Part of the New Holland Repair Manuals.
When your skid steer or track loader goes down, this 987-page New Holland L175 repair manual PDF (OEM #87630289) provides the exact factory breakdown for both the L175 and C175 models. You get complete hydraulic schematics for mechanical and pilot control machines, full electrical wiring diagrams for cab upgrades, and a dedicated troubleshooting section for the hydrostatic transmission. Open to detailed exploded views and step-by-step procedures covering everything from the boom assembly to the axles. Verify that your hydraulic oil temperature sensor EIC fault threshold trips at exactly 109° C (228° F) and lock down the pump relief valve caps to 135 Nm (100 ft. lbs.). Guesswork has no place in the shop. Grab this bookmarked download, pull it up on your tablet, and fix your machine right the first time.
What's Inside This New Holland L175, C175 Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information & Engine | 21-190 | General Information, Engine |
| Undercarriage, Hydrostatic Drive & Brakes | 191-478 | Tracks, Hydrostatic Transmission, Brakes and Controls |
| Hydraulic System, Frames & Axles | 479-724 | Hydraulic System, Towing Hooks and Ballasting, Frames, Axles and Wheels, Cab Climate Control |
| Electrical System & Front Loader | 725-987 | Electrical System, Front Loader (Boom and Mounting Plate), Accessories, Platform, Cab, Bodywork, And Decals, Wiring Schematics |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Hydraulic oil filter light correction | Replace oil filter, if problem still exists go to next step. Check filter sender and wires. | p. 498 |
| Hydraulic Oil Temperature Sensor EIC Fault Threshold | 109° C (228° F) | p. 733 |
| Pump Seal Cover Screws torque | 5 Nm (48 in. lbs.) | p. 257 |
| Pump Relief Valve Caps torque | 135 Nm (100 ft. lbs.) | p. 257 |
| Hydraulic system hot cause: Low oil flow pump | Plugged inlet line, clean or replace line | p. 493 |
| Hydraulic system hot cause: Oil of incorrect viscosity | Replace oil and filter | p. 491 |
| Engine Displacement | 2212 cu. cm (135.0 cu. in.) | p. 49 |
| Cooling System Capacity | 17.0 L (18.0 qt.) | p. 49 |
| Hydraulic Reservoir Capacity | 31.8 L (8.4 gal) | p. 49 |
| Main Relief System Pressure (Hydraulic) | 170 - 177 bar (2500 - 2600 PSI) | p. 50 |
| Boom Cylinders Bore Diameter | 63.5 mm (2.5 in.) | p. 486 |
| Wheel Nut Torque | 170 N·m (125 ft. lbs.) | p. 646 |
New Holland L175, C175 Common Problems This Manual Covers
New Holland L175 hydro temperature sensor throwing false high-temperature warning on EIC display
Check the electrical connector at the sensor first, corroded or fried pins are the usual culprit on these. Verify actual oil temp with a handheld probe at the reservoir before condemning the sensor since the EIC fault threshold triggers at 109° C (228° F). If wiring tests fine, replace the sensor unit and inspect the harness back to the EIC module for heat damage.
Manual Section: Electrical System Troubleshooting (EIC/AIC, Alternator, Starter, Sensors) p. 733Skid plate bolts snapped off or fried, plate rattling loose and machine vibrating
Drill out the sheared bolt remnants and run a tap through the mounting holes before installing new hardware. Clean all mating surfaces of corrosion so the plate seats flat, then torque replacement bolts to the frame fastener spec. Recheck after a few hours of operation since loose skid plate bolts back off fast under vibration.
Manual Section: Frames TroubleshootingHydraulic system running hot with noticeable power loss on the boom and bucket
Start with the reservoir cap and air vent, a plugged vent traps pressure and cooks the oil. Check the suction line and inlet fittings at the pump for restriction or air leaks, tighten or replace fittings as needed. Clean the oil cooler core of debris, and test main relief pressure against the 170 to 177 bar (2500 to 2600 PSI) spec; if it reads low, back off the attachment and let the system cool before diagnosing the relief valve further.
Manual Section: Hydraulic System Troubleshooting (General) p. 493Hydraulic pump making noise and losing pressure after sensor and temperature faults
Pull the pump housing hardware and inspect for wear, torquing housing bolts to 34 to 38 N·m (25 to 28 ft. lbs.) on reassembly. Check the seal cover screws are seated to 5 Nm (48 in. lbs.) since a loose cover lets air into the suction side and causes cavitation noise. Flush the reservoir and refill to the 31.8 L (8.4 gal) capacity with the correct viscosity oil before running the pump back up to pressure.
Manual Section: Hydraulic System Troubleshooting (General) p. 257Wiring harness pins burnt or corroded near sensor connectors causing intermittent electrical faults
Disconnect the harness at the affected connector and inspect pins for discoloration or melted plastic, a sign of resistance heating from a bad crimp. Clean contacts with electrical cleaner and check for continuity end to end rather than just visually. Repair or splice damaged sections with heat shrink connectors and reroute away from the exhaust or turbo area if heat exposure caused the failure.
Manual Section: Electrical System Troubleshooting (EIC/AIC, Alternator, Starter, Sensors)High flow attachment overheats hydraulic oil during continuous operation
Confirm the machine is fitted with 3/4 inch quick couplers, half inch couplers restrict flow and generate heat fast. Turn the high flow switch off whenever the attachment isn't under load, and check that control valve lines were upsized to 3/4 inch rather than left at 5/8 inch. Clean the oil cooler and radiator, and avoid running the attachment continuously against relief pressure.
Manual Section: Accessories Troubleshooting (High Flow Hydraulics) p. 938Frequently Asked Questions
What are the torque specifications for hydraulic pump bolts on New Holland L175/C175?
For the hydraulic gear pump, the mounting hardware bolts should be tightened to 39 N·m (29 ft. lbs.) and the pump body hardware to 35 N·m (26 ft. lbs.). For hydrostatic pump mounting bolts, torque to 228 Nm (169 pound-feet) and lower pump support bracket bolts to 100 Nm (74 pound-feet). p. 425
What are the error codes for New Holland L175 no start or hydro pressure light flash?
The manual does not list specific alphanumeric error codes for "no start" or "hydro pressure light flash". However, the Advanced Instrument Cluster (AIC) displays "Hydraulic Charge Pressure" as a fault item, indicated by an LED backlighted symbol, when low hydraulic oil pressure is detected. For "no start", troubleshooting points to issues like no battery voltage to the start relay or fuel solenoid, or a clogged fuel filter. p. 797
How do you reset the seat safety/dash error on a New Holland L175 that prevents starting?
To clear a seat safety/dash error preventing a "no start" condition, the operator must re-fasten the seat belt if it was unbuckled or if they exited the seat for more than two seconds. The system requires the seat belt to be buckled to enable hydraulic functions and clear the interlock. p. 795
How do you reset the hydraulic pressure light after an oil filter check on a New Holland skid steer?
The hydraulic oil filter warning light on the Electronic Instrument Cluster (EIC) is triggered by a pressure differential sensor. To clear the light, the clogged oil filter must be replaced. The light will turn off automatically once the pressure differential is resolved, typically after replacing the filter. p. 582
Is this New Holland L175, C175, L175 Skid Steer, C175 Track Loader manual a?
Instant PDF download. You get the full 987-page searchable Repair Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Can I print specific sections of this New Holland L175, C175, L175 Skid Steer?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
Does this New Holland L175, C175, L175 Skid Steer, C175 Track Loader manual?
Yes, this New Holland L175, C175, L175 Skid Steer, C175 Track Loader Repair Manual includes hydraulic system diagrams, circuit schematics, and component specifications.
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