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.
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 |
Yanmar B55W Common Problems This Manual Covers
Cannot locate the Yanmar B55W replacement steer valve hose part number after finding a fluid leak p. 24
Check the parts diagram on page 24 for the steering circuit. Locate the line running to the center joint and verify you need the PF3/4-1150L length hose listed on page 25. Order the matching factory part number to ensure proper fitment.
Manual Section: Main Piping (1)Searching for the correct swing motor return line part numbers due to a blown hydraulic hose p. 26
Inspect the hydraulic routing breakdown on page 26. Identify the exact part number for the swing motor connection. Confirm your required replacement matches the PF1/2-1800L hose dimension shown on page 27 before finalizing your parts order with the local dealer.
Manual Section: Main Piping (2)Trying to find the exact replacement part number for a ruptured control valve supply line p. 26
Review the exploded view of the control valve connections on page 26. Find the specific line routed from the main pump. Ensure the replacement part number corresponds to the PF1/2-2200L hose length specified on page 27 to avoid installation issues.
Manual Section: Main Piping (2)Frequently Asked Questions
How do you fix cannot locate the Yanmar B55W replacement steer valve hose part number after finding a fluid leak?
Check the parts diagram on page 24 for the steering circuit. Locate the line running to the center joint and verify you need the PF3/4-1150L length hose listed on page 25. Order the matching factory part number to ensure proper fitment.
How do you fix searching for the correct swing motor return line part numbers due to a blown hydraulic hose?
Inspect the hydraulic routing breakdown on page 26. Identify the exact part number for the swing motor connection. Confirm your required replacement matches the PF1/2-1800L hose dimension shown on page 27 before finalizing your parts order with the local dealer.
How do you fix trying to find the exact replacement part number for a ruptured control valve supply line?
Review the exploded view of the control valve connections on page 26. Find the specific line routed from the main pump. Ensure the replacement part number corresponds to the PF1/2-2200L hose length specified on page 27 to avoid installation issues.
What do I get after purchasing this Yanmar B55W, 4TNE94-DBW manual?
A 295-page Parts Catalog in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Is this Yanmar B55W, 4TNE94-DBW Parts Catalog printable?
No restrictions at all. Print individual pages, full chapters, or the entire manual. The PDF is completely unlocked.
Does this Yanmar B55W, 4TNE94-DBW manual include wiring diagrams?
Yes. You'll find an electrical wiring diagram covering the main wiring layout.
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