Liebherr L551 Service Manual with Wiring Diagrams

Name: Liebherr L551 Service Manual with Wiring Diagrams
Author: Liebherr

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$39.99 USD · one-time payment

Model: L551

Type: Wheel loader

Serial: from 0101

477 Pages·33 MB·Searchable PDF·English·Print-Ready

✓ Wiring Diagrams
✓ Hydraulic Schematics
✓ Torque Specs
✓ Multi-Level Bookmarks (2-level navigation)

Preview Sample Pages (PDF)

Download, file and refund questions: FAQ

Travel and working hydraulics, the powershift transmission, steering, brakes and the electrical system are each worked through end to end in this Liebherr L551 service manual PDF, a 477-page book for the wheel loader under Liebherr ID 8145009. Hydraulic schematics trace oil from the control valve block past the primary and secondary relief valves to the lift and tilt cylinders, and wiring diagrams follow each circuit from battery and fuse box to the alternator, starter and glow plugs. Travel hydraulics fill a large share of the book, from travel pump and inching valve to the crossover relief valves, and troubleshooting charts sit inside the engine and powershift transmission sections. Fill the hydraulic tank with 200 L and swap the return filter every 500 hours. Alone with a stalled loader, nobody is there to ask. Your copy is bookmarked by section, text-searchable, and rides along on whatever device you carry to the machine.

What's Inside This Manual

System	Pages	Key Topics
General Information	1-6	Introduction, Explanation of Numbering System
Accident Prevention Guidelines	7-18	General Safety Information
General Technical Data	19-33	Conversion Chart, Tightening Torques, Material Classification
Special Tools	34-94	General Special Tools, Special Tools for Engine, Special Tools for Electric System, Special Tools for ZF Axles
Repair Welding	95-100	Preparation of a Crack, Preparation of a Weld, Storing Electrodes, Welding Technique, Reinforcement of the Welding Seam, Reinforcement Plates
Lubricants	101-109	Lubrication Chart
Technical Data and Inspection Schedules	110-143	Adjustment Checklist, Maintenance and Inspection Work
Diesel Engine	144-164	Technical Features
Pump Distributor Gear	165-172	Intermediate Flange, Gear Drive Shaft, Coupling, Gear Housing
Travel Hydraulic System	173-234	Travel Pump, Variable Displacement Motor, Regulator Valve, Replenishing Pressure Relief Valve, Crossover Relief Valves, Inching Valve
Working Hydraulic System	235-298	Control Valve Block, Primary Pressure Relief Valve, Secondary Pressure Relief Valves, Lift Cylinder, Tilt Cylinder, Flow Divider Valve
Electrical System	299-334	Battery, Fuse Box, Alternator, Starter, Glow Plug, Indicator Lights
Heating and Ventilation System	335-340	Heat Exchanger, Fan, Air Ducts, Thermostat Valve, Blower, Fresh Air Vent
Powershift Transmission	341-380	Planetary Gears, Hydraulic Clutches, Gear Pump, Pressure Filter, Shifting Unit, Bypass Valve
Axles	381-387	Differential, Wheel Hub, Disk Brake, Planetary Drive, Oscillating Axle, Bearing
Steering System	388-427	Main Pump, Emergency Steering Pump, Valve Block, Servostat, Steering Cylinder, Flow Divider Valve
Brake System	428-453	Gear Pump, Cut Off Valve, Service Brake Valve, Parking Brake Valve, Accumulator, Disk Brake
Main Frame and Cab	454-470	ROPS, FOPS, Rubber Bushings, Articulation, Oscillating Axle, Instrument Panel
Lift Arms	471-477	Shovel Arm, Lift Cylinder, Tilt Cylinder, Bucket Return Device, Bucket Stops, Hoist Limit Switch

Quick Reference Specifications

Specification	Value	Page
Tightening torque for GE 6-LM fitting	20 Nm	p. 26
Tightening torque for GE 6-LR fitting	20 Nm	p. 26
Hydraulic oil filter change interval	500 hrs	p. 107
Hydraulic oil tank capacity	200.0 L	p. 109
Return filter change interval	500 Hrs.	p. 114
Pressure filter change interval (Powershift Transmission)	500 Hrs.	p. 114
Fuel Filter Pre-Filter	50 - 60 µm	p. 157
Fuel Filter Fine Filter	7 µm	p. 157
Replenishing Pressure (bis S/N:199)	22 ± 2 bar	p. 174
Replenishing Pressure (from S/N:200)	26 ± 2 bar	p. 174
Engine Oil Quantity	23 L	p. 113
Fuel Tank Capacity	320 L	p. 113

Brand	Liebherr
Model	L551
Machine Type	Wheel loader
Manual Type	Service Manual
Language	English
Format	Searchable PDF (Digital Download)
Pages	477
File Size	33 MB
Manual No.	8145009
Serial Range	from 0101
Wiring Diagrams	Yes
Hydraulic Schematics	Yes
Torque Specifications	Yes
Bookmarked / Indexed	Yes

Liebherr L551 Service Manual with Wiring Diagrams

What's Inside This Manual

Quick Reference Specifications

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