Metric Screws, Bolts And Nuts
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER (2) Metric Screws, Bolts and Nuts Property class 8.8 Property class 10.9 Grade Unit N·m kgf·m ft-lbs N·m kgf·m ft-lbs Nominal Diameter 23.6 to 27.4 2.40 to 2.80 17.4 to 20.2 29.4 to 34.3 3.00 to 3.50 21.7 to 25.3 48.1 to 55.8...
Page 296: Maintenance Check List
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER [5] MAINTENANCE CHECK LIST To keep the mower working in good condition as well as to avoid any accident and trouble, carry out periodic inspection and maintenance. Check the following points before use. Reference Service interval Check Points...
Page 297: Check And Maintenance
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER [6] CHECK AND MAINTENANCE (1) Check Points of Daily of Each Use Retightening Mower Blade Screw CAUTION • To avoid injury, always handle the mower blade with care. 1. Dismount the mower and turn it over to expose the mower blades.
Page 298 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER Greasing Spindle Shafts 1. Grease the grease nipples (1), (2) of the spindle shafts if the amount of grease is insufficient. (1) Grease Nipple (Bevel Gear Shaft) (2) Grease Nipple (Blade Shaft) W1015209 Greasing Belt Tension Pulley and Greasing Belt Tension Pivot 1.
Page 299: Check Point Of Initial 50 Hours
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER (2) Check Point of Initial 50 Hours Changing Gear Box Oil 1. Remove the mower from the machine, and place the mower on level ground. 2. Remove the check plug (2) or oil filler plug (1). 3.
Page 300: Check Point Of Every 150 Hours
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER Checking Mower Belt 1. Inspect the mower belt. 2. Replace the mower belt, if there is any damage found. (See page 9-S19.) W1018143 (4) Check Point of Every 150 Hours Checking Gear Box Oil See page 9-S7.
Page 301: Troubleshooting
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER 2. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Blade Does Not Mower belt broken Replace mower belt 9-S19 Rotate PTO clutch broken Repair 2-S21, S25 Blade Speed Is Slow Mower belt loosen Replace mower belt 9-S19 or tension spring...
Page 302: Servicing Specifications
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER 3. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Maximum Front Gauge Wheel Tire Pressure 343 kPa – 3.5 kgf/cm 49.7 psi Recommended Front Gauge Wheel Tire Pressure 196 kPa – 2.0 kgf/cm 28.4 psi Pinion Shaft Turning Force...
Page 303 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER 4. 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 9-S2.) Item N·m kgf·m ft-lbs Mower blade mounting screw 98.1 to 117.7 10.0 to 12.0 72.3 to 86.8...
Page 304: Checking, Disassembling And Assembling
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER 5. CHECKING, DISASSEMBLING AND ASSEMBLING [1] CHECKING AND ADJUSTING Checking Front Gauge Wheel Tire Pressure WARNING • Never exceed the tire pressure shown below (maximum limit) when attempting to seat the bead. If bead does not seat by the time the pressure reaches maximum limit, deflate the assembly reposition the tire on the rim, relubricate, and reinflate.
Page 305 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER Adjusting Cutting Height and Assist Spring (1) Front Gauge Wheel (2) Lift Rod (3) Front Roller (4) Anti-Scapl Roller (5) Adjusting Nut (6) Lift Spring Rod [S] Side discharge mower [R] Rear discharge mower W1014160 RCK72-F36 RCK72R-F36...
Page 306 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER Adjusting Height and Assist Spring (Continued) NOTE • Before adjusting the cutting height, check the tire-pressure of the front gauge wheels. 1. The cutting height can be adjusted from 25 mm to 129 mm (from 1.0 in.
Page 307 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER Adjusting Cutting Height and Assist Spring (Continued) 1. When setting the lift rod, insert the set pin as shown in the figure. (1) Lift Rod (RH) A, B, C, D :Direction where the set pin (2) Lift Rod (LH) is inserted W1020910...
Page 308: Preparation
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER [2] PREPARATION (1) Mower Tilt Up Mower Tilt Up 1. Place PTO lever in “DISENGAGE” position. 2. Stop the engine, set the parking brake. 3. Place High-Low gear shift lever in “NEUTRAL” position. 4.
Page 309: Dismounting Mower
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER Mower Tilt Up (Continued) 1. Pull up the mower deck as shown in the figure. 2. Lock the tilting pin (1) to the mower lift arm (2). (1) Tilting Pin (2) Mower Lift Arm W1021734 (2) Dismounting Mower Dismounting Mower Deck...
Page 310: Disassembling
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER [3] DISASSEMBLING Universal Joint and Covers 1. Remove the screw (1), and remove the universal joint (2). 2. Remove the left and right covers. (1) Screw (2) Universal Joint W1021193 Mower Blade and Blade Boss 1.
Page 311 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER Gear Box, Mower Belt and Center Pulley Holder 1. Turn over the mower deck. 2. Unscrew the frame mounting nuts, and remove the center frame (1). 3. Remove the tension spring (5). 4.
Page 312 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER Disassembling Gear Box 1. Unscrew the drain plug (18), and drain the gear oil. 2. Remove the center pulley (20) with a puller, and remove the feather key (21) on the bevel gear shaft (19). 3.
Page 313 F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER Side Pulley and Blade Shaft 1. Unscrew the pulley mounting nut (2) and remove the pulley (1) and feather key (3). 2. Unscrew the pulley holder mounting screws and remove the side pulley holder (6) from the mower deck.
Page 314: Servicing
F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM MOWER [4] SERVICING Checking Torque of Pinion Shaft NOTE • Do not remove the mower belt. 1. Wind a string around the pinion shaft and set a push-pull gauge to the end of the string, and then slowly pull the push-pull gauge horizontally to measure the turning force.
Page 315 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 2006. 04, S, EI, EI, e Code No.9Y011-15521 KUBOTA Corporation 2006.

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Kubota WSM F2880 Workshop Manual

General

1 Identification

2 General Precautions

3 Handling Precautions for Electrical Parts and Wiring

4 Lubricants, Fuel and Coolant

5 Tightening Torques

6 Maintenance Check List

7 Check and Maintenance

8 Special Tools

9 Tires

10 Implement Limitations

Mechanism

Servicing

Mechanism

1 Structure

2 Power Train

3 Range Gear Shift Section

4 Rear Wheel Drive Section

5 Pto Section

6 Differential Gear Section

Servicing

Servicing

1 Troubleshooting

2 Tightening Torques

3 Cehcking, Disassembling and Servicing

Servicing

Servicing

Servicing

Mechanism

Servicing

Mechanism

1 Wiring Diagram

2 Starting System

Servicing

1 Troubleshooting

2 Servicing Specifications

4 Checking, Disassembling and Servicing

Servicing

2 Troubleshooting

3 Servicing Specifications

5 Checking, Disassembling and Assembling

Quick Links

Chapters

Troubleshooting

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Questions and answers

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Summary of Contents for Kubota WSM F2880