Part of the Yanmar Parts Manuals.
Tracking down the right OEM numbers for your wheel excavator is easy with this 295-page Yanmar B55W, 4TNE94-DBW Parts Catalog PDF (Y00S3951). Inside, you get highly detailed exploded views of the entire machine, from the main hydraulic pump and center joint down to the radiator assembly. Expect complete hydraulic schematics outlining the low-pressure piping, main piping, and steering valve circuits, plus full electrical diagrams for your cab and chassis. Verify your hydraulic line replacements instantly by checking exact hose length callouts, like the PF3/4-1150L or 1550L lines running to the swing motor. Stop wasting time ordering the wrong fittings from aftermarket sites. Grab this bookmarked download, open it on your tablet in the parts room, and get the exact factory numbers required to rebuild your machine.
Complete the set for your B55W
- Operator Manual: Yanmar B55W Wheeled Mini Excavator Operator Manual (German)
- Operator Manual: Yanmar B55W Wheeled Mini Excavator Operator Manual (French)
- Repair Manual: Yanmar B55W Wheel Excavator Operation Manual
What's Inside This Yanmar B55W Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Frame-Boom Swing | 4-5 | Frame, Counterweight, Battery Cover, Swing Lock, Key Assy, Mirrors |
| Engine Mounting | 6-7 | Engine Assy, Engine Mount Rubber, Engine Bracket, Fasteners |
| Radiator | 8-9 | Assy, Oil Cooler, Fan Guard, Hoses, Reserve Tank, Baffle Plates |
| Air Cleaner | 10-11 | Pre-Cleaner, Element, Hoses, Clamps |
| Muffler | 12-13 | Bracket, Flange, Clamp, Fasteners |
| Hyd. Oil Pump | 14-15 | Main Pump, Coupling Assy, Flange, Cover, Fasteners |
| Hyd. Oil Tank | 16-17 | Oil Tank, Suction Filter, Level Gauge, Breather Assy, Drain Cock, Hoses |
| Fuel Tank | 18-19 | Fuel Filter, Tank Cap, Drain Cock, Hoses, Sedimenter |
| Low Pressure Piping-Boom Swing | 20-21 | Oil Tank, Oil Cooler, Swing Motor, Steering Unit, Center Joint, Control Valve |
| Low Pressure Piping (2) | 22-23 | Oil Tank, Control Valve, Center Joint, Swing Motor |
| Main Piping (1) | 24-25 | Steer Valve, Center Joint, Control Valve |
| Main Piping (2) | 26-27 | Swing Motor, Pump, Steer Valve, Control Valve |
| Main Piping (3) | 28-29 | Bucket Croud, Bucket Dump, Arm Croud, Arm Dump, Control Valve |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Hose length | 1550L | p. 25 |




















