Part of the New Holland Repair Manuals.
This 911-page New Holland LS180, LS190 Service Manual covers both skid steer engines (332T/JF and 450/NC), the hydrostatic transmission, and the full electrical system top to bottom. You get wiring diagrams for the EIC functional groups, hydraulic schematics covering the gear pump and boom cylinder circuits, and a full troubleshooting section for the main hydraulic system and hydrostatic pump. Open to the boom lock pin procedures and you're reading the exact steps New Holland wrote for supporting a raised machine safely, not a workaround from a forum thread. Torque the charge pump relief valve to 37-41 N-m and set it to 250-300 PSI; the pump body hardware goes to 35 N-m. Your hydraulic system runs on SAE 10W-30, API SH/CG-4, so stop guessing at fill specs. Bookmarked by system and searchable by keyword, this PDF opens on a laptop, tablet, or phone right at the machine.
What's Inside This New Holland LS180, LS190 Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 2-39 | Introduction, Company Policy, Parts and Accessories, Model Codes, Precautionary Statements, Safety Precaution Information, Machine Model and Serial Number Location |
| Engine (LS180 - 332T/JF) | 40-122 | Engine Specifications, Troubleshooting, Cylinder Head and Valves, Crankshaft and Bearings, Fuel System |
| Engine (LS190 - 450/NC) | 123-291 | Engine Specifications, Troubleshooting, Cylinder Block Overhaul, Timing Gear, Fuel Injector Overhaul |
| Rear Drive Axle (Gearboxes) | 292-327 | Specifications, Gearbox Removal, Gearbox Disassembly, Start-Up Procedure |
| Hydrostatic Transmission | 328-491 | Specifications, Troubleshooting, Hydrostatic Pump Tests, Motor Control Linkage, Hydraulic System Cleaning |
| Brakes and Controls | 492-505 | Specifications, Troubleshooting, Parking Brake Removal, Parking Brake Adjustment |
| Hydraulic System | 506-611 | Specifications, Troubleshooting, Main System Pressure Tests, Gear Pump Flow, Boom Cylinder Disassembly |
| Towing Hooks and Ballasting | 612-613 | Rear Counterweights, Counterweight Support Removal |
| Frames | 614-625 | ROPS Frame, ROPS Removal, ROPS Reinstallation, Labor Guide |
| Axles and Wheels | 626-649 | Specifications, Troubleshooting, Axle Housing Removal, Drive Chain and Sprocket, Tire and Track Installation |
| Cab Climate Control | 650-657 | Heater/Defroster, Switch Wiring, Heater Core Replacement, Fan Assembly Replacement |
| Electrical System | 658-803 | Specifications, Eic Functional Groups, Troubleshooting, Alternator Component Tests, Starter Motor Current Draw |
| Front Loader (Boom and Mounting Plate) | 804-847 | Bucket Types, Boom and Cylinder Pivot Pins, Bucket Latch Plate Installation, Latch Lever and Pin Repair, Checking Loader Faceplate |
| Accessories | 848-885 | Adapting Attachments, High-Flow Hydraulics, Back-Up Alarm, Block Heater, Warning Lights |
| Platform, Cab, Bodywork, and Decals | 886-911 | Safety Decals, Seat and Seat Pan Support, Cab Inner Shell Removal, Cab Inner Shell Reinstallation |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Pump Body Hardware Torque | 35 N·m (26 ft. lbs.) | p. 64 |
| Charge Pump Relief Valve Setting | 17.2 - 20.7 bar (250 - 300 PSI) | p. 333 |
| Charge Pump Relief Valve Torque Specifications | 37 - 41 N·m (27 - 30 ft. lbs.) | p. 333 |
| Hydraulic Fluid Type | SAE 10W-30 motor oil | p. 36 |
| Hydraulic Oil Type and Specifications | API Service SH/CG-4 10W-30 | p. 31 |
| Pipe Thread Fitting Torque (1/8" - 27) | 13 N·m | p. 14 |
| LS180 | ||
| LS180 Engine Displacement | 3.15L | p. 30 |
| LS180 Engine Net Horsepower | 60 @ 2200 RPM | p. 30 |
| LS180 Cooling System Capacity | 14.7 L | p. 31 |
| LS190 | ||
| LS190 Engine Displacement | 5 L | p. 35 |
| LS190 Engine Net Horsepower | 75 @ 2200 RPM | p. 35 |
| LS190 Cooling System Capacity | 15.1 L | p. 36 |
New Holland LS180, LS190 Common Problems This Manual Covers
New Holland LS180 LS190 hydraulic pump grinding noise after 2000 hours, bucket won't lift
Shut down and check the pump body mounting hardware first; torque pump body bolts to 35 N·m (26 ft. lbs.) per the hydraulic system specs on page 506. Inspect the drive coupling between the engine and pump for shear or spline wear. Run a system pressure test from the hydraulic troubleshooting procedures before condemning the pump, since a sheared coupling mimics pump failure but costs a fraction to fix.
Manual Section: Hydraulic System p. 506Boom drifts down slowly or won't hold position with a full bucket load
Test the main system relief valve before pulling the pump. Verify relief valve torque is set to 51 N·m (38 ft. lbs.) as specified on page 515, then check for internal leakage past the valve seat with a flow meter on the return line. If pressure still bleeds down after reseating the valve, pull the pump and check gear/gerotor wear against the clearance specs in the hydraulic system section.
Manual Section: Hydraulic System p. 506Steering jerks or track speed surges unevenly during normal operation
Pull and inspect the hydraulic filter assembly first; a loaded filter starves the steering circuit and causes exactly this jerking. Check all pipe thread fittings feeding the circuit are torqued to 13 N·m per page 14, since a loose fitting draws air and mimics contamination. Verify the charge pump relief valve holds 17.2 to 20.7 bar (250 to 300 PSI) as listed on page 333; replace the filter and drain contaminated fluid if pressure won't stabilize.
Manual Section: Hydraulic System p. 506Hydraulic system runs hot with a whining noise from the pump under load
Drain and check fluid level and condition first; low fluid causes cavitation that sounds identical to pump wear. Fill with API Service SH/CG-4 10W-30 hydraulic oil as specified on page 31, checking for foaming or a milky appearance that points to a bad seal letting air or coolant in. Verify the charge pump relief valve setting holds at 17.2 to 20.7 bar (250 to 300 PSI) per page 333; a valve stuck open lets the pump work against itself and generates heat.
Manual Section: Hydraulic System p. 506H-ERR or P-LOW code triggers an unexpected engine shutdown mid-shift
Check the pressure sensor's electrical connector and wiring harness for corrosion before replacing the sensor itself; loose grounds throw false H-ERR codes far more often than the sensor fails. Confirm actual system pressure against the hydrostatic pump relief setting of 345 bar listed on page 333 to rule out a real pressure fault. If pressure reads within spec but the code persists, replace the sensor rather than chasing the harness further.
Manual Section: Hydraulic System p. 506Frequently Asked Questions
How to reset New Holland LS180 fault code 4?
The manual does not describe how to reset a specific fault code 4, but it provides a general procedure to clear all fault history. To clear faults, navigate to "CLr F" (Clear Faults) in the EIC setup mode, then press and hold the "OPEN BOOK" switch until "CLEAr" appears in the display to clear all fault occurrences. p. 705
What are the torque specs for New Holland LS180 hydraulic pump mounting bolts?
The mounting hardware for the New Holland LS180 hydraulic pump should be torqued to 39 N·m (29 ft. lbs.). p. 515
What does fault code 4 indicate on a New Holland LS180 skid steer?
On a New Holland LS180 skid steer, fault code F4-00 indicates a problem with the Fuel Solenoid. p. 685
How to diagnose fuel solenoid issue on New Holland LS180?
To diagnose a fuel shutoff solenoid issue on a New Holland LS180, first check for battery voltage at the solenoid wire connection with the key "ON" and service "RUN" switch in "RUN" position. If no voltage, check the power wire from EIC to solenoid for an open circuit; if voltage is present, replace the solenoid. p. 756
What do I get after purchasing this New Holland LS180, LS190 manual?
A 911-page Service Manual in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Can I print specific sections of this New Holland LS180, LS190 Service Manual?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
Are hydraulic system diagrams in this New Holland LS180, LS190 Service Manual?
Full hydraulic system diagrams are included, covering circuits, valve locations, and hydraulic component specs for the New Holland LS180, LS190.
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