Part of the New Holland Repair Manuals.
Pull the top cover off the Powershift gearbox in a New Holland M427 and you are into the hardest hundred pages of this book: clutch pack overhaul, modulation valve operation, and pressure testing for both the clutch circuit and the torque converter circuit. This service manual, New Holland publication 87755802D, covers the M427, M428 and M459 telehandlers and their F4GE9484F*J600 and F4GE9484J*J600 engines across 447 pages.
Beyond the gearbox it works through the engine, front and rear axles, power and parking brakes, the hydraulic system, and the electrical system with fuse layouts and general fault finding.
Every one of these jobs stalls at the same point: you need one torque figure or one test pressure, and the machine sits until you find it. The PDF is bookmarked by section, so the number you are missing is a few clicks away, not a call to the dealer.
What's Inside This New Holland M427, M428, M459 Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 8-45 | Safety Rules, Product Identification, Environmental Considerations, Maintenance Techniques |
| Engine | 46-83 | Main Specifications of Engines, Troubleshooting (Generalities Engine F4GE9484F*J600/F4GE9484J*J600, Removal and Installation of the Motor and the Radiator, Special Tools) |
| Powershift Gearbox | 84-197 | Powershift Gearbox 4x4, Driving with the Powershift Gearbox, Gearbox Assembly, Idler Gear Case Assembly |
| Front Axle | 198-271 | Specifications, Description Front Axle Std Assy, Description Front Axle Lsd Assy, Operation, Troubleshooting, Wheel Toe-In Check, Component Overhaul, Front Axle Removal Procedure |
| Rear Axle | 272-285 | Specifications, Description, Operation Diagram, Component Overhaul, Rear Axle Removal Procedure, Overhaul, Special Tools |
| Brakes | 286-301 | Specifications, Power Brakes, Parking Brake, Brake Disc Adjustment, Troubleshooting, Brakes Disassembly |
| Hydraulic System | 302-399 | Technical Data |
| Electrical System | 400-447 | Electrical System General (Electrical Equipment Specifications, Electrical System and Fuses, Controls and Instruments, Powershift Gearbox 4x3, Switches, Lights, Protecting the Electrical Systems During Charging or Welding, Starting the Machine Using Jump Leads, Temporary Wiring Repairs, Electrical System-General Fault Finding) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Weight | 22700 lb (10300 kg) | p. 3 |
| Radiator cap | 14.5 psi (1 bar) | p. 38 |
| Securing screw, fuel pump | 25 ±5 Nm | p. 63 |
| Radiator Cap Pressure | 14.5 psi (1 bar) | p. 38 |
| Main Hydraulic System Pressure | 3625 psi (250 bar) | p. 40 |
| Steering System Pressure | 2538 psi (175 bar) | p. 40 |
| Wheel Nut Torque | 398 lb-ft (540 Nm) | p. 40 |
| Cab Securing Screw Torque | 280 lb-ft (380 Nm) | p. 40 |
| M427 | ||
| Engine Power (M427) | 101 hp (74 kw) | p. 3 |
| M428, M459 | ||
| Engine Power (M428/M459) | 120 hp (88 kw) | p. 3 |
| M427, M428 | ||
| Max. Lifting Height (M427/M428) | 41.8 ft (12.74 m) | p. 3 |
| M459 | ||
| Max. Lifting Height (M459) | 44.6 ft (13.60 m) | p. 3 |
