Liebherr Wheel loaders L 550-1756 Service manual – PDF DOWNLOAD

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Liebherr Wheel loaders L 550-1756 Service manual – PDF DOWNLOAD

Language : English
Pages :996
Downloadable : Yes
File Type : PDF
Size:221 MB

DESCRIPTION:

Liebherr Wheel loaders L 550-1756 Service manual – PDF DOWNLOAD

PrefaceNotes 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”.

Introduction:

Intended Use:1.1. Laws, Rules, Guidelines and Safety Regulations

To ensure safe operation:

• Consult with the worksite manager about safety regulations at the place of use.
• Adhere to safety regulations at the place of use.
• Follow traffic regulations.
• Adhere to valid guidelines provided by insurers (for example, employers’ professional liability insurance companies, accident insurance, etc.).
• Avoid working methods that can endanger safety.
• Follow all intervals specified for recurrent checks and inspections as outlined in this operator’s manual.

1.2. Intended Use of Wheel Loader

The wheel loader is used to pick up, move, and dump the following materials:

• Soil
• Stones
• Broken rocks
• Bulk materials

This applies to a standard machine under normal operating conditions. Special applications are described in a separate options operator’s manual.

To ensure the intended use:

• Adhere to the operator’s manual.
• Follow maintenance intervals.
• Carry out inspection and maintenance tasks.
• Follow the specifications in the technical data.
• When using the machine on public roads, ensure it complies with applicable national regulations.
• Only lift loads with intended working attachments (fork prongs, crane boom), which must be properly fitted and functioning.
• Ensure that machines used underground (for mining and tunnel construction) are fitted with systems to reduce exhaust emissions (such as diesel particulate filters).
• Adhere to the requirements of each individual country for underground operation.
• For special uses, use special working attachments and, if necessary, special safety equipment.
• Exclusively mount and use special working attachments with approval and as per the stipulations of the manufacturer of the basic machine.

TABLE OF CONTENTS:

Liebherr Wheel loaders L 550-1756 Service manual – PDF DOWNLOAD

010 Introduction 010-1
010.1 Safety instructions 010-4
010.1.1 Information on these instructions 010-4
010.1.1.1 Representation of warning messages 010-4
010.1.1.2 Graphic symbols in these instructions 010-4
010.1.2 Intended use 010-5
010.1.2.1 Laws, rules, guidelines and safety regulations 010-5
010.1.2.2 Intended use 010-5
010.1.2.3 Foreseeable misuse 010-6
010.1.2.4 Operating conditions 010-6
010.1.2.5 Disposal 010-7
010.1.3 Description of staff 010-7
010.1.3.1 Personal protective equipment 010-7
010.1.3.2 Requirements for staff 010-8
010.1.3.3 Operating company 010-8
010.1.3.4 Operator 010-9
010.1.3.5 Maintenance staff 010-9
010.1.3.6 Refrigeration technician 010-10
010.1.3.7 Slinger 010-11
010.1.3.8 Spotter 010-12
010.1.4 Protective devices on the machine 010-12
010.1.4.1 Operator’s cab 010-12 ..,.
010.1.4.2 Roll over protective structure (ROPS) 010-13 ~
010.1.4.3 Falling object protective structures (FOPS) 010-13
010.1.5 Emergency equipment on the machine 010-13 52
010.1.5.1 Emergency exit (standard) 010-13 “”” I~D 010.1.5.2 Fire extinguisher (option) 010-14
010.1.6 Safe operation 010-14
010.1.6.1 Intoxicants 010-14
010.1.6.2 Dangerous fuels and operating fluids 010-14
010.1.6.3 Transporting machine 010-15
010.1.6.4 Access to machine 010-15
010.1.6.5 Machine danger zone 010-16
010.1.6.6 Visibility 010-16
010.1.6.7 Protection against vibration 010-17
010.1.6.8 Operation of machine 010-18
010.1.7 Safe maintenance 010-21
010.1.7.1 Spare parts 010-21
010.1.7.2 Heavy parts 010-21
010.1.7.3 Regular checks 010-22
010.1.8 Modifications to the machine 010-22
010.1.8.1 Modifications, add-ons and retrofittings 010-22
010.2 Special tools for maintenance and repair work 010-23
010.2.1 Special tools, general 010-23
010.2.2 Special tools for the diesel engine 010-25
010.2.3 Special tools for lift cylinders with Z kinematics 010-29
010.2.4 Special tools for tilt cylinders with Z kinematics 010-29
010.2.5 Special tools for lift cylinders with industrial lift arms 010-30
010.2.6 Special tools for tilt cylinders with industrial lift arms 010-31
010.2.7 Special tools for steering wheel 010-31
010.2.8 Special tools for steering cylinders 010-32
010.2.9 Special tools for the electrical system 010-32
010.2.10 Special tools for the transmission 010-33
010.2.11 Special tools for front axle 010-34
010.2.12 Special tools for rear axle 010-35
010.2.13 Special tools for the air conditioning system 010-35 C: .!l
010.2.14 Special tools for Grammer driver’s seat 010-36
010.2.15 Special tools for cab glazing 010-37
010.2.16 Special tools for the central lubrication system (Liebherr) 010-37 ~
010.3 Standards and regulations 52
010.3.1 Prestressing forces and tightening torques for bolts with metric “‘ ~ standard and fine threads as per DIN ISO 261 010-38 ID
010.3.1.1 Range of application and purpose 010-38
010.3.1.2 Other applicable documents 010-38
010.3.2 Liebherr standards for assembly instructions and tightening torqueso10-45
010.4 Preservation guidelines
010.4.1 General information
010.4.2 Machine out of service for an unknown period of time
010.4.3 Putting the machine out of service
Out of service for up to 2 months
Out of service for up to 12 months
Out of service for longer than 12 months
010.4.4 Putting back into service
After being out of service for 2 months
After being out of service for 12 months
010.4.4.3 After being out of service for longer than 12 months 010-50
010.5 Preservation guidelines for the SCR system
010.5.1 Putting out of service for longer than 2 months
010.5.2 Starting up after being out of service for longer than 2 months
020 Technical data 020-1
020.1 Overall machine
020.1.1 Complete machine with bucket (Z lift arms)
020.1.2 Complete machine with loading bucket (industrial lift arms)
020.1.3 Working attachment: light material bucket
020.1.4 Working attachment: high dump bucket
020.1.5 Working attachment: forklift
020.1.6 Working attachment: log grappler
020.2 Drive group
020.2.1 Diesel engine
020.2.2 Fuel tank
020.2.3 Fuel level sensor
020.2.4 Fuel pre-filter (separator filter)
L550-1756; 020-16
020.2.5 Compressed air system
L550-1756; 020-17
020.3 Cooling system 020-18
020.3.1 Fan pump
L550-1756; 020-18
020.3.2 Fan motor
L550-1756; 020-18
020.3.3 Hydraulic oil temperature sensor B8
L550-1756; 020-18
020.4 Working hydraulics 020-19
020.4.1 Working pump
L550-1756; 020-19
020.4.2 Control valve block for Z kinematics
L550-1756; 020-19
020.4.3 Control valve block for industrial lift arms
L550-1756; 020-20
020.4.4 Pilot control valve block
L550-1756; 020-20
020.4.5 Pilot control hydro accumulator
L550-1756; 020-20
020.4.6 Stabilisation module
L550-1756; 020-21
020.4.7 Ride control hydro accumulator
L550-1756; 020-21
020.4.8 Z kinematics lift cylinder
L550-1756; 020-21
020.4.9 Z kinematics tilt cylinder
L550-1756; 020-21
020.4.10 Lift cylinder for industrial lift arms
L550-1756; 020-22
020.4.11 Tilt cylinder for industrial lift arms
L550-1756; 020-22 C: .!l
020.4.12 Pressure sensors for lift cylinders and tilt cylinders B90, B91, B92, “……,,.’…
020.6 Steering system 020-25
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Service manual Contents
020.6.1 Steering pump
L550-1756; 020-25
020.6.2 Servostat
L550-1756; 020-25
020.6.3 Steering cylinder
L550-1756; 020-25
020.6.4 Steering damper hydro accumulator
L550-1756; 020-26
020.6.5 Emergency steering pump
L550-1756; 020-26
020.6.6 Emergency steering pressure switch B3
L550-1756; 020-26
020.6.7 Emergency steering check pressure switch B3a
L550-1756; 020-26
020.6.8 Joystick steering control valve block
L550-1756; 020-27
020.7 Brake system 020-28
020.7.1 Brake pump
L550-1756; 020-28
020.7.2 Compact brake valve
L550-1756; 020-28
020.7.3 Service brake hydro accumulator
L550-1756; 020-28
020.7.4 Brake light pressure switch B12
L550-1756; 020-28
020.7.5 Brake accumulator pressure sensor B19
L550-1756; 020-29
020.7.6 Parking brake hydro accumulator
L550-1756; 020-29
020.8 Electrical system 020-30
020.8.1 Central control unit (Master5-Premium)
L550-1756; 020-30
020.8.2 Input module
020.9 Gearbox 020-32
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Contents Service manual
020.9.1 Transmission
L550-1756; 020-32
020.9.2 Filter bypass switch B85
L550-1756; 020-32
020.9.3 Proportional solenoid for gear shifting Y1, Y2, Y3, Y4, Y5, Y6
L550-1756; 020-32
020.9.4 Pressure sensor for hydrostat B80, B81
L550-1756; 020-33
020.9.5 Speed sensor B82, B83, B84
L550-1756; 020-33
020.9.6 Transmission oil temperature sensor B86
L550-1756; 020-33
020.9.7 Proportional solenoid for position control Y7
L550-1756; 020-34
020.10 Axles and drive shafts 020-35
020.10.1 Front axle
L550-1756; 020-35
020.10.2 Rear axle
L550-1756; 020-35
020.10.3 Cardan shaft between engine and transmission
L550-1756; 020-35
020.10.4 Cardan shaft between transmission and front axle
L550-1756; 020-36
020.10.5 Drive shaft between transmission and rear axle
L550-1756; 020-36
020.10.6 Tyres
L550-1756; 020-36
020.10.6.2 Tyres for timber work 020-37
020.10.6.3 Special tyres 020-38
020.11 Steel parts of the basic machine 020-39
020.11.1 Ballast weights
L550-1756; 020-39
020.11.1.1 Standard (Z kinematics) 020-39 C: .!l
020.11.1.2 Foam-filled tyres or tracks 020-39 “……,,.’…
020.11.1.3 Industrial lift arms and timber grabber 020-39
020.13.1.1 Air conditioning compressor 020-41
020.13.2 Air conditioning pressure switch
L550-1756; 020-41
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Service manual Contents
020.14 Lubrication system 020-42
020.14.1 Central lubrication system (Liebherr)
L550-1756; 020-42
020.14.1.1 Central lubrication pump 020-42
020.14.1.2 Progressive distributor 020-42
020.14.2 Progressive distributor
L550-1756; 020-43
020.14.2.1 MX-F 020-43
020.14. 2. 2 MX-F 25 020-43
020.14. 2. 3 MX-F 45 020-44
020.14.2.4 MX-F 75 020-44
020.14. 2. 5 MX-F105 020-44
020.14.3 Progressive distributor SXE-2
L550-1756; 020-44
020.14.3.1 SXE-2 / MX-F 020-44
020.14.3.2 SXE-2100 020-44
020.14.3.3 SXE-2150 020-45
020.14.3.4 SXE-2 220 020-45
020.14.3.5 SXE-2 400 020-45
020.14.3.6 SXE-2 760 020-45
030 Maintenance 030-1
General questions
Safety data sheets
Technical data sheets
Specific Liebherr standards
General information on changing lubricants and fuels
Converting hydraulic system from mineral oils to biodegradable
hydraulic fluids
Contents Service manual
030.3.4 Diesel fuels
L550-1756; 030-18
030.3.4.1 Minimum quality requirement 030-18
030.3.4.2 Operating temperatures of diesel fuels 030-19
030.3.4.3 Minimum quality requirement 030-19
030.3.5 Diesel exhaust fluid
L550-1756; 030-19
030.3.5.1 Liebherr recommendation 030-19
030.3.5.2 Minimum quality requirement 030-19
030.3.6 Engine oils
L550-1756; 030-20
030.3.6.1 Liebherr recommendation 030-20
030.3.6.2 Minimum quality requirement 030-20
030.3.6.3 Changing intervals 030-20
030.3.6.4 Complicating factors 030-21
030.3.7 Refrigerant
L550-1756; 030-21
030.3.8 Coolant
L550-1756; 030-22
030.3.8.1 Requirements for the water used 030-22
030.3.8.2 Antifreeze and corrosion inhibitor 030-22
030.3.8.3 Minimum quality requirement 030-22
030.3.9 Hydraulic oil
L550-1756; 030-22
030.3.9.1 Liebherr recommendation 030-22
030.3.9.2 Minimum quality requirement 030-23
030.3.9.3 Oil analysis 030-23
030.3.9.4 Oil change 030-23
030.3.10 Splitter box oil
L550-1756; 030-24 C: .!l
030.3.10.1 Liebherr recommendation “‘ 030-24
030.3.12 Axle oil
L550-1756; 030-25
030.3.12.1 Liebherr recommendation 030-25
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Service manual Contents
030.3.12.2 Minimum quality requirement 030-25
030.3.13 Lubrication grease
L550-1756; 030-25
030.3.13.1 Liebherr recommendation 030-25
030.3.13.2 Minimum quality requirement 030-25
030.3.14 Windscreen washer fluid
L550-1756; 030-26
030.3.14.1 Liebherr recommendation 030-26
030.3.14.2 Minimum quality requirement 030-26
030.3.15 Refrigerant oil for air conditioning compressor
L550-1756; 030-26
030.3.15.1 Liebherr recommendation 030-26
030.4 Maintenance tasks 030-27
030.4.1 Safety precautions
L550-1756; 030-27
030.4.2 Preparatory tasks for maintenance 030-27
030.4.2.1 Maintenance positions
L550-1756; 030-28
030.4.2.2 Opening the service hatches
L550-1756; 030-29
030.4.2.3 Turning off the battery main switch
L550-1756; 030-33
030.4.3 Overall machine 030-34
030.4.3.1 Checking machine is in proper condition
L550-1756; 030-34
030.4.3.2 Removing loose parts, dirt, ice and snow from
machine
L550-1756; 030-36
030.4.3.3 Cleaning machine
L550-1756; 030-36
030.4.3.4 Changing the VCl-capsules
030.4.4.3 Diesel engine: changing oil filter
L550-1756; 030-55
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Contents Service manual
030.4.4.4 Checking diesel engine belt drive
L550-1756; 030-56
030.4.4.5 Changing diesel engine belt drive
L550-1756; 030-57
030.4.4.6 Checking fastening of diesel engine control units and
sensor cable connections
L550-1756; 030-58
030.4.4.7 Checking diesel engine valve clearance
L550-1756; 030-59
030.4.4.8 Diesel engine: changing oil separator filter cartridge
L550-1756; 030-61
030.4.4.9 Diesel engine: Changing the heating flange
L550-1756; 030-62
030.4.4.10 Fuel tank: Draining off condensate and sediment
L550-1756; 030-62
030.4.4.11 Fuel pre-filter: Draining off condensate
L550-1756; 030-63
030.4.4.12 Changing fuel pre-filter cartridge
L550-1756; 030-64
030.4.4.13 Changing fuel fine filter element
L550-1756; 030-67
030.4.4.14 Diesel exhaust fluid tank: checking ventilation
L550-1756; 030-70
030.4.4.15 Air filter system: Cleaning the service cover and dust
discharge valve
L550-1756; 030-71
030.4.4.16 Cleaning or changing the main element of the air
filter system
L550-1756; 030-72
030.4.4.17 Air filter system: Changing the safety element
L550-1756; 030-75
030.4.4.18 Dust protection for alternator (option): cleaning or
replacing filter element
L550-1756; 030-76
030.4.4.19 Splitter box: Checking the oil level C:
L550-1756; 030-79 .!l
L550-1756; 030-84
030.4.4.23 Diesel engine: checking profile clamps
L550-1756; 030-85
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Service manual Contents
030.4.4.24 Diesel particulate filter: Cleaning filter module
L550-1756; 030-87
030.4.4.25 Changing the compressed air dryer
L550-1756; 030-90
030.4.4.26 Checking compressed air system
L550-1756; 030-91
030.4.5 Cooling system 030-92
030.4.5.1 Cooling system: Checking the coolant level
L550-1756; 030-92
030.4.5.2 Coolant: checking anti-freeze and corrosion protection
agent concentration
L550-1756; 030-93
030.4.5.3 Cleaning the cooling system
L550-1756; 030-100
030.4.5.4 Changing coolant in cooling system
L550-1756; 030-101
030.4.6 Hydraulic components 030-104
030.4.6.1 Hydraulic tank: Checking the oil level
L550-1756; 030-104
030.4.6.2 Draining off condensate and sediment from the
hydraulic tank
L550-1756; 030-106
030.4.6.3 Change the return filter insert in the hydraulic tank.
L550-1756; 030-107
030.4.6.4 Changing the hydraulic tank breather filter
L550-1756; 030-108
030.4.6.5 Hydraulic tank: analysing the oil
L550-1756; 030-109
030.4.6.6 Changing the oil in the hydraulic tank
L550-1756; 030-110
030.4.7 Steering system 030-114
030.4.7.1 Steering: Checking the function
L550-1756; 030-114
L550-1756; 030-124
030.4.8.5 Checking emergency parking brake actuation
L550-1756; 030-125
030.4.9 Electrical system 030-126
030.4.9.1 Checking function of the lighting and horn
L550-1756; 030-126
030.4.9.2 Batteries: Checking the acid level and terminals
L550-1756; 030-127
030.4.9.3 Control lever: Change the travel direction switch
rocker and cap.
L550-1756; 030-129
030.4.9.4 Personnel detection: cleaning sensor
L550-1756; 030-131
030.4.10 Gearbox 030-132
030.4.10.1 Transmission: checking the oil level
L550-1756; 030-132
030.4.10.2 Changing gear oil and gear oil filter
L550-1756; 030-135
030.4.10.3 Change the transmission hydrostat oil filter.
L550-1756; 030-138
030.4.11 Axles and drive shafts 030-139
030.4.11.1 Axles Changing the oil
L550-1756; 030-139
030.4.11.2 Checking drive shafts
L550-1756; 030-141
030.4.11.3 Checking the tyre pressure
L550-1756; 030-143
030.4.11.4 Checking the wheel tightness
L550-1756; 030-145
030.4.12 Steel parts of the basic machine 030-145
030.4.12.1 Lubricating the articulation bearing and the rear axle
oscillating bearing C: .!l
L550-1756; 030-145 “……,,.’…
penetrating oil
L550-1756; 030-148
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Service manual Contents
030.4.12.5 Service hatches: cleaning and maintaining seals
L550-1756; 030-148
030.4.13 Working attachment 030-149
030.4.13.1 Lubricating the lift arms and working attachment
L550-1756; 030-149
030.4.13.2 Lift arms: Checking the bucket bearing seals
L550-1756; 030-151
030.4.13.3 Lift arms: checking bucket bearing bushings
L550-1756; 030-152
030.4.13.4 Checking the lift arm bucket stops
L550-1756; 030-153
030.4.13.5 Bucket: Check the teeth or undercut blade for wear
and replace if necessary
L550-1756; 030-155
030.4.13.6 Lubricate and test the bearings on the quick coupler.
L550-1756; 030-158
030.4.13.7 High dump bucket: Lubricating the bearing
L550-1756; 030-159
030.4.14 Operator’s cab, heating and air conditioning 030-159
030.4.14.1 Operator’s cab: cleaning the fresh and recirculated
air filters
L550-1756; 030-159
030.4.14.2 Operator’s cab: changing fresh air filter and recirculated
air filters
L550-1756; 030-160
030.4.14.3 Safety belt: Checking the condition and function
L550-1756; 030-162
030.4.14.4 Testing the windscreen washer system
L550-1756; 030-163
030.4.14.5 Windscreen washer system: filling windscreen
washer fluid
L550-1756; 030-163
030.4.14.6 Cab: Lubricating the lock and cylinder with penetrating
Service manual
030.4.15.3 Central lubrication system: Checking the lubrication
of the bearings
L550-1756; 030-168
Testing and adjustment checklist
L550-1756; 030-169
Testing and adjustment tasks 030-176
Safety precautions
L550-1756; 030-176
Overall machine 030-176
030.6.2.1 Preparing for adjustment procedures
L550-1756; 030-176
030.6.2.2 Hydraulic oil: operating temperature
L550-1756; 030-178
030.6.2.3 Gear oil operating temperature
L550-1756; 030-179
030.6.2.4 Service management
L550-1756; 030-179
Drive group 030-180
030.6.3.1 Pedals: calibration
L550-1756; 030-180
030.6.3.2 Reading the diesel engine service files
L550-1756; 030-182
Cooling system 030-183
030.6.4.1 Fan speed proportional solenoid valve
L550-1756; 030-183
Working hydraulics 030-185
030.6.5.1 Multi-lever control (optional): Calibration
L550-1756; 030-185
030.6.5.2 Calibrating working hydraulics angle sensors
L550-1756; 030-187
030.6.5.3 Proportional solenoids in the control valve block: calibration
Working pump: flow regulator (standby pressure)
L550-1756;
Working pump flow regulator (differential pressure)
030-195
L550-1756; 030-196
Working pump: power regulator
L550-1756; 030-198
Z-bar kinematics control valve block: secondary pressure
relief valves
030.6.5.9 Z-bar kinematics control valve block: primary pressure
relief valve
L550-1756; 030-202
030.6.5.10 Z-bar kinematics control valve block: LS-pressure
cut-off
L550-1756; 030-204
030.6.5.11 Industrial lift arms control valve block (option): secondary
pressure relief valves
L550-1756; 030-205
030.6.5.12 Industrial lift arms control valve block (option):
primary pressure relief valve
L550-1756; 030-208
030.6.5.13 Industrial lift arms control valve block (option): LSpressure
cut-off
030.6.5.14 Stabilisation module cut-out function
030.6.5.15 Ride control hydro accumulator nitrogen filling
Hydraulic components 030-213
Hydro accumulator: checking and topping up
nitrogen filling
Checking the hydraulic lines for damage
030.6.7 Steering system 030-219
030.6.7.1 Joystick for joystick steering (option): calibration
L550-1756; 030-219
030.6.7.2 Angle sensor for articulation angle (option): calibration
(machine with steering wheel steering)
L550-1756; 030-219
030.6.7.3 Angle sensor for articulation angle (option): calibration
(machine without steering wheel steering)
L550-1756; 030-221
030.6.7.4 Control block for joystick steering (option): calibration
L550-1756; 030-222
030.6.7.5 Steering pump: LS pressure cut-off valve
L550-1756; 030-224
030.6.7.6 Steering pump flow regulator (standby pressure)
L550-1756; 030-225
030.6.7.7 Steering pump: flow regulator (differential pressure)
L550-1756; 030-227
030.6.7.8 Steering damper hydro accumulator nitrogen filling
L550-1756; 030-228
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Contents Service manual
030.6.7.9 Control block for joystick steering: determining installation
position of position sensors
L550-1756; 030-229
030.6.8 Brake system 030-230
030.6.8.1 Brake accumulator pressure sensor B19: deviation
L550-1756; 030-230
030.6.8.2 Compact brake valve hydro accumulator charging
function
L550-1756; 030-231
030.6.8.3 Service brake pressure
L550-1756; 030-232
030.6.8.4 Service brake hydro accumulator capacity
L550-1756; 030-233
030.6.9 Electrical system 030-235
030.6.9.1 Central control unit (Master5): creating service file
L550-1756; 030-235
030.6.9.2 Central control unit (Master5): software update
L550-1756; 030-236
030.6.9.3 Central control unit (Master5): resetting to factory
settings
L550-1756; 030-239
030.6.9.4 Central control unit (Master5): connecting Sculi diagnostic
software
L550-1756; 030-241
030.6.9.5 Central control unit (Master5): connecting LiFT function
L550-1756; 030-244
030.6.9.6 Addressing CAN module and checking system information
L550-1756; 030-245
030.6.10 Gearbox 030-249
030.6.10.1 Gearbox: basic calibration
L550-1756; 030-249
030.6.10.2 Gearbox: service calibration
L550-1756; 030-251 C: .!l
030.6.10.3 Transmission control unit: software update “……,,.’…
L550-1756; 030-254 ;;;,
!:j
0
030.6.11 Axles and drive shafts 030-255 0 “0 ‘
~
030.6.11.1 Tyres: setting radius ~
L550-1756; 030-255 52
“”” “”” 030.6.12 Working attachment 030-256 “”” ~ ID
030.6.12.1 Valve block for quick coupler (option): Pressure …J
reducing valve
L550-1756; 030-256
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20 llEBHERR L550-1756
Service manual Contents
L550-1756
030.6.12.2 Parameters for lift arm geometry
L550-1756; 030-257
030.6.12.3 Working attachment: automatic return of 3rd function
L550-1756; 030-258
030.6.13 Operator’s cab, heating and air conditioning 030-259
030.6.13.1 Checking the pressure and temperature conditions of
the air conditioning unit
L550-1756; 030-259
030.6.14 Options 030-260
040 Drive group
040.1 Engine
030.6.14.1 LiDAT: connecting to LiDAT module
L550-1756;
030.6.14.2 LiDAT: software update for LiDAT module
L550-1756;
030.6.14.3 LiDAT: creating report and snapshot
030.6.14.4 Liebherr weighing device with Truck Payload Assist:
calibration
L550-1756; 030-268
030.6.14.5 Skyview 360°: calibration
L550-1756;
030.6.14.6 Personnel detection: transmitting configuration files
030.6.14.7 Tyre pressure monitoring: changing and programming
pressure sensor
040. 1. 1 Diesel engine overview
L550-1756;
040.1.2 Electrical components of diesel engine
Ambient temperature sensor
L550-1756;
Fuel system
Fuel level sensor
L550-1756;
Separ fuel pre-filter
L550-1756;
Air filter system
040.1.6.1
040.1.6.2
Air filter
L550-1756;
Vacuum switch
Contents Service manual
040.1.7 Exhaust system 040-23
040.1.7.1 Exhaust gas treatment (stage V): overview
L550-1756; 040-24
040.1.7.2 Exhaust gas treatment (stage IV/ tier 4f): overview
L550-1756; 040-33
040.1.7.3 Metering unit
L550-1756; 040-38
040.1.7.4 Sampling module
L550-1756; 040-41
040.1.7.5 Exhaust treatment sensors
L550-1756; 040-42
040.1.8 Compressed air system 040-43
040.1.8.1 Overview of the compressed air system
L550-1756; 040-44
040.1.8.2 Compressor
L550-1756; 040-46
040.1.8.3 Air dryer
L550-1756; 040-47
040.1.8.4 SCR system air supply valve
L550-1756; 040-48
040.2 Clutch
L550-1756; 040-49
040.3 Splitter box
L550-1756; 040-51
050 Cooling system 050-1
050.1 Cooling system: General overview
L550-1756; 050-2
050.2 Cooling system hydraulics 050-3
050.2.1 Overview of cooling system hydraulics
L550-1756; 050-4
0 “0 ‘
050.3.1 Overview of electrical controls of cooling system ~
L550-1756; 050-13 ~ 52
“”” 050.3.2 Hydraulic oil temperature sensor “”” “””
L550-1756; 050-16 ~ ID
…J
050.4 Cooler 050-18
050.4.1 Cooler unit
L550-1756; 050-18
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Service manual Contents
050.5 Reversible fan drive 050-19
050.5.1 Overview of reversible fan drive
L550-1756; 050-19
050.5.2 Fan reversal valve block
L550-1756; 050-21
060 Working hydraulics 060-1
060.1 Overview of Z-bar kinematics working hydraulics
L550-1756; 060-3
060.2 Overview of working hydraulics for industrial lift arms
L550-1756; 060-12
060.3 Working pump
L550-1756; 060-16
060.4 Control block for Z-bar kinematics
L550-1756; 060-24
060.5 Control valve block for industrial lift arms
L550-1756; 060-32
060.6 Pilot control 060-39
060.6.1 Pilot control valve block
L550-1756; 060-39
060.7 Ride control 060-41
060.7.1 Overview of ride control system
L550-1756; 060-41
060.7.2 Stabilisation module
L550-1756; 060-44
060.7.3 Electric ride control unit
L550-1756; 060-47
060.8 Electronics of the working hydraulics 060-49
060.8.1 Overview of electrical controls the working hydraulics
L550-1756; 060-49
060.8.2 Working hydraulics angle sensors
L550-1756; 060-51
Service manual
Hydraulic components
080.1 Hydraulic system: overview
L550-1756;
080.2 Hydraulic tank
080.2.1 Overview of hydraulic tank
L550-1756;
080.2.2 Steel tank
L550-1756;
080.2.3 Return filter
080.2.4 Leak oil strainer
080.2.5 Breather filter
Steering system
Steering system overview
Steering pump
Servostat
Steering cylinder
090.4.1 Steering cylinder
090.4.2 Steering stabilisation valve block
090.4.3 Valve block for steering stabilisation (without steering wheel
steering)
090.5 Emergency steering
Emergency steering overview
Emergency steering pump
Emergency steering electronics
Overview of electrical controls of emergency steering
system
L550-1756;
Emergency steering pressure switch
L550-1756;
Emergency steering check pressure switch
Service manual Contents
L550-1756
090.6 Joystick steering 090-35
090.6.1 Joystick steering: overview (combined with steering wheel steering)
L550-1756; 090-35
090.6.2 Joystick steering: overview (without steering wheel steering)
L550-1756;
090.6.3 Joystick steering control block
L550-1756;
090.6.4 Joystick steering electrical system
090.6.4.1 Electronic control unit for joystick steering: overview
L550-1756; 090-48
090.6.4.2
090.7 2in1 steering
Joystick with position tracking
L550-1756;
090.7.1 2in1 steering: total overview
L550-1756;
090.7.2 Servostat for 2in1 steering
L550-1756;
100 Brake system
100.1 Overview of brake system
L550-1756;
100.2 Service brake and parking brake
100.2.1 Brake pump
L550-1756;
100.2.2 Compact brake valve
L550-1756;
100.3 Parking brake
100.3.1 Parking brake
L550-1756;
110 Electrical system
110. 1 Overview of electrical system
L550-1756;
110.2 Lighting
L550-1756;
110.3 Circuit diagrams
L550-1756;
110.4 Electronic control unit
110.4.1 General overview of electronic control system
L550-1756;
110.4.2 Central control unit (Master5-Premium)
L550-1756;
Contents Service manual
110.4.3 Modules 110-14
110.4.3.1 Overview of the input and output modules
L550-1756; 110-14
110.4.3.2 Input modules
L550-1756; 110-17
110.4.3.3 Output modules
L550-1756; 110-18
110.5 Electrical components of the driver’s cab 110-21
110.5.1 Fuse and relay boards
L550-1756; 110-21
110.5.2 Door contact switch (inductive sensor)
L550-1756; 110-26
110.6 Electrical components in the rear section 110-27
110.6.1 Battery installation
L550-1756; 110-27
110.6.2 Electric battery main switch
L550-1756; 110-29
120 Gearbox 120-1
120.1 Overview of transmission
L550-1756; 120-2
120.2 Transmission hydraulics 120-15
120.2.1 Overview of transmission hydraulics
L550-1756; 120-15
120.2.2 Gear pump
L550-1756; 120-19
120.2.3 Transmission control valve block
L550-1756; 120-20
120.2.4 Hydrostat module
L550-1756; 120-23
120.3 Transmission electronics 120-28
120.3.1 Overview of electrical control system of transmission
L550-1756; 120-28 C: .!l
120.3.3 Gear shifting proportional solenoid “0 ‘
120.3.4 Pressure sensor for hydrostat
Pressure sensor for hydrostat “”” L550-1756; 120-31 “”” “””
120.3.5 Engine speed sensor ~ ID
…J
L550-1756; 120-32
120.3.6 Temperature sensor
L550-1756; 120-33
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26 llEBHERR L550-1756
Service manual
L550-1756
130
120.3.7 Proportional solenoid for position control
L550-1756;
Axles and drive shafts
130.1
130.2
Axles
130.1.1 Front axle
L550-1756;
130.1.2 Rear axle
L550-1756;
Cardan shafts
130.2.1 Drive shaft between diesel engine and transmission
L550-1756;
130.2.2 Drive shaft between transmission and front axle
L550-1756;
130.2.3 Drive shaft between transmission and rear axle
L550-1756;
140 Steel parts of the basic machine
140.1 Vehicle frame
140.1.1 Articulation bearing
L550-1756;
140.1.2 Articulation lock
L550-1756;
140.2 Covering
140.2.1 Linear motor for opening the engine hood
L550-1756;
150 Working attachment
150.1 Lift arms for Z kinematics
150.1.1 Z kinematics
L550-1756;
150.2 Industrial lift arms
150.2.1 Industrial lift arms
L550-1756;
150.3 Quick coupler
150.3.1 Quick coupler
L550-1756;
150.3.2 Quick coupler hydraulics
150.3.2.1
150.3.2.2
Overview of quick coupler hydraulics
L550-1756;
Valve block for quick coupler
L550-1756;
Contents Service manual
150.3.3 Quick coupler electrics 150-11
150.3.3.1 Quick coupler electric control unit
L550-1756; 150-11
160 Operator’s cab, heating and air conditioning 160-1
160.1 Overview of operator’s cab, heating and air conditioning unit
L550-1756; 160-2
160.2 Display and control elements 160-4
160.2.1 Control lever
L550-1756; 160-4
160.2.2 Accelerator pedal
L550-1756; 160-6
160.3 Heating, ventilation, air conditioning 160-8
160.3.1 Heating, ventilation, air conditioning: General overview
L550-1756; 160-8
160.3.2 Heating and air conditioning unit 160-13
160.3.2.1 Heating and air conditioning unit
L550-1756; 160-14
160.3.2.2 Blower
L550-1756; 160-18
160.3.3 Air conditioning controller
L550-1756; 160-19
160.4 Air conditioning 160-22
160.4.1 Basic function of the air conditioning unit
L550-1756; 160-22
160.4.2 Air conditioning compressor
L550-1756; 160-23
160.4.3 Condenser
L550-1756; 160-25
160.4.4 Dryer
L550-1756; 160-26
160.4.5 Air conditioning pressure switch
L550-1756; 160-27 C: .!l
“‘ L550-1756; 170-2 “”””’ “””
170.1.2 Liebherr central lubrication pump ~ ID
L550-1756; 170-8 …J
170.1.3 Progressive distributor MX-F
L550-1756; 170-12
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28 llEBHERR L550-1756
Service manual Contents
170.1.4 Progressive distributor SXE-2
L550-1756; 170-14
190 Options 190-1
190.1 LiDAT 190-2
190.1.1 Overview of LiDAT
L550-1756; 190-2
190.1.2 LiDAT on machine
L550-1756; 190-4
190.1.3 LiDAT module (LiTU3)
L550-1756; 190-6
190.2 Liebherr weighing device with Truck Payload Assist
L550-1756; 190-10
190.3 Skyview 360° 190-12
190.3.1 Skyview 360°: complete overview
L550-1756; 190-12
190.3.2 Skyview 360° on machine
L550-1756; 190-16
190.4 Remote control for door lock
L550-1756; 190-17
190.5 Personnel detection
L550-1756; 190-20
190.6 Entfall des Lenkstockschalters 190-23
190.6.1 Elimination of steering-column switch: overview
L550-1756; 190-23
190.6.2 Additional controller (HY-TTC-30S)
L550-1756; 190-25
190.7 Silobetrieb 190-28
190.7.1 Silo operation: overview
L550-1756; 190-28
190.7.2 Tilt sensor for silo operation
L550-1756; 190-30
52 200.1.2 SCR system warning symbols 200-3
200.1.3 Service code indicator in display 200-4 ~ ID 200.2 Troubleshooting 200-6 …J
200.2.1 Replacing fuses 200-6
200.2.1.1 Fuses on fuse board A4 in the operator’s cab 200-6
copylight © Liebherr-Werk Bischofshofen GmbH 2020
L550-1756 llEBHERR 29
Fuses on fuse board A4a in the left ballast weight 200-9
Fuses on fuse board A4b in the operator’s cab 200-11