Part of the Yanmar Parts Manuals.
Looking for the exact exploded views for your 1988-1992 crawler backhoe? This 235-page Yanmar B27 parts catalog PDF (OEM #Y00K2292) breaks down every boom cylinder, driving motor, and swivel joint for the YB271, B27-1, and B27 series machines. You get complete component identification with factory part numbers, cross-references, and highly detailed exploded diagrams. Open it up to find wiring diagrams for the electrical harnesses, full hydraulic schematics for the control valve piping, and complete parts lists for the 3TN84L-RBS engine.
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| History of Model Change & Effective Machine Number List | Brake Valve, Turning, Control Valve, LUB.OIL Line, 3RD Valve, 2ND Lever | |
| Work Lamp | Incandescent Lamp, Halogen Lamp | |
| Boom & Boom Bracket | Arm W/BUSH, Pin Bush, O-Ring, Pin Assy, Bucket, Nipple B, Grease | |
| Arm Cylinder | Cylinder Assy, Bucket, Tube W/BUSH, Bush, Cylinder Kit, Seal Set, Piston | |
| Heater & Defroster | Heater Assy, Valve, Hose, Cover, Defroster, Clamp | |
| Seat & Seat Mount | Seat, Operator, Slider, Cushion, Mount, Spring Washer | |
| Radio | Assy, Bracket, Panel, Speaker, Antenna, Lead Wire | |
| Cabin | Canopy Assy, Pole, Roof, Grommet, Glass, Hinge | |
| Canopy | Cylinder Assy, Tube W/Bush, Seal Set, Rod W/Bush, Head, Piston | |
| Step & Instrument Panel | Seat, Slider, Back, Cushion, Mount, Plate | |
| Hyd. Oil Tank | Connector, Elbow, O-Ring, Pipe, Hose, Clamp | |
| Muffler | Flange, Pipe, Stay, Gasket, Clamp, Bolt | |
| Air Cleaner & Support | Hose, Duct, Cleaner Assy, Body, Element, Support | |
| Engine Mount | Stopper Shim, Stay, Mount, Hose, Clamp, Radiator | |
| Radiator & Mount | Tank Assy, Cock, Cap, Gauge, Pipe, Hose | |
| Bonnet | Cabin Assy, Grommet, Screw Cap, Mark, Pin, Cabin | |
| Hyd. Oil Pump & Joint | Motor Assy, Driving, GEAR(B), Planetary, Gear, Sun, Shaft, Housing | |
| Tool, Tool Box & Manual Case | Tool Assy, Wrench, Bar Wrench, Box Wrench, Gun 800, Grease, Tool Box Assy | |
| Fuel Tank & Fuel Line | Tank Assy, Fuel, Gauge, Strainer, Fuel Inlet, Hose | |
| Swing Cylinder | Cylinder Assy, Blade, Bush, Seal Set, Head, Piston, Rod W/BUSH | |
| Greasing | Boom W/BUSH, Pin Bush, Nipple, Shim Set, Cotter Pin, Bracket | |
| Bucket Cylinder | Cylinder Assy, Swing, Seal Set, Head, Piston, Rod W/BUSH, Plunger | |
| Arm & Bucket Link | Bucket Assy, Side Cutter, Bucket, Teeth Assy, Teeth Shim Set, Pin Kit, Nipple | |
| Blade Cylinder | Mount, Pump, Coupling, Pump Assy, HYDL.OIL, Front | |
| Remote Control Valve & Cut Off Valve | Valve Cmp, Lever, Cover, Spring, Plate, Washer | |
| Driving Motor | Motor Assy, Plug, Ball, Drive Valve, Spring, Plate | |
| 3rd Valve (Valve) | Reservoir Assy, Rod, Strainer, Element, Valve, Spring | |
| Accelerator | Absorber, Bed, Support, Bracket, Stopper, Spring Washer | |
| Crawler | Bush, Support, Cover, Plate, Spring Washer, Nipple | |
| Battery | Harness, Clamp, Bush, Link, Grommet, Washer | |
| Frame & Guard | Bearing, Seal Set, Seal, Bolt, Parallel Pin, Knob | |
| Turning Bearing & Turning Lock | Bearing, Turning, Seal Set, Parallel Pin, Knob, Lock Lever | |
| Frame Cover | Catch, Magnet, Step, Panel, Plate, Cover | |
| Turning Motor | Joint, Swivel, Shaft, Flange, Hub | |
| Swivel Joint | Valve Assy, Control, Body Assy, Cover, Seat, Spring, Plug |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| YB271, B27, B27-1 (variants: YB271-U/UR/UZ/UZR, B27-C/CR/P/PR/SP/SPR) | ||
| Crawler Backhoe | ||
| 3TN84L-RBS / 3TN84L-RBF | ||
| 235 | ||
| Y00K2292 | ||
| Boom & Boom Bracket, Arm Cylinder, Swing Cylinder, Hyd. Oil Tank, Hyd. Oil Pump & Joint, Driving Motor, Control Valve, Swivel Joint, Crawler, Frame & Guard, Engine Parts |
