Part of the Yanmar Parts Manuals.
This 141-page B27 Parts Catalog PDF covers machine variants: B27(AMMANN), B27(ENGLAND AUSTRALIA), and B27(EUROPE) crawler excavators. Inside, you get exploded-view diagrams and OEM part numbers for every major system: hydraulic oil piping, control valve, swivel joint, turning motor, driving motor, boom and arm cylinders, and the full crawler undercarriage. Wiring diagrams and hydraulic schematics are included too, giving you a complete picture of how each circuit connects before you pull a single part number. Every sub-assembly in the engine section carries its own OEM number: air cleaner body, muffler flange and gasket, fuel strainer, and radiator mount hardware listed out individually. Ordering the wrong part costs you two days and a restocking fee. Bookmarked and keyword-searchable: open it on any device, find your system, and order right the first time.
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Fuel System | Air Cleaner, Fuel Tank & Fuel Line, Accelerator | |
| Cooling System | Radiator & Mount | |
| Engine | Muffler, Engine Mount, Hyd. Oil Pump & Joint, Turning Bearing & Turning Lock | |
| Electrical System | Work Lamp, Electric Part, Battery | |
| Undercarriage & Travel | Roller & Adjust, Crawler | |
| Rear Axle, Differential & Brakes | Turning Brake Valve | |
| Hydraulics & 3-Point Hitch | Hyd. Oil Tank, Hyd. Oil Piping, Arm Cylinder, Boom Cylinder, Swing Cylinder, 3rd Valve, Bucket Cylinder, Blade Cylinder, Turning Motor, Swivel Joint, Control Valve | |
| Loader, Backhoe & Attachments | Boom & Arm, Bucket, Blade | |
| Body & Operator Station | Heater & Defroster, Step, Instrument Panel & Seat Mount, Radio, Canopy, Cabin, Bonnet, Frame, Frame Cover | |
| Decals & Accessories | Label, Tool, Tools Box & Manual Case, Greasing | |
| Other Components | Driving Motor, Link Stand, Control Equipment, Operation Lever Stopper |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Yanmar B27 Crawler Excavator | ||
| B27-P(R), B27-C(R), B27 | ||
| 3TN84L-RBS | ||
| Parts Catalog | ||
| 141 | ||
| Y00S2891 | ||
| 172142-73300 | ||
| 172141-70500 |
