Part of the New Holland Repair Manuals.
Got a 2000-model skid steer that quit mid-job? This 644-page New Holland L250, L255 repair manual PDF walks you through both machines, from the Onan gasoline engine in the 250 to the E673 diesel in the 255, plus the hydrostatic drives, axles, and brakes underneath. Inside: full wiring diagrams for the electrical system, hydraulic and hydrostatic schematics, a dedicated troubleshooting section, and hardware torque charts in inch and metric. You also get fuel, cooling, and lubrication procedures, control valve service, and drive chain adjustment. Set hydrostatic charge pressure to 5.5-8.3 bar (80-120 PSI) and confirm main system pressure holds 110-117 bar before you button it up. Your loader earns nothing sitting on jack stands. The PDF is bookmarked with a live text layer; search any spec, open it on any device, and start wrenching.
What's Inside This New Holland L250, L255 Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information, Cab, Seat,And Attachment Mounting Plate | 5-42 | - |
| Engine | 43-276 | Onan Gasoline Engine, E673 Diesel Engine, Lubrication System, Cooling System, Fuel System, Starters |
| Electrical System | 277-510 | Wiring Diagrams, Control Module Restraint System, Fuel Shutoff Solenoid, Battery, Ignition Key Switch, Circuit Breakers |
| Final Drive (Axles, Drive Chains, Brakes)Hydrostatic System (Pumps, Motors, Stee | 511-644 | Axles, Drive Chains, Parking Brake, Hydrostatic Pumps, Hydrostatic Motors, Control Valve |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Hydrostatic pump case cover bolts torque | 36 - 50 N·m (27 - 37 ft lbs) | p. 34 |
| Hydraulic system oil filter | 10 micron cartridge (NH634958) | p. 34 |
| Hydrostatic transmission system oil filter | 10 micron cartridge (#634958) | p. 34 |
| Hydrostatic motor charge pressure | 5.5 - 8.3 bar (80 - 120 PSI) | p. 38 |
| Hydrostatic motor main system pressure | 110 - 117 bar (1600 - 1700 PSI) | p. 34 |
| Hydraulic pump output | 30.2 l/min. (8 GPM) @3600 RPM | p. 38 |
| Hydraulic pump housing bolt torque | 21 - 24 N·m (16 - 18 ft lbs) | p. 34 |
| Starter Solenoid Screws Torque | 6.1 N·m (4.5 Ft lbs) | p. 52 |
| Rocker Cover Bolts | 10 - 12 N·m (7 - 9 ft lbs) | p. 124 |
| Solenoid (Boom Lockout) Resistance | 7.2 ± 0.2 ohms | p. 285 |
| Ignition (All Systems) Circuit Protection | 15 amp | p. 284 |
| Control Module Restraint System Circuit Protection | 6 amp | p. 284 |
New Holland L250, L255 Common Problems This Manual Covers
New Holland L250 skid steer won't move, one side drives weak, travel stops under load
Check hydrostatic charge pressure first; it must read 5.5 to 8.3 bar (80 to 120 PSI) per the spec on page 553. Low charge pressure points to a plugged filter or a suction leak. Replace the 10 micron filter cartridge, clean the gear pump suction screen, then retest under load.
Manual Section: Hydrostatic System Troubleshooting p. 553Boom lifts slowly and bucket tilt is weak or jerky after warm-up
Test main relief valve pressure with a gauge. Page 517 says the main system relief valve is factory set at 110 bar (1600 PSI); the attachment-compatibility table on page 519 lists the same 1600 PSI as 108 bar for both L250 and L255 — gauge against the 1600 PSI figure, the metric values are just rounded differently. If it reads low, adjust or replace the relief valve. Replace the 10 micron hydraulic filter cartridge and clean the gear pump suction screen; page 585 calls for service at 1 hour, 10 hours, then every 250 hours. Check hose fittings for suction leaks.
Manual Section: Hydraulic System Troubleshooting p. 517Engine cranks strong but won't start, or starts intermittently after sitting overnight
Check the 15 amp ignition circuit fuse, then verify the fuel shutoff solenoid clicks with the key on. Coil resistance should measure 7.0 to 9.0 ohms with 1.0 to 2.0 amps draw, page 333. On the L255 diesel, test each glow plug for 1.0 ohm resistance, never over 1.5 ohm, page 408.
Manual Section: Starting Circuit Troubleshooting p. 333Boom and bucket controls dead with engine running, seat bar interlock suspected
Verify seat switch contact plate clearance at 1.6 mm (1/16 inch), page 395, and seat belt buckle switch activation clearance of 4.1 to 5.8 mm, page 332. Test the boom lockout solenoid: resistance should read 7.2 plus or minus 0.2 ohms with 1.5 to 2.0 amps draw, page 285. Check the 6 amp restraint system fuse before replacing parts.
Manual Section: Seat Switch Restraint System Troubleshooting p. 395Hydraulic oil overheats and drive loses power after thirty minutes of work
Drain and refill with clean oil if it smells burnt or looks milky, then replace the 10 micron filter cartridge; page 585 sets the interval at 1 hour, 10 hours, then every 250 hours. Clean the gear pump suction screen. Retest charge oil pressure warm; it should hold 5.8 to 8.0 bar (85 to 115 PSI), page 550.
Manual Section: Hydrostatic System Troubleshooting p. 550Frequently Asked Questions
What are the hydraulic pressure specifications for a New Holland L250?
The maximum hydraulic pressure for the L250 skid steer is 108 bar (1600 PSI). p. 519
What are the replacement specifications for hydraulic filters?
The hydraulic system uses a 10 micron no-bypass-type filter. It should be changed after 1 hour, 10 hours, and then every 250 hours of operation. p. 585
What is the correct torque for the cylinder head bolts on the L250 gasoline engine?
The cylinder head bolts for the L250 gasoline engine should be tightened to 22-24 N⋅m (16-18 ft lbs) for an asbestos gasket or 19-22 N⋅m (14-16 ft lbs) for a graphoil gasket. p. 52
What is the correct valve clearance for the L255 diesel engine?
For the L255 diesel engine, the intake valve clearance is 0.20 mm (0.008 inch) and the exhaust valve clearance is 0.25 mm (0.010 inch) when cold. p. 36
What is the correct belt deflection for the L255 water pump?
The water pump belt on the L255 engine should have a deflection of 10-15 mm (7/16 to 9/16 inch) when 9-11 kg (20-25 lbs) of force is applied midway between the pulleys. p. 123
Is this New Holland L250 Repair Manual a digital download?
All 644 pages arrive as one searchable PDF at checkout. Read it at the desk, then take the phone out to the machine.
Am I able to print pages from this New Holland L250 manual?
Print away. There is no DRM and no page limit. Many buyers print one chapter at a time and leave the rest on a tablet.
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