Part of the Yanmar Operator Manuals.
All 191 pages of this Yanmar B55W Operation Manual cover one machine: the B55W Wheel Excavator, from new-machine break-in through biennial overhaul. Inside, you get a safety section complete with excavator rated lift capacity tables, then a full controls walkthrough covering every instrument panel gauge, steering console function, and heating and A/C operation. The maintenance chapter runs from 10-hour daily service through 4000-hour scheduled intervals, with a recommended lubricants table, hydraulic venting procedure, accumulator handling, and bucket shimming steps. Change your air filter every 500 hours or 3 months; that interval is printed in the service schedule alongside torque requirements for critical fasteners. No more hunting through printouts. Bookmarked by section, this PDF lets you jump straight to troubleshooting for engine, hydraulic, swing, electrical, travel, or brake faults the moment your B55W acts up.
What's Inside This Yanmar B55W Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | - | - |
| Operating Controls | - | Component Locations, Operator's Area, Instrument Panel, Steering Console, Heating and Air-Conditioning System, Stereo, Miscellaneous Electrical Devices, Seat Adjustment |
| Operation | - | To Handle a New Excavator, Starting and Stopping the Engine, Safety Lever, Travel, Operating Instructions, Operating Precautions, Parking Excavator, Towing Procedure |
| Inspection, Maintenance and Adjustment | - | Table of Recommended Lubricants, Maintenance Intervals, 10 Hour / Daily Service, 50 Hour / Weekly Service, 100 Hour Service, 200 Hour Service, 250 Hour / Monthly Service, 500 Hour / 3 Month Service |
| Transportation | - | Short Distance Self-Powered Travel, Trailer Loading/Unloading Procedures |
| Troubleshooting | - | Engine, Hydraulic System, Swing System, Electrical System, Travel System, Steering, Brakes |
| Specification | - | Standard Specification, General Dimensions, Working Rang |
| Lifting Capacity | - | - |
| Noise, Vibrations, Filtings | - | - |
| Standard Accessories for B55W | - | - |
| Hydraulic Diagram | - | - |
| Electric Diagram | - | - |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Operating weight | 5.28 metric tons | p. 180 |
| Engine make & model | Yanmar 4TNE94, water-cooled 4-cylinder diesel | p. 180 |
| Engine rated output | 57 PS @ 2,400 rpm | p. 180 |
| Maximum engine torque | 18.0 kg·m (130 ft·lbs) @ 1,600 rpm | p. 180 |
| Bucket capacity (Cece) | 0.15 cu.m (0.20 cu.yd) | p. 180 |
| Travel speed (high range) | 0–25.0 km/h (0–15 mph) | p. 180 |
| Tire size | 12.00-16.5-12PR | p. 180 |
| Gradeability | 35° (70%) | p. 180 |
| Fuel tank capacity | 120 liters (31.7 U.S. gal) | p. 120 |
| Shipping length | 6171 mm (242.6 in) | p. 171 |
| Shipping height / height over cab | 2825 mm (111.2 in) | p. 171 |
| Sound pressure at operator's ear (LpA) | 85 dBA (LwA 100 dBA) | p. 185 |
| Tire lug nut torque | 210 lbf·ft (29 kgf·m), M18 × 24 | p. 165 |
Yanmar B55W Common Problems This Manual Covers
Clunking noise from bucket linkage during digging, pins and bushings showing visible play
Grease all bucket and boom pins, arm linkage bushings, and the swing bearing at every 10-hour daily service interval. Use the grease grade listed in the Table of Recommended Lubricants. Listen for clunking as you cycle the attachment; audible play means the bushing is worn through. Verify fastener torque against the specs.
Manual Section: 10 Hour / Daily ServiceMachine drifts or pulls to one side during travel, one side of tires wearing faster
Check tire inflation on all four wheels and equalize pressure across each axle before every shift. Mismatched inflation between sides is the most common source of straight-line drift in wheel excavators. Inspect front axle hub seals and rear brake components for drag at every 50-hour weekly service. For travel motor and valve diagnostics, follow the travel system troubleshooting section.
Manual Section: Travel System TroubleshootingHydraulic controls slow or unresponsive after the machine has sat, air trapped in the system
Follow the hydraulic venting procedure in the maintenance chapter to bleed trapped air after any hydraulic service or a long idle. Check the hydraulic fluid level and top up to the full mark using the grade in the Table of Recommended Lubricants. Cycle each function slowly through its full travel to purge remaining air before returning to work.
Manual Section: Maintenance IntervalsFrequently Asked Questions
How do you fix Yanmar B55W engine overheating or losing power, temperature gauge climbing into the red zone?
Check and clear packed debris from the radiator grilles at every 10-hour daily service before starting the engine. Verify coolant is at the full mark and inspect hoses for seeping. If the temperature gauge still climbs, follow the troubleshooting procedures. Inspect the cooling fan belt for glazing or slippage.
How do you fix hydraulic bucket and arm move sluggishly or stop responding, pump making a loud whining noise?
Check hydraulic fluid level before each shift and top up if low. Inspect all hoses and fittings for cracks or weeping oil at every 50-hour weekly service interval. Look for foamy oil in the reservoir, which signals air contamination. If pump whining continues after a fluid top-up, consult the hydraulic system diagnostic procedures.
How do you fix engine won't start or cranks slowly, battery dead by morning after normal shutdown?
Inspect battery terminals for corrosion and clean them at every 50-hour weekly service. Check all wiring harness connectors near the engine for moisture or green oxidation. Drain water from the fuel separator daily before the first start. If the battery still won't hold charge after a full overnight charge, consult the troubleshooting procedures.
How do you fix air filter choked after dusty site conditions, engine losing power with rough idle?
Remove and tap clean the air filter element whenever dust conditions are heavy. Replace the element every 500 hours or 3 months, whichever comes first, per the service spec on page 141. Clean the pre-cleaner bowl at every 50-hour weekly check. Never operate the machine without the filter installed; ingested abrasive dust scores cylinder walls quickly. p. 141
How will I receive this Yanmar B55W Operation Manual?
You get a 191-page searchable PDF (19 MB) that downloads instantly after checkout. Open it on your laptop, tablet, or phone, and bring it right to the shop floor.
Are there any print restrictions on this Yanmar B55W manual?
No restrictions at all. Print individual pages, full chapters, or the entire manual. The PDF is completely unlocked.
Does this Yanmar B55W Operation Manual cover the hydraulic system?
Yes. It covers operator-level hydraulic care — checking and topping up hydraulic fluid, the venting procedure, and inspecting hoses and fittings for leaks — and the back of the manual includes a full hydraulic circuit diagram and an electrical wiring diagram for the B55W.
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