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Part of the New Holland Repair Manuals.
Looking for the New Holland W50–W80 Series Repair Manual PDF? All 482 pages of this factory repair manual (OEM #87734623C) cover the W50BTC, W60BTC, W70BTC, and W80BTC wheel loaders in one book. You get separate hydraulic diagrams for every model, with and without optional outfits, plus a full electrical section: wiring diagrams, fuse and relay layouts, and voltage and continuity checks. Inside you'll also find complete front and rear axle teardowns, brake pressure checks, and step-by-step rebuilds for the variable-displacement piston pump and travel motor. Set the primary working attachment relief at 250 bar, then torque the drive shaft pulley to 350 Nm before reassembly. Your loader is down and the axle is in pieces on the bench. Get the factory numbers, not forum guesses. Bookmarked and keyword-searchable; pull it up on any device and start wrenching.
What's Inside This New Holland W50BTC, W60BTC, W70BTC, W80BTC Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 1-34 | Safety Instructions, General Safety Instructions |
| Engine | 35-42 | Diesel Engine, Fuel System, Cold Start Device |
| Front Axles | 43-140 | Removal and Installation, Dimensions, Technical Specifications, Oil Change |
| Rear Axles | 141-252 | Removal and Installation, Dimensions, Technical Specifications, Oil Change |
| Brake System | 253-272 | Brake System Diagram (Standard Diagram, High Speed Diagram), Technical Specifications (Brake Pedal Valve, Pressure Switches) |
| Hydraulic System | 273-344 | Hydraulic Diagrams (W50BTC, W50BTC with Optional Outfits, W60BTC, W60BTC with Optional Outfits, W70BTC, W70BTC with Optional Outfits, W80BTC, W80BTC with Optional Outfits) |
| Frame | 345-350 | Articulated Joint (Components, Disassembly and Assembly) |
| Steering System | 351-386 | Operation (Emergency Steering, Pressure Adjustment), Power Steering (Technical Specifications, Components, Disassembly and Assembly, Troubleshooting, Special Tools) |
| Heating and Air Conditioning System | 387-420 | Heating, Air Conditioning, Troubleshooting |
| Electrical System | 421-452 | Electrical Diagrams, Fuses and Relays, Voltage and Continuity Check, Battery (Replacement), Bulbs, Troubleshooting |
| Working Equipment | 453-482 | Hydraulic Diagram, Operation, Removal and Installation, Quick Tool Coupler (Components, Cylinders), Bucket (Assembly, Disassembly, Teeth - Replacement) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Oil pan plug | 50 Nm (36.87 lbf·ft) | p. 24 |
| Cylinder head - 1st phase (M12) | 65 Nm (47.94 lbf·ft) | p. 24 |
| Primary safety pressure (Working attachment) | 250 bar (3625 psi) | p. 26 |
| Secondary safety pressure - tilt dumping cylinder bottom side | 280 bar (4059 psi) | p. 26 |
| Tightening torque for screws (9) | 50 Nm (36.87 lbf·ft) | p. 61 |
| Tightening torque for screws (4) | 169 Nm (124.64 lbf·ft) | p. 63 |
| Maximum compressed air pressure for cleaning heat exchanger | 7 bar | p. 390 |
| Battery (without cold start) Weight (with electrolyte) | 25 kg (55 lb) | p. 444 |
| Battery (with cold start) Weight (with electrolyte) | 18 kg (40 lb) | p. 444 |
| Engine Oil Capacity (without filter) | 8.5L | p. 33 |
| Cooling System Capacity | 16.5L | p. 33 |
| Fuel System Capacity | 95L | p. 33 |
New Holland W50BTC, W60BTC, W70BTC, W80BTC Common Problems This Manual Covers
New Holland W50BTC loader hydraulics weak and erratic after hose burst, boom lifts slowly under load
Relieve trapped pressure by cycling the loader controls with the engine off before cracking any fitting. Inspect every hose for chafing at clamps and replace damaged ends with fresh O-rings. Refill the system, it holds 74 litres (19.50 gal) per page 340, then verify the working attachment relief opens at 250 bar (3625 psi).
Manual Section: Hydraulic System p. 273Brakes stay engaged or release slowly after stopping, pedal pressure feels inconsistent between applications
Check brake pedal valve output with a gauge; allowable service pressure is 175 bar per page 25. Test the accumulator next, it holds only 0.32 L and loses effect when the precharge fades. If a caliper binds, remove and reinstall it, torquing the caliper screws to 169 Nm (124.64 lbf·ft) as shown on page 78.
Manual Section: Brake System p. 253Machine won't crank after battery service, dash lamps flicker and starter turns slowly
Clean and tighten both battery cable clamps before condemning the starter. Confirm you have the right battery; the standard unit weighs 25 kg (55 lb) with electrolyte, specs on page 444. Trace the harness against the wiring diagram on page 423, then run voltage and continuity checks at every ground strap and the starter feed.
Manual Section: Electrical System p. 421Engine runs hot in dusty conditions, coolant temperature climbs during heavy bucket work
Blow out the radiator and heat exchanger cores from the clean side, keeping compressed air under 7 bar as noted on page 390 so you don't fold the fins. Drain and refill with fresh coolant; the system takes 16.5 L per page 33. Check the fan drive and squeeze the lower hose for collapse at high idle.
Manual Section: Engine p. 35Steering feels heavy or slow to respond, effort increases at low engine speed
Check hydraulic oil level first; the tank holds 40 litres (10.50 gal). Tee a gauge into the power steering circuit and confirm 175 bar system pressure, spec on page 26. Inspect the supply hoses for chafing or kinks, then follow the power steering disassembly and pressure adjustment procedures in the Steering System section starting on page 351.
Manual Section: Steering System p. 351Frequently Asked Questions
What is the torque specification for the wheel nuts on a New Holland W50BTC/W60BTC/W70BTC/W80BTC?
The wheel nuts for the front axle must be tightened to a torque of 500 Nm (368.78 lbf·ft). p. 47
What are the replacement specifications for hydraulic hoses?
Always replace hoses and tubes if the cone end or the end connections are damaged. When installing a new hose, loosely connect each end and ensure it takes the designed position before tightening, and ensure the hose is not kinked or twisted. p. 15
What is the tightening torque for the front axle fastening bolts?
The front axle fastening bolts must be tightened to 350 Nm (258.14 lbf·ft). p. 32
What is the capacity of the hydraulic oil tank for the W50BTC model?
The hydraulic oil tank capacity for the W50BTC model is 40 litres (10.50 gal). p. 340
What is the rated power of the diesel engine for the W80BTC model?
The rated power for the W80BTC diesel engine is 61 kW / 82 CV at 2500 rpm. p. 23
How quickly can I access this New Holland W50–W80 Series manual after buying?
You download the Repair Manual yourself: 482 pages, searchable PDF, available immediately. Keep a copy on every device you use.
Are there any print restrictions on this New Holland W50–W80 Series manual?
Yes, printing is unrestricted: a single page, a chapter, or the lot, on letter or A4.
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