Part of the Yanmar Parts Manuals.
Need to identify a part on your Wheel Excavator? All 178 pages of this OEM Parts Catalog cover the machine. Exploded-view diagrams break down every major assembly: engine mounting, front and rear axle differentials, hydraulic cylinders (swing, bucket, arm, boom, blade), swing motor, main control valve, travel motor, and full cab electrical. Each diagram links to a numbered parts list so you can pinpoint a gearbox selector fork, a differential bevel gear set, or a main pump housing without guessing at compatibility. Wrong parts waste your day. Bookmarked and keyword-searchable PDF: open it on your tablet, find the assembly, pull the number, and order the right piece the first time.
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Clutch & Transmission | Transfer Gear Box Case, Gear Box Motor & Pump, Transmission Control | |
| Fuel System | Fuel Tank, Fuel Line | |
| Engine | Engine Control System, Engine Mounting | |
| Electrical System | Battery Install, Cabin Electrical | |
| Rear Axle, Differential & Brakes | Front Axle Case, Front Brake Disc, Rear Axle Housing, Rear Differential Carrier, Rear Axle Case, Rear Brake Disc, Brake Cylinder Assembly, Lower Brake Install | |
| Front Axle & Steering | Front Axle Housing, Front Differential Carrier, Steering Cylinder, Steering Wheel & Column, Steering Unit | |
| Hydraulics & 3-Point Hitch | Pump Mounting, Main Pump Assy, Swing Cylinder Assembly, Bucket Cylinder Assembly, Arm Cylinder Assembly, Blade Cylinder Assembly, Boom Cylinder Assembly, Axle Locking Cylinder Assembly, Swing Motor, Main Control Valve, Rd Valve, Hydraulic Tank Install, Attachment Piping, Breaker Piping, Main Piping, Upper Piping | |
| Loader, Backhoe & Attachments | Swing System, Rotary Group, Boom Assembly, Blade, Bucket & Connecting Rod | |
| Body & Operator Station | Rear View Mirror, Instrument Panel, Heater & Defrost Mounting, Upper & Lower Frame, Floor & Bottom Plate, Bottom Cover, Bonnet Install, Cabin Install | |
| Decals & Accessories | Label | |
| Other Components | Intake & Exhaust System, Control Box, Power Train Install, Wheel Rim & Tire, Control Link Install, Control, Turning Joint, Arm Assembly |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| B50W / B50W-1 Wheel Excavator | ||
| 4TN84TL-RBS / 4TNE84T-BS | ||
| Parts Catalog | ||
| 178 | ||
| Y00S3381 | ||
| See p.165 (Boom Assembly, Seal Kit line item) | ||
| E804800580 (p.92, Swing Cylinder) | ||
| E945900900 / E947603708 (p.124) |
