Part of the New Holland Repair Manuals.
All 815 pages of this New Holland LM5.25, LM6.28 Service Manual PDF (OEM #47712952B) cover one machine family: the LM telescopic handlers, from the engine and DPF exhaust treatment down to the telescopic arm hydraulics. You get wiring diagrams with harness and connector layouts, hydraulic schematics for the variable displacement pump and main control valve, exploded views, error code references, and a torque table section right up front. Step-by-step procedures walk you through the powered front axle, hydrostatic transmission, brakes, steering, and cab air conditioning. Set joystick pilot pressure between 25 and 28 bar, and confirm main valve relief at 230 bar (3335 psi) before you chase a weak boom. No more bleeding circuits on a hunch. Bookmarked with a full text layer; jump to any section or search any spec straight from the phone in your shop.
What's Inside This New Holland LM5.25, LM6.28 Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 7-62 | Basic Instructions - Important Notice Regarding Equipment Servicing, Basic Instructions - Shop and Assembly, Safety Rules, Personal Safety, Foreword - Ecology and the Environment |
| Engine - 10 | 63-104 | Engine and Crankcase, Exhaust Gas Recirculation - Diesel Particulate Filter Exhaust Treatment |
| Four-Wheel Drive (4WD) System - 23 | 105-126 | Drive Shaft |
| Front Axle System - 25 | 127-334 | Powered Front Axle, Front Bevel Gear Set and Differential, Final Drive Hub, Steering Knuckles, And Shafts |
| Rear Axle System - 27 | 335-348 | Non-Powered Rear Axle |
| Hydrostatic Drive - 29 | 349-384 | Hydrostatic Transmission |
| Brakes and Controls - 33 | 385-472 | Mechanical Service Brakes, Hydraulic Service Brakes, Parking Brake or Parking Lock |
| Hydraulic Systems - 35 | 473-668 | Hydraulic Systems, Variable Displacement Pump, Main Control Valve, Auxiliary Hydraulic Pump and Lines, Hydraulic Travel System, Telescopic Arm Hydraulic System |
| Steering - 41 | 669-694 | Steering Control, Cylinders |
| Cab Climate Control - 50 | 695-702 | Air Conditioning |
| Electrical Systems - 55 | 703-788 | Electrical System, Harnesses and Connectors, Cab Controls |
| Platform, Cab, Bodywork, and Decals - 90 | 789-815 | Cab, Machine Shields and Guards |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Drain the hydraulic oil | 92.0 L (24.3 US gal) | p. 71 |
| Drain the cooling system | 12.0 L (3.2 US gal) | p. 71 |
| Tightening torque for drive side flange cover screws | 82 - 91 N·m (60 - 67 lb ft) | p. 170 |
| Main valve max pressure | 230 bar (3335 psi) | p. 481 |
| Joystick pilot pressure | 25 - 28 bar (362 - 406 psi) | p. 483 |
| LM5.25 | ||
| Maximum pressure control valve | 230 bar (3335 psi) | p. 558 |
| LM 5.25 | ||
| Engine Oil Capacity (LM 5.25) | 13.2 L | p. 41 |
| Hydraulic Oil Capacity (LM 5.25) | 92 L | p. 41 |
| Cooling Fluid Capacity (LM 5.25) | 12 L | p. 41 |
| LM 6.28 | ||
| Engine Oil Capacity (LM 6.28) | 13.2 L | p. 42 |
| Hydraulic Oil Capacity (LM 6.28) | 140 L | p. 42 |
| Cooling Fluid Capacity (LM 6.28) | 14.5 L | p. 42 |
New Holland LM5.25, LM6.28 Common Problems This Manual Covers
New Holland LM5.25 telescopic handler boom weak and jerky under load, ECU-101 low hydraulic pressure code
Check hydraulic oil level before anything else; the LM5.25 reservoir holds 92 L (24.3 US gal), the spec on page 41. Then gauge the main relief at the control valve and confirm it holds 230 bar (3335 psi) per page 481. If pressure sags under load with correct oil, suspect a worn variable displacement pump or a sticking spool.
Manual Section: Hydraulic Systems - 35 p. 481Hydraulic pump grinding or cavitation noise at full lift, oil foaming in the reservoir
Stop the engine immediately; cavitation noise means the pump is eating itself. Inspect the suction hose from tank to pump for collapse, cracks, or a loose clamp pulling air, and retorque worm gear band clamps to 5.9 - 6.9 N·m per the torque table on page 35. Verify oil level with the boom lowered, then bleed the suction side before restarting.
Manual Section: Variable displacement pump service p. 473Machine has no hydraulic pressure, pump appears to spin but boom won't lift or telescope
Verify the pump is actually driving the rotating group: pull the pump and inspect the drive coupling splines, since a sheared coupling spins free while producing nothing. Tee a gauge into the delivery line and confirm the system builds toward its 23 MPa maximum, the spec on page 38. Replace the coupling and flush debris before refitting.
Manual Section: Hydraulic Systems - 35 p. 473Transmission overheats under load, ECU-310 temperature code, machine loses drive on grades
Check transmission oil level cold, then blow the cooler fins clear with compressed air; blocked airflow is the usual cause. Inspect cooler hoses for soft spots and retorque worm gear clamps to 5.9 - 6.9 N·m, the spec on page 35. Look up ECU-310 in the error code reference on page 100 before condemning the charge pump.
Manual Section: Hydrostatic transmission service p. 349Boom functions erratic or unresponsive from joystick, ECU-415 control valve stuck code intermittently
Test joystick pilot pressure first: it should read 25 - 28 bar (362 - 406 psi), the spec on page 483. If pilot pressure is in range, the fault is in the main control valve; remove it and clean the spool bores, since contamination sticks spools intermittently. Filter or replace the hydraulic oil before returning the machine to service.
Manual Section: Main control valve service p. 483Frequently Asked Questions
How to reset the DPF regeneration warning on the New Holland LM6.28?
The DPF regeneration process is managed by the engine control unit. If the system reaches 'Level 5: Stop', regeneration is not possible, and the DPF filter must be changed. For lower levels, forced regeneration can be initiated by placing the machine on solid, flat ground, engaging the parking brake, and pressing the switch downwards for 3 seconds while the engine is running. p. 99
What is the engine oil capacity for the New Holland LM5.25?
The engine oil capacity for the LM5.25 is 13.2 liters (3.5 US gallons). p. 41
What is the hydraulic oil capacity for the New Holland LM6.28?
The hydraulic oil capacity for the LM6.28 is 140 liters (37 US gallons). p. 42
What is the tightening torque for the differential carrier screws on the LM5.25?
The differential carrier screws should be tightened to 82 - 91 Nm (60 - 67 lb ft). p. 170
What do I get after purchasing this New Holland LM5.25 manual?
Delivery is instant: a 815-page searchable PDF is yours the second checkout clears. Laptop, tablet, or phone, all fine.
Is this New Holland LM5.25 manual print-friendly?
Yes. The PDF is DRM-free, so printing works from any reader and any printer.
Are there wiring harness diagrams in this New Holland LM5.25 manual?
Yes, full electrical schematics are included with wire colors, connector locations, and circuit descriptions. Page 737 carries one of them.
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