Needing the exact factory part numbers for your 1994-1997 Crawler Backhoe? This 229-page Yanmar B22-2A parts catalog PDF breaks down every component from the track rollers to the bucket cylinder. You get highly detailed exploded views showing the assembly order of the hydraulic oil pump, travel motor, and multi-port control valves. Open it up to find complete parts lists for every major assembly.
What's Inside This Yanmar B22-2A Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Label (Cabin) (Jp) | 1 | Assy, Fuel, Specification, Grease Feed, Accel, Restart |
| Label (Cabin) (Ex) | 2 | Assy, Fuel, Accel, Heater Switch, Wiper Switch, Boom |
| Label (Cabin) (As) | 3 | Set, Specification, Grease Feed, Front, Accel, Restart |
| Label (Canopy) (Jp) | 4 | Assy, Front, Accel |
| Label (Canopy) (Ex) | 5 | - |
| Label (Canopy) (As) | 6 | - |
| Tool | 7 | - |
| Inlet Hose & Exhaust Pipe | 8 | - |
| Accelerator | 9 | Lever Assy, Accel., Cable F, Joint, Cable, Clamp, Accel Wire, Pin |
| Engine Mount | 10 | Absorber, Shock, Bracket, MOUNT(R), Engine, Bracket Comp., Bolt M10X30 |
| Radiator & Mount | 11 | MOUNT(R), Radiator, Plate, Sub-Tank Assy, Cap, Net |
| Fuel Tank & Fuel Pipe | 12 | Tank Assy, Gauge Unit, Fuel, Cap, Fuel Tank, Strainer, Fuel Inlet, Hose |
| Battery | 13 | Cord(+), CORD(-), Cover, Clamp, ROD(B), Fix, Spring Washer |
| Electric Part (Cabin, Canopy) | 14 | Harness a, Wire, Box Assy, Indicator, Fuse (15A), Cartridge, Switch, Work Lamp |
| Electric Part (Cabin, Canopy) (As) | 15 | Harness a, Wire, Box Assy, Indicator, Fuse (15A), Cartridge, Switch, Work Lamp |
| Electric Part (Cabin) | 16 | Wire, Harness E, Lamp, Room, Switch, Wiper, Cigar Lighter Assy, Motor 520A |
| Work Lamp | 17 | Wire, Lamp, Bulb 12V55W, Cover, Lamp (Green), Switch |
| Heater & Defroster | 18 | Heater Assy, Switch, Heater, Hose Assy, Defroster Assy, Nozzle, Defroster |
| Radio (Optional) | 19 | Assy, Antenna, Cover Assy, Harness, Stay Assy, Grommet |
| Roller & Adjust | 20 | Idler, Shaft, Roller Assy, Track, Roller, Piston |
| Crawler | 21 | Assy, Shoe, Link Assy, Pin, Track, Master, Rubber |
| Control Equipment (Lever Stand & Stopper) | 22 | Boot P, Lever, Support, Plate, Boot, Lever L Cmp, Knob (L) Assy, Knob R Compl. |
| Control Equipment (Lever Stand & Lever) (Front Multi) | 23 | Stand R, Lever, Bush 2015, Stand L, Bracket, Accel, Nipple PT1/8 |
| Control Equipment (Lever Stand) (As) | 24 | Boot P, Lever, Knob R Compl., Link W/BUSH, Boom, ROD(C), Spool |
| Control Equipment (Boom & Bucket) | 25 | Boot P, Lever, Knob (L) Assy, Shaft, Link Assy, Arm, Rod |
| Control Equipment (Arm & Turning) | 26 | Boots, Grip, Lever, Shaft, Pedal, Rod |
| Control Equipment (Drive) | 27 | Link W/BUSH, Bracket, Pedal, Shaft, Boots, Rod |
| Control Equipment (Swing) | 28 | Lever Assy, Blade, Grip, Link, Bracket Assy, Cable |
| Control Equipment (Blade) | 29 | Bracket, Switch, Lever Assy, Shaft, Bush, Knob |
| Control Equipment (Cut Off Lever) (Front Multi) | 30 | Bracket, Switch, Grip, Arm Assy, Lock, Lever |
| Control Equipment (Cut Off Lever, Side) (As) | 31 | P.T.O. Kit, Joint, Cable, Rod, Spool, Ped |
| Control Equipment (P.T.O. Control) | 32 | - |
| Control Equipment (P.T.O. Control) (Confluence) | 33 | Plate, Frame Assy, Cover, Grommet, Weight, Bearing |
| Frame & Turning Bearing | 34 | Grommet, Cover, Plate, Rubber, Bracket, U-Nut |
| Frame Cover (Cabin) | 35 | Washer, Cover, Plate, Rubber, Bolt, Grommet |
| Frame Cover (Canopy) | 36 | Step, Mat, Floor, Grommet, Spring Washer, Bolt |
| Step | 37 | Fastener, Mount, Cover, Plate, Nut, Grommet |
| Seat & Seat Mount | 38 | Cap, Panel, Bolt, Cover, Plug, Mount |
| Seat Mount (As) | 39 | Washer, Bonnet, Rubber, Spring, Lever, Key Assy |
| Bonnet | 40 | Cabin Assy, Knob, Spring, Frame, Cover, Glass |
| Cabin | 41 | Knob, Grommet, Frame Unl Assy, Coathanger, Clip, Seal, Handle |
| Cabin (As) | 42 | Side Door Assy, Hinge, Key Assy, Lock Assy, Rod Assy, Glass Up |
| Cabin Door | 43 | Canopy Assy, Pole, Roof, Spring Washer, Bolt, Nut |
| Canopy | 44 | Cover, Bolt, Coupling, Pump Assy, Shaft, Bearing |
| Hyd. Oil Pump & Joint | 45 | Cover, Coupling, Pump Assy, Shaft, Seal Case, O-Ring |
| Hyd. Oil Pump & Joint (Front Multi) (As) | 46 | Cylinder, Tube W/BUSH, Rod Comp, Head, Plunger, Piston |
| Boom Cylinder (Cabin) | 47 | Cylinder, Head, Bush, Seal, Rod Comp, Piston |
| Boom Cylinder (Canopy) | 48 | Cylinder, Tube W/BUSH, Rod Comp, Head, Plunger, Piston |
| Boom Cylinder (Canopy) (As) | 49 | Cylinder, Tube W/BUSH, Bush, Seal, Rod Comp, Head |
| Arm Cylinder | 50 | Cylinder, Tube W/BUSH, Seal Set, CYL.HEAD, Washer, Ring |
| Bucket Cylinder | 51 | Cylinder Comp, Seal Set, Head, U-Nut, Collar, Tube W/BUSH |
| Swing Cylinder | 52 | Cylinder Assy, Blade, Seal Set, CYL.HEAD, Washer, U-Nut |
| Blade Cylinder | 53 | Cylinder Assy, Blade, Seal Set, CYL.HEAD, Washer, U-Nut |
| Travel Motor | 54 | Motor Assy, Valve Cmp, Valve Body, Cartridge Assy, Seal Kit, Housing |
| Turning Motor | 55 | Joint, Swivel, Liner, Shaft, Flange, Hub |
| Swivel Joint | 56 | Cushion, Plate, Valve Assy, O-Ring, Section Kit, Plug |
| Control Valve (P Port) | 57 | Spool Section Assy, Spring, Bolt, Socket Head, Plate, Seal, O-Ring |
| Control Valve (Travel) | 58 | Section Kit, Spool, Spring, Check Valve, Bolt, Socket Head, Poppet, Plate |
| Control Valve (Arm & Swing) | 59 | Section Kit, Spool, Spring, Check Valve, Bolt, Socket Head, Poppet, Plate |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Boom swing angle | Left 50 & Right 90 degree | p. 2 |
Yanmar B22-2A Common Problems This Manual Covers
Yanmar B22-2A engine vibrating excessively and cooling system hardware deteriorated with dry-rotted radiator bushings p. 11
Inspect the radiator mounts and locate replacement isolators on page 11. Cross-reference the shock absorber parts with the engine mount bracket assembly shown on page 10. Order new rubber plates, brackets, and M10X30 bolts to handle standard 250-hour service intervals.
Manual Section: Radiator & MountDead electrical circuits and heavily corroded battery terminals with broken hold-down clamps p. 13
Check the battery parts breakdown on page 13. Identify the correct positive cord, negative cord, and fix rod assembly. Match the required spring washers and 15A fuses shown on page 14 to restore reliable starting power for daily 8-hour shifts.
Manual Section: BatteryHydraulic fluid leaking heavily from the main boom cylinder packing gland during normal operation p. 47
Review the boom cylinder exploded view on page 47. Find the exact seal kit, bush, and rod components for the cabin model. Ensure you have the right replacement parts to support the factory Left 50 & Right 90 degree boom swing angle.
Manual Section: Boom Cylinder (Cabin)Faded warning decals and completely missing safety labels on the cabin control panel p. 1
Check the cabin label diagram on page 1. Order the complete assembly sticker pack covering fuel, grease feed, and acceleration indicators. Replace all missing safety specification plates during your next 500-hour machine inspection to keep operators safe on the jobsite.
Manual Section: Label (Cabin) (Jp)Frequently Asked Questions
What are the replacement specifications for radiator bushings?
The manual lists two types of radiator mounts that likely serve as or contain the bushings. For the right radiator mount, the part number is 172171-13300, with a quantity of 1. For the general radiator mount, the part number is 172122-13310, with a quantity of 4.
How do you fix yanmar B22-2A engine vibrating excessively and cooling system hardware deteriorated with dry-rotted radiator bushings?
Inspect the radiator mounts and locate replacement isolators on page 11. Cross-reference the shock absorber parts with the engine mount bracket assembly shown on page 10. Order new rubber plates, brackets, and M10X30 bolts to handle standard 250-hour service intervals.
How do you fix dead electrical circuits and heavily corroded battery terminals with broken hold-down clamps?
Check the battery parts breakdown on page 13. Identify the correct positive cord, negative cord, and fix rod assembly. Match the required spring washers and 15A fuses shown on page 14 to restore reliable starting power for daily 8-hour shifts.
How do you fix hydraulic fluid leaking heavily from the main boom cylinder packing gland during normal operation?
Review the boom cylinder exploded view on page 47. Find the exact seal kit, bush, and rod components for the cabin model. Ensure you have the right replacement parts to support the factory Left 50 & Right 90 degree boom swing angle.
What format is this manual in?
This is a 229-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
Is this Yanmar B22-2A Parts Catalog printable?
Completely printable. The PDF is DRM-free. Print whatever sections you need to take out to the shop. Standard letter or A4 paper works.
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