Finding the exact part number before a counter trip or a wrong-part return is what these 310 pages are built around. Engine coverage spans exploded views, crankcase through governor. Drivetrain covers the HST unit, all seven transmission shafts, the rear differential, and three rear wheel size variations. Chassis work runs from front axle frame to ROPS. On the hydraulic side you'll find gear pump component breakdowns, pipe routing for the PS, suction, delivery, return, and charge circuits, and control valve internals across three valve assemblies. Specs sit right where you order: piston oversize at +0.5MM, crankpin metal undersize at -0.2MM. System bookmarks and full-text search let you pull a part name or number on any device and order it right the first time.
What's Inside This Kubota B2150HSD Parts Manual
| System | Pages |
|---|---|
| Crankcase | - |
| Oil Pan | - |
| Piston/Crankshaft | - |
| Main Bearing Case | - |
| Flywheel | - |
| Cylinder Head | - |
| Valve/Rocker Arm | - |
| Nozzle Holder | - |
| Nozzle Holder [Component Parts] | - |
| Cylinder Head Cover | - |
| Inlet Manifold | - |
| Exhaust Manifold | - |
| Camshaft | - |
| Gear Case | - |
| Water Pump | - |
| Water Flange/Thermostat | - |
| Fuel Camshaft | - |
| Injection Pump | - |
| Injection Pump [Component Parts] | - |
| Engine Stop Lever | - |
| Speed Control Plate | - |
| Governor | - |
| Upper Gasket Kit | - |
| Lower Gasket Kit | - |
| Fan | - |
| Tension Pulley [Ca] | - |
| Dynamo [A][AU][NZ] | - |
| Alternator [Ca] | - |
| Dynamo [A][AU][NZ] [Component Parts] | - |
| Alternator [Ca] [Component Parts] | - |
| Clutch | - |
| Hydraulic Gear Pump | - |
| Hydraulic Gear Pump [Component Parts] | - |
| Air Cleaner | - |
| Air Cleaner [Component Parts] | - |
| Muffler | - |
| Engine Stop Rod | - |
| Accelerator Lever | - |
| Fuel Tank | - |
| Fuel Pipe 1 | - |
| Fuel Filter | - |
| Fuel Pipe 2 | - |
| Water Pipe | - |
| Radiator | - |
| Starter | - |
| Starter [Component Parts] | - |
| Battery | - |
| Light | - |
| Working Light [Option] | - |
| Panel/Switch | - |
| Panel Board [Component Parts] | - |
| Wire Harness [A][AU][NZ] | - |
| Wire Harness [Ca] | - |
| Clutch Rod | - |
| Clutch Pedal | - |
| Clutch Housing | - |
| Transmission Case | - |
| Transmission Case Cover | - |
| HST | - |
| HST [Component Parts] | - |
| Propeller Shaft | - |
| 1st Shaft/2nd Shaft | - |
| 3rd Shaft | - |
| 4th Shaft | - |
| Front Drive Shaft/6th Shaft | - |
| 7th Shaft | - |
| PTO Shaft | - |
| Mid PTO | - |
| Front PTO [Option] | - |
| Neutral Holder | - |
| Speed Control Pedal | - |
| Speed Change Plate | - |
| Shift Set Lever | - |
| Range Gear Shift Lever | - |
| Range Gear Shift Fork | - |
| Front Wheel Drive Lever/PTO Lever | - |
| Bi-Speed Turn Lever [with Bi-Speed Turn] | - |
| Front Drive Fork | - |
| PTO Fork Shaft | - |
| Rear Differential | - |
| Diff.Lock Pedal | - |
| Rear Axle | - |
| Rear Axle Case | - |
| Rear Wheel (8.3-24) | - |
| Rear Wheel (12.4-16) | - |
| Rear Wheel (13.6-16) | - |
| Brake | - |
| Brake Rod | - |
| Brake Pedal | - |
| Brake Interlocker | - |
| Bevel Gear Shaft | - |
| Front Axle Case | - |
| Bevel Gear Case | - |
| Front Axle Arm | - |
| Front Differential [W/0 Bi-Speed Turn] | - |
| Front Differential [with Bi-Speed Turn] | - |
| Clutch Disk [with Bi-Speed Turn] | - |
| Gear Case [with Bi-Speed Turn] | - |
| Bi-Speed Turn Case [with Bi-Speed Turn] | - |
| Shift Lever [with Bi-Speed Turn] | - |
| Front Drive Shaft | - |
| Front Wheel (6-12) | - |
| Front Wheel (A6-12) | - |
| Front Wheel (24 X 8.50-12) | - |
| Front Axle Frame | - |
| Front Weight Bracket [Option] | - |
| Knuckle Arm | - |
| Manual Steering | - |
| Power Steering | - |
| Manual Steering [Component Parts] | - |
| Power Steering [Component Parts] | - |
| Hydraulic Pipe (Ps) | - |
| Hydraulic Pipe (Suction) | - |
| Hydraulic Pipe (Delivery/Return) | - |
| Hydraulic Block [Component Parts] | - |
| Hydraulic Pipe (Charge) | - |
| Lift Arm | - |
| Hyd.Cylinder Cap | - |
| Control Valve | - |
| Control Valve1 [Component Parts] | - |
| Control Valve2 [Component Parts] | - |
| Control Valve3 [Component Parts] | - |
| Top Link | - |
| Lower Link/Lift Rod | - |
| Check Chain | - |
| Hitch | - |
| Drawbar | - |
| Hood (Bonnet) | - |
| Lace | - |
| Hood (Bonnet) Cover Rear | - |
| Hood (Bonnet) Front | - |
| Hood (Bonnet) Side | - |
| Dust Cover | - |
| Hood (Bonnet) Support | - |
| Fender | - |
| Seat | - |
| Step | - |
| ROPS [A][CA] | - |
| Label 1 | - |
| Label 2 | - |
| Accessories and Service Parts | - |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Fuse Rating | 15A | p. 115 |
| Piston Oversize | +0.5MM | p. 11 |
| Crankpin Metal Undersize | -0.2MM | p. 11 |
| Nozzle Adjusting Washer Thickness (Min) | 1.00MM | p. 24 |
| Nozzle Adjusting Washer Thickness (Max) | 1.95MM | p. 24 |
| Fuse Auto Rating | 15A | p. 115 |
| Transmission Case Shim Thickness | 0.2MM | p. 125 |
| 1st Shaft Tooth Count | 13T | p. 137 |
| Rear Bevel Gear Ratio | 6-37T | p. 175 |
| Front Bevel Gear Ratio | 7-34T | p. 211 |
| Bi-Speed Turn Clutch Gear Tooth Count | 17T | p. 215 |
Kubota B2150HSD Common Problems This Manual Covers
Intermittent crank condition needing replacement fuses or safety interlock switches p. 114
Pull the wire harness layout from the parts diagram on page 114. The main electrical components are laid out there; verify part numbers for the 15A auto-rating fuses on page 115, then order the matching safety switches from the component list to restore the starting circuit.
Manual Section: Wire Harness [A][Au][Nz]Loss of drive or weak hydrostatic transmission response needing replacement filters and internal seals p. 124
Trace the hydrostatic transmission components on the drivetrain parts diagram, page 124. Find the part numbers for the transmission case cover and its internal pieces, and confirm the correct 0.2MM transmission case shim on page 125 before swapping the worn parts.
Manual Section: Transmission CaseComplete engine rebuild required after severe lower end knock and poor cylinder compression p. 6
Match your engine serial number against the parts number list on page 7, then work the block components from the engine parts diagram on page 6. For internal pieces, the +0.5MM oversize piston carries its own part number on page 11.
Manual Section: CrankcaseGrinding noise from the front differential during tight turns while operating in four wheel drive p. 214
Open the exploded view of the bi-speed turn clutch on page 214 and pick the right clutch disk and hardware from the parts list. The 17T bi-speed turn clutch gear has its part number on page 215; confirm it before ordering.
Manual Section: Clutch Disk [With Bi-Speed Turn]Frequently Asked Questions
What are the replacement specifications for fuses?
Part No. 35820-75560 is the replacement fuse, listed as "FUSE AUTO" with a 15A rating. The wire harness assembly uses two of them.
What part numbers are needed for hydrostatic transmission repair on the B2150HSD?
The drivetrain parts diagram on page 124 lists the transmission case cover and internal components. The correct transmission case shim is 0.2MM; confirm the part number on page 125 before ordering.
How do I find the right oversize piston part number for an engine rebuild?
Match your engine serial number on pages 6-7, then locate the +0.5MM oversize piston on page 11 of the engine parts diagram. Each oversize grade carries its own OEM part number.
Are exploded parts diagrams included for the hydraulic and drivetrain systems?
Yes. This parts catalog includes exploded parts diagrams with OEM part numbers for the hydraulic circuits, gear pump, control valves, and drivetrain including the bi-speed turn clutch disk and 17T gear on pages 214-215.
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