Built for one machine only, the Workmaster 25S compact tractor, this 925-page New Holland Workmaster 25S service manual PDF carries OEM ID 51421067 and follows the factory print page for page. Wiring diagrams take up nearly a third of the book, tracing every harness and connector on your tractor, from the cold start aid through cruise control and the parking brake circuit. Hydraulic schematics map oil from the fixed displacement pump through the relief valves to the three-point hitch control valve, and the hydrostatic transmission gets a complete teardown and rebuild sequence. Set belt deflection at 10 to 14 mm, and torque wheel discs, front and rear, to 43 to 57 N·m. Guess at a hydraulic port torque and threads strip. Bookmarked, text-searchable, and clean off a printer, this PDF lets the pages you need ride to the bench, take grease, and still read fine when your weather window opens.
Complete the set for your Workmaster 25S
What's Inside This New Holland Workmaster 25S Manual
| System | Pages | Key Topics |
|---|
| Introduction | 6-31 | Foreword - Important Notice Regarding Equipment Servicing, Safety Rules, Safety Rules - Ecology and the Environment, Torque - Standard Torque Data for Hydraulic Connections |
| Engine | 32-113 | Engine and Crankcase, Fuel Tanks, Fuel Filters, Air Cleaners and Lines, Intake and Exhaust Manifolds, Engine Cooling System, Fan and Drive |
| Four-Wheel Drive (4WD) System | 114-121 | Drive Shaft |
| Front Axle System | 122-183 | Powered Front Axle, Front Bevel Gear Set, Final Drive Hub |
| Rear Axle System | 184-219 | Powered Rear Axle, Rear Bevel Gear Set, Planetary and Final Drives |
| Hydrostatic Drive | 220-351 | Mechanical Control, Pump and Motor Components, Hydrostatic Transmission |
| Power Take-Off (PTO) | 352-381 | Rear Mechanical Control, Rear Electro-Hydraulic Control, One-Speed Rear PTO |
| Brakes and Controls | 382-415 | Mechanical Service Brakes, Parking Brake |
| Hydraulic Systems | 416-511 | Hydraulic Systems Overview, Reservoir, Cooler, And Filters, Fixed Displacement Pump, Safety and Main Relief Valves, Three-Point Hitch Control Valve, Hydraulic Hand Control |
| Hitches, Drawbars, and Implement Couplings | 512-521 | Rear Three-Point Hitch Linkage |
| Steering | 522-575 | Steering Control, Tie Rods, Steering Pump, Steering Cylinders |
| Wheels | 576-589 | Front Wheels, Rear Wheels |
| Electrical Systems | 590-899 | Electrical System, Harnesses and Connectors, Engine Starting System, Alternator, Battery, Cold Start Aid, Fuel Tank System, Fuel Injection System |
| Platform, Cab, Bodywork, and Decals | 900-925 | Operator Protections, Mechanically-Adjusted Operator Seat, Engine Hood and Panels |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Torque values for metric O-Ring Boss (ORB) port connections | 10.5 N·m (7.7 lb ft) to 525 N·m (387.2 lb ft) | p. 12 |
| Torque values for metric O-Ring Boss (ORB) port plugs | 8.5 N·m (6.3 lb ft) to 525 N·m (387.2 lb ft) | p. 12 |
| Front wheel disc-to-hub torque | 43 – 57 N·m (32 – 42 lb ft) | p. 23 |
| Rear wheel disc-to-axle torque | 43 – 57 N·m (32 – 42 lb ft) | p. 23 |
| Belt deflection | 10 – 14 mm (0.39 – 0.55 in) | p. 20 |
| Belt tension force | 98 N (22 lb) | p. 110 |
| Loader valve assembly M8 bolts torque | 28 N·m (21 lb ft) | p. 502 |
| Rated voltage | 12 V | p. 715 |
| Operating temperature range | 30 – 70 °C (86 – 158 °F) | p. 715 |
| Engine gross horsepower | 18.4 kW (24.7 Hp) @ 3000 RPM | p. 20 |
| Fuel tank capacity | 25 L (6.6 US gal) | p. 20 |
| Cooling system capacity | 3.3 L (3.49 US qt) | p. 20 |
