Page 1 WORKSHOP MANUAL TRACTOR B1830,B2230,B2530,B3030 KiSC issued 05, 2012 A...
Page 2 TO THE READER This Workshop Manual tells the servicing personnel about the mechanism, servicing and maintenance of the B1830, B2230, B2530 and B3030. It contains 4 parts: "Information", "General", "Mechanism" and "Servicing". Information This section primarily contains information below. • Safety First •...
Page 3 INFORMATION KiSC issued 05, 2012 A...
Page 4: Table Of Contents
INFORMATION CONTENTS 1. SAFETY FIRST ..........................I-1 2. SAFETY DECALS .......................... I-4 [1] WITHOUT OPC ........................I-4 [2] WITH OPC..........................I-10 3. SPECIFICATIONS........................I-13 4. TRAVELING SPEEDS........................I-16 5. DIMENSIONS ..........................I-18 KiSC issued 05, 2012 A...
Page 5: Safety First
B1830,B2230,B2530,B3030, WSM INFORMATION 1. SAFETY FIRST SAFETY FIRST • This symbol, the industry's "Safety Alert Symbol", is used throughout this manual and on labels on the machine itself to warn of the possibility of personal injury. Read these instructions carefully.
Page 6 B1830,B2230,B2530,B3030, WSM INFORMATION OPERATE SAFELY • Do not use the machine after you consume alcohol or medication or when you are tired. • Put on applicable clothing and safety equipment. • Use applicable tools only. Do not use alternative tools or parts.
Page 7 B1830,B2230,B2530,B3030, WSM INFORMATION KEEP A GOOD AIRFLOW IN THE WORK AREA • If the engine is in operation, make sure that the area has good airflow. Do not operate the engine in a closed area. The exhaust gas contains poisonous carbon monoxide.
Page 8: Safety Decals
B1830,B2230,B2530,B3030, WSM INFORMATION 2. SAFETY DECALS [1] WITHOUT OPC The following safety decals (pictorial safety labels) 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 9 B1830,B2230,B2530,B3030, WSM INFORMATION 9Y1210003INI0002US0 KiSC issued 05, 2012 A...
Page 10 B1830,B2230,B2530,B3030, WSM INFORMATION 9Y1210003INI0003US0 KiSC issued 05, 2012 A...
Page 11 B1830,B2230,B2530,B3030, WSM INFORMATION 9Y1210003INI0004US0 KiSC issued 05, 2012 A...
Page 12 B1830,B2230,B2530,B3030, WSM INFORMATION CABIN Careful operation is your best insurance against an accident. Read and understand carefully this section of the separately issued operator's manual before operating the tractor. 9Y1210003INI0005US0 KiSC issued 05, 2012 A...
Page 13 B1830,B2230,B2530,B3030, WSM INFORMATION 9Y1210003INI0006US0 KiSC issued 05, 2012 A...
Page 14: With Opc
B1830,B2230,B2530,B3030, WSM INFORMATION [2] WITH OPC The following safety decals (pictorial safety labels) 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 15 B1830,B2230,B2530,B3030, WSM INFORMATION 9Y1210003INI0008US0 I-11 KiSC issued 05, 2012 A...
Page 16 B1830,B2230,B2530,B3030, WSM INFORMATION 9Y1210003INI0009US0 CARE OF PICTORIAL SAFETY LABELS 1. Keep pictorial safety labels clean and free from obstructing material. 2. Clean pictorial safety labels with soap and water, dry with a soft cloth. 3. Replace damaged or missing pictorial safety labels with new labels.
Page 17: Specifications
B1830,B2230,B2530,B3030, WSM INFORMATION 3. SPECIFICATIONS [HST Model] Model B2230 B2530 B3030 PTO power 12.5 kW (17.0 PS)* 14.0 kW (19.0 PS)* 16.9 kW (23.0 PS)* Maker KUBOTA Model D1005-E2-D21-EU D1105-E2-D21-EU V1505-E2-D21-EU Type E-TVCS, water-cooled, 4-cycle diesel Number of cylinders Bore and stroke 76 ×...
Page 18 SAE 1-3/8, 6 splines Rear Revolution 1 speed (540 min (rpm) at 2592 engine min (rpm)) PTO system PTO shaft U.S.A. No.5 (KUBOTA 10-tooth) involute spline Revolution 1 speed (2500 min (rpm) at 2600 engine min (rpm)) NOTE • * Manufacture's estimate The company reserves the right to change the specifications without notice.
Page 19 SAE 1-3/8, 6 splines Rear (rpm) at 2592 engine min (rpm)) Revolution 1 speed (540 min PTO system PTO shaft U.S.A. No.5 (KUBOTA 10-tooth) involute spline Revolution 1 speed (2500 min (rpm) at 2600 engine min (rpm)) NOTE • * Manufacture's estimate The company reserves the right to change the specifications without notice.
Page 20: Traveling Speeds
B1830,B2230,B2530,B3030, WSM INFORMATION 4. TRAVELING SPEEDS [HST Model] Model B2230 / B2530 8-16 9.5-16 9.5-18 10.5-18 31 × 13.5-15 315 /75D -15 Tire size (Rear) Farm Farm Farm Farm Turf Turf Range gear shift km/h lever (mile/h) 0 to 3.95 0 to 4.18...
Page 21 B1830,B2230,B2530,B3030, WSM INFORMATION [Manual Transmission Model] Model B1830 / B2230 / B2530 8-16 9.5-16 9.5-18 10.5-18 31 × Tire size (Rear) Farm Farm Turf Farm 13.5-15Turf /75D-15Turf Range gear km/h shift lever (mile/h) 1.00 (0.6) 1.05 (0.7) 1.13 (0.7) 1.18 (0.7) 0.98 (0.6)
Page 22: Dimensions
B1830,B2230,B2530,B3030, WSM INFORMATION 5. DIMENSIONS ROPS 9Y1210003INI0013US0 I-18 KiSC issued 05, 2012 A...
Page 23 B1830,B2230,B2530,B3030, WSM INFORMATION CABIN 9Y1210003INI0014US0 I-19 KiSC issued 05, 2012 A...
Page 24 GENERAL KiSC issued 05, 2012 A...
Page 25 GENERAL CONTENTS 1. TRACTOR IDENTIFICATION....................... G-1 2. GENERAL PRECAUTIONS......................G-2 3. HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING ......G-3 [1] WIRING ..........................G-3 [2] BATTERY ..........................G-5 [3] FUSE ............................G-5 [4] CONNECTOR ........................G-5 [5] HANDLING OF CIRCUIT TESTER ..................G-6 [6] COLOR OF WIRING ......................
Page 26: Tractor Identification
B1830,B2230,B2530,B3030, WSM GENERAL 1. TRACTOR IDENTIFICATION When contacting your local KUBOTA distributor, always specify engine serial number, tractor serial number and hour meter reading. (1) Tractor Identification Plate [A] ROPS (2) Tractor Serial Number [B] CABIN (3) Engine Serial Number...
Page 27: General Precautions
• When it is necessary to use special tools, use KUBOTA special tools. Refer to the drawings when you make special tools that you do not use frequently.
Page 28: Handling Precautions For Electrical Parts And Wiring
B1830,B2230,B2530,B3030, WSM 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 • Check electrical wiring for damage and loosened connection every year.
Page 29 B1830,B2230,B2530,B3030, WSM GENERAL • Securely insert grommet. (1) Grommet (A) Correct (B) Incorrect WSM000001GEG0066US1 • Securely clamp, being careful not to damage wiring. (1) Clamp (3) Clamp (Wind Clamp Spirally) (4) Welding Dent (2) Wire Harness WSM000001GEG0067US1 • Clamp wiring so that there is no twist, unnecessary sag, or excessive tension, except for movable part, where sag be required.
Page 30: Battery
B1830,B2230,B2530,B3030, WSM 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. • Do not install any battery with capacity other than is specified (Ah).
Page 31: Handling Of Circuit Tester
B1830,B2230,B2530,B3030, WSM GENERAL • Use sandpaper to remove rust from terminals. • Repair deformed terminal. Make certain there is no terminal being exposed or displaced. (1) Exposed Terminal (3) Sandpaper (2) Deformed Terminal (4) Rust WSM000001GEG0075US1 • Make certain that there is no female connector being too open.
Page 32: Color Of Wiring
B1830,B2230,B2530,B3030, WSM GENERAL [6] COLOR OF WIRING • Colors of wire are specified to the color codes. • This symbol of "/" shows color with stripe(s). (An example) Red stripe on white color: W/R Color of wiring Color code Black...
Page 33: Lubricants, Fuel And Coolant
3.3 Imp.qts 4.1 Imp.qts SAE 80-90 gear oil 1.5 L 1.5 L 0.40 0.40 Automobile washer Washer liquid tank – U.S.qts – U.S.qts liquid 0.33 0.33 Imp.qts Imp.qts NOTE • * KUBOTA original transmission hydraulic fluid. KiSC issued 05, 2012 A...
Page 34 B1830,B2230,B2530,B3030, WSM GENERAL Greasing Type of Place No. of greasing point Capacity grease Top link Until Multipurpo Lift rod [R.H.] grease se grease overflows NLG1-2 or Speed control pedal 1 [HST Type] NLG1-1 Moderate (GC-LB) battery terminal amount 9Y1210003GEG0002US0 KiSC issued 05, 2012 A...
Page 35: Tightening Torques
B1830,B2230,B2530,B3030, WSM 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 bolt...
Page 36: Maintenance Check List
B1830,B2230,B2530,B3030, WSM GENERAL 6. MAINTENANCE CHECK LIST Service Interval Refer- After Impor- Item ence since tant 50 100 150 200 250 300 350 400 450 500 550 600 650 page Clogging of air conditioner Clean Daily G-13 condenser screen every...
Page 37 • *4: When the battery is used for less than 100 hours per year, check the battery condition by reading the indication annually. • 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 38: Check And Maintenance
B1830,B2230,B2530,B3030, WSM GENERAL 7. CHECK AND MAINTENANCE CAUTION • Be sure to check and service the tractor on a flat place with engine shut off, the parking brake on and chock the wheels. 9Y1210003GEG0004US0 [1] DAILY CHECK To prevent trouble from occurring, it is important to know the condition of the tractor. Check the following items before starting.
Page 39: Check Points Of Initial 50 Hours
Then, replenish the engine oil up to the specified level. IMPORTANT • To prevent serious damage to the engine, replacement filter must be highly efficient. Use only a KUBOTA genuine filter or its equivalent. (1) Engine Oil Filter Cartridge...
Page 40 Check the fluid level. IMPORTANT • To prevent serious damage to the hydraulic system. Use only a genuine KUBOTA filter or its equivalents. (1) Hydraulic Oil Filter Cartridge (2) Hydraulic Oil Filter Cartridge (for HST)
Page 41 • Never work the tractor immediately after changing the transmission oil. Keeping the engine at medium speed for a few minutes to prevents damage to the transmission. • Do not mix different brands oil together. B1830, B2230, B2530 15 L Manual transmission 4.0 U.S.gals (without Bi-Speed 3.3 Imp.gals...
Page 42 B1830,B2230,B2530,B3030, WSM GENERAL Adjusting Clutch Pedal Free Travel 1. Stop the engine and remove the key. 2. Slightly depress the clutch pedal and measure free travel at the top of pedal stroke. 3. If adjustment is needed, loosen the lock nut (2) and turn the clutch rod (1) to adjust the rod length within acceptable limits.
Page 43: Check Points Of Every 50 Hours
B1830,B2230,B2530,B3030, WSM GENERAL [3] CHECK POINTS OF EVERY 50 HOURS Checking Engine Start System (HST Model) (without OPC) CAUTION • Do not allow anyone near the tractor while testing. • If the tractor does not pass the test, do not operate the tractor.
Page 44 B1830,B2230,B2530,B3030, WSM GENERAL Checking Engine Start System (Manual Transmission Model) (with OPC) CAUTION To avoid personal injury: • Do not allow anyone near the tractor while testing. • If the tractor does not pass the test do not operate the tractor.
Page 45 B1830,B2230,B2530,B3030, WSM GENERAL Checking Engine Start System (HST Model) (with OPC) CAUTION To avoid personal injury: • Do not allow anyone near the tractor while testing. • If the tractor does not pass the test do not operate the tractor.
Page 46 B1830,B2230,B2530,B3030, WSM GENERAL Greasing 1. Apply a small amount of multipurpose grease to the positions as shown in the figures. (1) Speed Control Pedal (HST Pedal) B3030HD (Serial No. 90000 and (2) Top Link below), B2530HD (Serial No. (3) Lifting Rod (RH)
Page 47 B1830,B2230,B2530,B3030, WSM GENERAL Checking Wheel Mounting Bolts and Nuts Tightening Torques CAUTION • Never operate tractor with a loose rim, wheel, or axle. • Any time bolts and nuts are loosened, retighten to specified torque. • Check all bolts and nuts frequently and keep them tight.
Page 48: Check Points Of Every 100 Hours
• Never mix two different types of oil. • Use the proper SAE Engine Oil according to ambient temperatures. • Refer to "4. LUBRICANTS, FUEL AND COOLANT" on page G-8. 3.0 L B1830, B2230, B2530 3.2 U.S.qts 2.6 lmp.qts Engine oil capacity 4.1 L B3030 4.3 U.S.qts...
Page 49 B1830,B2230,B2530,B3030, WSM GENERAL Checking Battery Condition CAUTION • Do not use or charge the refillable type battery if the fluid level is below the LOWER (lower limit level) mark. Otherwise, the battery component parts may prematurely deteriorate, which may shorten the battery's service life or cause an explosion.
Page 50 B1830,B2230,B2530,B3030, WSM GENERAL (Continued) CAUTION • When the battery is being activated, hydrogen and oxygen gases in the battery are extremely explosive. Keep open sparks and flames away from the battery at all times, especially when charging the battery. • When charging the battery, ensure the vent caps are securely in place.
Page 51 B1830,B2230,B2530,B3030, WSM GENERAL Cleaning Air Cleaner Primary Element 1. Remove the air cleaner cover (3) and element (primary) (5) or (2). 2. Clean the element (primary) (2): • When dry dust adheres to the element, blow compressed air from the inside, turning the element. Pressure of compressed air must be under 205 kPa (2.1 kgf/cm...
Page 52 B1830,B2230,B2530,B3030, WSM GENERAL Cleaning Fuel Filter Element This job should not be done in the field, but in a clean place. 1. Place the oil pan underneath the fuel filter. Loosen and remove the filter bowl, and rinse the inside with kerosene.
Page 53 B1830,B2230,B2530,B3030, WSM GENERAL Adjusting Brake Pedal Free Travel CAUTION • Stop the engine and chock the wheels before checking brake pedal. 1. Release the parking brake. 2. Slightly depress the brake pedals and measure free travel at the top of pedal stroke.
Page 54 B1830,B2230,B2530,B3030, WSM GENERAL Checking Parking Brake Lever Travel 1. Pull the parking brake lever (1) to the parking position while counting the ratchet sound made by the parking brake lever (1). 2. If the counted ratchet sound is not within the factory specification, adjust the parking brake lever travel.
Page 55: Check Points Of Every 200 Hours
Then, replenish the engine oil up to the specified level. IMPORTANT • To prevent serious damage to the engine, replacement filter must be highly efficient. Use only a KUBOTA genuine filter or its equivalent. (1) Engine Oil Filter Cartridge...
Page 56 B1830,B2230,B2530,B3030, WSM GENERAL Checking Radiator Hoses and Clamp Check to see if radiator hoses (1) are properly fixed every 200 hours of operation or six months, whichever comes first. 1. If clamp bands (2) are loose or water leaks, tighten clamp bands (2) securely.
Page 57 B1830,B2230,B2530,B3030, WSM GENERAL Adjusting Air Conditioner Belt Tension (CABIN) CAUTION • Apply the parking brake and stop the engine and remove the key. 1. Measure the deflection A, depressing the air conditioner belt halfway between the fan belt drive pulley and the air conditioner tension pulley at specified force (98 N, 10 kgf, 22 lbf).
Page 58 B1830,B2230,B2530,B3030, WSM GENERAL Checking the Air Conditioner Condenser (CABIN) 1. Check air conditioner condenser (1) to be sure that it is clean of debris. (1) Air Conditioner Condenser 9Y1210003GEG0035US0 G-33 KiSC issued 05, 2012 A...
Page 59: Check Points Of Every 300 Hours
• Never work the tractor immediately after changing the transmission oil. Keeping the engine at medium speed for a few minutes to prevents damage to the transmission. • Do not mix different brands oil together. B1830, B2230, B2530 15 L Manual transmission 4.0 U.S.gals (without Bi-Speed 3.3 Imp.gals...
Page 60 Check the fluid level. IMPORTANT • To prevent serious damage to the hydraulic system. Use only a genuine KUBOTA filter or its equivalents. (1) Air Conditioner Condenser (2) Hydraulic Oil Filter Cartridge 9Y1210003GEG0037US0 Changing Front Axle Case Oil 1.
Page 61: Check Points Of Every 400 Hours
B1830,B2230,B2530,B3030, WSM GENERAL [7] CHECK POINTS OF EVERY 400 HOURS Adjusting Front Axle Pivot (Front Axle Rocking Force) 1. Jack up the front side of tractor. 2. Set a spring balance to the front axle flange. 3. Measure the front axle rocking force.
Page 62 IMPORTANT • To prevent serious damage to the fuel system, use only a KUBOTA genuine fuel filter element. • When the fuel filter bowl has been removed, fuel stops flowing from the fuel tank. If the fuel tank is almost full, however, the fuel will flow back from the fuel return pipe to the fuel filter.
Page 63: Check Point Of Every 800 Hours
B1830,B2230,B2530,B3030, WSM GENERAL [8] CHECK POINT OF EVERY 800 HOURS Valve Clearance 1 (ROPS Model) IMPORTANT • Valve clearance must be checked and adjusted when engine is cold. 1. Remove the head cover, the glow plugs and the timing window cover on the clutch housing.
Page 64: Check Points Of Every 1500 Hours
B1830,B2230,B2530,B3030, WSM GENERAL Valve Clearance 2 (CABIN Model) IMPORTANT • Valve clearance must be checked and adjusted when engine is cold. 1. Remove the head cover and the glow plugs. 2. Check and adjust the valve clearance at the both valves compression top dead center.
Page 65: Check Points Of Every 1 Year
IMPORTANT • To prevent serious damage to the air intake system, use only a KUBOTA genuine air element. • The air cleaner uses a dry element, never apply oil. • Do not run the engine with filter element removed.
Page 66 B1830,B2230,B2530,B3030, WSM GENERAL Checking the Air Conditioner Pipe and Hose (CABIN) 1. Check to see that all lines and hose clamps are tight and not damaged. 2. If pipes, hoses and clamps are found worn and damaged, replace them. (1) Pipe...
Page 67: Check Points Of Every 2 Years
B1830,B2230,B2530,B3030, WSM GENERAL [11] CHECK POINTS OF EVERY 2 YEARS Replacing Radiator Hose and Clamp Band 1. Replace the radiator hoses (1) and tighten the clamp bands (2) securely if the radiator hoses (1) are swollen, hardened or cracked. (1) Radiator Hose...
Page 68 B1830,B2230,B2530,B3030, WSM GENERAL Flushing Cooling System and Changing Coolant CAUTION • Do not remove radiator cap while coolant is hot. When cool, slowly rotate cap to the first stop and allow sufficient time for excess pressure to escape before removing the cap completely.
Page 69 B1830,B2230,B2530,B3030, WSM GENERAL Anti-Freeze CAUTION • When using antifreeze, put on some protection such as rubber gloves (Anti-freeze contains poison). • If should drink anti-freeze, throw up at once and take medical attention. • When anti-freeze comes in contact with the skin or clothing, wash it off immediately.
Page 70 The LLC contains anticorrosive agent. If mixed with the cleaning agent, sludge may build up, adversely affecting the engine parts. 7. Kubota's genuine long-life coolant has a service life of 2 years. Be sure to change the coolant every 2 years. NOTE •...
Page 71: Others
B1830,B2230,B2530,B3030, WSM GENERAL [12] OTHERS Bleeding Fuel Air must be removed: 1. When the fuel filter or lines are removed. 2. When tank is completely empty. 3. After the tractor has not been used for a long period of time.
Page 72 B1830,B2230,B2530,B3030, WSM GENERAL Replacing Fuse (ROPS) (without OPC) 1. The tractor electrical system is protected from potential damage by fuses. A blown fuse indicates that there is an overload or short somewhere in the electrical system. 2. If any of the fuses should blow, replace with a new one of the same capacity.
Page 73 B1830,B2230,B2530,B3030, WSM GENERAL Replacing Fuse (ROPS) (with OPC) 1. The tractor electrical system is protected from potential damage by fuses. A blown fuse indicates that there is an overload or short somewhere in the electrical system. 2. If any of the fuses should blow, replace with a new one of the same capacity.
Page 74 B1830,B2230,B2530,B3030, WSM GENERAL Replacing Fuse (CABIN) (without OPC) 1. The tractor electrical system is protected from potential damage by fuses. A blown fuse indicates that there is an overload or short somewhere in the electrical system. 2. If any of the fuses should blow, replace with a new one of the same capacity.
Page 75 B1830,B2230,B2530,B3030, WSM GENERAL Replacing Fuse (CABIN) (with OPC) 1. The tractor electrical system is protected from potential damage by fuses. A blown fuse indicates that there is an overload or short somewhere in the electrical system. 2. If any of the fuses should blow, replace with a new one of the same capacity.
Page 76 B1830,B2230,B2530,B3030, WSM GENERAL Replacing Light Bulb (ROPS) 1. Head Light: Take the bulb out of the light body and replace with new one. 2. Other lights: Detach the lens and replace the bulb. Light Capacity Head lights 40 W / 45 W...
Page 77 B1830,B2230,B2530,B3030, WSM GENERAL Replacing Light Bulb (CABIN) 1. Head Light: Take the bulb out of the light body and replace with new one. 2. Other lights: Detach the lens and replace the bulb. Light Capacity Head lights 40 W / 45 W...
Page 78 B1830,B2230,B2530,B3030, WSM GENERAL Checking Refrigerant (Gas) (CABIN) CAUTION • Liquid contact with eyes or skin may cause frostbite. • In the event of a leakage, wear safety goggles. Escaping refrigerant can cause severe injuries to eyes. • In contact with a flame, R134a refrigerant gives a toxic gas.
Page 79: Special Tools
B1830,B2230,B2530,B3030, WSM 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. WSM000001GEG0011US0 Piston Ring Compressor Code No. • 07909-32111 Application •...
Page 80 B1830,B2230,B2530,B3030, WSM GENERAL Oil Pressure Tester Code No. • 07916-32032 Application • Use to measure lubricating oil pressure. (1) Gauge (5) Adaptor 2 (2) Cable (6) Adaptor 3 (3) Threaded Joint (7) Adaptor 4 (4) Adaptor 1 (8) Adaptor 5...
Page 81 B1830,B2230,B2530,B3030, WSM GENERAL Plastigauge Code No. • 07909-30241 Application • Use to check the oil clearance between crankshaft and bearing, etc.. Measuring range • Green: 0.03 to 0.07 mm (0.001 to 0.003 in.) • Red: 0.05 to 0.1 mm (0.002 to 0.006 in.) •...
Page 82 B1830,B2230,B2530,B3030, WSM GENERAL Injection Pump Pressure Tester Application • Use to check fuel tightness of injection pumps. NOTE • The following special tools are not provided, so make them referring to the figure. Pressure gauge full scale: More than 29.4 MPa...
Page 83 B1830,B2230,B2530,B3030, WSM GENERAL Crankshaft Bearing 1 Replacing Tool Application • Use to press out and press fit the crankshaft bearing 1. NOTE • The following special tools are not provided, so make them referring to the figure. [Extracting tool] 135 mm (5.31 in.) 72 mm (2.8 in.)
Page 84 B1830,B2230,B2530,B3030, WSM GENERAL Socket Application • Use to loosen and tighten the idle gear 2 bearing lock nut. NOTE • The following special tools are not provided, so make them referring to the figure. 28.5 to 28.8 mm (1.12 to 1.13 in.) 3.5 to 3.7 mm (0.14 to 0.15 in.)
Page 85: Special Tools For Tractor
B1830,B2230,B2530,B3030, WSM GENERAL [2] SPECIAL TOOLS FOR TRACTOR Tie-rod End Lifter Code No. • 07909-39051 Application • Use for removing the tie-rod end with ease. WSM000001GEG0029US0 Toe-in Gauge Code No. • 07909-31681 Application • This allows easy measurement of toe-in for all machine models.
Page 86 B1830,B2230,B2530,B3030, WSM GENERAL PTO Shift Arm Ball Guide Application • Use for compressing the ball and spring into the transmission case. 0.51 rad (30 °) 29.95 to 29.98 mm dia. (1.179 to 1.180 in. dia.) 35 mm (1.38 in.) 20 mm (0.79 in.) Chamfer 1 mm (0.039 in.)
Page 87 B1830,B2230,B2530,B3030, WSM GENERAL Check and High Pressure Relief Valve Assembly Tool Application • Use for Readjusting relief valve pressure. 30.0 mm (1.18 in.) Chamfer 0.4 mm (0.12 in.) 1.05 rad (60.0 °) 21.0 mm (0.827 in.) Chamfer 3.0 mm (0.12 in.) Chamfer 0.3 mm (0.01 in.)
Page 88: Special Tools For Cabin
B1830,B2230,B2530,B3030, WSM GENERAL [3] SPECIAL TOOLS FOR CABIN NOTE • Special tools for R134a refrigerant air conditioning system introduced below are available from DENSO CO.LTD.. 9Y1210003GEG0071US0 Air Conditioner Service Tool Code No. • DENSO 95048-00063 Application • Use for charging, testing or discharging the air conditioning system.
Page 89 B1830,B2230,B2530,B3030, WSM GENERAL Adaptor (For R134a) Code No. • DENSO 95048-10190 (AC220V) • DENSO 95048-10200 (AC240V) Application • Use for evacuating the air conditioning system. WSM000001GEG0045US0 Stopper Magnet Clutch (For A/C Compressor) Application • Use for loosen and tighten the magnet clutch mounting nut.
Page 90 B1830,B2230,B2530,B3030, WSM GENERAL Remover Magnet Clutch (for A/C Compressor) Application • Use to remove the hub plate or center piece. NOTE • This special tool is not provided, so make it referring to the figure. 12 mm (0.47 in.) 55 mm (2.16 in.) 20 mm (0.79 in.)
Page 91: Tires
Though the tire pressure is factory-set to the prescribed level, it naturally drops slowly in the course of time. Thus, check it everyday and inflate as necessary. [B1830, B2230, B2530] Tire sizes Inflation Pressure 8-16, 4PR 160 kPa (1.6 kgf/cm...
Page 92: Tread
B1830,B2230,B2530,B3030, WSM GENERAL [2] TREAD CAUTION • Support tractor securely on stands before removing a wheel. • Never operate tractor with a loose rim, wheel or axle. IMPORTANT • Always attach tires as shown in the figure. • If not attached as the figure, transmission parts may be damaged.
Page 93: Front Wheels
Front wheel tread can not be adjusted. IMPORTANT • Do not turn front discs to obtain wider tread. In setting up the front wheels, make sure that the inflation valve stem of the tires face outward. [B1830, B2230 and B2530] Models B1830 B2230...
Page 94: Rear Wheels
1. Loosen the nut of cotter pin bolt. 2. Remove the snap pin and wheel hub pin. 3. Change the tread to the desired position. 4. Re-set the wheel hub pin, snap pin and cotter pin bolt. [B1830, B2230 and B2530] Models B1830 B2230...
Page 95 B1830,B2230,B2530,B3030, WSM GENERAL IMPORTANT • Always attach tires as shown in the drawings. • If not attached as illustrated, transmission parts may be damaged. • When re-fitting or adjusting a wheel, tighten the bolts to the following torques the recheck after driving the tractor 200 m 200 yards) and thereafter according to service interval.
Page 96: Tire Liquid Injection And Ballast
B1830,B2230,B2530,B3030, WSM GENERAL [3] TIRE LIQUID INJECTION AND BALLAST Auxiliary weights can be used to increase traction force for plowing in fields or clayey ground. Another way is to inject water or another liquid, such as a calcium chloride solution in the tires. Water must not be used in winter since it freezes at 0 °C (32 °F).
Page 97 B1830,B2230,B2530,B3030, WSM GENERAL Injection and Rear Ballast CAUTION • When a calcium chloride solution is used, cool it before pouring it into the tire. • Do not fill tires with water or solution more than 75 % of full capacity (to the valve stem level).
Page 98 B1830,B2230,B2530,B3030, WSM GENERAL Front Ballast Add weights in needed for stability and improving traction. Heavy pulling and heavy rear mounted implements tend to lift front wheels. Add enough ballast to maintain steering control and prevent tip over. Remove weight when no longer needed.
Page 99: Implement Limitations
KUBOTA. Use with 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 Tractor may result in malfunctions or failures of the tractor, damage to other property and injury to the operator or others. [Any malfunctions or failures of the tractor resulting from use with improper implements are not covered by the warranty.]...
Page 100 ENGINE KiSC issued 05, 2012 A...
Page 101 SERVICING CONTENTS 1. TROUBLESHOOTING.........................1-S1 2. SERVICING SPECIFICATIONS ....................1-S4 3. TIGHTENING TORQUES......................1-S10 [1] TRACTOR SECTION ......................1-S10 [2] ENGINE SECTION ......................1-S11 4. CHECKING, DISASSEMBLING AND SERVICING ..............1-S12 [1] CHECKING AND ADJUSTING....................1-S12 (1) Engine Body ........................1-S12 (2) Lubricating System ......................1-S14 (3) Cooling System ......................1-S15 (4) Fuel System........................1-S17 [2] PREPARATION ........................1-S20 (1) Draining Lubricants and Coolant ...................1-S20...
Page 102: Troubleshooting
B1830,B2230,B2530,B3030, WSM ENGINE 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Engine Does Not No fuel Replenish fuel Start Air in the fuel system Bleed G-46 Water in the fuel system Change fuel and – repair or replace fuel system...
Page 103 B1830,B2230,B2530,B3030, WSM ENGINE Reference Symptom Probable Cause Solution Page Either White or Blue Excessive engine oil Reduce to specified G-14 Exhaust Gas Is level Observed Piston ring and cylinder worn or stuck Repair or replace 1-S48, 1-S65 Incorrect injection timing...
Page 104 B1830,B2230,B2530,B3030, WSM ENGINE Reference Symptom Probable Cause Solution Page Low Oil Pressure Engine oil insufficient Replenish G-23 Oil strainer clogged Clean 1-S46 Oil filter cartridge clogged Replace G-14 Relief valve stuck with dirt Clean – Relief valve spring weaken or broken Replace –...
Page 105: Servicing Specifications
B1830,B2230,B2530,B3030, WSM ENGINE 2. SERVICING SPECIFICATIONS ENGINE BODY Item Factory Specification Allowable Limit Valve Clearance (Cold) 0.145 to 0.185 mm – 0.0057 to 0.0073 in. 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 •...
Page 106 B1830,B2230,B2530,B3030, WSM ENGINE 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 – 0.4714 to 0.4718 in.
Page 107 B1830,B2230,B2530,B3030, WSM ENGINE Item Factory Specification Allowable Limit Camshaft Side Clearance 0.07 to 0.22 mm 0.30 mm 0.0028 to 0.0087 in. 0.0118 in. Alignment – 0.01 mm 0.0004 in. Cam Height Intake 28.80 mm 28.75 mm 1.1339 in. 1.1319 in.
Page 108 B1830,B2230,B2530,B3030, WSM ENGINE Item Factory Specification Allowable Limit Piston Ring to Piston Ring Groove • Second Ring Clearance 0.085 to 0.112 mm 0.2 mm 0.0033 to 0.0044 in. 0.0079 in. • Oil Ring Clearance 0.020 to 0.055 mm 0.15 mm 0.0008 to 0.0021 in.
Page 109 B1830,B2230,B2530,B3030, WSM ENGINE Item Factory Specification Allowable Limit Cylinder Liner I.D. (Oversized) D905-E2 72.500 to 72.519 mm 72.65 mm 2.85433 to 2.85507 in. 2.8602 in. D1005-E2 76.500 to 76.519 mm 76.65 mm 3.0118 to 3.0126 in. 3.0177 in. D1105-E2B 78.500 to 78.519 mm 78.65 mm...
Page 110 B1830,B2230,B2530,B3030, WSM ENGINE FUEL SYSTEM Item Factory Specification Allowable Limit Injection Pump Injection Timing 0.27 to 0.31 rad – (16 to 18 °) before T.D.C. Pump Element Fuel Tightness – 13.73 MPa 140 kgf/cm 1991 psi Delivery Valve Fuel Tightness...
Page 111: Tightening Torques
B1830,B2230,B2530,B3030, WSM ENGINE 3. TIGHTENING TORQUES Tightening torque of screws, bolts and nuts on the table below are specially specified. (For general use screws, bolts and nuts: See page "5. TIGHTENING TORQUES" on page G-10.) NOTE • In removing and applying the bolts and nuts marked with "*", a pneumatic wrench or similar pneumatic tool, if employed, must be used with enough care not to get them seized.
Page 112: Engine Section
B1830,B2230,B2530,B3030, WSM ENGINE [2] ENGINE SECTION Item Size × Pitch N·m kgf·m lbf·ft Oil pressure switch – 14.7 to 19.6 1.5 to 2.0 10.8 to 14.5 Nozzle holder – 34.3 to 39.2 3.5 to 4.0 25.3 to 28.9 Overflow pipe nut –...
Page 113: Checking, Disassembling And Servicing
B1830,B2230,B2530,B3030, 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 114 B1830,B2230,B2530,B3030, WSM ENGINE Valve Clearance 1 (ROPS Model) IMPORTANT • Valve clearance must be checked and adjusted when engine is cold. 1. Remove the head cover, the glow plugs and the timing window cover on the clutch housing. 2. Align the "1TC" mark line on the flywheel and center of timing window so that the No.
Page 115: Lubricating System
B1830,B2230,B2530,B3030, WSM ENGINE Valve Clearance 2 (CABIN Model) IMPORTANT • Valve clearance must be checked and adjusted when engine is cold. 1. Remove the head cover and the glow plugs. 2. Check and adjust the valve clearance at the both valves compression top dead center.
Page 116: Cooling System
B1830,B2230,B2530,B3030, WSM ENGINE (3) Cooling System 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 lbf). 2. If the measurement is not within the factory specifications, loosen the alternator mounting screws and relocate the alternator to adjust.
Page 117 B1830,B2230,B2530,B3030, WSM ENGINE CAUTION • When removing the radiator cap, wait at least ten minutes after the engine has stopped and cooled down. Otherwise, hot water may gush out, scalding nearby people. 9Y1210003ENS0013US0 Radiator Cap Air Leakage 1. Set a radiator tester (1) and adaptor (2) on the radiator cap.
Page 118: Fuel System
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 119 12.75 MPa (from 140 to 130 kgf/cm , from 1991 to 1849 psi). 9. If the measurement is less than allowable limit, replace the pump with new one or repair with a Kubota-authorized pump service shop. 10 seconds 13.73 → 12.75 MPa Factory specification 140 →...
Page 120 B1830,B2230,B2530,B3030, WSM ENGINE Fuel Injection Pressure 1. Set the injection nozzle to a nozzle tester. 2. Slowly move the tester handle to measure the pressure at which fuel begins jetting out from the nozzle. 3. If the measurement is not within the factory specifications, replace the adjusting washer (1) in the nozzle holder to adjust it.
Page 121: Preparation
• Never mix two different types of oil. • Use the proper SAE Engine Oil according to ambient temperatures. • Refer to "4. LUBRICANTS, FUEL AND COOLANT" on page G-8. 3.0 L B1830, B2230, B2530 3.2 U.S.qts 2.6 lmp.qts Engine oil capacity 4.1 L B3030 4.3 U.S.qts...
Page 122 4. After draining the transmission fluid, reinstall the drain plugs (1), (3), (5). IMPORTANT • Use only KUBOTA UDT oil. Use of other oils may damage the transmission or hydraulic system. Refer to "4. LUBRICANTS, FUEL AND COOLANT" on page G-8.
Page 123 B1830,B2230,B2530,B3030, WSM ENGINE Draining Coolant CAUTION • Do not remove radiator cap while coolant is hot. When cool, slowly rotate cap to the first stop and allow sufficient time for excess pressure to escape before removing the cap completely. 1. Stop the engine, remove the key and let it cool down.
Page 124: Separating Cabin From Tractor Body (Cabin)
B1830,B2230,B2530,B3030, WSM ENGINE (2) Separating Cabin from Tractor Body (CABIN) Discharging R134a Refrigerant Prepare for the R134a refrigerant recovery and recycling machine. 1. Connect low pressure side hose (blue) from the recovery and recycling machine to LO pressure side charging valve (1) on the compressor (3).
Page 125 B1830,B2230,B2530,B3030, WSM ENGINE Removing Receiver, Condenser and Refrigerant Hoses 1. Disconnect the high pressure pipe (3) and the low pressure pipe (2) from the compressor. 2. After removing the battery, disconnect the connector from the receiver pressure switch. Remove the bolts (8) and the receiver (10).
Page 126 B1830,B2230,B2530,B3030, WSM ENGINE Disconnecting Water Hoses 1. Loosen the water drain cock (1). 2. Drain the coolant. 3. Remove the hose clamps (3). Disconnect the water hoses (2) from the engine. (When reassembling) • Fill the coolant to the specified capacity.
Page 127 B1830,B2230,B2530,B3030, WSM ENGINE Removing HST Pedal, Floor Mat and Seat Front Cover 1. Remove the bolts (2) and the HST pedal (1). 2. Remove the grip (4). Remove the differential lock pin at the right side rear axle shaft. 3. Remove the bolts (6) and the seat front cover (5) from the fenders and the steps.
Page 128 B1830,B2230,B2530,B3030, WSM ENGINE Removing Cover, Step and Stopper 1. Remove the bolts (3). 2. Remove the cover (1). 3. Remove the bolts and the step (2). 4. Remove the bolt and the stopper (5). 5. Remove the cabin mounting bolts and the nuts.
Page 129 B1830,B2230,B2530,B3030, WSM ENGINE Disconnecting Wiring Harness and Removing Cabin Mounting Bolts 1. After removing the seat, remove the bolts (2) and the rear fender cover (1). 2. Remove the bolts (3) from the cabin frame. 3. Disconnect the connector from the window washer tank (4).
Page 130 B1830,B2230,B2530,B3030, WSM ENGINE Dismounting Cabin 1. Hook the cabin with the nylon slings not to damage the other roof. 2. Dismount the cabin from the tractor body. 3. Support the cabin with the rigid jacks. (When reassembling) • If the beam shield (1) is damaged, replace it with a new one.
Page 131: Separating Engine And Front Case From Tractor
4. After draining the transmission fluid, reinstall the drain plugs (1), (3), (5). IMPORTANT • Use only KUBOTA UDT oil. Use of other oils may damage the transmission or hydraulic system. Refer to "4. LUBRICANTS, FUEL AND COOLANT" on page G-8.
Page 132 B1830,B2230,B2530,B3030, WSM ENGINE Bonnet, Front Grille, Side Covers and ROPS 1. Open the bonnet. 2. Remove the pin (3) and the plain washer (2). 3. Remove the wiring harness from the bonnet. 4. Remove the hood. 5. Remove the front grille and the side covers.
Page 133 B1830,B2230,B2530,B3030, WSM ENGINE Oil Cooler and Battery Stay (HST) 1. Remove the oil cooler pipe plate spring (3). 2. Remove the clamp (4). 3. Remove the battery stay (2). NOTE • Don't damage the O-ring (5). • Don't damage the oil cooler pipe and delivery pipes.
Page 134 B1830,B2230,B2530,B3030, WSM ENGINE Fuel 1. Disconnect the fuel hose (1) from the fuel filter (2). 2. Drain the fuel to the fuel tank completely. (1) Fuel Hose (from Fuel Tank) (2) Fuel Filter 9Y1210003ENS0043US0 HST Pedal and Floor Mat 1. Remove the HST pedal mounting bolts (2).
Page 135 B1830,B2230,B2530,B3030, WSM ENGINE Steering Wheel, Meter Panel, Shuttle Lever and Panel Lower Cover 1. Remove the steering wheel cap. 2. Remove the steering wheel mounting nut. 3. Remove the steering wheel with a steering wheel puller (Code No. 07916-51090). 4. Remove the accelerator lever grip (3) and the steering boot (2).
Page 136 B1830,B2230,B2530,B3030, WSM ENGINE Fuel Tank 1. Disconnect the leads (1) from the fuel tank (2). 2. Disconnect the overflow hoses from the fuel tank (2). 3. Remove the shutter plate (6) and the fuel tank (2). (1) Lead (4) Bolt...
Page 137 B1830,B2230,B2530,B3030, WSM ENGINE Key Stop Solenoid and Hydraulic Delivery Pipe 1. Remove the key stop solenoid connector. 2. Remove the engine stop solenoid (9) using a small size rachet handle (1), the extension joint (2), the universal joint (3) and the thinner socket (10 mm).
Page 138 B1830,B2230,B2530,B3030, WSM ENGINE Steps (4-cylinder Engine, ROPS Model) 1. Remove the bolts (1) and the nut (4). 2. Remove the brake spring from the step (R.H.) (2). Remove the brake spring and the clutch spring from the step (L.H.) (3).
Page 139 B1830,B2230,B2530,B3030, WSM ENGINE Separating Engine with Front Axle 1. Reinstall the rear tires. 2. Support the transmission with a disassembling stand. 3. Hook the engine with a hoist. 4. Place the disassembling stand under the main frame. 5. Disconnect the power steering hoses (2).
Page 140: Disassembling And Assembling
B1830,B2230,B2530,B3030, WSM ENGINE [3] DISASSEMBLING AND ASSEMBLING (1) External Components Fan, Water Hose, Fan Belt, Alternator, Muffler, Meter Cable, Air Cleaner, Air Cleaner Bracket, Inlet Hose, Air Conditioner, Compressor and etc. 1. Remove the external components as shown in the picture.
Page 141: Cylinder Head And Valve And Oil Pan
B1830,B2230,B2530,B3030, WSM ENGINE (2) Cylinder Head and Valve and Oil Pan Cylinder Head Cover 1. Disconnect the breather hose (1). 2. Remove the head cover nut (2). 3. Remove the cylinder head cover (3). (When reassembling) • Check to see if the cylinder head cover gasket is not defective.
Page 142 B1830,B2230,B2530,B3030, 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 putting the push rods (2) onto the tappets (3), check to see if their ends are properly engaged with the dimples.
Page 143: Gear Case
B1830,B2230,B2530,B3030, WSM ENGINE Tappets 1. Remove the tappets (1) from the crankcase. (When reassembling) • Visually check the contact between tappets and cams for proper rotation. If defect is found, replace tappets. • Before installing the tappets, apply engine oil thinly around them.
Page 144 B1830,B2230,B2530,B3030, WSM ENGINE Gear Case 1. Remove the gear case (1). (When reassembling) • Grease thinly to the oil seal, and install it, ensuring the lip does not come off. • Measure the length "L" when the gear case mounting bolt is...
Page 145 B1830,B2230,B2530,B3030, WSM ENGINE Injection Pump 1. Disconnect the starter 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. Remove the injection pump shims.
Page 146 B1830,B2230,B2530,B3030, WSM ENGINE Cam Gear, Idle Gear 1, 2 and Governor Gear 1. Remove the external snap ring (9), and then remove the idle gear 1 (10). 2. Remove the lock nut (1), and then remove the bearing nut (2) with a bearing nut finger socket (11).
Page 147: Piston And Connecting Rod
B1830,B2230,B2530,B3030, WSM ENGINE Oil Pan and Oil Strainer 1. Remove the oil pan mounting screws (5). 2. Remove the oil pan (4). 3. Remove the oil strainer (3). (When reassembling) • After cleaning the oil strainer, check to see that the filter mesh is clean, and install it.
Page 148 B1830,B2230,B2530,B3030, WSM ENGINE Piston 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 grip of a hammer. 3. Draw out the other piston in the same method as above.
Page 149 B1830,B2230,B2530,B3030, 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) • Install the rings so that the manufacturer's mark (12) near the gap faces the top of the piston.
Page 150: Crankshaft
B1830,B2230,B2530,B3030, 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) • Apply engine oil to the threads and the undercut surface of the flywheel screw and fit the screw.
Page 151 B1830,B2230,B2530,B3030, 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.).
Page 152: Servicing
B1830,B2230,B2530,B3030, 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.
Page 153 B1830,B2230,B2530,B3030, 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). Leave it five to ten minutes after spraying.
Page 154 B1830,B2230,B2530,B3030, 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 155 B1830,B2230,B2530,B3030, WSM ENGINE Correcting Valve and Valve Seat NOTE • Before correcting the valve and the 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 156 B1830,B2230,B2530,B3030, 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 157: Idle Gear And Camshaft
B1830,B2230,B2530,B3030, 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 158 B1830,B2230,B2530,B3030, WSM ENGINE Idle Gear 1 and 2 Side Clearance 1. Set a dial indicator with its tip on the idle gear. 2. Measure the side clearance by moving the idle gear to the front and rear. 3. If the measurement exceeds the allowable limit, replace the idle gear collar.
Page 159: Piston And Connecting Rod
B1830,B2230,B2530,B3030, WSM ENGINE Oil Clearance of Camshaft Journal 1. Measure the camshaft journal O.D. with an outside micrometer. 2. Measure the cylinder block bore I.D. for camshaft with a cylinder gauge, and calculate the oil clearance. 3. If the oil clearance exceeds the allowable limit, replace the camshaft.
Page 160 B1830,B2230,B2530,B3030, WSM ENGINE Oil Clearance between Piston Pin and Small End Bushing 1. Measure the piston pin O.D. where it contacts the bushing with an outside micrometer. 2. Measure the small end bushing I.D. with an inside micrometer, and calculate the oil clearance.
Page 161 B1830,B2230,B2530,B3030, WSM ENGINE Piston Ring Gap 1. Insert the piston ring into the lower part of the cylinder (the least worn out part) with a piston. 2. Measure the ring gap with a thickness gauge. 3. If the measurement exceeds the allowable limit, replace the piston ring.
Page 162: Crankshaft
B1830,B2230,B2530,B3030, WSM ENGINE Connecting Rod Alignment 1. Remove the crankpin bearing, and install the connecting rod cap. 2. Install the piston pin in the connecting rod. 3. Install the connecting rod on the connecting rod alignment tool. 4. Put a gauge over the piston pin, and move it against the face plate.
Page 163 B1830,B2230,B2530,B3030, 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 164 B1830,B2230,B2530,B3030, 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 165 B1830,B2230,B2530,B3030, 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 baring case screws 1 to the specified torque, and remove the bearing case again.
Page 166: Cylinder
B1830,B2230,B2530,B3030, WSM ENGINE (5) Cylinder Cylinder Wear 1. Measure the I.D. of the cylinder at the six positions (see figure) with a cylinder gauge to find the maximum and minimum I.D.'s. 2. Get the difference (Maximum wear) between the maximum and the minimum I.D.'s.
Page 167: Oil Pump
B1830,B2230,B2530,B3030, WSM ENGINE (6) Oil Pump Rotor Lobe Clearance 1. Measure the clearance between lobes of the inner rotor and the outer rotor with a feeler gauge. 2. If the clearance exceeds the factory specifications, replace the oil pump rotor assembly.
Page 168 CLUTCH KiSC issued 05, 2012 A...
Page 169 MECHANISM CONTENTS 1. STRUCTURE..........................2-M1 [1] MANUAL TRANSMISSION MODEL ..................2-M1 [2] CLUTCH OPERATION ......................2-M2 (1) Clutch "Engaged" ......................2-M2 (2) Clutch "Disengaged"....................... 2-M2 KiSC issued 05, 2012 A...
Page 170: Structure
B1830,B2230,B2530,B3030, WSM CLUTCH 1. STRUCTURE [1] MANUAL TRANSMISSION MODEL (1) Engine Flywheel (4) Pressure Plate (7) Clutch Release Fork (10) Clutch Shaft (2) Clutch Disc (5) Diaphragm Spring (8) Clutch Release Bearing (11) Pressure Plate Assembly (3) Clutch Cover (6) Clutch Rod...
Page 171: Clutch Operation
B1830,B2230,B2530,B3030, WSM CLUTCH [2] CLUTCH OPERATION (1) Clutch "Engaged" When the clutch pedal is not depressed, the clutch release bearing (8) and the fingers of the diaphragm spring (5) are not connected to each other. Accordingly, the pressure plate (4) is tightly passed against the flywheel (1) by the diaphragm spring (5).
Page 172 SERVICING CONTENTS 1. TROUBLESHOOTING.........................2-S1 2. SERVICING SPECIFICATIONS ....................2-S2 3. TIGHTENING TORQUES......................2-S3 4. CHECKING, DISASSEMBLING AND SERVICING ..............2-S4 [1] CHECKING AND ADJUSTING....................2-S4 [2] DISASSEMBLING AND ASSEMBLING ................2-S5 (1) Separating Engine From Clutch housing.................2-S5 (2) Separating Clutch Assembly ..................2-S11 [3] SERVICING .........................2-S12 KiSC issued 05, 2012 A...
Page 173: Troubleshooting
B1830,B2230,B2530,B3030, WSM CLUTCH 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Clutch Drags Clutch pedal free travel excessive Adjust 2-S4 Dust on clutch disc generated from clutch disc Remove rust 2-S11 facing Release fork broken Replace 2-S11 Clutch disc or pressure plate warped...
Page 174: Servicing Specifications
B1830,B2230,B2530,B3030, WSM CLUTCH 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Clutch Pedal Free Travel 10 to 17 mm – 0.78 to 1.18 in. Clearance between Bolt and Housing Case Clearance "B" Approx. – 8.5 mm 0.33 in. Clutch Disc and Clutch Shaft Backlash –...
Page 175: Tightening Torques
B1830,B2230,B2530,B3030, WSM CLUTCH 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts: See page "5. TIGHTENING TORQUES" on page G-10.) Item N·m kgf·m lbf·ft Steering wheel mounting nut 20 to 40 2.1 to 4.0...
Page 176: Checking, Disassembling And Servicing
B1830,B2230,B2530,B3030, WSM CLUTCH 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING Checking Clutch Pedal Free Travel CAUTION • When checking, park the tractor on flat ground, apply the parking brake, stop the engine and remove the key. 1. Slightly depress the clutch pedal and measure stroke (A) at the top of pedal stroke.
Page 177: Disassembling And Assembling
• After running the engine for new minutes, stop it and check the oil level again, it low, add oil prescribed level. IMPORTANT • Use only KUBOTA SUPER UDT fluid-Use of the other oils may damage the transmission or hydraulic system. Refer to "4. LUBRICANTS, FUEL AND COOLANT" on page G-8.
Page 178 B1830,B2230,B2530,B3030, WSM CLUTCH Bonnet, Side Cover and Battery Cord 1. Open the bonnet (1) and remove the front grille (2). 2. Disconnect the battery negative cord. 3. Disconnect the head light connectors and remove the bonnet 1) side covers (3).
Page 179 B1830,B2230,B2530,B3030, WSM CLUTCH Fuel 1. Disconnect the fuel hose (1) from the fuel filter (2). 2. Drain the fuel to the fuel tank completely. (1) Fuel Hose (from Fuel Tank) (2) Fuel Filter 9Y1210003CLS0008US0 Steering Wheel, Meter Panel, Shuttle Lever and Panel Lower Cover 1.
Page 180 B1830,B2230,B2530,B3030, WSM CLUTCH Fuel Tank 1. Disconnect the leads (1) from the fuel tank (2). 2. Disconnect the overflow hoses from the fuel tank (2). 3. Remove the shutter plate (6) and the fuel tank (2). (1) Lead (4) Bolt...
Page 181 B1830,B2230,B2530,B3030, WSM CLUTCH Key Stop Solenoid and Hydraulic Delivery Pipe 1. Remove the key stop solenoid connector. 2. Remove the engine stop solenoid (9) using a small size rachet handle (1), the extension joint (2), the universal joint (3) and the thinner socket (10 mm).
Page 182 B1830,B2230,B2530,B3030, WSM CLUTCH Sub-Frames (4-cylinder Engine Model) 1. Place the rigid jack under the rear axle shaft. 2. Remove the transmission oil filter cartridge (1). 3. Loosen the sub-frame mounting bolts. 4. Remove the sub-frames (3), (7). 39.3 to 45.1 N·m Sub-frame mounting bolt 4.0 to 4.6 kgf·m...
Page 183: Separating Clutch Assembly
B1830,B2230,B2530,B3030, WSM CLUTCH (2) Separating Clutch Assembly Separating the Clutch Assembly 1. Remove the clutch assembly (2) from the flywheel. (When reassembling) • Direct the shorter end of the clutch disc boss toward the flywheel. • Apply molybdenum disulphide (Three Bond 1901 or equivalent) to the splines of clutch disc boss.
Page 184: Servicing
B1830,B2230,B2530,B3030, WSM CLUTCH [3] SERVICING Backlash between Clutch Disc and Clutch Shaft 1. Mount the clutch disc onto the propeller shaft. 2. Hold the propeller shaft so that it does not rotate. 3. Slightly move the disc and measure the displacement around the disc edge.
Page 185 TRANSMISSION KiSC issued 05, 2012 A...
Page 186 MECHANISM CONTENTS 1. STRUCTURE..........................3-M1 [1] MANUAL TRANSMISSION (WITHOUT BI-SPEED TURN MODEL)........3-M1 [2] MANUAL TRANSMISSION (WITH BI-SPEED TURN MODEL) ........... 3-M2 [3] MANUAL TRANSMISSION (WITH BI-SPEED TURN AND WITHOUT MID-PTO MODEL)..........................3-M3 [4] HST (WITH BI-SPEED TURN MODEL) ................3-M4 2.
Page 187: Structure
B1830,B2230,B2530,B3030, WSM TRANSMISSION 1. STRUCTURE [1] MANUAL TRANSMISSION (WITHOUT BI-SPEED TURN MODEL) (1) Main Clutch Section (4) Mechanical PTO Clutch (7) Rear PTO Gear Section From Front Case (2) Main Gear Shift Section Section (8) Mid-PTO Gear Section To Front Axle...
Page 188: Manual Transmission (With Bi-Speed Turn Model)
B1830,B2230,B2530,B3030, WSM TRANSMISSION [2] MANUAL TRANSMISSION (WITH BI-SPEED TURN MODEL) (1) Main Clutch Section (5) Range Gear Shift Section (9) Front Wheel Drive Gear From Front Case (2) Main Gear Shift Section (6) Differential Gear Section Section To Bi-Speed Turn Gear...
Page 189: Manual Transmission (With Bi-Speed Turn And Without Mid-Pto Model)
B1830,B2230,B2530,B3030, WSM TRANSMISSION [3] MANUAL TRANSMISSION (WITH BI-SPEED TURN AND WITHOUT MID-PTO MODEL) (1) Main Clutch Section (4) Mechanical PTO Clutch (7) Rear PTO Gear Section From Front Case (2) Main Gear Shift Section Section (8) Front Wheel Drive Gear...
Page 190: Hst (With Bi-Speed Turn Model)
B1830,B2230,B2530,B3030, WSM TRANSMISSION [4] HST (WITH BI-SPEED TURN MODEL) (1) Hydrostatic Transmission (4) Rear PTO Gear Section (7) Front Wheel Drive Gear From Front Case (HST) Section (5) Range Gear Section Section To Bi-Speed Turn Gear (2) Hydrostatic PTO Section...
Page 191: Front Case
B1830,B2230,B2530,B3030, WSM TRANSMISSION 2. FRONT CASE [1] STRUCTURE (HST WITH BI-SPEED TURN MODEL) In this tractor, clutch disk is not installed. The steel plate (3) is installed on the clutch shaft (4). Power from the engine is transmitted through the steel plate (3) to the clutch shaft (4) and HST pump shaft.
Page 192: Bi-Speed Turn Linkage
B1830,B2230,B2530,B3030, WSM TRANSMISSION [2] BI-SPEED TURN LINKAGE (1) Linkage Bi-Speed Turn lever is connected to the Bi-Speed rod (1) and the Bi-Speed Turn ON/OFF shift shaft (3). The left bevel gear case of the front axle is connected to the front Bi-Speed Turn shift shaft (4) with a Bi-Speed rod 2 (5).
Page 193: Linkage: Bi-Speed Turn "Disengaged
B1830,B2230,B2530,B3030, WSM TRANSMISSION (3) Linkage: Bi-Speed Turn “Disengaged” When the Bi-Speed Turn lever is shifted to "OFF" position, the Bi-Speed rod 1 (1) is pushed up and the Bi-Speed Turn ON/OFF shift shaft (2) is rotated clockwise. It is kept "OFF".
Page 194: Bi-Speed Turn Powertrain
B1830,B2230,B2530,B3030, WSM TRANSMISSION [3] BI-SPEED TURN POWERTRAIN (1) HYDRAULIC CIRCUIT Manual Transmission Model (1) Bi-Speed Turn Clutch (2) Bi-Speed Turn Valve 2 (3) Bi-Speed Turn Valve 1 (4) Regulating Valve (5) Power Steering Controller From Pump Port 9Y1210003TRM0009US0 HST Model...
Page 195: Bi-Speed Turn "Engaged
B1830,B2230,B2530,B3030, WSM TRANSMISSION (2) Bi-Speed Turn "Engaged" When a operator engage the Bi-Speed Turn lever to "ON" position and the front wheel steering angle is above approximately 0.714 rad (42 °), the Bi-Speed Turn engages. At the time, since both the Bi-Speed Turn valve 1 and the Bi-Speed Turn valve 2 open, the pressured oil enter into the Bi-Speed Turn clutch shaft (8).
Page 196: Manual Transmission
B1830,B2230,B2530,B3030, WSM TRANSMISSION 3. MANUAL TRANSMISSION [1] STRUCTURE (1) Main Gear Shift Section Main shift section consists of three speeds. 1st Speed Gear The 23T F2 gear (shifter) (3) slides to the engine side. The 23T F2 gear (shifter) (3) meshes to the 13T F1 gear (2).
Page 197: Shuttle Gear Shift Section
B1830,B2230,B2530,B3030, WSM TRANSMISSION (2) Shuttle Gear Shift Section The power shifted in the main gear shift section is transmitted from the 15T-32T-26T-13T shaft (2) to the shuttle shaft (3). The shuttle shift gears are the sliding mesh gears. The reverse shaft is the front wheel drive shaft (8).
Page 198: Hydrostatic Transmission
B1830,B2230,B2530,B3030, WSM TRANSMISSION 4. HYDROSTATIC TRANSMISSION [1] STRUCTURE Hydrostatic transmission is composed of variable displacement piston pump, fixed displacement piston motor and valve system. (1) Input Shaft (Pump Shaft) (6) Check Port (2) Housing (7) Check Port (3) Check and High Pressure...
Page 199 B1830,B2230,B2530,B3030, WSM TRANSMISSION (1) Cylinder Block (Motor) (9) Piston (2) Piston (10) Cylinder Block (Pump) (3) Thrust Collar (11) Charge Relief Valve (4) Motor Shaft (12) Needle Bearing (5) Retainer Plate (13) Valve Plate (6) Thrust Collar (14) Check and High Pressure...
Page 200: Pump And Motor
B1830,B2230,B2530,B3030, WSM TRANSMISSION [2] PUMP AND MOTOR (1) Piston (3) Oil (A) Pump (a) Swashplate (2) Cylinder (B) Motor Pump and motor cylinder, each containing pistons, are connected by lines. Cylinders and lines are filled with oil piston ride against swashplates located in pump and motor.
Page 201: Oil Flow And Valves
B1830,B2230,B2530,B3030, WSM TRANSMISSION [3] OIL FLOW AND VALVES (1) Oil Filter Cartridge (for HST) (7) Check and High Pressure (11) Independent PTO Control (15) Oil Tank (2) Swashplate Relief Valve (for Forward) Valve (16) Hydraulic Pump (3) Cylinder Block (for Pump)
Page 202 B1830,B2230,B2530,B3030, WSM TRANSMISSION (Continued) The pump and the motor are joined in a closed hydraulic circuit. Most of oil circulates with in the main oil circuit. A little oil lubricates and oozes out from the clearance between the moving parts in the case. Then oil in the main oil circuit of the HST needs to be supplied a want.
Page 203 B1830,B2230,B2530,B3030, WSM TRANSMISSION Neutral (1) Oil Filter Cartridge (for HST) (8) Check and High Pressure (14) Hydraulic Pump Pump A Port (2) Swashplate Relief Valve (for Reverse) (for Power Steering, Pump B Port (3) Cylinder Block (for Pump) (9) Neutral Valve (for Forward)
Page 204 B1830,B2230,B2530,B3030, WSM TRANSMISSION (Continued) When the speed control pedal (HST pedal) is in "Neutral", the variable swashplate is right-angles to the pump pistons. And the pump pistons only rotate with cylinder block (pump) without reciprocating. Since the oil is not being pumped to the motor, the cylinder block (motor) is stationary. And the output shaft does not rotate.
Page 205 B1830,B2230,B2530,B3030, WSM TRANSMISSION Forward (1) Oil Filter Cartridge (for HST) (8) Check and High Pressure (14) Hydraulic Pump Pump A Port (2) Swashplate Relief Valve (for Reverse) (for Power Steering, Pump B Port (3) Cylinder Block (for Pump) (9) Neutral Valve (for Forward)
Page 206 B1830,B2230,B2530,B3030, WSM TRANSMISSION (Continued) When the speed control pedal (HST pedal) is stepped on and set to "Forward", the variable swashplate is tilted as shown in figure above. As the pump cylinder block rotates with the input shaft, oil is forced out of pump port A at high pressure. As pressure oil from the pump cylinder block enters to motor port C, the pistons, which align with port C, are pushed against the swashplate and slide down the inclined surface.
Page 207 B1830,B2230,B2530,B3030, WSM TRANSMISSION Reverse (1) Oil Filter Cartridge (for HST) (8) Check and High Pressure (14) Hydraulic Pump Pump A Port (2) Swashplate Relief Valve (for Reverse) (for Power Steering, Pump B Port (3) Cylinder Block (for Pump) (9) Neutral Valve (for Forward)
Page 208: Control Linkage
B1830,B2230,B2530,B3030, WSM TRANSMISSION (Continued) When the speed control pedal (HST pedal) is stepped on and set to "Reverse", the variable swashplate is tilted as shown in figure above. As the pump cylinder block rotates with the input shaft, oil is forced out of pump port B at high pressure. As pressure oil from the pump cylinder block enters to motor port D, the pistons, which align with port D, are pushed against the swashplate and slide down the inclined surface.
Page 209: Cruise Control
B1830,B2230,B2530,B3030, WSM TRANSMISSION 5. CRUISE CONTROL [1] CRUISE CONTROL LINKAGE (1) Cruise Control "ON" Position (1) Return Spring (2) Cruise Control Lever (3) Cruise Lock 1 (4) Release Rod (5) Roller (6) Neutral Holder (7) Trunnion Shaft (8) HST Pedal...
Page 210: Cruise Control "Off" Position
B1830,B2230,B2530,B3030, WSM TRANSMISSION (2) Cruise Control "OFF" Position (1) Return Spring (2) Cruise Control Lever (3) Cruise Lock 1 (4) Release Rod (5) Roller (6) Neutral Holder (7) Trunnion Shaft (8) HST Pedal (9) Brake Pedal (10) Cruise Lock 2...
Page 211: Range Gear Shift Section
B1830,B2230,B2530,B3030, WSM TRANSMISSION 6. RANGE GEAR SHIFT SECTION Range gear shift lever (1) is located at left side fender. Range gear shift lever (1) can select three speed range, low speed, mid speed and high speed. Range gear shift lever (1) and 18T shifter gear (10) are linked with range shift arm (3) and range shift fork (2) etc..
Page 212: Front Wheel Drive Section
2 Wheel Drive Position (3) Shifter Power to Front Wheels (4) Front Wheel Drive Shaft Power to Rear Wheels (5) 20T Shifter Gear (B1830, B2230, B2530) [a] HST Model 19T Shifter Gear (B3030) [b] Manual Transmission (6) 13T Gear (B1830, B2230,...
Page 213: Pto System (Hydraulic Pto Clutch Model)
The rear PTO shift does not rotate at this "Mid-PTO" position. (1) PTO Shift Lever (12) Rear PTO Shifter (2) PTO Shift Arm (13) 8T Rear PTO Shaft (B1830, (3) Rear PTO Arm B2230, B2530) (4) Rear PTO Control Plate 10T Rear PTO Shaft (B3030)
Page 214: Rear Pto Section
B1830,B2230,B2530,B3030, WSM TRANSMISSION [2] REAR PTO SECTION When the PTO shift lever (1) is set to "REAR PTO" (R) position, the PTO shift lever (1) pushes the control rod (5). The control rod (5) pushes the PTO shift arm (2).
Page 215: Rear Pto / Mid-Pto Section
Independent PTO Clutch → PTO shifter (7) → 25T mid gear → 26T gear on front wheel drive shaft → 17T - 26T mid gear → 30T gear → Mid PTO shaft (B1830, B2230, B2530: 18T, B3030: 17T). (1) PTO Shift Lever...
Page 216: Mid-Pto Section
(1) PTO Shift Lever (15) 30T Gear (2) PTO Shift Arm (16) Mid PTO Shaft (3) Rear PTO Arm B1830, B2230, B2530: 18T (4) Rear PTO Control Plate B3030: 17T (5) Control Rod (17) Transmission Case (6) Independent PTO Clutch...
Page 217 → 30T gear (15) → Mid PTO shaft (16). (14) 17T-26T id Gear To Mid Mount Mower or (15) 30T Gear Front Implement (16) Mid PTO Shaft B1830, B2230, B2530: 18T B3030: 17T 9Y1210003TRM0030US0 3-M31 KiSC issued 05, 2012 A...
Page 218: Pto System (Mechanical Pto Clutch Model)
B1830,B2230,B2530,B3030, WSM TRANSMISSION 9. PTO SYSTEM (MECHANICAL PTO CLUTCH MODEL) [1] STRUCTURE The PTO shift lever location is almost same as the hydraulic PTO clutch model. The PTO positions are selected to three positions, the "Rear PTO" position (R), the "Rear PTO/ the mid-PTO"...
Page 219: Rear Pto Section
B1830,B2230,B2530,B3030, WSM TRANSMISSION [2] REAR PTO SECTION When the PTO shift lever is set to "Rear PTO" position (R), the PTO shifter (6) slides to "Rear PTO" position (R). The PTO shifter (6) meshes to the spline of the PTO clutch shaft (8).
Page 220: Mid-Pto Section
B1830,B2230,B2530,B3030, WSM TRANSMISSION [4] MID-PTO SECTION When the PTO shift lever is set to "Mid-PTO" position, the PTO shifter (6) slides to "Mid-PTO" position (M). The PTO shifter meshes to the spline of the 25T mid-gear (7). The power is transmitted from the first shift shaft (1) to the mid-PTO as shown in the figure.
Page 221: One-Way Clutch System
B1830,B2230,B2530,B3030, WSM TRANSMISSION [5] ONE-WAY CLUTCH SYSTEM In manual transmission models, a mechanical PTO is adopted. The one-way PTO clutch is located between the first shift shaft (1) and the PTO clutch shaft (18). The one-way clutch is composed of the first shift...
Page 222: Differential Gear System
B1830,B2230,B2530,B3030, WSM TRANSMISSION 10. DIFFERENTIAL GEAR SYSTEM [1] DIFFERENTIAL FUNCTION (1) Spiral Bevel Pinion (3) Differential Side Gear (5) Differential Pinion Shaft (7) Differential Side Gear (2) Differential Pinion (4) Spiral Bevel Gear (6) Differential Pinion (8) Differential Case During Straight Running Rotation of the spiral bevel pinion (1) is transmitted to the spiral bevel gear (4) and differential case (8).
Page 223: Differential Lock
B1830,B2230,B2530,B3030, WSM TRANSMISSION [2] DIFFERENTIAL LOCK (1) Differential Pinion (4) Differential Gear Shaft (Right) (7) Differential Pinion Shaft (9) Differential Gear Shaft (Left) (2) Shift Fork (5) Differential Lock Clutch (8) Spiral Bevel Gear (10) Rear Axle (B3030) (3) Differential Lock Lever...
Page 224 SERVICING CONTENTS 1. TROUBLESHOOTING.........................3-S1 2. SERVICING SPECIFICATIONS ....................3-S4 3. TIGHTENING TORQUES......................3-S7 4. CHECKING, DISASSEMBLING AND SERVICING ..............3-S8 [1] CHECKING AND ADJUSTING....................3-S8 (1) Bi-Speed Turn .........................3-S8 (2) HST ..........................3-S9 (3) Cruise Control........................3-S13 [2] PREPARATION ........................3-S14 (1) Draining Lubricants and Coolant ...................3-S14 (2) Separating Cabin from Tractor Body (CABIN)...............3-S17 (3) Separating Engine and Front Case from Tractor............3-S24 [3] DISASSEMBLING AND ASSEMBLING ................3-S33...
Page 225: Troubleshooting
B1830,B2230,B2530,B3030, WSM TRANSMISSION 1. TROUBLESHOOTING HYDROSTATIC TRANSMISSION SECTION Reference Symptom Probable Cause Solution Page System Will Not Oil level is low Check oil level or fill G-16, Operate in Either oil to proper level 3-S15 Direction Speed control pedal (HST pedal) linkage...
Page 226 B1830,B2230,B2530,B3030, WSM TRANSMISSION Reference Symptom Probable Cause Solution Page Loss of Power Oil level is too low Check oil level or fill G-16, oil to proper level 3-S15 Speed control pedal (HST pedal) linkage Repair linkage 3-S13 defective Charge pressure is too low...
Page 227 B1830,B2230,B2530,B3030, WSM TRANSMISSION FRONT CASE Reference Symptom Probable Cause Solution Page Noise From Front Clutch shaft spline worn Replace 3-S33 Case Bearing Worn Replace 3-S33 Gear worn or broken Replace 3-S35 Bi-Speed Turn clutch damaged Replace 3-S35 TRANSMISSION CASE SECTION...
Page 228: Servicing Specifications
B1830,B2230,B2530,B3030, WSM TRANSMISSION 2. SERVICING SPECIFICATIONS BI-SPEED TURN SECTION Item Factory Specification Allowable Limit Charge Relief Valve Setting Pressure 0.4 to 0.6 MPa – 4.1 to 6.1 kgf/cm 58 to 87 psi Clutch Disc Thickness 1.70 to 1.90 mm 1.55 mm 0.067 to 0.075 in.
Page 229 B1830,B2230,B2530,B3030, WSM TRANSMISSION INDEPENDENT PTO CLUTCH Item Factory Specification Allowable Limit Clutch Disc Thickness 1.70 to 1.90 mm 1.55 mm 0.067 to 0.075 in. 0.061 in. Clutch Plate Thickness 1.15 to 1.25 mm 1.10 mm (With Hole) 0.045 to 0.049 in.
Page 230 0.10 to 0.30 mm – 0.0040 to 0.011 in. • B1830 (Serial No. 30882 and below) • B2230 Manual Transmission Model (Serial No. 30513 and below) • B2230 HST Model (Serial No. 80595 and below) • B2530 Manual Transmisson Model (Serial No. 31298 and below) •...
Page 231: Tightening Torques
B1830,B2230,B2530,B3030, 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 "5. TIGHTENING TORQUES" on page G-10.) Item N·m kgf·m lbf·ft Checking port plug 30 to 44 3.0 to 4.5...
Page 232: Checking, Disassembling And Servicing
B1830,B2230,B2530,B3030, WSM TRANSMISSION 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING (1) Bi-Speed Turn Charge Pressure CAUTION • When checking, park the tractor on flat ground and fully engage the parking brake. 1. Remove the plug (R 1/8) (1) at the front case right side (3 cylinder engine model).
Page 233: Hst
B1830,B2230,B2530,B3030, WSM TRANSMISSION (2) HST Charge Pressure CAUTION • When checking, park the tractor on flat ground and fully engage the parking brake. 1. Remove the lowering speed adjusting knob and the seat under cover. 2. Remove the plug from P1 port (reverse) or P2 port (forward).
Page 234 B1830,B2230,B2530,B3030, WSM TRANSMISSION High Pressure Relief Valve Pressure (Reverse) CAUTION • When checking, park the tractor on flat ground and fully engage the parking brake. 1. Remove the lowering speed adjusting knob and the seat under cover. 2. Remove the plug from P1 port (reverse).
Page 235 B1830,B2230,B2530,B3030, WSM TRANSMISSION High Pressure Relief Valve Pressure (Forward) CAUTION • When checking, park the tractor on flat ground and fully engage the parking brake. 1. Remove the lowering speed adjusting knob and the seat under cover. 2. Remove the plug from P2 port (forward).
Page 236 Readjustment of Relief Valve (When the HST does not work due to its loose hexagon socket head screw) IMPORTANT • The KUBOTA does not recommend the readjustment of relief valve. And KUBOTA will recommend to replace with genuine parts. • As the HST may be damaged if the pressure is set to higher by mistake, be careful when adjusting it.
Page 237: Cruise Control
B1830,B2230,B2530,B3030, WSM TRANSMISSION (3) Cruise Control Cruise Control Adjustment 1. Before adjusting the cruise control adjustment, adjust the brake pedal free travel (2) securely. 30 to 40 mm (1.18 to 1.57 in.) on the pedal Brake pedal free Keep the free travel in the right and the left brake pedals travel "A"...
Page 238: Preparation
• Never mix two different types of oil. • Use the proper SAE Engine Oil according to ambient temperatures. • Refer to "4. LUBRICANTS, FUEL AND COOLANT" on page G-8. 3.0 L B1830, B2230, B2530 3.2 U.S.qts 2.6 lmp.qts Engine oil capacity 4.1 L B3030 4.3 U.S.qts...
Page 239 4. After draining the transmission fluid, reinstall the drain plugs (1), (3), (5). IMPORTANT • Use only KUBOTA UDT oil. Use of other oils may damage the transmission or hydraulic system. Refer to "4. LUBRICANTS, FUEL AND COOLANT" on page G-8.
Page 240 B1830,B2230,B2530,B3030, WSM TRANSMISSION Draining Coolant CAUTION • Do not remove radiator cap while coolant is hot. When cool, slowly rotate cap to the first stop and allow sufficient time for excess pressure to escape before removing the cap completely. 1. Stop the engine, remove the key and let it cool down.
Page 241: Separating Cabin From Tractor Body (Cabin)
B1830,B2230,B2530,B3030, WSM TRANSMISSION (2) Separating Cabin from Tractor Body (CABIN) Discharging R134a Refrigerant Prepare for the R134a refrigerant recovery and recycling machine. 1. Connect low pressure side hose (blue) from the recovery and recycling machine to LO pressure side charging valve (1) on the compressor (3).
Page 242 B1830,B2230,B2530,B3030, WSM TRANSMISSION Removing Receiver, Condenser and Refrigerant Hoses 1. Disconnect the high pressure pipe (3) and the low pressure pipe (2) from the compressor. 2. After removing the battery, disconnect the connector from the receiver pressure switch. Remove the bolts (8) and the receiver (10).
Page 243 B1830,B2230,B2530,B3030, WSM TRANSMISSION Disconnecting Water Hoses 1. Loosen the water drain cock (1). 2. Drain the coolant. 3. Remove the hose clamps (3). Disconnect the water hoses (2) from the engine. (When reassembling) • Fill the coolant to the specified capacity.
Page 244 B1830,B2230,B2530,B3030, WSM TRANSMISSION Removing HST Pedal, Floor Mat and Seat Front Cover 1. Remove the bolts (2) and the HST pedal (1). 2. Remove the grip (4). Remove the differential lock pin at the right side rear axle shaft. 3. Remove the bolts (6) and the seat front cover (5) from the fenders and the steps.
Page 245 B1830,B2230,B2530,B3030, WSM TRANSMISSION Removing Cover, Step and Stopper 1. Remove the bolts (3). 2. Remove the cover (1). 3. Remove the bolts and the step (2). 4. Remove the bolt and the stopper (5). 5. Remove the cabin mounting bolts and the nuts.
Page 246 B1830,B2230,B2530,B3030, WSM TRANSMISSION Disconnecting Wiring Harness and Removing Cabin Mounting Bolt 1. After removing the seat, remove the bolts (2) and the rear fender cover (1). 2. Remove the bolts (3) from the cabin frame. 3. Disconnect the connector from the window washer tank (4).
Page 247 B1830,B2230,B2530,B3030, WSM TRANSMISSION Dismounting Cabin 1. Hook the cabin with the nylon slings not to damage the other roof. 2. Dismount the cabin from the tractor body. 3. Support the cabin with the rigid jacks. (When reassembling) • If the beam shield (1) is damaged, replace it with a new one.
Page 248: Separating Engine And Front Case From Tractor
4. After draining the transmission fluid, reinstall the drain plugs (1), (3), (5). IMPORTANT • Use only KUBOTA UDT oil. Use of other oils may damage the transmission or hydraulic system. Refer to "4. LUBRICANTS, FUEL AND COOLANT" on page G-8.
Page 249 B1830,B2230,B2530,B3030, WSM TRANSMISSION Bonnet, Front Grille, Side Covers and ROPS 1. Open the bonnet. 2. Remove the pin (3) and the plain washer (2). 3. Remove the wiring harness from the bonnet. 4. Remove the bonnet. 5. Remove the front grille and the side covers.
Page 250 B1830,B2230,B2530,B3030, WSM TRANSMISSION Oil Cooler and Battery Stay (HST) 1. Remove the oil cooler pipe plate spring (3). 2. Remove the clamp(4). 3. Remove the battery stay (2). NOTE • Don't damage the O-ring (5). • Don't damage the oil cooler pipe and delivery pipes.
Page 251 B1830,B2230,B2530,B3030, WSM TRANSMISSION Fuel 1. Disconnect the fuel hose (1) from the fuel filter (2). 2. Drain the fuel from the fuel tank completely. (1) Fuel Hose (from Fuel Tank) (2) Fuel Filter 9Y1210003TRS0030US0 HST Pedal and Floor Mat 1. Remove the HST pedal mounting bolts (2).
Page 252 B1830,B2230,B2530,B3030, WSM TRANSMISSION Steering Wheel, Meter Panel, Shuttle Lever and Panel Lower Cover 1. Remove the steering wheel cap. 2. Remove the steering wheel mounting nut. 3. Remove the steering wheel with a steering wheel puller (Code No. 07916-51090). 4. Remove the accelerator lever grip (3) and the steering boot (2).
Page 253 B1830,B2230,B2530,B3030, WSM TRANSMISSION Fuel Tank 1. Disconnect the leads (1) from the fuel tank (2). 2. Remove the steering post stay (3). 3. Disconnect the overflow hoses from the fuel tank (2). 4. Remove the fuel tank (2). (1) Lead...
Page 254 B1830,B2230,B2530,B3030, WSM TRANSMISSION Key Stop Solenoid and Hydraulic Delivery Pipe 1. Remove the key stop solenoid connector. 2. Remove the engine stop solenoid (9) using a small size rachet handle (1), the extension joint (2), the universal joint (3) and the thinner socket (10 mm).
Page 255 B1830,B2230,B2530,B3030, WSM TRANSMISSION Steps (4-cylinder Engine, ROPS Model) 1. Remove the bolts (1) and the nut (4). 2. Remove the brake spring from the step (R.H.) (2). Remove the brake spring and the clutch spring from the step (L.H.) (3).
Page 256 B1830,B2230,B2530,B3030, WSM TRANSMISSION Separating Engine with Front Axle 1. Reinstall the rear tires. 2. Support the transmission with a disassembling stand. 3. Hook the engine with a hoist. 4. Place the disassembling stand under the main frame. 5. Disconnect the power steering hoses (2).
Page 257: Disassembling And Assembling
B1830,B2230,B2530,B3030, WSM TRANSMISSION [3] DISASSEMBLING AND ASSEMBLING (1) Front Case Front Case Assembly 1. Support the engine securely. 2. Remove the front case mounting bolts (1). 3. Remove the front case (1) from the frame (3). (When reassembling) • Apply liquid gasket (Three Bond 1206D or equivalent) to the joint face of the engine and the front case.
Page 258 B1830,B2230,B2530,B3030, WSM TRANSMISSION Steel Plate 1. Remove the steel plate mounting bolts (1). 2. Remove the steel plate (2) from the flywheel. • Apply liquid gasket (Three Bond 1206D or equivalent) to the joint face of the engine and the front case.
Page 259 B1830,B2230,B2530,B3030, WSM TRANSMISSION Bi-Speed Turn Clutch Assembly and Front Wheel Drive Shaft 1 1. Remove the clutch shaft 1), the front wheel drive shaft 1 (2) and Bi-Speed Turn clutch shaft (3) from the front case (4). 2. Remove the internal cir-clip (7).
Page 260 B1830,B2230,B2530,B3030, WSM TRANSMISSION Disassembling Bi-Speed Turn Clutch Assembly 1 1. Remove the bearings (2). 2. Remove the 30T gear (3), the 35T gear (4) and the cir-clip (5). 3. Remove the bearing (9). 4. Remove the thrust collar (8) and the 23T gear (7).
Page 261 B1830,B2230,B2530,B3030, WSM TRANSMISSION Disassembling Bi-Speed Turn Clutch Assembly 2 1. Remove the Bi-Speed Turn clutch shaft (1). 2. Loosen and remove the flange nuts (7). 3. Remove the shifter (6). 4. Remove the cir-clip with the special tools (21), (22).
Page 262: Main Gear Shift Section
B1830,B2230,B2530,B3030, WSM TRANSMISSION (2) Main Gear Shift Section Steps, Brake Rods, Hydraulic Pipes, Sub-Frames and Wiring Harness 1. Remove the steps (1) and the brake springs. 2. Disconnect the connectors from the HST neutral switch, the PTO switch and the PTO valve switch. Move the wiring harness to the engine side.
Page 263 B1830,B2230,B2530,B3030, WSM TRANSMISSION Separating Main Gear Shift Section Assembly 1. Remove the propeller shaft (1). 2. Remove the spring pins (3), (4). 3. Remove the main gear shift section mounting bolts (7) and the nuts (6). 4. Separate the main gear shift section case assembly (5) from the transmission case.
Page 264 B1830,B2230,B2530,B3030, WSM TRANSMISSION Removing Mechanical PTO Clutch Cam and Bearing Holder 1. Remove the cir-clip (11). 2. Remove the one way clutch cam (10), the one way clutch spring (9) and the collar (8). 3. Remove the bearing holder mounting bolts (2).
Page 265: Mechanical Pto Clutch Assembly
B1830,B2230,B2530,B3030, WSM TRANSMISSION (3) Mechanical PTO Clutch Assembly Separating Transmission Case from Differential Case 1. Remove the transmission mounting bolts and nuts. 2. Separate the transmission case (1) from the differential case (2). (When reassembling) • Install the coupling to the mechanical PTO clutch shaft.
Page 266 B1830,B2230,B2530,B3030, WSM TRANSMISSION Removing PTO ON-OFF Shift Fork and PTO Shift Arm 1. Remove the cir-clip (1) from the PTO clutch shaft (3). 2. Remove the cir-clip (4) the PTO ON-OFF arm shaft (6). 3. Remove the shifter (2) and the PTO clutch spring (7).
Page 267: Hydrostatic Transmission (Hst)
B1830,B2230,B2530,B3030, WSM TRANSMISSION Removing Disassembling Mechanical Clutch Assembly 1. Remove the rear PTO shifter (23) from the PTO clutch shaft (22). 2. Disassemble the mechanical PTO clutch assembly. (When reassembling) • Check the mechanical PTO clutch assembly parts the damage and wear, replace it.
Page 268 B1830,B2230,B2530,B3030, WSM TRANSMISSION HST Assembly 1. Remove the HST mounting bolts (2). 2. Separate the HST assembly (1) from the transmission. (When reassembling) • Install the O-ring (3) to the transmission case. • Apply liquid gasket (Three Bond 1206D or equivalent) to the groove (4) of the transmission case.
Page 269 B1830,B2230,B2530,B3030, WSM TRANSMISSION Plate Push Rod, Neutral Arm and Neutral Holder 1. Remove the plate push rod (1). 2. Remove the spring (4). 3. Remove the neutral arm mounting bolt. 4. Loosen the bolt of the neutral holder (3). 5. Remove the neutral holder (3).
Page 270 B1830,B2230,B2530,B3030, WSM TRANSMISSION Center Section 1 1. Remove the center section mounting hex. bolts (2). 2. Separate the HST housing (3) from the center section (1). (When reassembling) • Use a new gasket. • Install the poppet to the center section (1). Don't drop the spring (5).
Page 271 B1830,B2230,B2530,B3030, WSM TRANSMISSION Valve Plates 1. Pushing the valve plate (2) against the anchor pin (3), lift the valve plate (2) to remove. 2. Remove the valve plate (2). 3. Remove the valve plate (4). (When reassembling) • Install the groove (5) the valve plates (2), (4) to the anchor pins (3) securely.
Page 272 B1830,B2230,B2530,B3030, WSM TRANSMISSION Removing Neutral Valve 1. Remove the neutral valve (1) with the rachet handle and the thin socket (27 mm (1.06 in.)). (When reassembling) 58.5 to 68.6 N·m Tightening torque Neutral valve body 6.0 to 7.0 kgf·m 43.4 to 50.6 lbf·ft...
Page 273 B1830,B2230,B2530,B3030, WSM TRANSMISSION Neutral Valve 1. Remove the neutral valve body (4). 2. Remove the pin (6) from the neutral valve body (4). 3. Remove the plug (10) with 2.5 mm hex. wrench (11). 4. Push the neutral valve (3) with 2.5 mm hex. wrench (11) not to damage it.
Page 274 B1830,B2230,B2530,B3030, WSM TRANSMISSION HST Housing Case Cylinder Blocks 1. Remove the cylinder blocks (1) and (4) from the pump shaft (2) and the motor shaft (3). 2. Remove the cir-clip (5) and spring (6) from the cylinder block. (When reassembling) •...
Page 275 B1830,B2230,B2530,B3030, WSM TRANSMISSION Piston and Retainer Plate 1. Remove the pistons (2) with the retainer plates (1). (When reassembling) • Install the piston to its original position of the cylinder block. • Check the direction of the retainer plate (1) as shown in the picture.
Page 276 B1830,B2230,B2530,B3030, WSM TRANSMISSION Motor Shaft 1. Remove the internal cir-clip (5) from the HST housing. 2. Remove the cover with an O-ring. 3. Remove the motor shaft (2) with the ball bearing (6) from the HST housing. 4. Remove the external cir-clip (7) from the motor shaft (2).
Page 277 B1830,B2230,B2530,B3030, WSM TRANSMISSION Trunnion Shaft 1. Remove the internal cir-clip (1) from the HST housing. 2. Remove the internal cir-clip (8) from the HST housing. 3. Strike out the trunnion shaft (2) slightly with a plastic hammer to the left side not to damage the o-rings (7), (4).
Page 278: Pto Clutch Case (Hst Model)
B1830,B2230,B2530,B3030, WSM TRANSMISSION (5) PTO Clutch Case (HST Model) Separating Differential case and PTO Clutch Case 1. Remove the transmission case mounting bolts. 2. Separate the transmission case (1) from the differential case (2). 3. Remove the PTO brake plate 4 mounting bolt (4).
Page 279: Bevel Pinion Shaft
• Check the gear teeth number and assemble the bevel pinion shaft assembly. Model 4WD gear (1) Gear (2) B1830 M/T, B2230 M/T, B2530 M/T B2230 HST, B2530 HST B3030 HST M/T: Manual Transmission (1) 4WD Gear (3) 25T-31T Gear...
Page 280: Range Gear Shaft
B1830,B2230,B2530,B3030, WSM TRANSMISSION (7) Range Gear Shaft Range Gear Shaft Assembly 1. Remove the cir-clip (1) from the range gear shaft (2). 2. Remove the spring pin from the shift arm lever (4). 3. Remove the range gear shaft assy.(3) and the fork rod (5) from the transmission case.
Page 281: Front Wheel Drive Shaft
4. Remove the 26T gear (3) and the ball bearing (7). (1) 4WD Shaft (6) Cir-clip (2) Collar (7) Ball Bearing (3) 26T Gear (8) 4WD Gear (4) Needle Bearing B1830, B2230, B2530: 20T (5) Collar B3030: 19T 9Y1210003TRS0075US0 3-S57 KiSC issued 05, 2012 A...
Page 282: Independent Pto Clutch Shifter
B1830,B2230,B2530,B3030, WSM TRANSMISSION 4WD Shaft Arm 1. Remove the bolt (4) and the washer with rubber (3). (When reassembling) • Install the 4WD gear (5) to the 4WD shaft. • Install the 4WD shaft arm (6) to the 4WD gear (5).
Page 283 B1830,B2230,B2530,B3030, WSM TRANSMISSION Installing PTO Shifter 1. Install the spring (3) and the ball (2) to the transmission. 2. Push the ball (2) by finger from the inside of the transmission case. 3. Push the PTO shift arm ball guide (1) into the transmission case as shown in the picture.
Page 284: Independent Pto Clutch
B1830,B2230,B2530,B3030, WSM TRANSMISSION (10) Independent PTO Clutch PTO Clutch Case 1. Remove the external cir-clip (11) from the spline boss (12). 2. Remove the internal cir-clip (13) from the PTO clutch case (2). 3. Remove the clutch disks (9) and the clutch plates (10) from the PTO clutch case (2).
Page 285 B1830,B2230,B2530,B3030, WSM TRANSMISSION PTO Clutch Spring 1. Set the PTO clutch spring compressor (1) to the PTO clutch case (2). (Refer to G-61.) 2. Tighten the nut and remove the external cir-clip (3). 3. Remove the spring collar (4) and the PTO clutch spring (5).
Page 286 B1830,B2230,B2530,B3030, WSM TRANSMISSION Spline Boss Cir-clip 1. Push the cir-clip with a small screw driver through the small hole of the spline boss (1). 2. Lift the cir-clip (2) with a screw driver not to damage it. (When reassembling) • Install the cir-clip (2) holding it by hands.
Page 287 B1830,B2230,B2530,B3030, WSM TRANSMISSION PTO Shaft 1. Remove the thrust bearing (6) and the PTO shifter (4) not to damage the seal rings (5) located at the PTO shaft front side. 2. Remove the seal rings (5) located at the PTO shaft rear side.
Page 288: Mid-Pto Section
B1830,B2230,B2530,B3030, WSM TRANSMISSION (11) Mid-PTO Section Mid-gear and Idle Shaft (Mid-PTO Model) 1. Remove the idle shaft (2) from the transmission case using a screw driver. 2. Remove the mid-gear (1) from the transmission case. 3. Remove the ball bearings (4), (5) and the internal cir-clip (6) from the mid-gear (1).
Page 289 A of the transmission case and the mid-PTO case (2). (1) 30T Mid-gear (5) Internal Cir-clip (2) Mid-PTO Case (6) Ball Bearing (3) Mid-gear Shaft (7) Ball Bearing B1830, B2230, B2530: 18T B3030: 17T Joint Surface (4) Mid-PTO Oil Seal 9Y1210003TRS0085US0 3-S65 KiSC issued 05, 2012 A...
Page 290: Differential Gear Section
B1830,B2230,B2530,B3030, WSM TRANSMISSION (12) Differential Gear Section Separating Hydraulic Cylinder, Transmission Case and Rear Axles 1. Remove the hydraulic cylinder as an assembly. 2. Separate the transmission case. 3. Separate the rear axles. (When reassembling) 39.3 to 44.1 N·m Hydraulic cylinder 4.0 to 4.5 kgf·m...
Page 291: Servicing
B1830,B2230,B2530,B3030, WSM TRANSMISSION Differential Bearing Holder (R.H.) 1. Remove the differential holder mounting bolts (1). 2. Remove the differential holder (2) and shims (3), (4). (When reassembling) • 0.5 mm (0.020 in.) shim Parts No. 66591-1498-0 • 0.2 mm (0.008 in.) shim Parts No. 66591-1499-0 Differential bearing holder 17.7 to 20.5 N·m...
Page 292: Hst
B1830,B2230,B2530,B3030, WSM TRANSMISSION PTO Brake Disk and Brake Plate 1 1. Measure the PTO brake disk thickness with a vernier calipers. 2. Measure the brake plate thickness with a vernier calipers. 3. If the thickness is less than the allowable limit, replace it.
Page 293 B1830,B2230,B2530,B3030, WSM TRANSMISSION Piston Slipper and Retainer Plate 1. Check the slipper (1) for flatness. 2. If rounded, replace piston. 3. Measure the thickness of piston slipper. 4. If the measurement is less than the allowable limit, replace the piston.
Page 294 B1830,B2230,B2530,B3030, WSM TRANSMISSION Thrust Collars and Bearing Surface 1. Check the thrust collars (1) for scratches and excessive wear. 2. If worn or scored, replace it. 3. Check the bearing surface (2) of trunnion shaft (swashplate)(3) for scratches and excessive wear.
Page 295: Independent Pto Clutch
B1830,B2230,B2530,B3030, WSM TRANSMISSION Neutral Valve 1. Check the holes of the valve body (9) and the neutral valve (4) for clogging. 2. If clogged, open hole with compressed air. 3. Replace the O-rings (2), (6), (8) and the backup ring (7) for scratches and damage.
Page 296: Transmission Case
B1830,B2230,B2530,B3030, WSM TRANSMISSION Clutch Disc Wear 1. Measure the clutch disc thickness with vernier calipers. 2. If the thickness is less than the allowable limit, replace it. 1.70 to 1.90 mm Factory specification 0.067 to 0.075 in. Clutch disc wear 1.55 mm...
Page 297: Differential Gear
B1830,B2230,B2530,B3030, WSM TRANSMISSION Clearance between Shift Fork and Shift Gear Groove 1. Insert the fork into the shift gear groove and measure the clearance with a feeler gauge. 2. If the clearance exceeds the allowable limit, replace it. 0.10 to 0.35 mm...
Page 298 2. Measure the differential pinion I.D. with an inside micrometer, and calculate the clearance. 3. If the clearance exceeds the allowable limit, replace faulty parts. • B1830 (Serial No. 30882 and below) • B2230 Manual Transmission Model (Serial No. 30513 and below) •...
Page 299 B1830,B2230,B2530,B3030, WSM TRANSMISSION Backlash between Spiral Bevel Pinion and Spiral Bevel Gear (1) Shim (2) Shim (3) Spiral Bevel Pinion (4) Bearing Holder (5) Shim (6) Spiral Bevel Gear (7) Shim 1. Set the dial indicator (lever type) with its finger on the end of spiral bevel pinion (3).
Page 300: Rear Axle
REAR AXLE KiSC issued 05, 2012 A...
Page 301 MECHANISM CONTENTS 1. STRUCTURE..........................4-M1 KiSC issued 05, 2012 A...
Page 302 B1830,B2230,B2530,B3030, WSM REAR AXLE 1. STRUCTURE (1) Differential Gear Shaft (3) Rear Axle Case (5) Spur Gear (7) Differential Gear (2) Ball Bearing (4) Rear Axle (6) Spiral Bevel Gear The rear axles are the semi floating type with ball bearing (2) between the rear axle (4) and the rear axle case (3), which supports the rear wheel load as well as transmitting power to the rear wheels.
Page 303 SERVICING CONTENTS 1. TROUBLESHOOTING.........................4-S1 2. TIGHTENING TORQUES......................4-S2 3. DIASSEMBLING AND SERVICING ....................4-S3 [1] DIASSEMBLING AND ASSEMBLING...................4-S3 [2] SERVICING ...........................4-S7 KiSC issued 05, 2012 A...
Page 304 B1830,B2230,B2530,B3030, WSM REAR AXLE 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Excessive or Unusual Improper backlash between differential gear Replace 3-S74, Noise at All Time shaft and final reduction gear 3-S75 Bearing worn Replace 4-S6 Insufficient or improper type of transmission fluid...
Page 305 Rear wheel cotter setting bolt and nut 123 to 147 12.6 to15.0 91 to 108 [B1830, B2230, B2530] Rear wheel hub mounting nut [B1830, B2230, B2530] 108 to 125 11.0 to 12.8 80 to 93 Rear axle case mounting bolt (M10) 39.3 to 44.1...
Page 306 4. After draining the transmission fluid, reinstall the drain plugs (1), (3), (5). IMPORTANT • Use only KUBOTA UDT oil. Use of other oils may damage the transmission or hydraulic system. Refer to "4. LUBRICANTS, FUEL AND COOLANT" on page G-8.
Page 307 B1830,B2230,B2530,B3030, WSM REAR AXLE Removing Rear Wheels and Rear Axle [Hexagon rear axle: B1830, B2230, B2530] 1. Support the tractor sub-frame with a jack. 2. Remove the snap pin (1) and the wheel hub pin (2). 3. Loosen and remove the nut and the spring washer (5).
Page 308 B1830,B2230,B2530,B3030, WSM REAR AXLE (Continued) (7) Bolt B3030HD (Serial No. 90000 and (8) Rear Axle, R.H. below), B2530HD (Serial No. (9) Sub-frame, R.H. 90000 and below), B2530D (Serial (10) Brake Rod No. 50000 and below), B2230HD (11) Sub Frame, L.H.
Page 309 4. Remove the transmission oil filter bracket (7). (1) Spring (5) Ball Bearing (2) Differential Lock Shift Fork (6) External Cir-clip (3) Differential Lock Clutch (7) Transmission Oil Filter Bracket (4) 58T Gear (B1830, B2230, B2530) 57T Gear (B3030) 9Y1210003RAS0005US0 4-S6 KiSC issued 05, 2012 A...
Page 310 • Tap in the ball bearing to the rear axle case. (1) Fork Rod (4) Ball Bearing (2) Brake Shaft Assembly (5) Rear Axle Shaft (3) 58T Gear (B1830, B2230, B2530) (6) Oil Seal 57T Gear (B3030) (7) Ball Bearing 9Y1210003RAS0006US0...
Page 311 BRAKES KiSC issued 05, 2012 A...
Page 312 MECHANISM CONTENTS 1. FEATURE ........................... 5-M1 2. OPERATION..........................5-M2 KiSC issued 05, 2012 A...
Page 313 B1830,B2230,B2530,B3030, WSM BRAKES 1. FEATURE Independent mechanical wet disc brakes are used for the right and left travelling brakes. They are operated by the brake pedals through the mechanical linkages provide stable braking require little adjustment.The parking brake is mechanical type which is designed to actuate the travelling brakes through the parking brake linkages.
Page 314 B1830,B2230,B2530,B3030, WSM BRAKES 2. OPERATION The brake body incorporated in the rear axle case (1) filled with transmission oil and is designed to brake when the brake disc (8) splined with the differential gear shaft (3) is pressed against the cam plate (7) by means of the cam mechanism incorporating steel balls (2).
Page 315 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] DISASSEMBLING AND ASSEMBLING ................5-S6 [3] SERVICING .........................5-S10 KiSC issued 05, 2012 A...
Page 316: Troubleshooting
B1830,B2230,B2530,B3030, WSM BRAKES 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Uneven Braking Brake pedal free travel unevenly adjusted Adjust 5-S4 Force Brake disc worn Replace 5-S8 Cam plate warped Replace 5-S9 Brake Drags Brake pedal free travel too small...
Page 317: Servicing Specifications
B1830,B2230,B2530,B3030, WSM BRAKES 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Brake Pedal Free Travel 30 to 40 mm – 1.18 to 1.57 in. Difference of 0 mm – Stroke 0 in. (R.H. and L.H.) Parking Brake Free Travel 4 to 5 notches –...
Page 318 Rear wheel cotter setting bolt and nut 123 to 147 12.6 to 15.0 91 to 108 [B1830, B2230, B2530] Rear wheel hub mounting nut [B1830, B2230, B2530] 108 to 125 11.0 to 12.8 80 to 93 Rear axle case mounting bolt (M10) 39.3 to 44.1...
Page 319: Checking, Disassembling And Servicing
B1830,B2230,B2530,B3030, WSM BRAKES 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING Adjusting Brake Pedal Free Travel CAUTION • Stop the engine and chock the wheels before checking brake pedal. • The difference between the right and left pedal plays must be equal.
Page 320 B1830,B2230,B2530,B3030, WSM BRAKES Checking Parking Brake Lever Travel 1. Pull the parking brake lever (1) to the parking position while counting the ratchet sound made by the parking brake lever (1). 2. If the counted ratchet sound is not within the factory specification, adjust the parking brake lever travel.
Page 321: Disassembling And Assembling
B1830,B2230,B2530,B3030, WSM BRAKES [2] DISASSEMBLING AND ASSEMBLING Separating Brake Pedal (1) Brake Pedal Shaft (6) Brake Pedal R.H. (11) Pin (16) Clevis Pin (2) Clutch Pedal (7) External Snap Ring (12) Brake Rod L.H. (17) Parking Brake Arm Shaft (3) Clevis Pin...
Page 322 B1830,B2230,B2530,B3030, WSM BRAKES Draining Transmission Oil 1. Refer to "TRANSMISSION" section. 9Y1210003BRS0007US0 Rear Axle Case 1. Refer to "REAR AXLE" section. 9Y1210003BRS0008US0 Differential Lock Clutch and Final Gear 1. Remove the spring (1). 2. Remove the differential lock clutch (3) and the differential shift fork (2).
Page 323 B1830,B2230,B2530,B3030, WSM BRAKES Brake Disks, Brake Plates and Brake Shaft 1. Remove the external cir-clip (6), and remove the brake disks (4) and the brake plates (5). 2. Remove the bearing holder (3) and the ball bearing (2). (When reassembling) NOTE •...
Page 324 B1830,B2230,B2530,B3030, WSM BRAKES Brake Cam Plate and Brake Cam Lever 1. Remove the brake cam plate (1) and the balls (2). (When reassembling) • Apply grease to the balls (2). • If O-ring (4) is defective, change it. • Install the brake cam lever (3) to the brake cam plate (1) securely.
Page 325: Servicing
B1830,B2230,B2530,B3030, WSM BRAKES [3] SERVICING Brake Cam Lever Movement 1. Move the brake cam lever by hand to check the movement. 2. If the movement is heavy, refine the brake cam with emery paper. 9Y1210003BRS0013US0 Cam Plate Flatness and Bearing Holder Wear 1.
Page 326: Front Axle
FRONT AXLE KiSC issued 05, 2012 A...
Page 327 MECHANISM CONTENTS 1. STRUCTURE..........................6-M1 [1] 4 WHEEL DRIVE MODEL ....................6-M1 KiSC issued 05, 2012 A...
Page 328 B1830,B2230,B2530,B3030, WSM FRONT AXLE 1. STRUCTURE [1] 4 WHEEL DRIVE MODEL (1) Axle (6) Bevel Gear (11T) (11) Spiral Bevel Gear (20T) (16) Spiral Bevel Pinion Shaft (2) Axle Flange (7) Differential Yoke Shaft, L.H. (12) Differential Yoke Shaft, R.H.
Page 329 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 [2] DISASSEMBLING AND ASSEMBLING ................6-S5 (1) Separating Front Axle Assembly ..................6-S5 (2) Disassembling Front Axle Assembly ................6-S6 [3] SERVICING .........................6-S12 KiSC issued 05, 2012 A...
Page 330: Troubleshooting
B1830,B2230,B2530,B3030, WSM FRONT AXLE 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Front Wheels Wander Tire pressure uneven Adjust G-66 to Right or Left Improper toe-in adjustment (improper alignment) Adjust G-31, 6-S4, 6-S4 Clearance between front axle case boss and...
Page 331: Servicing Specifications
B1830,B2230,B2530,B3030, WSM FRONT AXLE 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Front Wheel Alignment Toe-in 0 to 10 mm – 0 to 0.39 in. Front Axle Rocking Force 50.0 to 100.0 N – 5.1 to 10.2 kgf 12.8 to 25.5 lbf...
Page 332 B1830,B2230,B2530,B3030, WSM FRONT AXLE 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts: See page "5. TIGHTENING TORQUES" on page G-10.) Item N·m kgf·m lbf·ft Front wheel mounting bolt and nut 77.0 to 90.0...
Page 333: Checking, Disassembling And Servicing
B1830,B2230,B2530,B3030, WSM FRONT AXLE 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING Toe-in 1. Inflate the tires to the specified pressure. 2. Turn the front wheels straight ahead. 3. Measure the toe-in ((B) - (A)). 4. If the measurement is not within the factory specifications, adjust the tie-rod length.
Page 334: Disassembling And Assembling
NOTE • After ten minutes, check the oil level again, add oil to prescribed level. • Use KUBOTA SUPER UDT fluid or SAE 80, 90 gear oil. Refer to "4. LUBRICANTS, FUEL AND COOLANT" on page G-8. 4.7 L Front axle case oil Capacity 5.0 U.S.qts...
Page 335: Disassembling Front Axle Assembly
B1830,B2230,B2530,B3030, WSM FRONT AXLE Front Axle Holder and Front Axle 1. Place the disassembling stand under the front axle. 2. Remove the front axle holder mounting bolts (1). 3. Separate the front axle holders (2), (3). 4. Separate the front axle from the front axle frame.
Page 336 B1830,B2230,B2530,B3030, WSM FRONT AXLE Bevel Gear Case 1. Remove the bevel gear case mounting screws. 2. Remove the bevel gear case (2) and front gear case (1) as a unit from the front axle case (4). (When reassembling) • Apply grease to the O-ring (3) and take care not to damage it.
Page 337 (1) Axle Flange (5) Internal Cir-clip (2) Bevel Gear Shaft (6) Bevel Gear Case B1830, B2230, B2530: 9T (7) Front Gear Case B3030: 7T (8) Ball Bearing (3) External Cir-clip (9) Bevel Gear Case Oil Seal...
Page 338 1.2 mm (0.047 in.) 1.4 mm (0.055 in.) (1) Bevel Gear Case (4) Shim (2) Bevel Gear (16T) (5) Internal Cir-clip (3) Bevel Gear (6) Ball Bearing B1830, B2230, B2530: 10T (7) Ball Bearing B3030: 11T 9Y1210003FBS0014US0 6-S9 KiSC issued 05, 2012 A...
Page 339 0.2 mm (0.008 in.): Parts No. 66621-1524-0 0.3 mm (0.01 in.): Parts No. 67211-1499-0 (1) Ball Bearing (4) Axle (2) Bevel Gear (5) Ball Bearing B1830, B2230, B2530: 38T (6) Axle Flange B3030: 41T (7) Oil Seal (3) Collar (8) Shim...
Page 340 B1830,B2230,B2530,B3030, WSM FRONT AXLE Spiral Bevel Pinion Shaft and Differential Gear Assembly 1. Remove the oil seal from the front axle case (5). 2. Remove the internal cir-clip (2) and the collar (3). 3. Tap out the spiral bevel pinion shaft (4) to the rear side.
Page 341: Servicing
B1830,B2230,B2530,B3030, WSM FRONT AXLE [3] SERVICING Clearance between Differential Case and Differential Pinion 1. Measure the differential pinion boss O.D. with an outside micrometer. 2. Measure the differential case bore I.D. with a cylinder gauge, and calculate the clearance. 3. If the clearance exceeds the allowable limit, replace faulty parts.
Page 342 4.1 mm (0.161 in.) 4.2 mm (0.165 in.) 4.4 mm (0.173 in.) 4.6 mm (0.181 in.) (1) Spiral Bevel Gear (4) Spiral Bevel Pinion Shaft B1830, B2230, B2530: 23T B1830, B2230, B2530: 10T B3030: 20T B3030: 11T (2) Solder Wire (5) Adjusting Collar...
Page 343 1.0 mm (0.039 in.) 1.2 mm (0.047 in.) 1.4 mm (0.055 in.) • Tooth contact: More than 35% (1) Bevel Gear (16T) (3) Shim (2) Bevel Gear B1830, B2230, B2530: 10T B3030: 11T 9Y1210003FBS0022US0 6-S14 KiSC issued 05, 2012 A...
Page 344 B1830,B2230,B2530,B3030, WSM FRONT AXLE Clearance between Front Axle Case Bosses and Bracket Bushing 1. Measure the front axle case bosses O.D. with an outside micrometer. 2. Measure the bracket Bushing I.D. with a cylinder gauge, and calculate the clearance. 3. If the clearance exceeds the allowable limit, replace the bracket bushing.
Page 345 STEERING KiSC issued 05, 2012 A...
Page 346 MECHANISM CONTENTS 1. HYDRAULIC CIRCUIT ....................... 7-M1 2. STEERING CONTROLLER......................7-M2 3. STEERING CYLINDER ......................7-M3 KiSC issued 05, 2012 A...
Page 347 B1830,B2230,B2530,B3030, WSM STEERING 1. HYDRAULIC CIRCUIT The model is provided with a full hydrostatic power steering. In the hydrostatic power steering, the steering control is connected to the steering cylinder with only the hydraulic piping. Accordingly, it does not have mechanical transmitting parts such as steering gear, pitman arm, drag link, etc..
Page 348 B1830,B2230,B2530,B3030, WSM STEERING 2. STEERING CONTROLLER The steering controller consists of a control valve (4) and a metering device (3). 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 349 B1830,B2230,B2530,B3030, WSM STEERING 3. STEERING CYLINDER (1) Rod (3) Rod Cover (5) Piston Seal (7) O-ring (2) Dust Seal (4) U gasket (6) Cylinder Tube The steering cylinder is single piston both rod double-acting type. This steering cylinder is installed parallel to the front axle and connected to tie-rods.
Page 350 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..........................7-S4 (1) Relief Valve ........................7-S4 [2] DISASSEMBLING .........................7-S5 (1) Separating Power Steering Controller ................7-S5 (2) Power Steering Controller ....................7-S6 (3) Power Steering Cylinder....................7-S7 [3] SERVICING ...........................7-S9 (1) Power Steering Cylinder....................7-S9 KiSC issued 05, 2012 A...
Page 351: Troubleshooting
B1830,B2230,B2530,B3030, WSM STEERING 1. TROUBLESHOOTING Reference Symptom Probable Cause Solution Page Cannot Be Steered Steering controller malfunctioning Replace 7-S6 Pipe broken Replace 7-S5 Hard Steering Power steering oil improper Change with specified Hydraulic pump malfunctioning Replace 8-S11 Steering controller malfunctioning...
Page 352: Servicing Specifications
B1830,B2230,B2530,B3030, WSM STEERING 2. SERVICING SPECIFICATIONS POWER STEERING BODY Item Factory Specification Allowable Limit Relief Valve Setting Pressure 11.9 to 12.8 MPa – 121 to 131 kgf/cm 1726 to 1856 psi POWER STEERING CYLINDER Item Factory Specification Allowable Limit Steering Cylinder I.D.
Page 353 B1830,B2230,B2530,B3030, 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 "5. TIGHTENING TORQUES" on page G-10.) Item N·m kgf·m lbf·ft Power steering hose for power steering cylinder 24.0 to 28.0...
Page 354: Checking, Disassembling And Servicing
B1830,B2230,B2530,B3030, WSM STEERING 4. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING (1) Relief Valve Relief Valve Operating Pressure 1. Disconnect the power steering hose L.H. (or R.H.) from steering the power steering cylinder, and set a pressure gauge and cable. (Reference) •...
Page 355: Disassembling
B1830,B2230,B2530,B3030, WSM STEERING [2] DISASSEMBLING (1) Separating Power Steering Controller Steering Wheel, Meter Panel Bonnet and Fuel Tank Refer to "TRANSMISSION" section. 9Y1210003STS0005US0 Steering Post Assembly 1. Remove the center beam (1). 2. Disconnect the power steering hoses (4) from the power steering controller (2).
Page 356 B1830,B2230,B2530,B3030, WSM STEERING (2) Power Steering Controller Power Steering Controller 1. Remove the steering controller mounting bolts (2) from the steering post. 2. Remove the bolt from the universal joint (4). 3. Remove the power steering controller (1) from the steering post.
Page 357: Power Steering Cylinder
B1830,B2230,B2530,B3030, WSM STEERING (3) Power Steering Cylinder Steering Wheel, Meter Panel Bonnet and Fuel Tank Refer to "TRANSMISSION" section. 9Y1210003STS0008US0 Tie-rod End 1. Remove the slotted nut (4) and remove the tie-rod end (3). 2. Remove the front axle brackets (1), (2).
Page 358 B1830,B2230,B2530,B3030, WSM STEERING Power Steering Cylinder CAUTION • Since power steering cylinder is full of high-pressured steering oil, high-pressured oil is injected out from hose adopters by pushing piston rods. • This injected oil can penetrate the skin or eyes causing serious injury.
Page 359: Servicing
B1830,B2230,B2530,B3030, WSM STEERING [3] SERVICING (1) Power Steering Cylinder Steering Cylinder I.D. 1. Measure the steering cylinder I.D. with a cylinder gauge. 2. If the cylinder I.D. exceed the allowable limit, replace the cylinder barrel. 40.000 to 40.062 mm Factory specification 1.57480 to 1.57724 in.
Page 360: Hydraulic System
HYDRAULIC SYSTEM KiSC issued 05, 2012 A...
Page 361 MECHANISM CONTENTS 1. HYDRAULIC CIRCUIT ....................... 8-M1 2. HYDRAULIC PUMP........................8-M2 3. HYDRAULIC BLOCK........................8-M3 4. POWER STEERING........................8-M4 [1] HYDRAULIC CIRCUIT ......................8-M4 [2] POWER STEERING CONTROLLER ................... 8-M5 [3] STEERING CYLINDER ......................8-M6 5. INDEPENDENT PTO........................8-M7 [1] HYDRAULIC CIRCUIT ......................8-M7 [2] INDEPENDENT PTO CONTROL VALVE ................
Page 362: Hydraulic Circuit
B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM 1. HYDRAULIC CIRCUIT (1) Hydrostatic Transmission (6) Bi-Speed Turn Clutch (11) Oil Filter (17) Control Valve (HST) (7) Power Steering Controller (12) Hydraulic Pump (18) Remote Control Valve (2) Relief Valve (8) Power Steering Cylinder (13) Hydraulic Block...
Page 363 B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM 2. HYDRAULIC PUMP The hydraulic pump is composed of the casing (1), side plate (4), and two spur gears (drive gear (3) and driven gear (2)) that are in mesh. Hydraulic pump is driven by the fuel camshaft.
Page 364 B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM 3. HYDRAULIC BLOCK The hydraulic block type outlet is located at the right hand side of the engine. This hydraulic block type outlet is provided to take power out from the tractor to operate the hydraulic cylinders on the implement, such as front end loader, front blade and so on.
Page 365: Hydraulic Circuit
B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM 4. POWER STEERING [1] HYDRAULIC CIRCUIT Hydraulic oil for power steering is forced by the hydraulic pump (6). Hydraulic oil in the power steering controller is controlled by the steering wheel. The controlled oil is forced to the power steering cylinder.
Page 366 B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM [2] POWER STEERING CONTROLLER Power Steering controller (1) controls hydraulic oil from hydraulic pump. Power steering controller is connected to hydraulic pump, power steering cylinder, and oil cooler. Since this power steering controller is a complete...
Page 367: Steering Cylinder
B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM [3] STEERING CYLINDER Steering cylinder is located at the front side of the front axle case (1). Steering cylinder is connected to the front gear cases. Power steering hoses from power steering controller are connected to the adaptors of the steering cylinder.
Page 368: Independent Pto
B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM 5. INDEPENDENT PTO [1] HYDRAULIC CIRCUIT (1) PTO Clutch (9) Hydraulic Pump (for HST, (2) Independent PTO Lever Power Steering and (3) Independent PTO Control Independent PTO) Valve (10) Oil Filter Cartridge (4) Relief Valve (11) Hydraulic Pump...
Page 369: Independent Pto Clutch
B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM [3] INDEPENDENT PTO CLUTCH Independent PTO clutch (2) is located behind the HST pump shaft (1) in the transmission case. Independent PTO clutch (2) is operated with pressured hydraulic oil forced from the independent PTO control valve (3).
Page 370: Independent Pto Lever "Engaged
B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM [4] INDEPENDENT PTO LEVER “ENGAGED” When the independent PTO lever (1) is shifted to the "ENGAGED" position, the PTO arm (3) is turned to "ON" position. Hydraulic oil from P port flows through oil passage (7) of the PTO arm (3), oil passage S1 in the transmission case (6) and oil passage S2 in the PTO clutch shaft (5) to the PTO clutch (4).
Page 371: Independent Pto Lever "Disengaged
B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM [5] INDEPENDENT PTO LEVER “DISENGAGED” When the independent PTO lever (1) is shifted to the "DISENGAGED" position, the PTO arm(3) is turned to "OFF" position. Hydraulic oil is stopped at the PTO arm (3). This oil flows to the HST port.
Page 372: Three Points Hydraulic System
6. THREE POINTS HYDRAULIC SYSTEM [1] HYDRAULIC CIRCUIT Two hydraulic pumps (4), (6) are installed in the B1830, B2230, B2530 and B3030. Hydraulic oil is forced from hydraulic pump (6) to the hydraulic block (7), relief valve (8), rear outlet (9) and position control valve (12).
Page 373 The valve closes again when enough oil is released to drop pressure below the valve setting pressure. (Reference) [B1830, B2230, B2530] • Relief valve setting pressure 15.5 to 16.5 MPa 158 to 168 kgf/cm 2248 to 2393 psi •...
Page 374: Position Control Valve
B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM [3] POSITION CONTROL VALVE This position control valve (2) is located under the hydraulic cylinder block (1). This control valve is mechanically connected to the position control lever with linkage. This control valve is also mechanically connected to the lift arm with a feed back rod.
Page 375 B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM Neutral Oil forced into the control valve through P port pushes and opens the unload valve (3), and opens the unload valve (3), and then returns to the transmission case through T1 port. Oil behind the unload valve (3) returns to the transmission case through the groove of the spool (2).
Page 376 B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM Shockless mechanism operating (Lift to Neutral) When the implement begins to lift up, the feedback rod connected to the lift arm pushes back the spool (2) to near "NEUTRAL" position. When the implement lifts up near the "NEUTRAL"...
Page 377: Feedback Linkage For Position Control
B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM [4] FEEDBACK LINKAGE FOR POSITION CONTROL When the position control lever is moved to rearward to lift the implement, the spool of the position control valve is pushed in to form a lifting circuit by the motions of the control lever arm, the control lever shaft (3), the connecting arm (7) and the lever (8).
Page 378: Remote Control Valve
B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM 7. REMOTE CONTROL VALVE Neutral Pressure-fed oil from the hydraulic pump is delivered into the P port, and flows to the rear hydraulic outlet through BY port. At this time, oil from A port to the T port is blocked by the mechanical check valve (Poppet (1)).
Page 379: Rear Hydraulic Outlet
B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM 8. REAR HYDRAULIC OUTLET (1) Auxiliary Control Valve (2) Rear Hydraulic Outlet (3) Hydraulic Cylinder Body To Implement From Implement (Drain) From Hydraulic Pump To Transmission Case To Position Control Valve The rear hydraulic outlet is located at the right hand side of the hydraulic cylinder body.
Page 380 SERVICING CONTENTS 1. TROUBLESHOOTING.........................8-S1 2. SERVICING SPECIFICATIONS ....................8-S3 3. TIGHTENING TORQUES......................8-S5 4. CHECKING, DISASSEMBLING AND SERVICING ..............8-S6 [1] CHECKING AND ADJUSTING....................8-S6 (1) Hydraulic Pump .......................8-S6 (2) Independent PTO Control Valve..................8-S8 (3) 3-Points Hitch Relief Valve ....................8-S9 (4) Lift Arm ..........................8-S10 [2] DISASSEMBLING AND ASSEMBLING ................8-S11 (1) Hydraulic Pump ......................8-S11 (2) Power Steering Controller .....................8-S12...
Page 381: Troubleshooting
B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM 1. TROUBLESHOOTING POWER STEERING Reference Symptom Probable Cause Solution Page Front Wheels Air in power steering circuit Bleed air 7-S4 Vibration Hard Steering Transmission fluid improper or insufficient Change 8-S13 Oil leak from pipe or hose joint...
Page 382 B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM Reference Symptom Probable Cause Solution Page PTO Clutch Drags Brake plate excessively worn Replace 3-S61, 3-S61 Return spring weaken or broken Replace 3-S61, 3-S61 Deformation of return plate or steel plate Replace 3-S61, 3-S61 3-POINTS HITCH...
Page 383: Servicing Specifications
Allowable Limit Pump Delivery at Engine rated rpm, At no pressure Above 20.5 L/min. – Oil Temperature 50 °C, 122 °F 5.4 U.S.gals/min. [B1830, B2230, B2530] 4.5 Imp.gals/min. At rated pressure Above 19.4 L/min. – 5.1 U.S.gals/min. 4.3 Imp.gals/min. Pump Delivery at Engine 2600 min...
Page 384 B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM Item Factory Specification Allowable Limit Hydraulic Arm Shaft to Bushing Clearance 0.020 to 0.110 mm 0.30 mm 0.0008 to 0.0043 in. 0.0118 in. Hydraulic Arm Shaft (R.H.) O.D. 37.925 to 37.950 mm – 1.4931 to 1.4941 in.
Page 385 B1830,B2230,B2530,B3030, 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 "5. TIGHTENING TORQUES" on page G-10.) Item N·m kgf·m lbf·ft...
Page 386: Checking, Disassembling And Servicing
(1) Hydraulic Pump Flowmeter Connecting and Test Preparation IMPORTANT • When using a flowmeter other than KUBOTA specified flowmeter (Code No: 07916-52792), be sure to use the instructions with that flowmeter. • In this hook-up, there is no relief valve.
Page 387 3. Read and note the pump delivery at no pressure. 4. Slowly close the loading valve to increase pressure approx. 15.2 MPa (155 kgf/cm , 2204 psi) [B1830, B2230, B2530] or 15.9 MPa (162 kgf/cm , 2305 psi) [B3030]. 5. Read and note the pump flow at rated pressure.
Page 388 B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM (2) Independent PTO Control Valve Independent PTO Control Valve Operating Pressure 1. Remove the plug (2) with a hexagon wrench. 2. Install the adapter (3) to the independent PTO control valve (1). 3. Connect the cable and the pressure gauge to the adapter (3).
Page 389 15.0 to 16.0 MPa tion B3030 153 to 163 kgf/cm 2175 to 2320 psi Condition [B1830, B2230, B2530] • Engine rated speed 2700 min (rpm) • Oil temperature 50 °C (122 °F) [B3030] • Engine rated speed 2600 min (rpm) •...
Page 390: Lift Arm
B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM (4) Lift Arm Lift Arm Free Play 1. Set the position control lever (1) to the lowest position. 2. Start the engine, and set at the idling speed. 3. Move the position control lever (1) to the uppermost position.
Page 391: Disassembling And Assembling
B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM [2] DISASSEMBLING AND ASSEMBLING (1) Hydraulic Pump Removing Hydraulic Pump 1. Open the bonnet then remove the front grille, side cover (R.H.) and disconnect the battery grounding cord. 2. Disconnect the connector of the engine stop solenoid and accelerator rod.
Page 392: Power Steering Controller
B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM (2) Power Steering Controller Power Steering Controller 1. Remove the steering wheel. 2. Remove the bonnet, panel board, panel under cover. 3. Disconnect the power steering hoses and the hydraulic pipes. 4. Remove the steering post as an assembly.
Page 393: 3-Points Hitch: Hydraulic Cylinder Separating
2. Remove the drain plug from the transmission case. (When reassembling) • Check the O-rings. • It the O-ring is damaged, replace it. • Install the o-rings to the groove securely. B1830, B2230, B2530 15 L Manual transmission 4.0 U.S.gals (without Bi-Speed 3.3 Imp.gals...
Page 394 B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM 3-Point Hitch 1. Remove the top link (4). 2. Remove the lift rods (2). 3. Remove the lower links (1). 4. Remove the check chain (3). 5. Remove the hitch (5). NOTE • Before reassembling the lower link pin (8), remove the set bolt (6) and lock nut (7) of the lower link pin.
Page 395 B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM Removing Hydraulic Cylinder Assembly (ROPS, Manual Transmission Model) 1. After removing the fender rear cover, remove the top link brackets. 2. Remove the hydraulic cylinder mounting bolts (4), (7). 3. Disconnect the hydraulic delivery pipe. 4. Disconnect the wiring harness (3) from the hydraulic cylinder (1).
Page 396 B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM Removing Hydraulic Cylinder Assembly (CABIN, HST Model) 1. Remove the fender rear cover (3), the fenders (1), (4) and the seat under cover (2). 2. Remove the top link bracket and the hydraulic cylinder mounting bolts.
Page 397: 3-Points Hitch: Hydraulic Cylinder
B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM Removing Remote Control Valve and Rear Hydraulic Outlet 1. Disconnect the Pipe (2). 2. Remove the remote control valve mounting bolts (3). 3. Remove the remote control valve (1). 4. Remove the hose (4). 5. Remove the rear hydraulic outlet mounting bolts (6).
Page 398 B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM Control Valve NOTE • When the control valve is installed in the hydraulic cylinder, the hexagon wrench is not aligned straight to the hexagon bolt without pushing the spool as shown in the picture. 1. Push the spool (1) into the control valve (3).
Page 399 B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM Relief Valve 1. Remove the plug (2), and draw out the washer (7), the shim (6), the poppet (4) and the valve seat (3). (When reassembling) • Take care not to damage the O-ring. 49.1 to 68.6 N·m...
Page 400 B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM Hydraulic Piston 1. Inject the compressed air into the hydraulic cylinder, and take out the hydraulic piston (1). (When reassembling) • Take care not to damage the O-ring (3) and backup ring (2). • Apply transmission fluid to the O-ring.
Page 401 B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM Disassembling Position Control Valve 1. After removing the control valve, disassemble the component parts as shown in the picture. (When reassembling) • Readjust the length "L" of the adjusting bolt. (1) External Cir-clip (15) Unload Poppet...
Page 402: Remote Control Valve
B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM (6) Remote Control Valve Poppet and Piston (Mechanical Check Valve) 1. Remove the plug 1 (4) and draw out the spring (7), ball guide (3), balls (1), (6), poppet (2) and piston (5). (When reassembling) • Take care not to damage the O-ring.
Page 403: Servicing
B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM [3] SERVICING Clearance between Tip of Gear Tooth and Casing 1. Measure the clearance between gear and casing at several points with feeler gauge. 2. If the clearance exceeds the allowable limit, replace the assembly. Clearance between tip of 0.15 mm...
Page 404 B1830,B2230,B2530,B3030, WSM HYDRAULIC SYSTEM Clearance between Hydraulic Arm Shaft and Bushing 1. Measure the hydraulic arm shaft O.D. with an outside micrometer. 2. Measure the bushing I.D. with a cylinder gauge, and calculate the clearance. 3. If the clearance exceeds the allowable limit, replace the bushing.
Page 405 ELECTRICAL SYSTEM KiSC issued 05, 2012 A...
Page 406 MECHANISM CONTENTS 1. WIRING DIAGRAM (WITHOUT OPC)..................9-M1 [1] ROPS ........................... 9-M1 [2] CABIN........................... 9-M2 2. WIRING DIAGRAM (WITH OPC) ....................9-M3 [1] ROPS ........................... 9-M3 (1) HST Type ........................9-M3 (2) Manual Type........................9-M4 [2] CABIN........................... 9-M5 (1) HST Type ........................9-M5 (2) Manual Type........................
Page 407: Wiring Diagram (Without Opc)
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM 1. WIRING DIAGRAM (WITHOUT OPC) [1] ROPS 9-M1 KiSC issued 05, 2012 A...
Page 408 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM [2] CABIN 9-M2 KiSC issued 05, 2012 A...
Page 409: Rops
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM 2. WIRING DIAGRAM (WITH OPC) [1] ROPS (1) HST Type 9-M3 KiSC issued 05, 2012 A...
Page 410: Manual Type
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM (2) Manual Type 9-M4 KiSC issued 05, 2012 A...
Page 411: Cabin
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM [2] CABIN (1) HST Type 9-M5 KiSC issued 05, 2012 A...
Page 412: Manual Type
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM (2) Manual Type 9-M6 KiSC issued 05, 2012 A...
Page 413: Starting System
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM 3. STARTING SYSTEM [1] WITHOUT OPC (1) Starter Relay (4) Starter (7) Body Earth (10) Safety Switch (2) Engine Stop Solenoid (5) Battery (8) Starter Switch (11) Glow Plug Indicator (3) Glow Plug (6) Slow Blow Fuse...
Page 414: Key Stop Solenoid
ELECTRICAL SYSTEM [2] WITH OPC B1830, B2230, B2530, B3030 tractor equipped Operator Presence Control (OPC) system. This system will automatically stop the engine when operator stands up from the seat while shifting the independent PTO lever (or PTO ON-OFF lever), the PTO select lever (with MID PTO), the HST pedal (or shuttle shift lever) and the parking brake lever.
Page 415 ELECTRICAL SYSTEM Operator Presence Control (OPC) System B1830, B2230, B2530, B3030 are configured with an "Operator Presence Control (OPC)" system to control engine starting automatically stopping. This OPC system mainly consists of controller and engine starting / stopping control switches such as the HST pedal switch (or shuttle shift lever switch), the seat switch, the independent PTO lever switch (or PTO ON-OFF lever switch), the PTO select lever switch (with MID PTO) and the parking brake switch.
Page 416 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM OPC Controller Controller (1) is located inside the panel board. A current from the main switch (12), safety switches flows to controller (1). Controller (1) receives current as data, processes the data, and sends out current computing results to starter motor (8), key stop solenoid relay (9), and key stop solenoid (10).
Page 417 (1) Engine Starting Conditions and Automatic Engine Stop When the following conditions become complete, electric current (12 V) reaches starter S terminal through operator presence controller main switch and the engine can be started. 9Y1210003ELM0043US0 B1830, B2230, B2530, B3030 (With Mid PTO) HST Pedal PTO Select Independent...
Page 418 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM B1830, B2230, B2530, B3030 (Without Mid PTO) HST Pedal Switch Independent PTO Parking Brake or Shuttle Shift Seat Switch Engine Start Key Stop Output Lever Switch Switch Lever Switch Neutral Disengaged Lock Engine Stop Cannot Start...
Page 419 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM [3] STARTER (1) Housing (2) Magnetic Switch (3) Overrunning Clutch (4) Drive Lever (5) Internal Gear (6) Gear Shaft (7) Planetary Gear (8) Armature Shaft (9) Yoke (10) Brush Holder (11) Rear End Frame The starter is a reduction type.
Page 420 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM [4] GLOW PLUG This plug is a two-material type QGS (Quick Glow System) quick temperature rise, self-controlling function as well as excellent durability. The heater (4) connected in series to the heater (3), which also functions as the resistor, is incorporated in the sheath tube (1) of the super glow plug.
Page 421 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM HST Pedal Switch (HST Model) and PTO ON-OFF Lever Switch (Manual Transmission Model) [HST Model] This switch locates at the neutral switch stay. This switch is a push type. This switch detects the position of the HST pedal.
Page 422 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM Independent PTO Lever Switch (HST Model) and Shuttle Shift Lever Switch (Manual Transmission Model) [HST Model] This switch locates at the top of the independent PTO control valve. This switch is a push type. This switch detects the independent PTO valve operating.
Page 423 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM Parking Brake Switch (with OPC) This switch is located on the axle case L.H. When the parking brake switch is not in neutral position, the parking brake switch is pushed in and electric circuit is opened.
Page 424 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM PTO Select Lever Switch (IF Equipped) (with OPC) This switch locates at transmission case (4). This switch is a push type. This Switch detects the position of the PTO lever. When the PTO shift lever is at "REAR PTO"...
Page 425: Charging System
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM 4. CHARGING SYSTEM Charging System (Without OPC) (1) Fuse (3) Battery (5) Starter Switch (7) Joint Connector (2) Alternator (4) Slow Blow Fuse (6) Charge Lamp The charging system supplies electric power for various electrical devices and also charges the battery while the engine runs.
Page 426 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM Charging System (With OPC) (1) Relay (AC1) (4) Joint Connector (7) Battery (10) Main Switch (2) Relay (AC2) (5) Alternator (8) Slow Blow Fuse (11) Change Lamp (3) Relay (6) Starter Motor (9) OPC Controller (12) Fuse The charging system supplies electric power for various electrical devices and also charges the battery while the engine runs.
Page 427: Ic Regulator
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM [1] ALTERNATOR A compact alternator with an IC regulator is used, having the following characteristics: • Approximately 26 % lighter and 17 % smaller than a standard alternator. • Cooling performance safety have been improved by combining the cooling fan with the rotor and incorporating the fan / rotor unit inside the alternator.
Page 428: Lighting System
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM 5. LIGHTING SYSTEM Lightning System (Without OPC) (1) Beacon (7) Alternator (12) Starter Switch (17) Brake Lamp Switch (2) Head Light (8) Oil Switch (13) Trailer Socket (18) License Lamp (3) Combination Light (9) Battery (14) Combination Switch...
Page 429 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM Lightning System (With OPC) (1) Relay (AC1) (9) Relay (16) Slow Blow Fuse (23) Broke Lamp Switch (2) Relay (AC2) (10) Beacon Switch (17) Water Temperature Sensor (24) Licence Lamp R.H. (3) Head Light L.H. (11) Hazard Switch (18) Earth (25) Licence Lamp L.H.
Page 430 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM (Continued) The lighting system consists of main switch, combination switch, hazard light switch, position light switch, brake light switch, head lights, combination lights, brake lights, etc.. 9Y1210003ELM0019US0 9-M24 KiSC issued 05, 2012 A...
Page 431: Head Light
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM [1] HEAD LIGHT The head light switch, which forms a combination switch with the turn signal light switch and horn switch, has three positions; OFF, LOW-BEAM and HIGH-BEAM. Current passes through the light circuit as shown in the figure above.
Page 432 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM Combination Switch Combination switch consist of head light switch, turn signal light switch and horn switch. Head Light Switch Turn Signal Light Switch Horn Switch (1) Head Light Switch (3) Horn Switch (2) Turn Signal Light Switch...
Page 433: Hazard Light
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM [3] HAZARD LIGHT The hazard switch has two position; ON and OFF. When the hazard switch is turned to ON, the hazard lights and indicator lamps are blinked as shown in the figure above. 9Y1210003ELM0023US0 Hazard Switch This is a pushing type switch to turn on the hazard lights.
Page 434: Position (Parking) Light
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM [4] POSITION (PARKING) LIGHT The position (parking) light switch is combined with the head light switch of the combination switch. The position lights are lighted up by the head light switch. 9Y1210003ELM0025US0 [5] BRAKE LIGHT The brake lights are lighted up by brake switch.
Page 435: Easy Checker
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM [6] EASY CHECKER™ To check the conditions of tractor easily before and during operation, Easy Checker™ combination of lamps on the Easy Checker™ board is provided. 9Y1210003ELM0028US0 Indication Items (1) Oil Pressure Lamp When the engine oil pressure is low, this lamp illuminates.
Page 436: Gauges
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM 6. GAUGES Gauges (Without OPC) (1) Fuse (4) Coolant Temperature Switch (5) Fuel Unit (Fuel Level Sensor) (8) Coolant Temperature Gauge (2) Battery (Coolant Temperature (6) Body Earth (9) Fuel Gauge (3) Slow Blow Fuse Sensor)
Page 437 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM Gauges (With OPC) (1) Starter Motor (4) Coolant Temperature Switch (6) Body Earth (10) Joint Connector (2) Battery (Coolant Temperature (7) Starter Switch (11) Fuse Box (3) Slow Blow Fuse Sensor) (8) Coolant Temperature Gauge (12) Relay (AC2)
Page 438: Fuel Quantity
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM [1] FUEL QUANTITY Fuel Level Sensor The remaining fuel quantity is detected by the fuel level sensor installed in the fuel tank and indicated on the fuel gauge. For detection, a float and a resistor are used.
Page 439 SERVICING CONTENTS 1. TROUBLESHOOTING.........................9-S1 2. SERVICING SPECIFICATIONS ....................9-S7 3. CHECKING, DISASSEMBLING AND SERVICING ..............9-S8 [1] CHECKING AND ADJUSTING....................9-S8 (1) Battery ..........................9-S8 (2) Main Switch ........................9-S10 (3) Starter Relay........................9-S13 (4) Key Stop Solenoid Relay (with OPC) ................9-S13 (5) Relay (AC1), Relay (AC2), Relay (with OPC)..............9-S14 (6) Glow Plug ........................9-S14 (7) OPC Controller ......................9-S15 (8) Key Stop Solenoid ......................9-S15...
Page 440: Troubleshooting
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM 1. TROUBLESHOOTING FUSE AND WIRING Reference Symptom Probable Cause Solution Page All Electrical Battery discharged or defective Recharge or replace G-24 Equipment Do Not Battery positive cable disconnected or improperly Repair or replace – Operate connected...
Page 441 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM Reference Symptom Probable Cause Solution Page Pre-heat indicator Battery discharged or defective Recharge or replace G-24 Lamp Does Not Light Slow blow fuse blown Replace G-47 to When Main Switch Is G-50 in Pre-heat Position Wiring harness disconnected or improperly Repair or replace –...
Page 442 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM Reference Symptom Probable Cause Solution Page Starter Motor Does Solenoid fuse blown (30 A) Replace G-47, Not Operate G-50 Key stop solenoid defective Replace 9-S15, 9-S15 Key stop solenoid relay defective Replace 9-S13 Seat switch defective...
Page 443 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM CHARGING SYSTEM Reference Symptom Probable Cause Solution Page Charging Lamp Does Fuse blown Replace G-47, Not Light when Main G-50 Switch is Turned ON Wiring harness disconnected or improperly Repair or replace – connected (between main switch AC terminal...
Page 444 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM Reference Symptom Probable Cause Solution Page Hazard Light (Tail Fuse blown Replace G-47 to Light) Does Not Light G-50 Bulb blown Replace G-51 to G-52 Wiring harness disconnected or improperly Repair or replace – connected Flasher unit defective...
Page 445 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM EASY CHECKER™ Reference Symptom Probable Cause Solution Page Oil Pressure Lamp Engine oil pressure too low Repair engine – Lights Up When Engine oil insufficient Replenish G-14 Engine Is Running Oil pressure switch defective Replace 9-S28...
Page 446: Servicing Specifications
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM 2. SERVICING SPECIFICATIONS STARTER Item Factory Specification Allowable Limit Commutator O.D. 28.0 mm 27.0 mm 1.102 in. 1.063 in. Difference of Less than 0.05 mm O.D.'s 0.02 mm 0.0020 in. 0.0008 in. Mica Undercut 0.60 mm 0.20 mm...
Page 447: Checking, Disassembling And Servicing
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM 3. 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 448 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM Battery Specific Gravity 1. Check the specific gravity of the electrolyte in each cell with a hydrometer. 2. When the electrolyte temperature differs from that at which the hydrometer was calibrated, correct the specific gravity reading following the formula mentioned in (Reference).
Page 449: Main Switch
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM (2) Main Switch Main Switch 1. Remove the steering wheel and the panel board (3). 2. Disconnect the 4P connector (2) and remove the main switch (1). 3. Perform the following checks. (1) Main Switch (3) Panel Board...
Page 450 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM Connector Voltage 1. Measure the voltage with a voltmeter across the connector B terminal (2) and chassis. 2. If the voltage differs from the battery voltage (11 to 14 V), the wiring harness is faulty. Connector B terminal –...
Page 451 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM 3) Main Switch Key at "PREHEAT" Position 1. Set and hold the main switch key at the PREHEAT position. 2. Measure the resistance with an ohmmeter across the B terminal and the 19 terminal, and measure the resistance across the B terminal and the AC terminal.
Page 452: Starter Relay
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM (3) Starter Relay Starter Relay (without OPC) 1. Open the panel board and remove the starter relay (1). 2. Apply battery voltage across 2 terminal and 4 terminal, and check for continuity across 1 terminal and 3 terminal.
Page 453: Relay (Ac1), Relay (Ac2), Relay (With Opc)
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM (5) Relay (AC1), Relay (AC2), Relay (with OPC) Relay (AC1), Relay (AC2), Relay (with OPC) 1. Open the panel board and remove the relay (1), (2), (3). 2. Apply battery voltage across 2 terminal and 4 terminal, and check for continuity across 1 terminal and 3 terminal.
Page 454: Opc Controller
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM (7) OPC Controller OPC Controller 1. Check the "Engine Starting Conditions" and "Automatic Engine Stop Conditions". (See page 9-M9, 9-M10.) 2. If the tractor does not operate appropriately, check all parts according to the "1.TROUBLESHOOTING" section.
Page 455: Safety Switch (Without Opc)
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM (9) Safety Switch (without OPC) Safety Switch Continuity 1. Disconnect the safety switch leads or couplers. 2. Connect the circuit tester to the safety switch leads. 3. Measure the resistance between leads. 4. If the safety switch is defective, replace it.
Page 456: Safety Switch (With Opc)
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM (10) Safety Switch (with OPC) [A] Manual (without Mid PTO) Safety Switch Continuity 1. Disconnect the safety switch leads or couplers. 2. Connect the circuit tester to the safety switch leads. 3. Measure the resistance between leads.
Page 457 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM [B] Manual (with Mid PTO) Safety Switch Continuity 1. Disconnect the safety switch leads or couplers. 2. Connect the circuit tester to the safety switch leads. 3. Measure the resistance between leads. 4. If the safety switch is defective, replace it.
Page 458 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM [C] HST (without Mid PTO) Safety Switch Continuity 1. Disconnect the safety switch leads or couplers. 2. Connect the circuit tester to the safety switch leads. 3. Measure the resistance between leads. 4. If the safety switch is defective, replace it.
Page 459 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM [D] HST (with Mid PTO) Safety Switch Continuity 1. Disconnect the safety switch leads or couplers. 2. Connect the circuit tester to the safety switch leads. 3. Measure the resistance between leads. 4. If the safety switch is defective, replace it.
Page 460: Starter
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM (11) Starter Motor Test CAUTION • Secure the starter to prevent it from jumping up and down while testing the motor. 1. Disconnect the battery negative cable from the battery. 2. Disconnect the battery positive cable and the leads from the starter M terminal.
Page 461: Combination Switch
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM (13) Combination Switch Combination Switch 1. Remove the meter panel, and disconnect the combination switch connector. 2. Remove the combination switch (1) and perform the following checks 1) to 8). (1) Combination Switch (6) T Terminal...
Page 462 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM 3) Head Light Switch Continuity when Setting Switch at "LOW BEAM" and "HIGH BEAM" Position 1. Set the light switch to the LOW BEAM position. 2. Measure the resistance with an ohmmeter across the B1 terminal (3) to the T terminal (6) and the B1 terminal (3) to the 1 terminal (7).
Page 463 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM 5) Turn Signal Light Switch Continuity When Setting Switch Knob at "RIGHT" Position 1. Set the turn signal light switch to the RIGHT position. 2. Measure the resistance with an ohmmeter across the B2 terminal (4) and R terminal (8) and across B2 terminal (4) and L terminal (9).
Page 464 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM 7) Horn Button Continuity when Not Pushing Button 1. Set the horn button to the OFF position. 2. Measure the resistance with an ohmmeter across the B3 terminal (5) and the H terminal (10). 3. If infinity is not indicated, the combination switch is faulty.
Page 465: Hazard Switch
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM (14) Hazard Switch Hazard Switch 1. Remove the meter panel and disconnect the 4P connector from hazard switch after disconnecting the battery negative code. 2. Remove the hazard switch. 3. Perform the following checking. (1) Hazard Switch...
Page 466: Flasher Unit
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM (15) Flasher Unit Supply Voltage to Flasher Unit 1. Disconnect the connector from the flasher unit. 2. Turn the main switch at ON position. 3. Measure the voltage between the terminal 12, 13 and chassis. 4. If the voltage differ from the battery voltage, the wiring harness is faulty.
Page 467: Easy Checker
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM (16) Easy Checker™ Easy Checker™ 1. Remove the panel board and disconnect the connector (1) from 2. Turn the main switch on. 3. Measure the voltage with a voltmeter across the terminal (Red / Yellow) and the earth terminal (Black).
Page 468 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM Monitor Lamp (for Charge, Engine Oil Pressure, Pre-heat, Illumination and Hazard) 1. After removing the panel board from tractor, remove the plate behind the panel. 2. Remove the each lamp. 3. Measure the lamp resistance. 4. If it is infinity, replace the lamp with new.
Page 469: Gauge
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM (17) Gauge Fuel Level Sensor 1) Sensor Continuity 1. Remove the fuel level sensor from the fuel tank. 2. Measure the resistance with an ohmmeter across the sensor terminal and its body. 3. If the reference values are not indicated, the sensor is faulty.
Page 470: Disassembling And Assembling
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM [2] DISASSEMBLING AND ASSEMBLING (1) Starter (1) Screw (2) Front Bracket (3) Magnetic Switch (4) Overrunning Clutch (5) Drive Lever (6) Internal Gear (7) Shaft (8) Planetary Gear (9) Shaft Assembly (10) Ball (11) Gasket (12) Yoke...
Page 471 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM Rear End Cover 1. Unscrew the three rear end cover screws and the B terminal nut, and remove the rear end cover. 9Y1210003ELS0049US0 Brush Holder 1. Unscrew the two screws holding the brush holder, and remove the brush holder (1).
Page 472 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM Rotor 1. Press out the rotor (1) from drive end frame (3). IMPORTANT • Take special care not to drop the rotor and damage the slip ring or fan, etc.. (1) Rotor (3) Drive End Frame...
Page 473: Servicing
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM [3] SERVICING (1) Starter Commutator and Mica 1. Check the contact face of the commutator for wear, and grind the commutator with emery paper if it is slightly worn. 2. Measure the commutator O.D. with an outside micrometer at several points.
Page 474: Alternator
B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM Armature Coil 1. Check the continuity between the commutator and armature coil core with an ohmmeter. 2. If it conducts, replace the armature. 3. Check the continuity between the segments of the commutator with an ohmmeter.
Page 475 B1830,B2230,B2530,B3030, WSM ELECTRICAL SYSTEM Slip Ring 1. Check the slip ring for score. 2. If scored, correct with an emery paper or on a lathe. 3. Measure the O.D. of slip ring with vernier calipers. 4. If the measurement is less than the allowable limit, replace it.
Page 476 CABIN KiSC issued 05, 2012 A...
Page 477 MECHANISM CONTENTS 1. OUTLINE OF AIR CONDITIONING SYSTEM................10-M1 [1] STRUCTURE ........................10-M1 [2] AIR FLOW .......................... 10-M3 [3] AIR CONTROL VENT ......................10-M4 [4] CONTROL PANEL ......................10-M5 [5] OPERATION ........................10-M6 2. REFRIGERATION SYSTEM ....................10-M10 [1] COMPRESSOR........................ 10-M11 (1) Scroll Type Compressor .....................
Page 478: Outline Of Air Conditioning System
B1830,B2230,B2530,B3030, WSM CABIN 1. OUTLINE OF AIR CONDITIONING SYSTEM [1] STRUCTURE (1) Heater Hose (Outside) (6) Inside Air Filter (10) Receiver (14) High Pressure Pipe (2) Heater (Inside) (7) Roof (11) Pressure Switch (15) Low Pressure Pipe (3) Water Valve...
Page 479 B1830,B2230,B2530,B3030, WSM CABIN (Continued) The machine is equipped with a thin large-capacity air conditioner with outside air intake. Air pulled from the inside air filter (6) as well as the outside air filter (5), passes through the roof (7) and reaches the air conditioner unit (16).
Page 480: Air Flow
B1830,B2230,B2530,B3030, WSM CABIN [2] AIR FLOW Air in the CAB and fresh air introduced into CAB flow as shown in the figure. Adjust the 7 air ports to obtain the desired condition. NOTE • Do not pour water directly into the fresh air port while washing the vehicle.
Page 481: Air Control Vent
B1830,B2230,B2530,B3030, WSM CABIN [3] AIR CONTROL VENT Front Air Outlet The front air outlets can be independently adjusted as required. To defrost the windshield, rotate the outlets toward the windshield. (1) Front Air Outlet (A) Windshield (B) Closed (C) Chest Area...
Page 482: Control Panel
B1830,B2230,B2530,B3030, WSM CABIN [4] CONTROL PANEL Mode Lever Set the mode lever to the desired position. a: Air is blown from the front and side air outlets. b: Air is blown from only the front air outlets. Temperature Control Lever Set this lever at the desired position to obtain the optimum air temperature.
Page 483: Operation
B1830,B2230,B2530,B3030, WSM CABIN [5] OPERATION Heating 1. Set the mode lever to the a position or b position. 2. Set the recirculation / fresh air selection lever to the "FRESH AIR" position. To raise the temperature in quickly, this lever "RECIRCULATION"...
Page 484 B1830,B2230,B2530,B3030, WSM CABIN Cooling or Dehumidifying-heating 1. Set the mode lever to the a position. 2. Rotate the front air outlet toward the chest area. 3. Set the recirculation / fresh air selection lever to the "FRESH AIR" position. To reduce the temperature in the CAB quickly, set this lever to the "RECIRCULATION"...
Page 485 B1830,B2230,B2530,B3030, WSM CABIN Foot Warming and Head Cooling 1. Set the mode lever to the a position. 2. In the cooling or dehumidifying-heating mode, set the temperature control lever at the center position. 3. Open the front air outlet and direct it to your feet.
Page 486 B1830,B2230,B2530,B3030, WSM CABIN Defrosting or Demisting To defrost or demist the windshield, take the following steps. 1. Set the mode lever to the a position. 2. Open the front air outlet, door air outlet and direct it to the windshield.
Page 487: Refrigeration System
B1830,B2230,B2530,B3030, WSM CABIN 2. REFRIGERATION SYSTEM (1) Heater Core (7) Expansion Valve Cold Air Hot Air (2) Heat Sensitive Tube (8) Pressure Switch Low Pressure, Low G: Liquid (3) Compressor (9) Desiccant Temperature Gas and (4) Evaporator (10) Receiver Liquid Mist...
Page 488: Compressor
B1830,B2230,B2530,B3030, WSM CABIN [1] COMPRESSOR The compressor is installed on the engine and is driven by the crank pulley via a belt. The compressor is a pump designed to raise the pressure of refrigerant. Raising the pressure means raising the temperature.
Page 489: Pressure Relief Valve
B1830,B2230,B2530,B3030, WSM CABIN (2) Pressure Relief Valve If the high pressure is abnormally high, the pressure relief valve (1) opens to protect the circuit. Even in the worst case, the outflow of refrigerant is stopped at the minimum limit. (Reference) •...
Page 490: Magnetic Clutch
B1830,B2230,B2530,B3030, WSM CABIN (3) Magnetic Clutch A magnetic clutch is used to engage and disengage the compressor from the engine. Main components are stator (6), rotor with pulley (5), and pressure plate (1) to engage the drive pulley (4) and compressor (8) magnetically.
Page 491: Condenser
B1830,B2230,B2530,B3030, WSM CABIN [2] CONDENSER The condenser (1) is installed in the front of the radiator to enable forced cooling by the air drawn in by the engine radiator fan. The condenser is used for the purpose of cooling by...
Page 492: Receiver
B1830,B2230,B2530,B3030, WSM CABIN [3] RECEIVER The receiver serves the purpose of storing the liquid refrigerant. The amount of liquid refrigerant flowing through the system varies with the operating condition of the air conditioner. To be accurate, the receiver stores excess refrigerant when the heat load is lowered. It also...
Page 493: Air Conditioner Unit
B1830,B2230,B2530,B3030, WSM CABIN [4] AIR CONDITIONER UNIT The air conditioner unit (1) consists of evaporator (3), expansion valve (2), heater core (4), blower (5), etc.. (1) Air Conditioner Unit (4) Heater Core (2) Expansion Valve (5) Blower (3) Evaporator 9Y1210003CAM0019US0...
Page 494: Evaporator
B1830,B2230,B2530,B3030, WSM CABIN When the vapor pressure of the operating system is stable, Pf = Pe + Ps condition will prevail. At this time the needle valve opening will be stationary and constant refrigerant flow will be maintained. The quantity of the refrigerant vaporizing into the...
Page 495: Heater Core
B1830,B2230,B2530,B3030, WSM CABIN (3) Heater Core The heater utilizers the heater core to absorb heat from the coolant, which has removed heat from the engine. The inlet port of heater core is connected to the delivery side of the engine water pump by a rubber hose.
Page 496: Blower
B1830,B2230,B2530,B3030, WSM CABIN (5) Blower The blower unit is installed on the right side of air conditioner unit. The blower serves to force cooling air, hot air or fresh outside air into the cabin through the 7 outlets. The blower motor used is a ferrite type and its speed is controlled by resistors in 3 steps.
Page 497: System Control
B1830,B2230,B2530,B3030, WSM CABIN 3. SYSTEM CONTROL (1) Air Mode Lever (7) Recirculated Air (12) Air Outlet Door D3 (A) Control Plate (2) Blow Switch (8) Blower (Mode Door) (B) Air Selection Lever (3) Air Conditioner Switch (9) Evaporator (13) DEFOGGER...
Page 498: Electrical System
B1830,B2230,B2530,B3030, WSM CABIN 4. ELECTRICAL SYSTEM [1] ELECTRICAL CIRCUIT (1) Battery (5) Compressor Relay (8) Pressure Switch (11) A/C Blower Relay (2) Slow Blow Fuse (6) Compressor Magnet Clutch (9) A/C Blower Switch (12) A/C Blower Motor (3) Main Switch...
Page 499: Blower Relay, Compressor Relay, Thermo Switch And Pressure Switch
B1830,B2230,B2530,B3030, WSM CABIN [2] BLOWER RELAY, COMPRESSOR RELAY, THERMO SWITCH AND PRESSURE SWITCH Remove the inner roof and the relays are visible at the left side pillar of the cabin ceiling: blower relay (1) and compressor relay (2). When the blower fan is...
Page 500: Compressor Relay
B1830,B2230,B2530,B3030, WSM CABIN (1) Compressor Relay Among the air conditioner components, current flows to the blower motor and magnetic clutch. If all of these current were to be passed through the main switch and supplied, the current would be too large for the main switch so that there will be danger or burning out the main switch contact.
Page 501: Blower Switch
B1830,B2230,B2530,B3030, WSM CABIN (2) Blower Switch The output of the blower can be used in 3 positions (Low, Medium, High) by changing the blower switch position. Blower Switch is "OFF" position When the blower switch is in "OFF" position, even if the main switch is turned to "ON"...
Page 502: Thermo Switch
B1830,B2230,B2530,B3030, WSM CABIN (3) Thermo Switch If the evaporator fin temperature, that is the refrigerant vaporizing temperature, drops below 0 °C (32 °F), frost or ice will form on the fins, causing a decrease in air flow and lowering the cooling capacity.
Page 503: Pressure Switch
B1830,B2230,B2530,B3030, WSM CABIN (4) Pressure Switch The pressure switch detects the pressure in the refrigerant cycle, and when something is wrong, turns off the magnetic clutch to prevent the component from damage. This system has a dual type pressure switch, and this switch controls low pressure cut off and high pressure cut off.
Page 504 B1830,B2230,B2530,B3030, WSM CABIN OFF Position: A (When the refrigerant pressure is low) The pressure switch detects the pressure drop when refrigerant leaks from system causing compressor seizure. When pressure of refrigerant is less than specified pressure the switch turns OFF and disengages magnetic clutch.
Page 505 SERVICING CONTENTS 1. TROUBLESHOOTING.......................10-S1 2. SERVICING SPECIFICATIONS ....................10-S5 3. TIGHTENING TORQUES......................10-S6 4. PRECAUTIONS AT REPAIRING REFRIGERANT CYCLE............10-S7 [1] HANDLING OF SERVICE TOOLS ..................10-S8 (1) Manifold Gauge Set.......................10-S8 (2) Refrigerant Charging Hose....................10-S9 (3) Vacuum Pump Adaptor ....................10-S10 (4) Electric Gas Leak Tester .....................10-S10 (5) Can Tap Valve......................10-S10 (6) T-joint...........................10-S11 (7) R134a Refrigerant Recovery and Recycling Machine..........10-S11...
Page 506: Troubleshooting
B1830,B2230,B2530,B3030, WSM CABIN 1. TROUBLESHOOTING COMPRESSOR Reference Symptom Probable Cause Solution Page Noisy (Compressor Bearing of compressor worn or damaged Replace 10-S32 Valves in compressor damaged Replace 10-S32 Belt slipping Adjust or replace G-27 Compressor mounting screws loosen Tighten 10-S32...
Page 507 B1830,B2230,B2530,B3030, WSM CABIN Reference Symptom Probable Cause Solution Page Insufficient Cooling Belt slipping Adjust or replace G-27 (Compressor Does Magnetic clutch defective Repair or replace 10-S32 Not Rotate Properly) Compressor defective Replace 10-S32 Insufficient Cooling Thermostat defective Replace 10-M25 (Others)
Page 508 B1830,B2230,B2530,B3030, WSM CABIN Reference Symptom Probable Cause Solution Page Cycle Pressure Is Not Refrigerant overcharged Check G-53 as Specified. Condenser clogged with dust and dirt Clean G-13 (High-Pressure Level Air mixed Check with manifold 10-S8 to Is Not Specified level.
Page 509 B1830,B2230,B2530,B3030, WSM CABIN WINDSHIELD WIPER Reference Symptom Probable Cause Solution Page Windshield Wiper Wiring defective Check and repair 10-S38 Does Not Operate Fuse blown (Short-circuit, burnt component Correct cause and G-47 to inside motor or other part for operation) replace...
Page 510: Servicing Specifications
B1830,B2230,B2530,B3030, WSM CABIN 2. SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Air-gap of A/C Compressor Magnet Clutch Air gap 0.20 to 0.45 mm – 0.0079 to 0.0177 in. Refrigerating Cycle Pressure 0.15 to 0.20 MPa – (Refrigerating Cycle is Normal Operating) (LO Pressure Side) 1.5 to 2.0 kgf/cm...
Page 511: Tightening Torques
B1830,B2230,B2530,B3030, WSM CABIN 3. TIGHTENING TORQUES Tightening torques of screws, bolts and nuts on the table below are especially specified. (For general use screws, bolts and nuts: See page "5. TIGHTENING TORQUES" on page G-10.) Item N·m kgf·m lbf·ft Cabin mounting bolt and nuts 100 to 120 10.2 to 12.2...
Page 512: Precautions At Repairing Refrigerant Cycle
B1830,B2230,B2530,B3030, WSM CABIN 4. PRECAUTIONS AT REPAIRING REFRIGERANT CYCLE When checking or repairing the air conditioning system, the following precautions and rules must be observed. And it is of first importance that no other personnel than a well-trained serviceman should be allow to handle the refrigerant.
Page 513: Handling Of Service Tools
B1830,B2230,B2530,B3030, WSM CABIN (Reference) Replacing Parts Replenish Quantity Brand Name 20 cc Condenser 0.021 U.S.qts 0.018 Imp.qts 20 cc Evaporator 0.021 U.S.qts ND-OIL 8 <PAG* oil> 0.018 Imp.qts 10 cc Receiver 0.011 U.S.qts 0.009 Imp.qts *PAG: Polyalkyleneglycol (Synthetic oil) 9Y1210003CAS0005US0...
Page 514: Refrigerant Charging Hose
B1830,B2230,B2530,B3030, WSM CABIN When LO and HI Valve is Opened Two circuits are established. Port (A) → HI pressure gauge (2) → LO pressure gauge (1) → Port (B) → Port (C) → Port (D) (Schrader valve must be opened) NOTE •...
Page 515: Vacuum Pump Adaptor
B1830,B2230,B2530,B3030, WSM CABIN (3) Vacuum Pump Adaptor Objective of the Vacuum Pump Adaptor 1. After vacuum has been created in the air conditioning cycle, when the vacuum pump is stopped, since there is vacuum in hoses within the gauge manifold, the vacuum pump oil flows back into the charging hose.
Page 516: T-Joint
B1830,B2230,B2530,B3030, WSM CABIN (6) T-joint T-joint (2) is used to increase efficiency of gas charging using two refrigerant containers (4) at a time. 1. Install two refrigerant container service valves to T-joint (2) sides and connect the charging hose (1) to it.
Page 517: Checking And Charging Refrigerant Cycle
B1830,B2230,B2530,B3030, WSM CABIN 5. CHECKING AND CHARGING REFRIGERANT CYCLE [1] CHECKING WITH MANIFOLD GAUGE IMPORTANT • The gauge indications described in the following testing are those taken under the same condition, so it should be noted that the gauge readings will differs somewhat with the ambient conditions.
Page 518 B1830,B2230,B2530,B3030, WSM CABIN Normal Operating If the refrigerating cycle is operating normally, the reading at the LO pressure side (1) should be generally by around 0.15 to 0.2 MPa (1.5 to 2.0 kgf/cm , 21 to 28 psi) and that at the HI pressure side (2) around 1.27 to 1.66 MPa (13 to 17 kgf/cm...
Page 519 B1830,B2230,B2530,B3030, WSM CABIN Air Entered in the Cycle 1. Symptoms seen in refrigerating cycle • Both LO and HI pressure side (1), (2) pressures too high. LO pressure side (1): 0.2 to 0.35 MPa (2.0 to 3.5 kgf/cm , 28 to 49.8 psi) HI pressure side (2): 1.96 to 2.45 MPa (20 to 25 kgf/cm...
Page 520 B1830,B2230,B2530,B3030, WSM CABIN Refrigerant Fails to Circulate 1. Symptoms seen in refrigerating cycle • LO pressure side (1) pressure is vacuum and, HI pressure side (2) is low pressure. LO pressure side (1): Vacuum HI pressure side (2): 0.49 to 0.59 MPa (5 to 6 kgf/cm , 71.2 to 85.3 psi)
Page 521: Discharging, Evacuating And Charging
B1830,B2230,B2530,B3030, WSM CABIN Faulty Compression of Compressor 1. Symptoms seen in refrigerating cycle • LO pressure side (1): 0.39 to 0.59 MPa (4 to 6 kgf/cm , 56.9 to 85.3 psi) • HI pressure side (2): 0.69 to 0.98 MPa (7 to 10 kgf/cm , 99.6 to 142.2 psi)
Page 522: Evacuating The System
B1830,B2230,B2530,B3030, WSM CABIN (2) Evacuating the System Evacuating the System 1. Discharge refrigerant from the system by R134a refrigerant recovery and recycling machine. (Refer to "Discharging the system".) 2. Connect the charging hose (7) (red) to the HI pressure side charging valve and connect the charging hose (9) (blue) to the LO pressure side charging valve.
Page 523: Charging The System
B1830,B2230,B2530,B3030, WSM CABIN (3) Charging the System Charging an Empty System (Liquid) This procedure is for charging an empty system through the HI pressure side with the refrigerant in the liquid state. CAUTION • Never run the engine when charging the system through the HI pressure side.
Page 524 B1830,B2230,B2530,B3030, WSM CABIN Charging an Empty or Partially Charged System (Vapor) This procedure is to charge the system through the LO pressure side with refrigerant in the vapor state. When the refrigerant container is placed right side up, refrigerant will enter the system as a vapor.
Page 525: Checking Charging Refrigerant Amount
B1830,B2230,B2530,B3030, WSM CABIN (4) Checking Charging Refrigerant Amount After charging the refrigerant, check for amount of charging refrigerant as follows. NOTE • The pressure on the following checking are the gauge indications at ambient temperature 30 °C (86 °F), so it should be noted that the pressure will differ some what with the ambient temperature.
Page 526: Checking, Disassembling And Servicing
B1830,B2230,B2530,B3030, WSM CABIN 6. CHECKING, DISASSEMBLING AND SERVICING [1] CHECKING AND ADJUSTING (1) Compressor Operation of Magnetic Clutch 1. Start the engine. 2. Check whether abrasion of abnormal noise is heard when only the magnetic clutch pulley is running while the A/C switch is turned OFF.
Page 527 B1830,B2230,B2530,B3030, WSM CABIN 1) Connector Voltage a) A/C Blower Relay 1. The voltage across the 4 terminal and chassis should be approx. battery voltage. 2. When turning the main switch ON and A/C blower switch to LO position, the voltage across the 2 terminal and chassis should be approx.
Page 528 B1830,B2230,B2530,B3030, WSM CABIN 1) Connector Voltage 1. Turn the main switch ON. 2. Measure the voltage with a voltmeter across the connector 4 terminal and 3 terminal. 3. If the voltage differs from the battery voltage, the wiring harness, A/C relay, fuse or main switch is faulty.
Page 529 B1830,B2230,B2530,B3030, WSM CABIN A/C Blower Resistor 1. Remove the inner roof. 2. Disconnect the 4P connector (1) for A/C blower resistor (2). 3. Measure the resistance with an ohmmeter across the R1 terminal and E terminal, and across the R2 terminal and E terminal.
Page 530 B1830,B2230,B2530,B3030, WSM CABIN Pressure Switch 1) HI Pressure Side 1. Connect the manifold gauge (6) to compressor as following procedure. Close the HI and LO pressure valves (5), (7) of manifold gauge tightly, and connect the charging hoses (red and blue) (1), (4) to the respective compressor service valves.
Page 531: Front Windshield Wiper
B1830,B2230,B2530,B3030, WSM CABIN (3) Front Windshield Wiper Front Wiper Switch 1. Remove the front wiper cover, and disconnect the front wiper switch connector (1). 2. Perform the following checkings 1) and 2). (1) Front Wiper Switch Connector (2) Front Wiper Switch...
Page 532: Working Light
B1830,B2230,B2530,B3030, WSM CABIN (4) Working Light Front Working Light Switch 1. Remove the front wiper cover (2), and disconnect the working light switch connector (1) from the working light switch (3). 2. Perform the following checkings 1) and 2). (1) Working Light Switch Connector...
Page 533 B1830,B2230,B2530,B3030, WSM CABIN Removing Inner Roof 1. Remove the screws (2) from the control panel. 2. Remove the knob (3). 3. Remove the rivets (1) and the screws (4) from the inner roof (5). (1) Rivet (4) Screw (2) Screw...
Page 534 B1830,B2230,B2530,B3030, WSM CABIN Removing HST Pedal, Floor Mat and Seat Front Cover 1. Remove the bolts (2) and the HST pedal (1). 2. Remove the grip (4). Remove the differential lock pin at the right side rear axle shaft. 3. Remove the bolts (6) and the seat front cover (5) from the fenders and the steps.
Page 535 B1830,B2230,B2530,B3030, WSM CABIN Removing Cover, Step and Stopper 1. Remove the bolts (3). 2. Remove the cover (1). 3. Remove the bolts and the step (2). 4. Remove the bolt and the stopper (5). 5. Remove the cabin mounting bolts and the nuts.
Page 536 B1830,B2230,B2530,B3030, WSM CABIN Removing Tail Light Body and Cabin Mounting Bolts 1. Remove the tail light body (1). 2. Remove the bolts and the nuts (2). 3. Remove the bolts and the nuts (3), (4). (When reassembling) 100 to 120 N·m...
Page 537: Removing Compressor Assembly
B1830,B2230,B2530,B3030, WSM CABIN (2) Removing Compressor Assembly Compressor 1. Discharge the refrigerant from the system. (Refer to "Discharging the Refrigerant": See page 10-S16.) 2. Disconnect the low pressure pipe (suction) (8) and high pressure pipe (discharge) (7) from the compressor (2), then cap the open fitting immediately to keep moisture out of the system.
Page 538 B1830,B2230,B2530,B3030, WSM CABIN Hub Plate 1. Three stopper bolts (1) are set in stopper magnet clutch (2) at the position corresponding to the shape of compressor. 2. The stopper magnet clutch (2) is hung on hub plate (3) and it is fixed that the compressor rotates.
Page 539: Removing Receiver And Condenser
B1830,B2230,B2530,B3030, WSM CABIN Stator 1. Remove the lead wire from compressor body. 2. Remove the external circlip (1). 3. Remove the stator (2). (When reassembling) • Do not use the cir-clip again. • Assemble the cir-clip for the tapered side to become outside of front housing.
Page 540 B1830,B2230,B2530,B3030, WSM CABIN Removing Receiver and Condenser 1. Loosen the pipe nut (3) and disconnect the pipe (8). 2. Remove the bolts (7) from the receiver (1). 3. Remove the bolts (2). 4. Remove the receiver (1) with the pipe (8) from the tractor body.
Page 541: Removing Air Conditioner Unit
B1830,B2230,B2530,B3030, WSM CABIN (4) Removing Air Conditioner Unit Removing Air Conditioner Unit Cover 1. Disconnect the cable (1), (2) from the air conditioner unit cover (3). 2. Remove the bolts (4), (5). 3. Disconnect the hooks (6). 4. Remove the air conditioner unit cover (3).
Page 542 B1830,B2230,B2530,B3030, WSM CABIN Removing Water Valve and Heater Unit 1. Loosen the clamps (1). 2. Disconnect the water hoses from the water valve (2). 3. Remove the water valve (2). 4. Loosen the clamps (3) and disconnect the water hoses (4) from the water pipes (5).
Page 543: Cabin Windshield
B1830,B2230,B2530,B3030, WSM CABIN (5) Cabin Windshield Removing Front Upper Glass and Front Lower Glasses 1. After removing the steering wheel (2), disconnect the wiper motor connector (6). 2. Remove the front wiper panel (7). 3. Remove the nuts (11) and the front glass plates (3).
Page 544 B1830,B2230,B2530,B3030, WSM CABIN Removing Front Lower Glasses 1. Remove the nuts (4). 2. Remove the front glass plate (1) holding the front lower glass (3). 3. Remove the front lower glass (3) with the front weather strip (2). (1) Front Lower Glass Plate...
Page 545 B1830,B2230,B2530,B3030, WSM CABIN Removing Side Glasses 1. Remove the bolt (3) and the screw (5) holding the side glass (1). 2. Remove the side glass (1). (1) Side Glass (4) Window Lock (2) Side Weather Strip (5) Screw (3) Bolt...
Page 546 B1830,B2230,B2530,B3030, WSM CABIN Removing Rear Window 1. Remove the bolts (1) and the gasket (2). 2. Hold the rear window (3). 3. Remove the rear window (3). (1) Bolt (3) Rear Window (2) Gasket 9Y1210003CAS0071US0 Replacing Weather Strip (Except Door Glass) NOTE •...
Page 547: Servicing
B1830,B2230,B2530,B3030, WSM CABIN Replacing Door Glass Weather Strip NOTE • Liquid gasket is applied to the lower portion from the middle height of the door glass. 1. Remove the old weather strip from the door glass. 2. Remove the liquid gasket from the door glass.
Page 548 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 2012. 05, S, EI, EI, engusa Code No.9Y111-00035 2007.

This manual is also suitable for:

B2530 B3030 B2230

Kubota B1830 Workshop Manual

Information

General

1 Tractor Identification

2 General Precautions

3 Handling Precautions for Electrical Parts and Wiring

4 Lubricants, Fuel and Coolant

5 Tightening Torques

6 Maintenance Check List

7 Check and Maintenance

8 Special Tools

9 Tires

10 Implement Limitations

Servicing

1 Troubleshooting

2 Servicing Specifications

3 Tightening Torques

4 Checking, Disassembling and Servicing

Mechanism

Mechanism

1 Structure

2 Front Case

3 Manual Transmission

4 Hydrostatic Transmission

5 Cruise Control

6 Range Gear Shift Section

7 Front Wheel Drive Section

8 Pto System (Hydraulic Pto Clutch Model)

9 Pto System (Mechanical Pto Clutch Model)

10 Differential Gear System

Servicing

Servicing

1 Troubleshooting

2 Servicing Specifications

4 Checking, Disassembling and Servicing

Servicing

1 Troubleshooting

2 Servicing Specifications

4 Checking, Disassembling and Servicing

Servicing

1 Troubleshooting

2 Servicing Specifications

4 Checking, Disassembling and Servicing

Mechanism

1 Hydraulic Circuit

2 Hydraulic Pump

3 Hydraulic Block

5 Independent Pto

6 Three Points Hydraulic System

7 Remote Control Valve

8 Rear Hydraulic Outlet

Servicing

1 Troubleshooting

2 Servicing Specifications

4 Checking, Disassembling and Servicing

Mechanism

1 Wiring Diagram (Without Opc)

2 Wiring Diagram (with Opc)

3 Starting System

4 Charging System

5 Lighting System

6 Gauges

Servicing

1 Troubleshooting

2 Servicing Specifications

3 Checking, Disassembling and Servicing

Mechanism

1 Outline of Air Conditioning System

2 Refrigeration System

3 System Control

4 Electrical System

Quick Links

Chapters

Troubleshooting

Related Manuals for Kubota B1830

Summary of Contents for Kubota B1830