Part of the New Holland Repair Manuals.
Somewhere in the 882 pages of this New Holland Workmaster 45, Workmaster 55 service manual PDF (OEM 84269847) is the job you are staring at right now, whether that is a slipping power coupling clutch or a dead lighting circuit. Hydraulic schematics trace the open center system from pump through the mechanical remote valve, and wiring diagrams map the electrical power and lighting circuits on both tractors. Troubleshooting charts walk each fault from symptom to cause, then hand you the repair procedure for the transmission, rear PTO, front axle, brakes and steering. Refill the transmission and rear axle with 25.0 l (6.6 US gal), then set the pressure regulating valve between 17499 and 18002 kPa (2538 to 2611 psi) before you button up the lift housing. Hay does not wait while a tractor sits. Buy this bookmarked, keyword-searchable PDF once and it is yours for the life of the machine.
What's Inside This New Holland Workmaster 45, Workmaster 55 Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 5-32 | Safety Rules, Torque Specification Tables, General Specification |
| Hydraulic - Pneumatic - Electrical - Electronic Systems | 33-226 | Primary Hydraulic Power System, Primary Hydraulic Power System Open Center Mechanical Remote Valve, Hydraulic Command System, Electrical Power System, Lighting System |
| Engine and PTO in | 227-470 | Engine, Fuel and Injection System, Air Intake System, Exhaust System, Engine Coolant System, Lubrication System, Starting System |
| Transmission, Drive and PTO Out | 471-624 | Power Coupling Clutch, Transmission Mechanical, Rear PTO Mechanical |
| Axles, Brakes and Steering | 625-838 | Front Axle, Rear Axle, 2WD-4WD System Mechanical, Steering Hydraulic, Service Brake Mechanical, Parking Brake Mechanical |
| Frame and Cab | 839-882 | Shield, User Controls and Seat, User Platform, Safety Security Accessories |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Transmission/Rear Axle Oil Capacity | 25.0 l (6.6 US gal) | p. 31 |
| Front Axle Differential/Final Reduction Gear Case Oil Capacity | 7.5 l (8.0 US qt) | p. 21 |
| Bolts, lift to housing (C1) | 50 N·m (37 lb ft) | p. 38 |
| Bolts, Distributor to lift housing (C2) | 30 N·m (22 lb ft) | p. 38 |
| Pressure regulating valve setting | 17499 - 18002 kPa (2538 - 2611 psi) | p. 38 |
| Cylinder safety valve setting | 20498 - 21001 kPa (2973 - 3046 psi) | p. 38 |
| Diode rating | 3 A, 12 V | p. 125 |
| Fuse ignition rating | 15 A | p. 143 |
| Fusible link rating | 85 A | p. 143 |
| PTO rear cover retaining bolts torque | 50 N·m (37 lb ft) | p. 618 |
| PTO lever free play | 2 mm (0.08 in) | p. 620 |
| Engine Gross Horsepower (Workmaster 45) | 33.6 kW (45.0 Hp) | p. 21 |
New Holland Workmaster 45, Workmaster 55 Common Problems This Manual Covers
New Holland Workmaster 55 clicks at the key but starter will not crank after sitting through winter
Check both battery cable ends and the ground strap for corrosion, then clean and retighten them. Test the 15 A ignition fuse shown on page 143 with the key on. Verify the shuttle lever is in neutral and the PTO is fully disengaged so the safety start switches close before you condemn the starter.
Manual Section: Safety Start Circuit Troubleshooting p. 143Engine cranks strong but will not fire, water in fuel warning light keeps coming on
Drain the water separator and fuel filter until clean diesel runs out, then bleed the injection lines. Verify the fuel shutoff solenoid clicks when the key comes on; a dead relay mimics an empty tank. If the tractor sat half full, condensation in the 51 L (13.5 US gal) tank on page 21 is the usual culprit.
Manual Section: Engine TroubleshootingThree-point hitch lifts jerky and loses capacity once the hydraulic oil warms up
Check the transmission and rear axle oil level first; the lift shares that 25.0 l (6.6 US gal) sump listed on page 31. Replace the suction filter, due every 300 hours per page 49, before chasing valves. Then work the chart on page 65 and test lift pressure against the 17500 kPa (2538 psi) relief setting on page 24.
Manual Section: Primary Hydraulic Power System Troubleshooting p. 65Rear PTO slips under baler load and the engagement lever creeps out of gear
Adjust the PTO clutch cable so lever free play measures 2 mm (0.08 in) with 21 mm (0.83 in) total cable travel, both on page 620. Verify full engagement takes 125 - 142 N (28 - 32 lb) at the lever. If it still slips after adjustment, pull the rear cover and inspect the clutch pack before you lose a hay window.
Manual Section: Transmission, Drive and PTO Out p. 620Charge light stays lit at full throttle and battery runs down overnight
Clean and retighten both battery cables and the engine ground strap before condemning the alternator. Check the 85 A fusible link on page 143; one reversed jumper cable will burn it open with no other warning. Test the charging circuit diode, rated 3 A, 12 V on page 125, and replace it if it reads open both directions.
Manual Section: Electrical Power System Troubleshooting (Charging Circuit) p. 125Frequently Asked Questions
What are the torque specifications for the front and rear wheel bolts on the New Holland Workmaster 45 and 55?
The front wheel disc-to-hub bolts should be torqued to 123 N·m (91 lb ft). The rear wheel disc-to-hub bolts should be torqued to 192 N·m (142 lb ft). p. 26
What is the correct engine oil capacity for the New Holland Workmaster 45 and 55?
The engine crankcase oil capacity for the Workmaster 45 is 5.5 liters (5.8 US qt), and for the Workmaster 55, it is 7.0 liters (7.4 US qt). p. 21
What is the specified tappet clearance for the intake and exhaust valves on the Workmaster 45 and 55?
The tappet clearance for both intake and exhaust valves (cold) is 0.2 mm (0.008 in) for both the Workmaster 45 and Workmaster 55 models. p. 21
What is the torque specification for the cylinder head bolts on the Workmaster 45 and 55?
The cylinder head bolts for both the Workmaster 45 and Workmaster 55 should be torqued to 98 - 103 N·m (72.3 - 76 lb ft). p. 86
What is the correct hydraulic relief valve pressure setting on a New Holland Workmaster 45 or Workmaster 55 tractor?
The system relief valve setting for the hydraulic lift system is 17500 kPa (2538 psi). p. 24
Is this New Holland Workmaster 45 Service Manual a digital download?
A single searchable PDF file of 882 pages, downloadable right after payment. Nothing ships, nothing waits in the mail.
Does this New Holland Workmaster 45 manual allow printing?
Yes. The PDF is DRM-free, so printing works from any reader and any printer.
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