Liebherr L 550 1839 Wheel Loader Service Manual – PDF DOWNLOAD
FILE DETAILS:
Liebherr L 550 1839 Wheel Loader Service Manual – PDF DOWNLOAD
Language : English
Pages : 604
Downloadable : Yes
File Type : PDF
Size: 134 MB
DESCRIPTION:
Liebherr L 550 1839 Wheel Loader Service Manual – PDF DOWNLOAD
Preface
Notes for users
- This service manual is designed for trained specialist staff of the Liebherr organisation and their dealers.
- This service manual contains specialist knowledge for repairing Liebherr construc- tion machines. Basic specialist knowledge on electronics, hydraulics, mechanics and engine technology is not contained in this service manual. Therefore special- ized training and qualifications are necessary. Liebherr recommends participating in the Liebherr training program for construction machines.
In this service manual you will find information on:
— Special tools
— Technical data
— Maintenance intervals and maintenance tasks
— Adjustment procedures
— Structure and function descriptions
— Removal and installation tasks
— Circuit diagrams, hydraulic plans and technical drawings
- You will find information on controls and operation in the operator’s manual. Information on spare parts are in the spare parts catalogue. Please observe the local accident prevention laws.
- You can find information on repairs of machine parts in the service documentation under “Wheel loader – repair instructions”.
Safety instructions
General safety instructions
1. Familiarise yourself with the operator’s manual before starting up the
machine.
Make sure that you are in possession of additional instructions for any special
equipment installed on your machine, and that you have read and understood
them.
2. Only expressly authorised personnel may operate, service or repair the
machine.
Observe the legal minimum ages.
3. Only trained or instructed personnel may operate the machine. Clearly assign
responsibility for operation, rigging, maintenance and repair work.
4. The operator of the machine must ensure that no persons are in the operating
area of the machine on the basis of a risk assessment conducted in respect of
the operating site.
5. Clearly establish the driver’s responsibilities (also with respect to traffic regulations)
and authorise him to refuse to carry out unsafe instructions from third
parties.
6. Personnel undergoing training and instruction, or who are not yet fully qualified,
may only be allowed to work on the machine under constant supervision
by an experienced person.
7. Now and again, check that your personnel are working safely and are aware of
possible dangers in observance of the operator’s manual.
8. Wear safe working clothes when working on the machine.
Do not wear rings, wristwatches, ties, scarves, unbuttoned jackets, loose
clothing or similar garments, as they can become caught in the machinery and
cause injury.
Certain tasks require: safety glasses, safety boots, hard hats, protective
gloves, reflective vests, ear protection etc.
9. Ask the site manager about any special safety regulations in force on the
construction site.
10. Do not hold onto the steering column, the control panel or the control levers
when getting on or off the machine.
You might inadvertently trigger movements which could lead to accidents.
11. Never jump down from the machine. Use the steps, ladders and platforms
provided for getting on and off.
12. Keep all handles, steps, rails, gangways, platforms and ladders free from oil,
grease, mud snow and ice. This reduces the risk of slipping, tripping up or
falling.
13. Familiarise yourself with the emergency exit through the right cab door and/or
the rear window.
14. Unless there are other instructions, perform maintenance and repair work as
follows:
Procedure:
• Park the machine on firm, level ground and lower the working attachment
to the ground.
• Move all control levers to neutral.
• Turn off the diesel engine and take out the ignition key.
15. Before all work on the hydraulic system, depressurise the hydraulic circuits
and the hydraulic tank as described in the operator’s manual.
16. Lock the working hydraulics to prevent accidental actuation before leaving the
operator’s seat.
TABLE OF CONTENTS:
Liebherr L 550 1839 Wheel Loader Service Manual – PDF DOWNLOAD
010 Introduction 010-1
010.1 Safety instructions 010-4
0101.1 General safety instructions 010-4
010.1.2 Instructions on preventing crushing injuries and burns 010-5
010.1.3 Instructions on preventing fires and explosions 010-5
010.14 Safety instructions for start-up 010-6
0101.5 Safety precautions during start-up 010-6
010.1.6 Instructions for safe working 010-7
010.1.7 Safety instructions for driving on slopes 010-8
0101.8 Parking safely 010-8
010.1.9 Transporting the machine safely 010-8
010.1.10 Towing the machine safely 010-9
010.1.11 Measures for ensuring safe maintenance 010-9
010.1.12 Safety instructions for maintenance work on machines with hydro
accumulators 010-12
010.1.13 Safety instructions for welding work on the machine 010-12
010.1.14 Safety instruction for working on the working attachment 010-12
010.1.15 Safety instructions for transporting the machine by crane 010-13
010.1.16 Safe maintenance of hydraulic hoses and hose lines 010-13
010.1.17 Roll over protective structure (ROPS) and falling object protection
structure (FOPS) 010-14
010.1.17.1 Preventing accidents 010-14
010.1.17.2 Preventing injuries 010-14
010.1.18 Attachments and accessories 010-14
010.1.19 Protection against vibrations 010-15
010.1.20 See and be seen 010-15
010.1.20.1 Field of view and visual aids 010-15
010.1.20.2 Measures during operation. 010-16
010.1.20.3 Modifications to the machine 010-16
010.1.21 Danger area of the machine 010-16
010.1 Safety instructions 010-4
0101.1 General safety instructions 010-4
010.1.2 Instructions on preventing crushing injuries and burns 010-5
010.1.3 Instructions on preventing fires and explosions 010-5
010.14 Safety instructions for start-up 010-6
0101.5 Safety precautions during start-up 010-6
010.1.6 Instructions for safe working 010-7
010.1.7 Safety instructions for driving on slopes 010-8
0101.8 Parking safely 010-8
010.1.9 Transporting the machine safely 010-8
010.1.10 Towing the machine safely 010-9
010.1.11 Measures for ensuring safe maintenance 010-9
010.1.12 Safety instructions for maintenance work on machines with hydro
accumulators 010-12
010.1.13 Safety instructions for welding work on the machine 010-12
010.1.14 Safety instruction for working on the working attachment 010-12
010.1.15 Safety instructions for transporting the machine by crane 010-13
010.1.16 Safe maintenance of hydraulic hoses and hose lines 010-13
010.1.17 Roll over protective structure (ROPS) and falling object protection
structure (FOPS) 010-14
010.1.17.1 Preventing accidents 010-14
010.1.17.2 Preventing injuries 010-14
010.1.18 Attachments and accessories 010-14
010.1.19 Protection against vibrations 010-15
010.1.20 See and be seen 010-15
010.1.20.1 Field of view and visual aids 010-15
010.1.20.2 Measures during operation. 010-16
010.1.20.3 Modifications to the machine 010-16
010.1.21 Danger area of the machine 010-16
010.2 Special tools for maintenance and repair work 010-18
010.2.1 Special tools, general 010-18
010.2.2 Special tools for the diesel engine 010-18
010.2.3 Special tools for the electrical system 010-19
010.2.4 Special tools for the transmission 010-19
010.2.5 Special tools for front axle MT-L II 010-19
010.2.6 Special tools for rear axle MT-L II 010-20
010.2.7 Special tools for the air conditioning system 010-20
010.2.8 Special tools for cab glazing 010-20
010.2.9 Special tools for the central lubrication system 010-21
Standards and regulations 010-22
010.3.1 Prestressing forces and tightening torques for bolts with metric
010.2.1 Special tools, general 010-18
010.2.2 Special tools for the diesel engine 010-18
010.2.3 Special tools for the electrical system 010-19
010.2.4 Special tools for the transmission 010-19
010.2.5 Special tools for front axle MT-L II 010-19
010.2.6 Special tools for rear axle MT-L II 010-20
010.2.7 Special tools for the air conditioning system 010-20
010.2.8 Special tools for cab glazing 010-20
010.2.9 Special tools for the central lubrication system 010-21
Standards and regulations 010-22
010.3.1 Prestressing forces and tightening torques for bolts with metric
standard and fine threads as per DIN ISO 261 010-22
010.3.1.1 Range of application and purpose 010-22
010.3.1.2 Other applicable documents 010-22
010.3.1.3 Modifications and descriptions 010-23
010.3.1.4 Tightening torques 010-23
010.3.2 Assembly instructions for the piston and piston nut of the hydraulic
cylinder (WN 4121) 010-29
010.3.2.1 Range of application and purpose 010-29
010.3.2.2 Requirements and description 010-29
010.3.2.3 Amendments 010-34
010.3.2.4 Other applicable documents 010-34
010.3.2.5 Maximum adapter operating pressure 010-39
Preservation guidelines 010-40
010.4.1 General information 010-40
010.4.2 Machine out of service for an unknown period of time 010-40
010.4.3 Putting the machine out of service 010-41
010.4.3.1 Out of service for up to 2 months 010-41
010.4.3.2 Out of service for up to 12 months 010-42
010.4.3.3 Out of service for longer than 12 months 010-43
010.4.4 Putting back into service 010-43
010.4.4.1 After being out of service for 2 months 010-43
010.4.4.2 After being out of service for 12 months 010-44
010.3.1.1 Range of application and purpose 010-22
010.3.1.2 Other applicable documents 010-22
010.3.1.3 Modifications and descriptions 010-23
010.3.1.4 Tightening torques 010-23
010.3.2 Assembly instructions for the piston and piston nut of the hydraulic
cylinder (WN 4121) 010-29
010.3.2.1 Range of application and purpose 010-29
010.3.2.2 Requirements and description 010-29
010.3.2.3 Amendments 010-34
010.3.2.4 Other applicable documents 010-34
010.3.2.5 Maximum adapter operating pressure 010-39
Preservation guidelines 010-40
010.4.1 General information 010-40
010.4.2 Machine out of service for an unknown period of time 010-40
010.4.3 Putting the machine out of service 010-41
010.4.3.1 Out of service for up to 2 months 010-41
010.4.3.2 Out of service for up to 12 months 010-42
010.4.3.3 Out of service for longer than 12 months 010-43
010.4.4 Putting back into service 010-43
010.4.4.1 After being out of service for 2 months 010-43
010.4.4.2 After being out of service for 12 months 010-44
010.4.4.3 After being out of service for longer than 12 months 010-44
copyright ® Liebher-Werk Bischofshofen GmbH 2018
L650-1839
LBHM2242499/01/211-20180913_080808/en
LBH/M2242499/01/211-20180913_080808/en
LBH/M2242499/01/211-20180913_080808/en
Service manual Contents
020 Technical data 020-1
020.1 Overall machine 020-5
020.1.1 Complete machine with loading bucket
L550-1839; 020-5
0201.2 Complete machine with loading bucket (industrial lift arms)
L 550-1839; 020-6
020.1.3 Working attachment: light material bucket
L550-1839; 020-8
020.1.4 Working attachment: log grappler
L550-1839; 020-9
020.2 Drive group 020-12
020.2.1 Diesel engine
L550-1839; 020-12
0202.2 Fuel tank
L550-1839; 020-13
020.2.3 Fuel level sensor
L550-1839; 020-13
020.2.4 Fuel pre-filter (separator filter)
L550-1839; 020-13
020.2.5 Air filter vacuum switch
L550-1839; 020-13
0202.6 Clutch
L550-1839; 020-14
020.3 Cooling system 020-15
020.3.1 Fan gear pump
L550-1839; 020-15
020.3.2 Fan gear motor
1550-1839; 020-15
020.3.3 Hydraulic oil temperature sensor B8
L550-1839; 020-15
020.4 Working hydraulics 020-16
0204.1 Working hydraulics pump
L550-1839; 020-16
020.4.2 Control valve block
L550-1839; 020-16
020.4.3 Pilot control unit
L550-1839; 020-16
020.44 Pilot control hydro accumulator
L550-1839; 020-16
0204.5 Stabilisation module
L550-1839; 020-17
0204.6 Ride control hydro accumulator
L550-1839; 020-17
020 Technical data 020-1
020.1 Overall machine 020-5
020.1.1 Complete machine with loading bucket
L550-1839; 020-5
0201.2 Complete machine with loading bucket (industrial lift arms)
L 550-1839; 020-6
020.1.3 Working attachment: light material bucket
L550-1839; 020-8
020.1.4 Working attachment: log grappler
L550-1839; 020-9
020.2 Drive group 020-12
020.2.1 Diesel engine
L550-1839; 020-12
0202.2 Fuel tank
L550-1839; 020-13
020.2.3 Fuel level sensor
L550-1839; 020-13
020.2.4 Fuel pre-filter (separator filter)
L550-1839; 020-13
020.2.5 Air filter vacuum switch
L550-1839; 020-13
0202.6 Clutch
L550-1839; 020-14
020.3 Cooling system 020-15
020.3.1 Fan gear pump
L550-1839; 020-15
020.3.2 Fan gear motor
1550-1839; 020-15
020.3.3 Hydraulic oil temperature sensor B8
L550-1839; 020-15
020.4 Working hydraulics 020-16
0204.1 Working hydraulics pump
L550-1839; 020-16
020.4.2 Control valve block
L550-1839; 020-16
020.4.3 Pilot control unit
L550-1839; 020-16
020.44 Pilot control hydro accumulator
L550-1839; 020-16
0204.5 Stabilisation module
L550-1839; 020-17
0204.6 Ride control hydro accumulator
L550-1839; 020-17
020.4.7 Z kinematics and industrial lift arms lift cylinder
L550-1839; 020-17
020.4.8 Z kinematics tilt cylinder
020.4.8 Z kinematics tilt cylinder
L 550-1839; 020-17
020.4.9 Industrial lift arms tilt cylinder
020.4.9 Industrial lift arms tilt cylinder
L550-1839; 020-18
Travel hydraulics 020-19
020.5.1 Travel pump
Travel hydraulics 020-19
020.5.1 Travel pump
L550-1839; 020-19
020.5.2 Travel motor 1
020.5.2 Travel motor 1
L 550-1839; 020-19
020.5.3 Travel motor 2
020.5.3 Travel motor 2
L550-1839; 020-19
020.5.4 Variable displacement motor scavenging gear pump
020.5.4 Variable displacement motor scavenging gear pump
L550-1839; 020-20
Hydraulic components 020-21
020.6.1 Filter unit
Hydraulic components 020-21
020.6.1 Filter unit
L550-1839; 020-21
020.6.2 Breather filter
020.6.2 Breather filter
L550-1839; 020-21
Steering system 020-22
020.7.1 Servostat
Steering system 020-22
020.7.1 Servostat
L550-1839; 020-22
020.7.2 Steering cylinder
020.7.2 Steering cylinder
L 550-1839; 020-22
020.7.3 Steering cylinder pressure relief valve
020.7.3 Steering cylinder pressure relief valve
L550-1839; 020-22
020.7.4 Steering damper hydro accumulator
020.7.4 Steering damper hydro accumulator
L 550-1839; 020-22
020.7.5 Emergency steering pump
020.7.5 Emergency steering pump
L550-1839; 020-23
020.7.6 Emergency steering pressure switch B3
020.7.6 Emergency steering pressure switch B3
L550-1839; 020-23
020.7.7 Emergency steering check pressure switch B3a
020.7.7 Emergency steering check pressure switch B3a
L550-1839; 020-23
Brake system 020-24
020.8.1 Brake system gear pump
Brake system 020-24
020.8.1 Brake system gear pump
L550-1839; 020-24
020.8.2 Compact brake valve
020.8.2 Compact brake valve
L550-1839; 020-24
020.8.3 Service brake hydro accumulator
020.8.3 Service brake hydro accumulator
L 550-1839; 020-24
020.8.4 Brake light pressure switch B12
020.8.4 Brake light pressure switch B12
L550-1839; 020-24
copyright ® Liebher-Werk Bischofshofen GmbH 2018
LIEBHERR L550-1839
LBHM2242499/01/211-20180913_080808/en
LBH/M2242499/01/211-20180913_080808/en
LBH/M2242499/01/211-20180913_080808/en
Service manual
Contents
020.8.5 Accumulator charge pressure switch B19
L550-1839; 020-25
0208.6 Parking brake hydro accumulator
L550-1839; 020-25
020.9 Electrical system 020-26
020.9.1 Central control unit (UEC3)
L550-1839; 020-26
020.9.2 Battery
L550-1839; 020-26
020.9.3 Voltage transformer
L550-1839; 020-27
020.10 Gearbox 020-28
020.10.1 Transmission
L550-1839; 020-28
020.11 Axles and drive shafts 020-29
020.11.1 Front axle
L550-1839; 020-29
020.11.2 Rear axle
L550-1839; 020-29
020.11.3 Front cardan shaft
L550-1839; 020-29
020.11.4 Rear cardan shaft
L550-1839; 020-30
020.11.5 Tyres
L550-1839; 020-30
020.11.56.2 Special tyres 020-31
020.12 Steel parts of the basic machine 020-32
020.12.1 Ballast weight
L 550-1839; 020-32
020.13 Operator’s cab, heating and air conditioning 020-33
020.13.1 Heating, air conditioning
L550-1839; 020-33
020.13.2.1 Air conditioning 020-33
020.13.3.1 Air conditioning compressor 020-33
020.13.4 Dryer
L550-1839; 020-33
020.13.5 Pressure switches
L550-1839; 020-34
020.13.6 Anti-icing temperature sensor
L550-1839; 020-34
020.14 Lubrication system 020-35
copyright © Liebherr-Werk Bischofshofen GmbH 2018
L550-1839 LIEBHERR 9
Contents Service manual
L550-1839; 020-25
0208.6 Parking brake hydro accumulator
L550-1839; 020-25
020.9 Electrical system 020-26
020.9.1 Central control unit (UEC3)
L550-1839; 020-26
020.9.2 Battery
L550-1839; 020-26
020.9.3 Voltage transformer
L550-1839; 020-27
020.10 Gearbox 020-28
020.10.1 Transmission
L550-1839; 020-28
020.11 Axles and drive shafts 020-29
020.11.1 Front axle
L550-1839; 020-29
020.11.2 Rear axle
L550-1839; 020-29
020.11.3 Front cardan shaft
L550-1839; 020-29
020.11.4 Rear cardan shaft
L550-1839; 020-30
020.11.5 Tyres
L550-1839; 020-30
020.11.56.2 Special tyres 020-31
020.12 Steel parts of the basic machine 020-32
020.12.1 Ballast weight
L 550-1839; 020-32
020.13 Operator’s cab, heating and air conditioning 020-33
020.13.1 Heating, air conditioning
L550-1839; 020-33
020.13.2.1 Air conditioning 020-33
020.13.3.1 Air conditioning compressor 020-33
020.13.4 Dryer
L550-1839; 020-33
020.13.5 Pressure switches
L550-1839; 020-34
020.13.6 Anti-icing temperature sensor
L550-1839; 020-34
020.14 Lubrication system 020-35
copyright © Liebherr-Werk Bischofshofen GmbH 2018
L550-1839 LIEBHERR 9
Contents Service manual
020.14.1 Central lubrication system (Liebherr)
L550-1839; 020-35
020.14.1.1 Central lubrication pump 020-35
020.14.1.2 Progressive distributor 020-35
030 Maintenance 030-1
030.1 Maintenance and inspection schedule 030-9
030.2 Filling quantities and lubrication chart 030-14
030.2.1 Recommended lubricants
L550-1839; 030-14
030.22 Recommended operating fluids
L550-1839; 030-14
030.3 Lubricants and fuels 030-16
030.3.1 General information on changing lubricants and fuels 030-16
030.3.2 Converting hydraulic system from mineral oils to biodegradable
hydraulic fluids 030-16
030.3.3 Diesel fuels
L550-1839; 030-17
030.3.3.1 Specification 030-17
030.3.3.2 High sulphur content in the diesel fuel 030-17
020.14.1.1 Central lubrication pump 020-35
020.14.1.2 Progressive distributor 020-35
030 Maintenance 030-1
030.1 Maintenance and inspection schedule 030-9
030.2 Filling quantities and lubrication chart 030-14
030.2.1 Recommended lubricants
L550-1839; 030-14
030.22 Recommended operating fluids
L550-1839; 030-14
030.3 Lubricants and fuels 030-16
030.3.1 General information on changing lubricants and fuels 030-16
030.3.2 Converting hydraulic system from mineral oils to biodegradable
hydraulic fluids 030-16
030.3.3 Diesel fuels
L550-1839; 030-17
030.3.3.1 Specification 030-17
030.3.3.2 High sulphur content in the diesel fuel 030-17
030.3.3.3 Diesel fuel at low temperatures (winter operation) 030-17
030.3.4 Lubricating oils for diesel engines
L550-1839; 030-18
030.3.4.1 Lubricating oil quality 030-18
030.3.4.2 Lubricating oil viscosity 030-18
030.3.4.3 Lubricating oil change intervals 030-19
030.3.5 Refrigerant
L550-1839; 030-20
030.3.6 Coolant
1550-1839; 030-20
030.3.6.1 Requirements for the water used 030-20
030.3.6.2 Antifreeze and corrosion inhibitor 030-20
030.3.6.3 Minimum quality requirement 030-20
030.3.7 Hydraulic oil
1550-1839; 030-21
030.3.7.1 Liebherr hydraulic oil 030-21
030.3.7.2 Using engine oil as hydraulic oil 030-21
030.3.7.3 Warming up 030-22
030.3.7.4 Biodegradable hydraulic oils 030-22
030.3.4.1 Lubricating oil quality 030-18
030.3.4.2 Lubricating oil viscosity 030-18
030.3.4.3 Lubricating oil change intervals 030-19
030.3.5 Refrigerant
L550-1839; 030-20
030.3.6 Coolant
1550-1839; 030-20
030.3.6.1 Requirements for the water used 030-20
030.3.6.2 Antifreeze and corrosion inhibitor 030-20
030.3.6.3 Minimum quality requirement 030-20
030.3.7 Hydraulic oil
1550-1839; 030-21
030.3.7.1 Liebherr hydraulic oil 030-21
030.3.7.2 Using engine oil as hydraulic oil 030-21
030.3.7.3 Warming up 030-22
030.3.7.4 Biodegradable hydraulic oils 030-22
copyright ® Liebher-Werk Bischofshofen GmbH 2018
10 LIEBHERR L550-1839
LBHM2242499/01/211-20180913_080808/en
LBH/M2242499/01/211-20180913_080808/en
LBH/M2242499/01/211-20180913_080808/en
Service manual
Contents
030.3.7.5 Changing the oil, analysing the oil, changing filters 030-23
030.3.8 Lubricating oils for transmissions
L550-1839; 030-24
030.3.9 Lubricating oils for axles
L550-1839; 030-25
030.3.10 Lubrication grease and other lubricants
L550-1839; 030-26
030.3.10.1 Minimum quality requirements 030-26
030.3.10.2 Liebherr lubrication grease 030-26
030.4 Maintenance tasks 030-28
0304.1 Safety precautions
L550-1839; 030-28
0304.2 Preparatory tasks for maintenance 030-28
030.4.2.1 Maintenance positions
L550-1839; 030-29
030.4.2.2 Opening the service hatches
L 550-1839; 030-30
030.4.2.3 Turning off the battery main switch
L550-1839; 030-31
030.4.3 Overall machine 030-32
030.4.3.1 Checking the machine for external damage
L550-1839; 030-32
030.4.3.2 Removing loose parts, dirt, ice and snow from the
machine
L550-1839; 030-32
030.4.3.3 Cleaning the machine
L550-1839; 030-33
030.4.3.4 Checking the machine for leaks
L550-1839; 030-34
030.4.3.5 Making sure the bolted connections are tight
L550-1839; 030-34
030.4.3.6 Corrosion protection system for use with salt and arti-
ficial fertilisers (optional): Carrying out corrosion
protection
L550-1839; 030-35
030.4.3.7 Oil analyses
L550-1839; 030-35
0304.4 Drive group 030-41
030.4.4.1 Checking the engine oil level
L550-1839; 030-41
030.4.4.2 Changing the engine oil
L550-1839; 030-42
030.4.4.3 Changing the engine oil filter
L 550-1839; 030-43
copyright ® Liebherr-Werk Bischofshofen GmbH 2018
1550-1839 LIEBHERR 1″
Contents Service manual
030.3.8 Lubricating oils for transmissions
L550-1839; 030-24
030.3.9 Lubricating oils for axles
L550-1839; 030-25
030.3.10 Lubrication grease and other lubricants
L550-1839; 030-26
030.3.10.1 Minimum quality requirements 030-26
030.3.10.2 Liebherr lubrication grease 030-26
030.4 Maintenance tasks 030-28
0304.1 Safety precautions
L550-1839; 030-28
0304.2 Preparatory tasks for maintenance 030-28
030.4.2.1 Maintenance positions
L550-1839; 030-29
030.4.2.2 Opening the service hatches
L 550-1839; 030-30
030.4.2.3 Turning off the battery main switch
L550-1839; 030-31
030.4.3 Overall machine 030-32
030.4.3.1 Checking the machine for external damage
L550-1839; 030-32
030.4.3.2 Removing loose parts, dirt, ice and snow from the
machine
L550-1839; 030-32
030.4.3.3 Cleaning the machine
L550-1839; 030-33
030.4.3.4 Checking the machine for leaks
L550-1839; 030-34
030.4.3.5 Making sure the bolted connections are tight
L550-1839; 030-34
030.4.3.6 Corrosion protection system for use with salt and arti-
ficial fertilisers (optional): Carrying out corrosion
protection
L550-1839; 030-35
030.4.3.7 Oil analyses
L550-1839; 030-35
0304.4 Drive group 030-41
030.4.4.1 Checking the engine oil level
L550-1839; 030-41
030.4.4.2 Changing the engine oil
L550-1839; 030-42
030.4.4.3 Changing the engine oil filter
L 550-1839; 030-43
copyright ® Liebherr-Werk Bischofshofen GmbH 2018
1550-1839 LIEBHERR 1″
Contents Service manual
0304.4.4 Checking the V-ribbed belt on the engine
L550-1839; 030-44
030.4.4.5 Changing the V-ribbed belt on the engine
030.4.4.5 Changing the V-ribbed belt on the engine
1550-1839; 030-46
030.4.46 Checking the engine valve clearance
030.4.46 Checking the engine valve clearance
L550-1839; 030-46
0304.47 Checking the bleeder filter of the crankcase
0304.47 Checking the bleeder filter of the crankcase
L550-1839; 030-49
030.4.4.8 Checking the glow plugs
030.4.4.8 Checking the glow plugs
L550-1839; 030-50
0304.49 Diesel engine – Checking the crankshaft torsional
0304.49 Diesel engine – Checking the crankshaft torsional
vibration damper
1550-1839; 030-52
0304.4.10 Diesel engine – Changing the crankshaft torsional
0304.4.10 Diesel engine – Changing the crankshaft torsional
vibration damper
L550-1839; 030-54
030.4.4.11 Draining off condensate and sediment from the fuel
030.4.4.11 Draining off condensate and sediment from the fuel
tank
L550-1839; 030-55
030.4.4.12 Draining off condensate from the Separ fuel pre-filter
030.4.4.12 Draining off condensate from the Separ fuel pre-filter
1550-1839; 030-56
030.4.4.13 Draining off condensate from the fuel pre-filter
030.4.4.13 Draining off condensate from the fuel pre-filter
L550-1839; 030-57
030.4.4.14 Changing the Separ fuel pre-filter insert
030.4.4.14 Changing the Separ fuel pre-filter insert
1550-1839; 030-58
030.4.4.15 Changing the fuel pre-filter
030.4.4.15 Changing the fuel pre-filter
L550-1839; 030-60
030.4.4.16 Changing the fuel fine filter
030.4.4.16 Changing the fuel fine filter
L550-1839; 030-61
030.4.4.17 Bleeding the fuel system
030.4.4.17 Bleeding the fuel system
1550-1839; 030-62
030.4.4.18 Cleaning the air filter service cover and dust
030.4.4.18 Cleaning the air filter service cover and dust
discharge valve
L550-1839; 030-63
030.4.4.19 Checking the air suction hoses for leaks and tight
030.4.4.19 Checking the air suction hoses for leaks and tight
fitting
1550-1839; 030-65
030.4.4.20 Changing the air filter main element
030.4.4.20 Changing the air filter main element
1550-1839; 030-66
030.4.4.21 Changing the air filter safety element
030.4.4.21 Changing the air filter safety element
1550-1839; 030-68
030.4.4.22 Cleaning the oil bath air filter (optional)
030.4.4.22 Cleaning the oil bath air filter (optional)
L550-1839; 030-69
030.4.4.23 Checking the exhaust system for leaks and tight
030.4.4.23 Checking the exhaust system for leaks and tight
fitting
1550-1839; 030-70
copyright ® Liebher-Werk Bischofshofen GmbH 2018
copyright ® Liebher-Werk Bischofshofen GmbH 2018
12 LIEBHERR 550-1838
LBHM2242499/01/211-20180913_080808/en
LBH/M2242499/01/211-20180913_080808/en
LBH/M2242499/01/211-20180913_080808/en
Service manual
Contents
0304.5 Cooling system 030-71
030.4.5.1 Checking the coolant level
L 550-1839; 030-71
030.4.5.2 Checking the coolant antifreeze and corrosion inhib-
itor concentration
1550-1839; 030-72
030.4.5.3 Cleaning the cooling system
L 550-1839; 030-76
030.4.5.4 Changing the coolant
1550-1839; 030-77
0304.6 Working hydraulics 030-80
030.4.6.1 Lubricating the solenoids, universal joints and
tappets on the pilot control unit
L 550-1839; 030-80
0304.7 Hydraulic components 030-80
030.4.7.1 Checking the oil level in the hydraulic tank
1550-1839; 030-80
030.4.7.2 Checking and cleaning the magnetic rod on the
hydraulic tank
L 550-1839; 030-82
030.4.7.3 Draining off condensate and sediment from the
hydraulic tank
L 550-1839; 030-83
030.4.7.4 Hydraulic tank – changing the return-suction filter
L 550-1839; 030-84
030.4.7.5 Changing the hydraulic tank breather filter
L 550-1839; 030-85
030.4.7.6 Hydraulic tank – changing the oil in the hydraulic
system
1550-1839; 030-86
0304.8 Steering system 030-88
030.4.8.1 Testing the steering
L 550-1839; 030-88
030.4.8.2 Lubricating the bearing points on the steering cylin-
ders
1550-1839; 030-88
0304.9 Brake system 030-89
030.4.9.1 Testing the service brake and parking brake
L 550-1839; 030-89
030.4.9.2 Checking the service brake discs for wear
1550-1839; 030-90
030.4.9.3 Checking the gap and wear on the parking brake
linings
L 550-1839; 030-92
030.4.10 Electrical system 030-96
copyright ® Liebherr-Werk Bischofshofen GmbH 2018
1550-1839 LIEBHERR 13
Contents Service manual
030.4.10.1 Checking the lights
L550-1839; 030-96
030.4.10.2 Checking the batteries
1550-1839; 030-96
030.4.10.3 Changing the travel direction rocker switch and cap
(optional) on the control lever
L550-1839; 030-98
030.4.11 Gearbox 030-100
030.4.11.1 Checking the transmission oil level
1550-1839; 030-100
030.4.11.2 Changing the transmission oil
L550-1839; 030-100
030.4.12 Axles and drive shafts 030-101
0304.12.11 Checking the axle oil levels
L 550-1839; 030-101
030.4.12.2 Changing the axle oil
1550-1839; 030-102
0304.12.3 Checking the cardan shafts
L550-1839; 030-104
030.4.12.4 Checking the tyre pressure
L550-1839; 030-104
0304.12.5 Checking the wheel tightness
1550-1839; 030-104
030.4.13 Steel parts of the basic machine 030-105
030.4.13.1 Lubricating the articulation bearing and the rear axle
oscillating bearing
L550-1839; 030-105
030.4.13.2 Covering – lubricating locks and hinges
1550-1839; 030-106
0304.13.3 Greasing the rear section cover lower hinges
L550-1839; 030-107
030.4.14 Working attachment 030-107
030.4.14.1 Lubricating the lift arms and attachment
L 550-1839; 030-107
030.4.14.2 Checking the bucket bearing seals and the bearing
bushings on the lift arms
L550-1839; 030-108
030.4.14.3 Checking the lift arm bucket stops
L 550-1839; 030-110
030.4.14.4 Lubricating and testing the quick-change device
L550-1839; 030-111
030.4.15 Operator’s cab, heating and air conditioning 030-112
030.4.15.1 Cleaning the fresh and recirculated air filters
L550-1839; 030-112
copyright ® Liebher-Werk Bischofshofen GmbH 2018
14 LIEBHERR L550-1839
030.4.5.1 Checking the coolant level
L 550-1839; 030-71
030.4.5.2 Checking the coolant antifreeze and corrosion inhib-
itor concentration
1550-1839; 030-72
030.4.5.3 Cleaning the cooling system
L 550-1839; 030-76
030.4.5.4 Changing the coolant
1550-1839; 030-77
0304.6 Working hydraulics 030-80
030.4.6.1 Lubricating the solenoids, universal joints and
tappets on the pilot control unit
L 550-1839; 030-80
0304.7 Hydraulic components 030-80
030.4.7.1 Checking the oil level in the hydraulic tank
1550-1839; 030-80
030.4.7.2 Checking and cleaning the magnetic rod on the
hydraulic tank
L 550-1839; 030-82
030.4.7.3 Draining off condensate and sediment from the
hydraulic tank
L 550-1839; 030-83
030.4.7.4 Hydraulic tank – changing the return-suction filter
L 550-1839; 030-84
030.4.7.5 Changing the hydraulic tank breather filter
L 550-1839; 030-85
030.4.7.6 Hydraulic tank – changing the oil in the hydraulic
system
1550-1839; 030-86
0304.8 Steering system 030-88
030.4.8.1 Testing the steering
L 550-1839; 030-88
030.4.8.2 Lubricating the bearing points on the steering cylin-
ders
1550-1839; 030-88
0304.9 Brake system 030-89
030.4.9.1 Testing the service brake and parking brake
L 550-1839; 030-89
030.4.9.2 Checking the service brake discs for wear
1550-1839; 030-90
030.4.9.3 Checking the gap and wear on the parking brake
linings
L 550-1839; 030-92
030.4.10 Electrical system 030-96
copyright ® Liebherr-Werk Bischofshofen GmbH 2018
1550-1839 LIEBHERR 13
Contents Service manual
030.4.10.1 Checking the lights
L550-1839; 030-96
030.4.10.2 Checking the batteries
1550-1839; 030-96
030.4.10.3 Changing the travel direction rocker switch and cap
(optional) on the control lever
L550-1839; 030-98
030.4.11 Gearbox 030-100
030.4.11.1 Checking the transmission oil level
1550-1839; 030-100
030.4.11.2 Changing the transmission oil
L550-1839; 030-100
030.4.12 Axles and drive shafts 030-101
0304.12.11 Checking the axle oil levels
L 550-1839; 030-101
030.4.12.2 Changing the axle oil
1550-1839; 030-102
0304.12.3 Checking the cardan shafts
L550-1839; 030-104
030.4.12.4 Checking the tyre pressure
L550-1839; 030-104
0304.12.5 Checking the wheel tightness
1550-1839; 030-104
030.4.13 Steel parts of the basic machine 030-105
030.4.13.1 Lubricating the articulation bearing and the rear axle
oscillating bearing
L550-1839; 030-105
030.4.13.2 Covering – lubricating locks and hinges
1550-1839; 030-106
0304.13.3 Greasing the rear section cover lower hinges
L550-1839; 030-107
030.4.14 Working attachment 030-107
030.4.14.1 Lubricating the lift arms and attachment
L 550-1839; 030-107
030.4.14.2 Checking the bucket bearing seals and the bearing
bushings on the lift arms
L550-1839; 030-108
030.4.14.3 Checking the lift arm bucket stops
L 550-1839; 030-110
030.4.14.4 Lubricating and testing the quick-change device
L550-1839; 030-111
030.4.15 Operator’s cab, heating and air conditioning 030-112
030.4.15.1 Cleaning the fresh and recirculated air filters
L550-1839; 030-112
copyright ® Liebher-Werk Bischofshofen GmbH 2018
14 LIEBHERR L550-1839
LBHM2242499/01/211-20180913_080808/en
LBH/M2242499/01/211-20180913_080808/en
LBH/M2242499/01/211-20180913_080808/en
Service manual
Contents
030.4.15.2 Changing the fresh and recirculated air filters
L 550-1839; 030-114
030.4.15.3 Checking the condition and function of the safety belt
1550-1839; 030-115
030.4.15.4 Checking and topping up the windscreen washer
reservoir
L 550-1839; 030-115
030.4.15.5 Checking the seals on the driver’s cab
L 550-1839; 030-116
030.4.15.6 Checking the indicator bead in the air conditioning
dryer-collector unit
1550-1839; 030-116
030.4.15.7 Heating and air conditioning unit: Testing the function
L 550-1839; 030-117
030.4.16 Lubrication system 030-118
030.4.16.1 Checking the lubrication system grease reservoir
level
1550-1839; 030-118
030.4.16.2 Checking the pipes, hoses and lubrication points of
the lubrication system
L 550-1839; 030-119
030.4.16.3 Checking whether metered quantities are adequate
at the bearing points (grease collars) of the lubrica-
tion system
L 550-1839; 030-119
030.5 Testing and adjustment checklist
L 550-1839; 030-121
030.5.1 Saving pages from the adjustment checklist 030-126
030.6 Testing and adjustment tasks 030-127
030.6.1 Safety precautions
1550-1839; 030-127
030.6.2 Overall machine 030-128
030.6.2.1 Preparatory tasks for testing and adjustment
L 550-1839; 030-128
030.6.2.2 Bringing the machine up to operating temperature
1550-1839; 030-129
0306.3 Drive group 030-130
030.6.3.1 Inch/brake pedal calibration
L 550-1839; 030-130
030.6.3.2 Checking the engine speed
1550-1839; 030-130
030.6.3.3 Reading the diesel engine service files
1550-1839; 030-131
0306.4 Cooling system 030-133
L 550-1839; 030-114
030.4.15.3 Checking the condition and function of the safety belt
1550-1839; 030-115
030.4.15.4 Checking and topping up the windscreen washer
reservoir
L 550-1839; 030-115
030.4.15.5 Checking the seals on the driver’s cab
L 550-1839; 030-116
030.4.15.6 Checking the indicator bead in the air conditioning
dryer-collector unit
1550-1839; 030-116
030.4.15.7 Heating and air conditioning unit: Testing the function
L 550-1839; 030-117
030.4.16 Lubrication system 030-118
030.4.16.1 Checking the lubrication system grease reservoir
level
1550-1839; 030-118
030.4.16.2 Checking the pipes, hoses and lubrication points of
the lubrication system
L 550-1839; 030-119
030.4.16.3 Checking whether metered quantities are adequate
at the bearing points (grease collars) of the lubrica-
tion system
L 550-1839; 030-119
030.5 Testing and adjustment checklist
L 550-1839; 030-121
030.5.1 Saving pages from the adjustment checklist 030-126
030.6 Testing and adjustment tasks 030-127
030.6.1 Safety precautions
1550-1839; 030-127
030.6.2 Overall machine 030-128
030.6.2.1 Preparatory tasks for testing and adjustment
L 550-1839; 030-128
030.6.2.2 Bringing the machine up to operating temperature
1550-1839; 030-129
0306.3 Drive group 030-130
030.6.3.1 Inch/brake pedal calibration
L 550-1839; 030-130
030.6.3.2 Checking the engine speed
1550-1839; 030-130
030.6.3.3 Reading the diesel engine service files
1550-1839; 030-131
0306.4 Cooling system 030-133
030.6.4.1 Fan gear motor proportional pressure relief valve
L550-1839; 030-133
Working hydraulics 030-136
030.6.5.1 Working hydraulics pump flow regulator (standby
Working hydraulics 030-136
030.6.5.1 Working hydraulics pump flow regulator (standby
pressure)
1550-1839; 030-136
030.6.5.2 Working hydraulics pump, power regulator
030.6.5.2 Working hydraulics pump, power regulator
L550-1839; 030-137
0306.5.3 Z kinematics control valve block secondary pressure
0306.5.3 Z kinematics control valve block secondary pressure
relief valves
1550-1839; 030-139
030.6.5.4 Z kinematics control valve block primary pressure
030.6.5.4 Z kinematics control valve block primary pressure
relief valve
1550-1839; 030-141
030.6.5.5 Z-bar kinematics control block, LS-pressure cut-off
030.6.5.5 Z-bar kinematics control block, LS-pressure cut-off
L550-1839; 030-142
0306.5.6 Industrial lift arm control valve block secondary pres-
0306.5.6 Industrial lift arm control valve block secondary pres-
sure relief valves
1550-1839; 030-143
030.6.5.7 Industrial lift arm control block, primary pressure
030.6.5.7 Industrial lift arm control block, primary pressure
relief valve
1550-1839; 030-145
030.6.5.8 Industrial lift arm control block, LS-pressure cut-off
030.6.5.8 Industrial lift arm control block, LS-pressure cut-off
1550-1839; 030-146
0306.5.9 Stabilisation module (optional), cut-off function
0306.5.9 Stabilisation module (optional), cut-off function
1550-1839; 030-147
030.6.5.10 Ride control hydro accumulator (optional), nitrogen
030.6.5.10 Ride control hydro accumulator (optional), nitrogen
filling
L550-1839; 030-148
030.6.5.11 Testing the Z kinematics control valve block for
030.6.5.11 Testing the Z kinematics control valve block for
leakage
1550-1839; 030-150
Hydraulic components 030-153
030.6.6.1 Checking the hydraulic lines for damage
Hydraulic components 030-153
030.6.6.1 Checking the hydraulic lines for damage
L550-1839; 030-153
Travel hydraulics 030-158
030.6.7.1 Travel pump replenishing pressure relief valve
Travel hydraulics 030-158
030.6.7.1 Travel pump replenishing pressure relief valve
1550-1839; 030-158
030.6.7.2 Travel pump high pressure relief valves
030.6.7.2 Travel pump high pressure relief valves
L550-1839; 030-159
030.6.7.3 Travel pump pressure cut-off
030.6.7.3 Travel pump pressure cut-off
1550-1839; 030-162
030.6.7.4 Travel pump block curve calibration
030.6.7.4 Travel pump block curve calibration
1550-1839; 030-163
030.6.7.5 Travel motor 1 start of regulation
030.6.7.5 Travel motor 1 start of regulation
L 550-1839; 030-165
16
copyright ® Liebher-Werk Bischofshofen GmbH 2018
LIEBHERR L550-1839
LBHM2242499/01/211-20180913_080808/en
Service manual Contents
Service manual Contents
030.6.7.6 Automatic calibration of travel motor 2
L550-1839; 030-167
030.6.7.7 Engine output
1550-1839; 030-168
0306.8 Steering system 030-169
030.6.8.1 Steering system LS pressure cut-off valve
L550-1839; 030-169
0306.9 Brake system 030-170
030.6.9.1 Compact brake valve, hydro accumulator charging
function
1550-1839; 030-170
030.6.9.2 Service brake pressure
L550-1839; 030-172
030.6.9.3 Service brake hydro accumulator capacity
L550-1839; 030-173
030.6.9.4 Accumulator charge pressure switch shift pressure
L 550-1839; 030-174
0306.10 Electrical system 030-175
030.6.10.1 Central control unit (UEC3) Creating a Servicefile
L550-1839; 030-175
030.6.10.2 Repairing the Tuple Chain on the central control unit
(UEC3)
L 550-1839; 030-176
030.6.10.3 Resetting central control unit (UEC3)
L550-1839; 030-182
030.6.11 Gearbox 030-187
030.6.11.1 Transmission hydro accumulator nitrogen filling
1550-1839; 030-187
040 Drive group 040-1
040.1 Engine 040-2
040.1.1 Engine: General overview
– 1550-1839; 040-2
g 040.1.2 Fuel system 040-4
o 040.1.2.1 Overview of the fuel system
g L550-1839; 040-5
a
8 040.1.2.2 Fuel level sensor
g 1550-1839; 040-7
g 040.1.2.3 Fuel pre-filter
ES L 550-1839; 040-8
040.1.2.4 Separ fuel pre-filter
1550-1839; 040-9
030.6.7.7 Engine output
1550-1839; 030-168
0306.8 Steering system 030-169
030.6.8.1 Steering system LS pressure cut-off valve
L550-1839; 030-169
0306.9 Brake system 030-170
030.6.9.1 Compact brake valve, hydro accumulator charging
function
1550-1839; 030-170
030.6.9.2 Service brake pressure
L550-1839; 030-172
030.6.9.3 Service brake hydro accumulator capacity
L550-1839; 030-173
030.6.9.4 Accumulator charge pressure switch shift pressure
L 550-1839; 030-174
0306.10 Electrical system 030-175
030.6.10.1 Central control unit (UEC3) Creating a Servicefile
L550-1839; 030-175
030.6.10.2 Repairing the Tuple Chain on the central control unit
(UEC3)
L 550-1839; 030-176
030.6.10.3 Resetting central control unit (UEC3)
L550-1839; 030-182
030.6.11 Gearbox 030-187
030.6.11.1 Transmission hydro accumulator nitrogen filling
1550-1839; 030-187
040 Drive group 040-1
040.1 Engine 040-2
040.1.1 Engine: General overview
– 1550-1839; 040-2
g 040.1.2 Fuel system 040-4
o 040.1.2.1 Overview of the fuel system
g L550-1839; 040-5
a
8 040.1.2.2 Fuel level sensor
g 1550-1839; 040-7
g 040.1.2.3 Fuel pre-filter
ES L 550-1839; 040-8
040.1.2.4 Separ fuel pre-filter
1550-1839; 040-9
copyright ® Liebherr-Werk Bischofshofen GmbH 2018
L550-1839 LIEBHERR 17
Contents Service manual
040.1.2.5 Fuel fine filter
L550-1839; 040-10
040.1.3 Air filter system 040-10
040.1.3.1 Overview of the air filter unit
L550-1839; 040-10
040.1.3.2 Air filter
L550-1839; 040-12
040.1.3.3 Air filter vacuum switch
L550-1839; 040-13
040.1.4 Exhaust system 040-13
040.1.4.1 Overview of the exhaust system
1550-1839; 040-14
040.2 Clutch
L550-1839; 040-15
050 Cooling system 050-1
050.1 Overview of the cooling system
L550-1839; 050-2
050.2 Cooling system hydraulics 050-4
050.2.1 Overview of the hydraulics cooling system
1550-1839; 0504
050.22 Fan gear pump
L550-1839; 050-6
050.2.3 Fan gear motor
L550-1839; 050-7
050.3 Cooling system electronics 050-11
050.3.1 Electronic control system — general overview
1550-1839; 050-11
050.3.2 Hydraulic oil temperature sensor
L550-1839; 050-12
060 Working hydraulics 060-1
0680.1 Overview of z kinematics working hydraulics
L550-1839; 060-2
060.2 Working hydraulics pump
L550-1839; 060-7
060.3 Control valve block for Z-bar kinematics
L550-1839; 060-14
060.4 Pilot control 060-16
060.4.1 Overview of the pilot control unit
1550-1839; 060-16
060.4.2 Pilot control unit
L550-1839; 060-17
copyright ® Liebher-Werk Bischofshofen GmbH 2018
18 LIEBHERR 1550-1839
Contents Service manual
040.1.2.5 Fuel fine filter
L550-1839; 040-10
040.1.3 Air filter system 040-10
040.1.3.1 Overview of the air filter unit
L550-1839; 040-10
040.1.3.2 Air filter
L550-1839; 040-12
040.1.3.3 Air filter vacuum switch
L550-1839; 040-13
040.1.4 Exhaust system 040-13
040.1.4.1 Overview of the exhaust system
1550-1839; 040-14
040.2 Clutch
L550-1839; 040-15
050 Cooling system 050-1
050.1 Overview of the cooling system
L550-1839; 050-2
050.2 Cooling system hydraulics 050-4
050.2.1 Overview of the hydraulics cooling system
1550-1839; 0504
050.22 Fan gear pump
L550-1839; 050-6
050.2.3 Fan gear motor
L550-1839; 050-7
050.3 Cooling system electronics 050-11
050.3.1 Electronic control system — general overview
1550-1839; 050-11
050.3.2 Hydraulic oil temperature sensor
L550-1839; 050-12
060 Working hydraulics 060-1
0680.1 Overview of z kinematics working hydraulics
L550-1839; 060-2
060.2 Working hydraulics pump
L550-1839; 060-7
060.3 Control valve block for Z-bar kinematics
L550-1839; 060-14
060.4 Pilot control 060-16
060.4.1 Overview of the pilot control unit
1550-1839; 060-16
060.4.2 Pilot control unit
L550-1839; 060-17
copyright ® Liebher-Werk Bischofshofen GmbH 2018
18 LIEBHERR 1550-1839
LBHM2242499/01/211-20180913_080808/en
Service manual Contents
Service manual Contents
060.4.3 Working hydraulics lockout solenoid valve
L550-1839; 060-22
0604.4 Pilot control hydro accumulator
1550-1839; 060-23
060.5 Ride control 060-24
060.5.1 Ride control overview
L550-1839; 060-24
0605.2 Stabilisation module
L 550-1839; 060-25
060.5.3 Ride control hydro accumulator
L 550-1839; 060-30
070 Travel hydraulics 070-1
070.1 Travel hydraulics overview
1550-1839; 070-2
070.2 Travel pump
1550-1839; 070-7
070.3 Travel motors 070-21
070.3.1 Overview of the travel motors
L550-1839; 070-21
070.3.2 Travel motor 1
L 550-1839; 070-23
070.3.3 Travel motor 2
1550-1839; 070-30
070.3.4 Travel motor scavenging gear pump
L550-1839; 070-36
080 Hydraulic components 080-1
080.1 Hydraulic tank 080-2
080.1.1 Overview of the hydraulic tank
L550-1839; 080-2
080.1.2 Filter unit
5 L550-1839; 080-4
@
g 080.1.3 Breather filter
o L 550-1839; 080-6
§ .
§ 090 Steering system 090-1
g 090.1 Steering system overview
g L550-1839; 090-2
& 090.2 Priority valve
1550-1839; 090-6
090.3 Servostat
L550-1839; 090-10
0604.4 Pilot control hydro accumulator
1550-1839; 060-23
060.5 Ride control 060-24
060.5.1 Ride control overview
L550-1839; 060-24
0605.2 Stabilisation module
L 550-1839; 060-25
060.5.3 Ride control hydro accumulator
L 550-1839; 060-30
070 Travel hydraulics 070-1
070.1 Travel hydraulics overview
1550-1839; 070-2
070.2 Travel pump
1550-1839; 070-7
070.3 Travel motors 070-21
070.3.1 Overview of the travel motors
L550-1839; 070-21
070.3.2 Travel motor 1
L 550-1839; 070-23
070.3.3 Travel motor 2
1550-1839; 070-30
070.3.4 Travel motor scavenging gear pump
L550-1839; 070-36
080 Hydraulic components 080-1
080.1 Hydraulic tank 080-2
080.1.1 Overview of the hydraulic tank
L550-1839; 080-2
080.1.2 Filter unit
5 L550-1839; 080-4
@
g 080.1.3 Breather filter
o L 550-1839; 080-6
§ .
§ 090 Steering system 090-1
g 090.1 Steering system overview
g L550-1839; 090-2
& 090.2 Priority valve
1550-1839; 090-6
090.3 Servostat
L550-1839; 090-10
copyright ® Liebherr-Werk Bischofshofen GmbH 2018
L550-1839 LIEBHERR 19
Contents Service manual
Contents Service manual
090.4 Steering cylinder 090-14
090.4.1 Steering cylinder overview
L 550-1839; 090-14
090.4.2 Steering cylinder pressure relief valve
L 550-1839; 090-15
090.4.3 Steering damper hydro accumulator
L 550-1839; 090-16
090.5 Emergency steering 090-17
090.5.1 Emergency steering overview
L 550-1839; 090-17
090.5.2 Emergency steering pump
L 550-1839; 090-18
090.5.3 Emergency steering electronics 090-19
090.5.3.1 Electronic control system — general overview
1550-1839; 090-20
090.5.3.2 Emergency steering pressure switch
1550-1839; 090-21
090.5.3.3 Emergency steering check pressure switch
L550-1839; 090-22
090.54 Valve block
L 550-1839; 090-23
100 Brake system 100-1
100.1 Overview of the brake system
L 550-1839; 100-2
100.2 Service brake and parking brake 100-5
100.2.1 Brake system gear pump
L 550-1839; 100-5
100.2.2 Compact brake valve
L 550-1839; 100-6
100.3 Service brake 100-13
100.3.1 Overview of the service brake
1550-1839; 100-13
100.3.2 Service brake hydro accumulator
L 550-1839; 100-16
100.3.3 Brake light pressure switch
L 550-1839; 100-17
100.3.4 Accumulator charge pressure switch
L550-1839; 100-18
100.4 Parking brake 100-19
090.4.1 Steering cylinder overview
L 550-1839; 090-14
090.4.2 Steering cylinder pressure relief valve
L 550-1839; 090-15
090.4.3 Steering damper hydro accumulator
L 550-1839; 090-16
090.5 Emergency steering 090-17
090.5.1 Emergency steering overview
L 550-1839; 090-17
090.5.2 Emergency steering pump
L 550-1839; 090-18
090.5.3 Emergency steering electronics 090-19
090.5.3.1 Electronic control system — general overview
1550-1839; 090-20
090.5.3.2 Emergency steering pressure switch
1550-1839; 090-21
090.5.3.3 Emergency steering check pressure switch
L550-1839; 090-22
090.54 Valve block
L 550-1839; 090-23
100 Brake system 100-1
100.1 Overview of the brake system
L 550-1839; 100-2
100.2 Service brake and parking brake 100-5
100.2.1 Brake system gear pump
L 550-1839; 100-5
100.2.2 Compact brake valve
L 550-1839; 100-6
100.3 Service brake 100-13
100.3.1 Overview of the service brake
1550-1839; 100-13
100.3.2 Service brake hydro accumulator
L 550-1839; 100-16
100.3.3 Brake light pressure switch
L 550-1839; 100-17
100.3.4 Accumulator charge pressure switch
L550-1839; 100-18
100.4 Parking brake 100-19
100.4.1 Overview of the parking brake
1550-1839; 100-19
1550-1839; 100-19
copyright ® Liebher-Werk Bischofshofen GmbH 2018
20 LIEBHERR L550-1839
LBHM2242499/01/211-20180913_080808/en
LBH/M2242499/01/211-20180913_080808/en
LBH/M2242499/01/211-20180913_080808/en
Service manual
Contents
100.4.2 Disc brake
L550-1839; 100-22
100.4.3 Parking brake hydro accumulator
1550-1839; 100-23
110 Electrical system 110-1
110.1 Overview of the electrical system
1550-1839; 110-2
110.2 Lighting
1550-1839; 110-6
110.3 Circuit diagrams
1550-1839; 110-8
110.4 Electronic control unit 110-10
110.4.1 Overview of the electronic control system
L550-1839; 110-10
110.4.2 Central control unit (UEC3)
1550-1839; 110-12
110.5 Electrical components of the driver’s cab 110-17
110.5.1 Fuse and relay board
L550-1839; 110-17
110.6 Electrical components in the rear section 110-21
110.6.1 Battery installation
L550-1839; 110-21
120 Gearbox 120-1
120.1 Overview of the transmission
1550-1839; 120-2
120.2 Mechanical transmission
1550-1839; 120-3
120.3 Transmission hydraulics 120-9
120.3.1 Overview of the hydraulic control system
L550-1839; 120-9
120.4 Transmission electronics 120-13
120.41 Overview of the electronic control system
L550-1839; 120-13
120.4.2 Output speed sensor and travel motor 2 speed sensor
L 550-1839; 120-14
120.4.3 Coupling pressure switch
L550-1839; 120-15
140 Steel parts of the basic machine 140-1
140.1 Vehicle frame 140-2
copyright ® Liebherr-Werk Bischofshofen GmbH 2018
1550-1839 LIEBHERR 21
Contents Service manual
140.1.1 Articulation bearing
L550-1839; 140-2
140.1.2 Articulation lock
1550-1839; 140-3
150 Working attachment 150-1
150.1 Lift arms for Z kinematics 150-2
150.1.1 Pin bearing 150-2
150.1.1.1 Z kinematics standard pin bearing
L550-1839; 150-2
150.1.1.2 Z kinematics bucket pin bearing
1550-1839; 150-3
150.2 Quick coupler 150-4
160.2.1 Z kinematics quick coupler
1550-1839; 150-4
160 Operator’s cab, heating and air conditioning 160-1
160.1 Overview of the cab, heating and air conditioning unit
L550-1839; 160-3
160.2 Display and control elements 160-5
160.2.1 Electrical components in the control panel 160-5
160.2.1.1 Overview of electrical components in the control
panel
L550-1839; 160-5
160.2.1.2 Control unit for main functions
1550-1839; 160-6
160.2.1.3 Starter switch
L550-1839; 160-8
160.2.2 Display
L550-1839; 160-9
160.2.3 Control lever
L550-1839; 160-10
160.3 Heating, ventilation, air conditioning 160-12
160.3.1 Overview of the heating, ventilation and air conditioning system
1550-1839; 160-12
160.3.2 Heating and air conditioning unit 160-15
160.3.2.1 Heater/blower unit
1550-1839; 160-15
160.3.2.2 Blower
1550-1839; 160-18
160.4 Air conditioning 160-1
100.4.3 Parking brake hydro accumulator
1550-1839; 100-23
110 Electrical system 110-1
110.1 Overview of the electrical system
1550-1839; 110-2
110.2 Lighting
1550-1839; 110-6
110.3 Circuit diagrams
1550-1839; 110-8
110.4 Electronic control unit 110-10
110.4.1 Overview of the electronic control system
L550-1839; 110-10
110.4.2 Central control unit (UEC3)
1550-1839; 110-12
110.5 Electrical components of the driver’s cab 110-17
110.5.1 Fuse and relay board
L550-1839; 110-17
110.6 Electrical components in the rear section 110-21
110.6.1 Battery installation
L550-1839; 110-21
120 Gearbox 120-1
120.1 Overview of the transmission
1550-1839; 120-2
120.2 Mechanical transmission
1550-1839; 120-3
120.3 Transmission hydraulics 120-9
120.3.1 Overview of the hydraulic control system
L550-1839; 120-9
120.4 Transmission electronics 120-13
120.41 Overview of the electronic control system
L550-1839; 120-13
120.4.2 Output speed sensor and travel motor 2 speed sensor
L 550-1839; 120-14
120.4.3 Coupling pressure switch
L550-1839; 120-15
140 Steel parts of the basic machine 140-1
140.1 Vehicle frame 140-2
copyright ® Liebherr-Werk Bischofshofen GmbH 2018
1550-1839 LIEBHERR 21
Contents Service manual
140.1.1 Articulation bearing
L550-1839; 140-2
140.1.2 Articulation lock
1550-1839; 140-3
150 Working attachment 150-1
150.1 Lift arms for Z kinematics 150-2
150.1.1 Pin bearing 150-2
150.1.1.1 Z kinematics standard pin bearing
L550-1839; 150-2
150.1.1.2 Z kinematics bucket pin bearing
1550-1839; 150-3
150.2 Quick coupler 150-4
160.2.1 Z kinematics quick coupler
1550-1839; 150-4
160 Operator’s cab, heating and air conditioning 160-1
160.1 Overview of the cab, heating and air conditioning unit
L550-1839; 160-3
160.2 Display and control elements 160-5
160.2.1 Electrical components in the control panel 160-5
160.2.1.1 Overview of electrical components in the control
panel
L550-1839; 160-5
160.2.1.2 Control unit for main functions
1550-1839; 160-6
160.2.1.3 Starter switch
L550-1839; 160-8
160.2.2 Display
L550-1839; 160-9
160.2.3 Control lever
L550-1839; 160-10
160.3 Heating, ventilation, air conditioning 160-12
160.3.1 Overview of the heating, ventilation and air conditioning system
1550-1839; 160-12
160.3.2 Heating and air conditioning unit 160-15
160.3.2.1 Heater/blower unit
1550-1839; 160-15
160.3.2.2 Blower
1550-1839; 160-18
160.4 Air conditioning 160-1
160.4.1 Air conditioning (optional)
L550-1839; 160-19
160.4.2 Condenser
1550-1839; 160-22
160.4.3 Dryer
L550-1839; 160-22
160.4.4 Evaporator
L 550-1839; 160-24
170 Lubrication system 170-1
170.1 Liebherr automatic central lubrication system 170-2
170.1.1 Overview of Liebherr automatic central lubrication system
L550-1839; 170-2
170.1.2 Liebherr central lubrication pump
L550-1839; 170-6
170.1.3 Progressive distributor MX-F
1550-1839; 170-10
200 Diagnosis 200-1
200.1 Malfunctions 200-2
200.1.1 Warning symbols 200-2
200.1.2 Service code indicator in the display 200-2
200.2 Troubleshooting 200-5
200.2.1 Replacing fuses 200-5
200.2.1.1 Fuses in the battery compartment 200-5
200.2.1.2 Plug-in fuses on the relay and fuse board 200-6
L550-1839; 160-19
160.4.2 Condenser
1550-1839; 160-22
160.4.3 Dryer
L550-1839; 160-22
160.4.4 Evaporator
L 550-1839; 160-24
170 Lubrication system 170-1
170.1 Liebherr automatic central lubrication system 170-2
170.1.1 Overview of Liebherr automatic central lubrication system
L550-1839; 170-2
170.1.2 Liebherr central lubrication pump
L550-1839; 170-6
170.1.3 Progressive distributor MX-F
1550-1839; 170-10
200 Diagnosis 200-1
200.1 Malfunctions 200-2
200.1.1 Warning symbols 200-2
200.1.2 Service code indicator in the display 200-2
200.2 Troubleshooting 200-5
200.2.1 Replacing fuses 200-5
200.2.1.1 Fuses in the battery compartment 200-5
200.2.1.2 Plug-in fuses on the relay and fuse board 200-6
VIDEO PREVIEW OF THE MANUAL:
IMAGES PREVIEW OF THE MANUAL:
PLEASE NOTE:
- This is the same manual used by the dealers to diagnose and troubleshoot your vehicle
- You will be directed to the download page as soon as the purchase is completed. The whole payment and downloading process will take anywhere between 2-5 minutes
- Need any other service / repair / parts manual, please feel free to contact [email protected] . We still have 50,000 manuals unlisted
S.V
