Part of the New Holland Repair Manuals.
This 741-page New Holland LS160, LS170 Service Manual gets into the N844 Diesel engine and every system on your skid steer, from hydrostatic transmission to the front loader boom. Inside: wiring diagrams for the full electrical system, hydraulic schematics covering the 322-479 page range, and a troubleshooting section built around real DTC codes, not vague symptoms. You get torque specs, fluid capacities, and maintenance intervals laid out the way New Holland techs actually use them on the shop floor. Set your main system relief at 170-177 bar (2500-2600 PSI) on the LS160, and check injector setting between 2132-2277 PSI before you chase a stalling complaint elsewhere. No more guessing at pressure specs while your hydraulics sit dead. This PDF is bookmarked by section, so you jump straight from cover to Cab Climate Control, Electrical, or the Front Loader chapter without scrolling through 700 pages first.
What's Inside This New Holland LS160, LS170, N844 Diesel Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 1-36 | Adjustable Fittings, Hydraulic Tubes, Pipe Thread Fitting, Locknuts, Cap Screws, Carriage Bolts, Hex Nuts, Skid Steer Cab |
| Engine | 37-160 | Cylinder Head, Piston, Piston Ring, Connecting Rod, Crankshaft, Camshaft, Valve, Pushrod |
| Rear Drive Axle (Gearboxes) | 161-180 | Gearboxes, Final Drive System, Chain Case, Parking Brake |
| Hydrostatic Transmission | 181-299 | Neutralizer, Pumps, Motors, Hydrostatic Drive System, Hydrostatic Pumps, Hydrostatic Motors, Charge Pressure System, Steering System |
| Brakes and Controls | 300-321 | Parking Brake, Chain Case, Brake Caliper, Brake Control Linkage, Spring Brake Assembly, Brake Caliper and Disc |
| Hydraulic System | 322-433 | Valves, Gear Pump, Cylinders, Pedal Controls, Control Valve, Hydraulic Pump, Boom Cylinders, Bucket Cylinders |
| Frames | 434-445 | ROPS, ROPS Frame, Labor Guide |
| Axles and Wheels | 446-469 | Axles, Wheels, Axle Housing Assembly, Final Drive, Drive Chain, Sprocket, Tires |
| Cab Climate Control | 470-477 | Switch and Control Panel, Relay and Fuse Block, Heater Core, Heater Shutoff Valve, Heater Fan Assembly, Filter |
| Electrical System | 478-637 | Electronic Instrument Cluster (Eic), Battery, Ignition Switch, Cab Fuse Panel, Alternator, Starter |
| Front Loader (Boom and Mounting Plate) | 638-679 | Buckets, Boom Lock Pins and Linkage, Attachment Mounting Plate, Boom and Cylinder Pivot Pins, Pallet Fork, Utility Fork |
| Accessories | 680-715 | Adapting Attachments, Back-Up Alarm, Block Heater (Engine), High Flow Hydraulics, Horn, Warning Light |
| Platform, Cab, Bodywork, and Decals | 716-741 | Seat and Seat Pan Support, Cab Inner Shell, Seat Removal, Seat, Switch and Pan Reinstallation, Safety Decals |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Main system relief | 170 - 177 bar (2500 - 2600 PSI) | p. 30 |
| Injector Setting Pounds per sq. inch (PSI) | 2132-2277 | p. 43 |
| For injection pump | 1.6512"-1.6559" (41.94-42.06) | p. 55 |
| V-belt (fan) slack - 0.2" (5 kg) at center | 0.2" (5 kg) | p. 56 |
| Oil relief valve | 44-51 ft. lbs. (60-69 N·m) | p. 57 |
| Pump Mounting Hardware | 39 N·m (29 ft. lbs.) | p. 330 |
| Pump Body Hardware | 35 N·m (26 ft. lbs.) | p. 330 |
| Relief Valve | 170 - 177 bar (2500 - 2600 PSI) Nonadjustable | p. 329 |
| Bushings | Teflon coated | p. 375 |
New Holland LS160, LS170, N844 Diesel Common Problems This Manual Covers
New Holland LS160 hydraulic power fades after 2-3 hours, boom and bucket go weak or dead
Shut the machine down and relieve system pressure before touching any fittings per the safety note on page 5. Pull the reservoir cap and check for foaming or milky oil, a sign water or air is entering the pump inlet. Test main relief at 170-177 bar (2500-2600 PSI) per page 30; if it won't hold, pull the pump and inspect the housing and gears (13 teeth per gear, Teflon-coated wear plate) as detailed on page 375.
Manual Section: Hydraulic System TroubleshootingEngine stalls or shuts down intermittently when lifting a full bucket load under strain
Check the fuel filter first; it's a 10 micron spin-on canister per page 424 and gets starved under load if partially clogged. Crack the line at the filter housing and look for air bubbles, which points to a diaphragm leak in the injection pump. Verify injector pop-off at 2132-2277 PSI, and check the fuel shutoff solenoid draws 1.5-1.8 amps pull-in and 1.3-1.7 amps hold-in on page 580; a weak solenoid can cut fuel under vibration.
Manual Section: Engine TroubleshootingSteering jerks unpredictably and response feels erratic during tight turns
Run the charge system pressure test and the pump efficiency test outlined in this section before condemning any single part. Check hydrostatic pump relief setting at 238 bar (3500 PSI); a leaking or misadjusted relief will starve one motor before the other, causing the jerky pull. Inspect the drive motor case drain flow next; excessive case drain on one side confirms worn seals and calls for a motor rebuild or swap.
Manual Section: Hydrostatic Drive System TroubleshootingComplete loss of hydraulic function, no boom or bucket movement at all
Before disconnecting anything, relieve system pressure per the warning on page 5. Confirm the Service/Run switch is in the Run position, not Service, since that alone kills boom and bucket function per page 334. Check the solenoids for the boom and bucket circuits for proper operation, then verify main relief holds 170-177 bar (2500-2600 PSI); a sheared pump shaft means replacing both the relief valve and the pump.
Manual Section: Hydraulic System Troubleshooting p. 334Fan belt slips and squeals, engine cooling fan belt worn or loose
Press the belt at the center span and measure deflection; it should read 0.2 inch under 5 kg of force per page 56. If deflection exceeds that, loosen the alternator mounting bolts and pivot the alternator out to take up slack, then retorque. Inspect the belt for glazing or cracking along the V-groove; a glazed belt slips under load even when tension checks out and should be replaced outright.
Manual Section: Engine TroubleshootingTransmission overheats with E03 code, sluggish response after extended operation
Pull codes on the EIC and confirm E03 (transmission overheating) before tearing into anything. Drain and inspect the hydrostatic fluid for a burnt smell or metal fines, which points to clutch pack wear. Run the pump case drain and motor case drain tests to isolate excessive internal leakage, and confirm charge pressure is within spec; low charge pressure forces the system to work harder and drives up heat.
Manual Section: Hydrostatic Drive System TroubleshootingFrequently Asked Questions
How to reset New Holland LS160 instrument panel after wire harness failure?
The manual describes a "Clear Memory" function for the EIC (Electronic Instrument Cluster) which returns it to original factory settings, including resetting engine code, hours, temperature display, and RPM calibration. To clear faults, press and hold the "OPEN BOOK" switch until "CLEAr" appears in the display, then release to clear all fault occurrences from memory. p. 525
What are the torque specs for New Holland LS170 fuel pump mounting bolts?
The torque specification for the injection pump bolts on the New Holland LS170 is 7-9 ft. lbs. (9-12 N·m). p. 57
How to diagnose error code 'fuel system air leak' on New Holland LS160?
The manual does not list a specific error code for 'fuel system air leak'. However, if "Air mixed in the fuel system" is suspected, the correction is to bleed the air from the system. This is listed as a possible cause for the engine cranking but not starting, or running irregularly. p. 47
Why does New Holland LS170 stall after startup and show low RPMs at full throttle?
The manual lists several potential causes for the engine stopping during operation, such as low hydrostatic charge pressure, low engine crankcase oil pressure, lack of fuel, clogged fuel filter, or air in the fuel system. For issues at top engine speed, causes like "Top engine speed too high" or "Timing off" are mentioned. The manual also advises against operating above 1,500 RPM for the first three minutes after startup to ensure adequate turbocharger lubrication. p. 48
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Does this New Holland LS160, LS170 manual include hydraulic?
Full hydraulic system diagrams are included, covering circuits, valve locations, and hydraulic component specs for the New Holland LS160, LS170.
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