Liebherr L 556 1288 Wheel Loader Service Manual – PDF DOWNLOAD

— 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

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 010-17

010.2 Special tools for maintenance and repair work 010-18
010.2.1 Special tools in general 010-18
010.2.2 Special tools for Liebherr diesel engines 010-19
010.2.3 Special tools, hydraulic cylinder (Z kinematics) 010-20
010.2.4 Special tools, hydraulic cylinder (industrial machine) 010-20
010.2.56 Special tools for steering cylinders 010-21
010.2.6 Special tools for the electrical system 010-21
010.2.7 Special tools for the transmission 010-21
010.2.8 Special tools for front axle MT-L II 010-22
010.29 Special tools for rear axle MT-L II 010-22
010.2.10 Special tools for the air conditioning system 010-22
010.2.11 Special tools for Grammer driver’s seat 010-23
010.2.12 Special tools for cab glazing 010-23
010.2.13 Special tools for the central lubrication system (Liebherr) 010-23
010.2.14 Special tools for the central lubrication system (Groeneveld) 010-24
Standards and regulations 010-25
010.3.1 Prestressing forces and tightening torques for bolts with metric

standard and fine threads as per DIN ISO 261 010-25
010.3.1.1 Range of application and purpose 010-25
010.3.1.2 Other applicable documents 010-25
010.3.1.3 Modifications and descriptions 010-26
010.3.1.4 Tightening torques 010-26
010.3.2 Liebherr standards for assembly instructions and tightening torques010-32
Preservation guidelines 010-33
010.4.1 General information 010-33
010.4.2 Machine out of service for an unknown period of time 010-33
010.4.3 Putting the machine out of service 010-34
010.4.3.1 Out of service for up to 2 months 010-34
0104.3.2 Out of service for up to 12 months 010-35
0104.3.3 Out of service for longer than 12 months 010-36
010.4.4 Putting back into service 010-36

010.4.4.1 After being out of service for 2 months

010-36

0104.4.2 After being out of service for 12 months

010-37

0104.43 After being out of service for longer than 12 months 010-37

020 Technical data 020-1
020.1 Overall machine 020-6
0201.1 Complete machine with bucket (Z lift arms)
L556-1288/25344-; 020-6
0201.2 Complete machine with bucket (industrial lift arms)
L556-1288/25344-; 020-7
020.1.3 Attachment: Light material bucket
L556-1288/25344-; 020-9
020.14 Attachment: High dump bucket
L556-1288/25344-; 020-11
0201.5 Attachment: Forklift
L556-1288/25344-; 020-12
020.1.6 Attachment: Timber grabber
L556-1288/25344-; 020-14
020.2 Drive group 020-16
020.2.1 Diesel engine
L556-1288/25344-; 020-16
0202.2 Diesel particulate filter temperature sensors
L556-1288/25344-; 020-17
020.2.3 Fuel tank
L556-1288/25344-; 020-18
020.24 Fuel pre-filter (separator filter)
L556-1288/25344-; 020-18
020.2.5 Fuel fine filter
L556-1288/25344-; 020-18
0202.6 Air filter vacuum switch
L556-1288/25344-; 020-18
020.2.7 Clutch
L556-1288/25344-; 020-19
0202.8 Splitter box
L556-1288/25344-; 020-19
020.3 Cooling system 020-20
020.3.1 Fan gear pump
L556-1288/25344-; 020-20
020.3.2 Fan gear motor
L556-1288/25344-; 020-20
020.3.3 Hydraulic oil temperature sensor B8
L556-1288/25344-; 020-20
020.4 Working hydraulics 020-21
020.4.1 Working hydraulics pump
L556-1288/25344-; 020-21
0204.2 Control valve block
L556-1288/25344-; 020-21

020.4.3 Pilot control unit

L556-1288/25344-; 020-21
020.4.4 Pilot control hydro accumulator

L556-1288/25344-; 020-22
020.4.5 Stabilisation module

L556-1288/25344-; 020-22
020.4.6 Ride control hydro accumulator

1 556-1288/25344-; 020-22
020.4.7 Z kinematics and industrial lift arms lift cylinder

L556-1288/25344-; 020-22
020.4.8 Z kinematics tilt cylinder

L556-1288/25344-; 020-23
020.4.9 Industrial lift arms tilt cylinder

L556-1288/25344-; 020-23
Travel hydraulics 020-24
020.5.1 Travel pump

L556-1288/25344-; 020-24
020.5.2 Travel motor 1

L556-1288/25344-; 020-24
020.5.3 Travel motor 2

1 556-1288/25344-; 020-24
020.5.4 Variable displacement motor scavenging gear pump

1 556-1288/25344-; 020-25
Hydraulic components 020-26
020.6.1 Filter unit

L556-1288/25344-; 020-26
020.6.2 Breather filter

1 556-1288/25344-; 020-26
Steering system 020-27
020.7.1 Steering pump

L556-1288/25344-; 020-27
020.7.2 Servostat

1 556-1288/25344-; 020-27
020.7.3 Steering cylinder

L556-1288/25344-; 020-27
020.7.4 Steering cylinder pressure relief valve

1556-1288/34310-; 020-28
020.7.5 Steering damper hydro accumulator

L556-1288/25344-; 020-28
020.7.6 Emergency steering pump

1 556-1288/25344-; 020-28
020.7.7 Emergency steering pressure switch B3

1 556-1288/25344-; 020-28

020.7.8 Emergency steering check pressure switch B3a
L556-1288/25344-; 020-29
020.8 Brake system 020-30
0208.1 Brake system gear pump
L556-1288/25344-; 020-30
020.8.2 Compact brake valve
L556-1288/25344-; 020-30
0208.3 Service brake hydro accumulator
L556-1288/25344-; 020-30
020.8.4 Brake light pressure switch B12
L556-1288/25344-; 020-30
0208.5 Accumulator charge pressure switch B19
L556-1288/25344-; 020-31
020.8.6 Parking brake hydro accumulator
L556-1288/25344-; 020-31
0208.7 Overspeed protection solenoid valve Y16
L556-1288/25344-; 020-31
020.9 Electrical system 020-32
0209.1 Central control unit (Master 4)
L556-1288/25344-; 020-32
020.9.2 Input module
L556-1288/25344-; 020-32
020.9.3 Output module
L556-1288/25344-; 020-32
020.94 Battery
L556-1288/25344-; 020-33
0209.5 Voltage transformer
L556-1288/25344-; 020-33
020.9.6 Reversing camera
L556-1288/25344-; 020-33
020.10 Gearbox 020-35
020.10.1 Transmission
L556-1288/25344-; 020-35
3 020.10.2 Gear shifting solenoid valves
8 L556-1288/25344-; 020-36
a
8 020.10.3 Speed sensors
g L556-1288/25344-; 020-36
§ 020.10.4 Transmission gear pump
§ L556-1288/25344-; 020-36
: 020.11 Axles and drive shafts 020-37
3 020.11.1 Front axle
L556-1288/25344-; 020-37
020.112 Rear axle
L556-1288/25344-; 020-37

020.11.3 Front cardan shaft

L556-1288/25344-; 020-37
020.11.4 Rear drive shaft
L556-1288/25344-; 020-38
020.11.5 Tyres
L556-1288/25344-; 020-38
020.11.5.2 Tyres for timber handling 020-39
020.11.5.3 Special tyres 020-40
020.11.5.4 Tyres for machines with optional accessories 020-40
020.12 Steel parts of the basic machine 020-42
020.12.1 Ballast weight
L556-1288/25344-; 020-42
020.13 Working attachment 020-43
020.13.1 Lift arms with Z kinematics
L556-1288/25344-; 020-43
020.13.2 Industrial machine lift arms
1 556-1288/25344-; 020-44
020.14 Operator’s cab, heating and air conditioning 020-45
020.14.1 Heating, air conditioning
1 556-1288/25344-; 020-45
020.14.2.1 Air conditioning 020-45
020.14.3.1 Air conditioning compressor 020-45
020.14.4 Condenser
L556-1288/25344-; 020-45
020.14.5 Dryer
1 556-1288/25344-; 020-46
020.14.6 Air conditioning pressure switch
L556-1288/25344-; 020-46
020.14.7 Anti-icing temperature sensor
1 556-1288/25344-; 020-46
020.15 Lubrication system 020-48
020.15.1 Central lubrication system (Liebherr)
L556-1288/25344-; 020-48
020.15.1.1 Central lubrication pump 020-48
020.15.1.2 Progressive distributor 020-48
030 Maintenance 030-1
030.1 Maintenance and inspection schedule 030-10
030.2 Filling quantities and lubrication chart 030-15
030.2.1 Recommended lubricants
1 556-1288/25344-; 030-15
030.2.2 Recommended operating fluids
L556-1288/25344-40348; 030-16
0302.3 Recommended operating fluids
L556-1288/40349-; 030-16
030.3 Lubricants and fuels 030-17
030.3.1 General information on lubricants and fuels 030-17
030.3.1.1 General questions 030-17
030.3.1.2 Safety data sheets 030-17
030.3.1.3 Technical data sheets 030-17
030.3.1.4 Specific Liebherr standards 030-17
030.3.2 General information on changing lubricants and fuels 030-17
030.3.3 Converting hydraulic system from mineral oils to biodegradable
hydraulic fluids 030-18
030.3.4 Diesel fuels
L556-1288/25344-; 030-18
030.3.4.1 Specification 030-18
030.3.4.2 Sulphur content of the diesel fuel, lubricity 030-18
030.3.4.3 Diesel fuel at low temperatures (winter operation) 030-19
030.3.4.4 Flow improvers at low temperatures 030-19
030.3.5 Diesel fuels for diesel engines without emission-type approval
L556-1288; 030-19
030.3.5.1 Minimum quality requirement 030-19
030.3.6 Lubricating oils for diesel engines
L556-1288/25344-; 030-20
030.3.6.1 Lubricating oil quality 030-20
030.3.6.2 Lubricating oil viscosity 030-20
030.3.6.3 Complicating factors affect the oil change 030-21
030.3.7 Engine oils for diesel engines without emission-type approval
L 556-1288; 030-21
030.3.7.1 Liebherr recommendation 030-21
030.3.7.2 Other approved engine oils 030-21
030.3.7.3 Minimum quality requirement 030-22
030.3.7.4 Changing intervals 030-22
030.3.7.5 Complicating factors 030-22
030.3.8 Refrigerant
1556-1288; 030-22
030.3.9 Coolants for diesel engines
1 556-1288/25344-40348; 030-23
030.3.9.1 General recommendations 030-23
030.3.9.2 Water (fresh water) 030-23
030.3.9.3 Coolant mixing ratio 030-23
030.3.9.4 Permissible antifreeze and corrosion inhibitors 030-24
030.3.9.5 Corrosion inhibitors without antifreeze 030-24
030.3.10 Coolants for diesel engines
1 556-1288/40349-; 030-25
030.3.10.1 General recommendations 030-25
030.3.10.2 Water (fresh water) 030-25
030.3.10.3 Coolant – Mixing ration 030-26
030.3.10.4 Approved antifreeze and corrosion inhibitors 030-26
030.3.10.56 Permissible premixed antifreeze/corrosion inhibitors 030-26
030.3.10.6 Corrosion inhibitors without antifreeze 030-27
030.3.11 Hydraulic oil
1 556-1288/25344-; 030-27
030.3.11.1 Liebherr hydraulic oil 030-28
030.3.11.2 Using engine oil as hydraulic oil 030-28
030.3.11.3 Warming up 030-29
030.3.11.4 Biodegradable hydraulic oils 030-29
030.3.11.5 Changing the oil, analysing the oil, changing filters (030-30
030.3.12 Lubricating oils for splitter boxes
L556-1288/25344-; 030-31
030.3.13 Lubricating oils for transmissions
L556-1288/25344-; 030-32
030.3.14 Lubricating oils for axles
1 556-1288/25344-; 030-33
030.3.15 Lubrication grease and other lubricants
1 556-1288/25344-; 030-33
030.3.15.1 Minimum quality requirements 030-34
030.3.15.2 Liebherr lubrication grease 030-34
030.4 Maintenance tasks 030-36
030.4.1 Safety precautions
1 556-1288/25344-; 030-36
030.4.2 Preparatory tasks for maintenance 030-36
030.4.2.1 Maintenance positions
L556-1288/25344-; 030-37
030.4.2.2 Opening the service accesses
1L.556-1288/25344-; 030-38
030.4.2.3 Turning off the battery main switch
L556-1288/25344-; 030-40

030.4.3 Overall machine 030-41
030.4.3.1 Checking the machine for external damage
L556-1288/25344-; 030-41
030.4.3.2 Removing loose parts, dirt, ice and snow from the
machine
L556-1288/25344-; 030-41
030.4.3.3 Cleaning the machine
L556-1288/25344-; 030-41
030.4.3.4 Checking the machine for leaks
L556-1288/25344-; 030-43
030.4.3.5 Making sure the bolted connections are tight
L556-1288/25344-; 030-43
030.4.3.6 Corrosion protection system for use with salt and arti-
ficial fertilisers (optional): Carrying out corrosion
protection
L556-1288/25344-; 030-43
030.4.3.7 Qil analyses
L556-1288/25344-; 030-44
0304.4 Drive group 030-50
030.4.4.1 Checking the engine oil level
L556-1288/25344-; 030-50
030.4.4.2 Changing diesel engine oil
1 556-1288/25344-; 030-51
030.4.4.3 Changing the engine oil filter
L556-1288/25344-; 030-52
030.4.4.4 Checking the V-ribbed belt on the engine
L556-1288/25344-; 030-53
030.4.4.5 Changing the V-ribbed belt on the engine
L556-1288/25344-; 030-53
030.44.6 Checking the mounting and sensor cable connec-
tions of the engine control units
L556-1288/25344-; 030-55
030.4.4.7 Checking the engine valve clearance
L556-1288/25344-; 030-55
030.44.8 Diesel engine oil separator – changing filter cartridge
L556-1288/25344-; 030-57
030.4.4.9 Checking the engine heating flange
L556-1288/25344-; 030-58
030.4.4.10 Changing the engine heating flange
L556-1288/25344-; 030-59
030.4.4.11 Draining off condensate and sediment from the fuel
tank
1 556-1288/25344-; 030-59
030.4.4.12 Draining off condensate from the Separ fuel pre-filter
L556-1288/25344-; 030-60

030.4.4.13 Changing the Separ fuel pre-filter insert

L556-1288/25344-; 030-61
030.4.4.14 Changing the fuel fine filter

1L.556-1288/25344-; 030-63
030.4.4.15 Bleeding the fuel system

L556-1288/25344-; 030-64
030.4.4.16 Cleaning the air filter service cover and dust

discharge valve

1L.556-1288/25344-; 030-65
030.4.4.17 Checking the air suction system for leaks and tight

fitting

1L556-1288/25344-; 030-66
030.4.4.18 Cleaning or changing the main filter element

L556-1288/25344-; 030-67
030.4.4.19 Changing the air filter safety element

L556-1288/25344-; 030-70
030.4.4.20 Checking the oil level in the splitter box

1.556-1288/25344-; 030-71
030.4421 Changing the splitter box oil

1L556-1288/25344-; 030-71
030.4.4.22 Checking the exhaust system for leaks and tight

fitting

L556-1288/25344-; 030-72
030.4.4.23 Cleaning or changing the diesel particulate filter

1L.556-1288/25344-; 030-73
Cooling system 030-80
030.4.5.1 Checking the coolant antifreeze and corrosion inhib-

itor concentration

L556-1288/25344-; 030-80
030.4.5.2 Cleaning the cooling system

1L.556-1288/25344-; 030-84
0304.5.3 Changing the coolant

L556-1288/25344-40348; 030-85
0304.5.4 Changing the coolant

L556-1288/40349-; 030-87
Working hydraulics 030-90
030.4.6.1 Lubricating the solenoids, universal joints and

tappets on the pilot control unit

L556-1288/25344-; 030-90
Hydraulic components 030-90
030.4.7.1 Checking the oil level in the hydraulic tank

1L556-1288/25344-; 030-90
0304.7.2 Checking and cleaning the magnetic rod on the

hydraulic tank

1L556-1288/25344-; 030-92

030.4.7.3 Draining off condensate and sediment from the
hydraulic tank

1 556-1288/25344-; 030-93
030.4.7.4 Changing the hydraulic tank return suction filter
L556-1288/25344-; 030-94
030.4.7.5 Changing the hydraulic tank breather filter
L556-1288/25344-; 030-95
030.4.7.6 Hydraulic tank – changing the oil in the hydraulic
system
L556-1288/25344-; 030-96
0304.8 Steering system 030-97
030.4.8.1 Testing the steering
L556-1288/25344-; 030-97
030.4.8.2 Lubricating the bearing points on the steering cylin-
ders
L556-1288/25344-; 030-98
0304.9 Brake system 030-98
030.4.9.1 Testing the service brake and parking brake
L556-1288/25344-; 030-98
030.4.9.2 Checking the service brake discs for wear
L556-1288/25344-; 030-99
030.4.9.3 Checking the gap and wear on the parking brake
linings
L556-1288/25344-; 030-102
0304.10 Electrical system 030-107
030.4.10.1 Checking the lights
L556-1288/25344-; 030-107
030.4.10.2 Checking the batteries, fluid level and terminals
1 556-1288/25344-; 030-108
030.4.10.3 Changing the travel direction rocker switch and cap
(optional) on the control lever
L556-1288/25344-; 030-110
030.4.11 Gearbox 030-112
030.4.11.1 Checking the transmission oil level
1 556-1288/25344-; 030-112
030.4.11.2 Changing the transmission oil
L556-1288/25344-; 030-113
030.4.11.3 Changing the transmission oil filter
L556-1288/25344-; 030-114
030.4.12 Axles and drive shafts 030-115
030.4.12.1 Checking the axle oil levels
L556-1288/25344-; 030-115
030.4.12.2 Changing the axle oil
L556-1288/25344-; 030-115
030.4.12.3 Checking the cardan shafts
L556-1288/25344-; 030-117
0304.124 Checking the tyre pressure
1L.556-1288/25344-; 030-117
030.4.12.5 Checking the wheel tightness
L556-1288/25344-35541; 030-117
030.4.12.6 Checking the wheel tightness
L556-1288/35542-; 030-118
030.4.13 Steel parts of the basic machine 030-119
030.4.13.1 Lubricating the articulation bearing and the rear axle
oscillating bearing
L556-1288/25344-; 030-119
030.4.13.2 Covering – lubricating locks and hinges
L556-1288/25344-; 030-120
030.4.13.3 Greasing the rear section cover lower hinges
L556-1288/25344-; 030-120
030.4.14 Working attachment 030-121
030.4.14.1 Lubricating the lift arms and attachment
L556-1288/25344-; 030-121
030.4.14.2 Checking the bucket bearing seals and the bearing
bushings on the lift arms
L556-1288/25344-; 030-122
030.4.14.3 Checking the lift arm bucket stops
1L.556-1288/25344-; 030-124
030.4.14.4 Lubricating and testing the quick-change device
L556-1288/25344-; 030-125
030.4.15 Operator’s cab, heating and air conditioning 030-126
030.4.15.1 Lubricating the elongated hole on the accelerator
pedal and checking the bearing
1L.556-1288/25344-; 030-126
0304.15.2 Cleaning the fresh and recirculated air filters
L556-1288/25344-; 030-127
030.4.15.3 Changing the fresh and recirculated air filters
1L556-1288/25344-; 030-129
030.4.154 Checking the condition and function of the safety belt
L556-1288/25344-; 030-130
030.4.15.5 Checking and topping up the windscreen washer
reservoir
L556-1288/25344-; 030-130
030.4.1568 Lubricating the cab door hinges
L556-1288/25344-; 030-131
030.4.15.7 Checking the seals on the driver’s cab
1L.556-1288/25344-; 030-131
030.4.15.8 Heating and air conditioning unit: Testing the function
1L556-1288/25344-; 030-131
030.4.16 Lubrication system 030-133
030.4.16.1 Checking the lubrication system grease reservoir
level
L556-1288/25344-; 030-133

030.4.16.2 Checking the pipes, hoses and lubrication points of
the lubrication system
L556-1288/25344-; 030-134

030.4.16.3 Checking whether metered quantities are adequate
at the bearing points (grease collars) of the lubrica-

tion system
L556-1288/25344-; 030-134
030.5 Testing and adjustment checklist
L556-1288/25344-; 030-135
030.6 Testing and adjustment tasks 030-140
0306.1 Safety precautions
L556-1288/25344-; 030-140
030.6.2 Overall machine 030-141
030.6.2.1 Preparatory tasks for testing and adjustment
L556-1288/25344-; 030-141
030.6.2.2 Bringing the machine up to operating temperature
1 556-1288/25344-; 030-142
030.6.3 Drive group 030-143
030.6.3.1 Calibrating the pedals
L556-1288/25344-; 030-143
030.6.3.2 Checking the engine speed
L556-1288/25344-; 030-143
030.6.3.3 Engine: Reading the service files
1 556-1288/25344-; 030-144
030.6.3.4 Diesel particulate filter: Performing service regenera-
tion.
L556-1288/25344-; 030-145
0306.4 Cooling system 030-147
030.6.4.1 Fan gear motor proportional pressure relief valve
1 556-1288/25344-; 030-147
0306.5 Working hydraulics 030-149
030.6.5.1 Working hydraulics pump flow regulator (standby
pressure)
L556-1288/25344-; 030-149
030.6.5.2 Working hydraulics pump, flow regulator (differential
pressure)
L556-1288/25344-; 030-151

030.6.5.3 Working hydraulics pump, power regulator
1 556-1288/25344-; 030-152

L566-1288

030.6.5.4 Z kinematics control valve block secondary pressure

relief valves

1 556-1288/25344-; 030-153
030.6.5.5 Z kinematics control valve block primary pressure

relief valve

L556-1288/25344-; 030-155
030.6.5.6 Z kinematics control valve block LS pressure cut-off

valve

1 556-1288/25344-; 030-156
0306.5.7 Industrial lift arm control valve block secondary pres-

sure relief valves

1 556-1288/25344-; 030-157
030.6.5.8 Industrial lift arm control block, primary pressure

relief valve

L556-1288/25344-; 030-159
030.6.5.9 Industrial lift arms control valve block LS pressure

cut-off valve

1 556-1288/25344-; 030-160
030.6.5.10 Stabilisation module cut-off function

L556-1288/25344-; 030-161
030.6.5.11 Nitrogen filling of ride control hydro accumulator

L556-1288/25344-; 030-162
0306.5.12 Testing the Z kinematics control valve block for

leakage

1 556-1288/25344-; 030-164
Hydraulic components 030-167
030.6.6.1 Checking the hydraulic lines for damage

L556-1288; 030-167
Travel hydraulics 030-172
0306.71 Travel pump, high pressure sensor

1 556-1288/25344-; 030-172
030.6.7.2 Travel pump replenishing pressure relief valve

1 556-1288/25344-; 030-173
030.6.7.3 Pressure relief and replenishing valves of the travel

pump

1 556-1288/25344-; 030-175
030.6.7.4 Travel pump pressure cut-off

1556-1288/25344-; 030-177
030.6.7.5 Travel pump block curve calibration

L556-1288/25344-; 030-179
030.6.7.6 Travel motors, automatic calibration

L556-1288/25344-; 030-181
030.6.7.7 Engine output

1 556-1288/25344-; 030-182
Steering system 030-183

Brake system

Steering pump LS pressure cut-off valve

L556-1288/25344-; 030-183
Steering pump flow regulator (standby pressure)

1 556-1288/25344-; 030-184
Steering pump flow regulator (differential pressure)
L556-1288/25344-; 030-185

030-186

030.6.9.1 Compact brake valve, hydro accumulator charging

function

L556-1288/25344-; 030-186
030.6.9.2 Service brake pressure

L556-1288/25344-; 030-187
030.6.9.3 Service brake hydro accumulator capacity

1 556-1288/25344-; 030-188
030.6.9.4 Accumulator charge pressure switch shift pressure

L556-1288/25344-; 030-190
Electrical system 030-191
030.6.10.1 Central control unit (Master4) Creating a Servicefile

L556-1288/25344-; 030-191
030.6.10.2 Central control unit (Master4); software update

L 556-1288; 030-194
030.6.10.3 Setting the IP addresses of the central control unit

(Master4)

L556-1288/25344-; 030-196
030.6.10.4 Resetting the central control unit (Master4)

L556-1288/25344-; 030-199
030.6.10.5 Testing the CAN line

L556-1288/25344-; 030-200
030.6.10.6 Addressing the CAN module and checking the

system information

1 556-1288/25344-; 030-204
Gearbox 030-208
030.6.11.1 Control valve block shift pressure

1 556-1288/25345-; 030-208
030.6.11.2 Nitrogen filling of transmission hydro accumulator

1 556-1288/25344-; 030-208
Operator’s cab, heating and air conditioning 030-210
030.6.12.1 Checking the pressure and temperature conditions of

the air conditioning unit

L556-1288/255344-; 030-210
030.6.12.2 Calibrating the display (Display4)

1 556-1288/25344-; 030-211
030.6.12.3 Formatting the display and reinstalling the software

(Display4)

L556-1288/25344-; 030-212

L566-1288

030.6.13 Options 030-214
030.6.13.1 Checking the LiDAT connection status
1.556-1288/25344-; 030-214
030.6.13.2 LiDAT: activating data transmission manually
L556-1288; 030-216
040 Drive group 040-1
040.1 Engine 040-3
040.1.1 Diesel engine overview
L556-1288/25344-; 040-3
040.1.2 Electrical components on the engine
1 556-1288/25344-; 040-7
040.1.3 Speed sensor for crankshaft
L556-1288/25344-; 040-8
040.1.4 Camshaft speed sensor
L556-1288/25344-; 040-9
040.1.5 Fuel system 040-10
040.1.5.1 Overview of the fuel system
L556-1288/25344-; 040-11
040.1.5.2 Fuel level sensor
1L556-1288/25344-; 040-12
040.1.6 Air filter system 040-12
040.1.6.1 Air filter
L556-1288/25344-; 040-13
040.1.6.2 Vacuum switch
1 556-1288/25344-; 040-14
040.1.7 Exhaust system 040-14
040.1.7.1 Overview of the diesel particulate filter
1L.556-1288/25344-; 040-15
040.1.7.2 Diesel oxidation catalyst (DOC)
L556-1288/25344-; 040-20
040.1.7.3 Diesel particulate filter module
1L.556-1288/25344-; 040-21
040.1.7.4 Removing the diesel particulate filter
L556-1288; 040-21
040.1.7.5 Installing the diesel particulate filter
1556-1288; 040-23
040.2 Clutch
L556-1288/25344-; 040-27
040.3 Splitter box
L556-1288/25344-; 040-29

050 Cooling system 050-1
050.1 Overview of the cooling system
L556-1288/25344-; 050-2
050.2 Cooling system hydraulics 050-3
0502.1 Overview of the hydraulics cooling system
L556-1288/25344-; 050-3
050.2.2 Fan gear pump
L556-1288/25344-; 050-5
050.2.3 Fan gear motor
L556-1288/25344-; 050-7
050.3 Cooling system electronics 050-11
050.3.1 Electric fan speed control
L556-1288/25344-; 050-11
050.3.2 Hydraulic oil temperature sensor
L556-1288/25344-; 050-13
060 Working hydraulics 060-1
060.1 Overview of the working hydraulics
L556-1288/25344-; 060-2
060.2 Pilot control 060-9
060.2.1 Pilot control unit
L556-1288/25344-; 060-9
060.2.2 Pilot control solenoid valve
L556-1288/25344-; 060-14
060.2.3 Pilot control hydro accumulator
L556-1288/25344-; 060-15
060.3 Ride control 060-16
060.3.1 Stabilisation module
L556-1288/25344-; 060-16
060.3.2 Ride control hydro accumulator
L556-1288/25344-; 060-20
060.4 Hydraulic cylinders of the working hydraulics 060-21
060.4.1 Hydraulic cylinders for Z kinematics 060-21
060.4.1.1 Z kinematics lift cylinder
L556-1288/25344-; 060-21
060.4.1.2 Z kinematics tilt cylinder
L556-1288/25344-; 060-22
060.4.2 Hydraulic cylinders for industrial lift arms 060-23
060.4.2.1 Lift cylinder for industrial lift arms
L556-1288/25344-; 060-23
060.4.2.2 Industrial lift arms tilt cylinder
L556-1288/25344-; 060-24

070 Travel hydraulics 070-1
070.1 Travel hydraulics overview
1 556-1288/25344-38936; 070-2
070.2 Travel hydraulics overview
L556-1288/38937-; 070-10
070.3 Variable displacement pump
L556-1288/25344-; 070-14
Hydraulic components 080-1
080.1 Hydraulic tank 080-2
080.1.1 Overview of the hydraulic tank
L556-1288/25344-; 080-2
080.1.2 Filter unit
1 556-1288/25344-; 080-5
080.1.3 Breather filter
1 556-1288/25344-; 080-10
Steering system 090-1
090.1 Steering system overview
L556-1288/25344-34309; 090-2
090.2 Steering system overview
L556-1288/34310-35231; 090-8
090.3 Steering system overview
L556-1288/35232-; 090-14
090.4 Steering pump
L556-1288/25344-; 090-17
090.5 Servostat
L556-1288/25344-; 090-24
090.6 Steering cylinder 090-29
090.6.1 Steering cylinder overview
L556-1288/25344-; 090-29
090.6.2 Steering cylinder pressure relief valve
L556-1288/34310-; 090-31
090.6.3 Steering damper hydro accumulator
1 556-1288/25344-; 090-32
090.7 Emergency steering 090-34
090.7.1 Emergency steering overview
1 556-1288/25344-; 090-34
090.7.2 Emergency steering pump
L556-1288/25344-; 090-38
090.7.3 Emergency steering electronics 090-40
090.7.3.1 Emergency steering pressure switch

090.7.3.2 Emergency steering check pressure switch

L556-1288/25344-; 090-41
090.7.4 Valve block
L556-1288/25344-; 090-43
100 Brake system 100-1
100.1 Overview of the brake system
L556-1288/25344-; 100-2
100.2 Service brake and parking brake 100-9
100.2.1 Compact brake valve
L556-1288/25344-; 100-9
100.3 Service brake 100-13
100.3.1 Service brake hydro accumulator
L556-1288/25344-; 100-13
100.3.2 Brake light pressure switch
L556-1288/25344-; 100-14
100.3.3 Accumulator charge pressure switch
L556-1288/25344-; 100-15
100.4 Parking brake 100-16
100.4.1 Parking brake
L556-1288/25344-; 100-16
100.4.2 Disc brake
L556-1288/25344-; 100-18
100.4.3 Parking brake hydro accumulator
L556-1288/25344-; 100-21
100.6 Overspeed protection 100-22
100.5.1 Overview of the overspeed protection system
L556-1288/25344-; 100-22
100.56.2 Overspeed protection solenoid valve
L556-1288/25344-; 100-25
110 Electrical system 110-1
110.1 Overview of the electrical system
1 556-1288/25344-; 110-2
110.2 Lighting
1 556-1288/25344-; 110-7
110.3 Circuit diagrams
L556-1288/25344-; 110-9
110.4 Electronic control unit 110-11
110.4.1 Central control unit (Master4)
L556-1288/25344-; 110-11
110.4.2 Modules 110-15
copyright ® Liebherr-Werk Bischofshofen GmbH 2019
L556-1288 LIEBHERR 23
Contents Service manual

110.4.2.1 Input modules

L556-1288/25344-; 110-15
110.4.2.2 Output modules
1 556-1288/25344-; 110-18
110.5 Electrical components of the driver’s cab 110-23
110.5.1 Overview of electrical components in the cab
L556-1288/25344-; 110-23
110.5.2 Fuse and relay board
1 556-1288/25344-; 110-24
110.6 Electrical components in the rear section 110-30
110.6.1 Battery installation
L556-1288/25344-; 110-30
110.7 Rear area monitoring with camera 110-32
110.7.1 Overview of rear area monitoring with camera
L556-1288/25344-; 110-32
110.7.2 Camera
1 556-1288/25344~; 110-33
120 Gearbox 120-1
120.1 Overview of the transmission
L556-1288/25344-; 120-2
120.2 Mechanical transmission
L556-1288/25344-; 1204
120.3 Transmission hydraulics 120-10
120.3.1 Overview of the hydraulic control system
1 556-1288/25344-; 120-10
120.3.2 Transmission gear pump
1 556-1288/25344-; 120-14
120.3.3 Control valve block
L556-1288/25344-; 120-15
120.3.4 Transmission hydro accumulator
L556-1288/25344-; 120-16
120.4 Transmission electronics 120-17
120.4.1 Overview of the electronic control system
L556-1288/25344-; 120-17
120.4.2 Gear shifting solenoid valves
L556-1288/25344-; 120-19
120.4.3 Speed sensors
L556-1288/25344-; 120-20
120.44 Gear oil temperature switch
1 556-1288/25344-; 120-21

copyright ® Liebher-Werk Bischofshofen GmbH 2019

24 LIEBHERR L556-1288

LBH/11450110/13/211-20190329_103446/en
Service manual Contents

130 Axles and drive shafts 130-1
130.1 Axles 130-2
130.1.1 Front axle
L556-1288/25344-; 130-2
130.1.2 Rear axle
L556-1288/25344-; 130-7
130.2 Cardan shafts 130-8
130.2.1 Front cardan shaft
L556-1288/25344-; 130-8
130.2.2 Rear cardan shaft
L556-1288/25344-; 130-9
140 Steel parts of the basic machine 140-1
140.1 Vehicle frame 140-2
140.1.1 Articulation bearing
L556-1288/25344-; 140-2
140.1.2 Oscillating bearing
L556-1288/25344-; 140-4
140.1.3 Articulation lock
L556-1288/25344-; 140-4
140.2 Ballast weight
L556-1288/25344-; 140-6
140.3 Cab access
L556-1288/25344-; 140-7
150 Working attachment 150-1
150.1 Lift arms for Z kinematics 150-2
150.1.1 Overview of z-bar lift arm kinematics
L556-1288/25344-; 150-2
160.1.2 Pin bearing 150-3
150.1.2.1 Standard bearing
c L556-1288/25344-; 150-3
3 150.1.2.2 Bucket bearing
o L556-1288/25344-; 150-5
8
g 150.1.2.3 Removing the bucket bearing
3 L556-1288/25344-; 150-6
g 160.1.2.4 Installing the bucket bearing
s L556-1288/25344-; 150-9
£ 150.2 Quick coupler 150-12

160.2.1 Quick-change device (optional)
L556-1288/25344-; 150-12
L556-1288/25344-; 150-15
160 Operator’s cab, heating and air conditioning 160-1
160.1 Overview of the cab, heating and air conditioning unit
L556-1288/25344-; 160-3
160.2 Display and control elements 160-6
160.2.1 Electrical components in the control panel 160-6
160.2.1.1 Overview of electrical components in the control
panel
L556-1288/25344-; 160-6
160.2.1.2 Control unit for main functions
L556-1288/25344-; 160-6
160.2.1.3 Electric control unit
1 556-1288/25344-; 160-8
160.2.1.4 Starter switch
L556-1288/25344-; 160-12
160.2.2 Touch screen display
1 556-1288/25344-; 160-13
160.2.3 Control lever
1 556-1288/25344-; 160-15
160.3 Heating, ventilation, air conditioning 160-18
160.3.1 Heating and air conditioning unit 160-18
160.3.1.1 Heating and air conditioning unit
1 556-1288/25344-; 160-18
160.3.1.2 Blower
L556-1288/25344-; 160-20
160.3.2 Heating/air conditioning electronics
1 556-1288/25344-; 160-21
160.4 Air conditioning 160-23
160.4.1 Air conditioning compressor
L556-1288/25344-; 160-23
160.4.2 Condenser
L556-1288/25344-; 160-24
160.4.3 Dryer
L556-1288/25344-; 160-26
160.4.4 Air conditioning pressure switch
1 556-1288/25344-; 160-27
160.4.5 Evaporator
L556-1288/25344-; 160-28

160.4.6 Anti-icing temperature sensor

L556-1288/25344-; 160-29
160.4.7 Automatic air conditioning 160-29
160.4.7.1 Overview of the automatic air conditioning
L556-1288/25344-; 160-29
160.4.7.2 Interior temperature sensor and air flow temperature
sensor
L556-1288/25344-; 160-31
160.4.7.3 Outside temperature sensor
L556-1288/25344-; 160-31
160.4.7.4 Sun sensor
L556-1288/25344-; 160-32
170 Lubrication system 170-1
170.1 Liebherr automatic central lubrication system 170-2
170.1.1 Overview of Liebherr automatic central lubrication system
L556-1288/25344-; 170-2
170.1.2 Liebherr central lubrication pump
L556-1288/25344-; 170-6
170.1.3 Progressive distributor MX-F
L556-1288/25344-; 170-10
190 Options 190-1
190.1 Diesel engine without emission type approval
L556-1288; 190-2
190.2 LiDAT 190-3
190.2.1 Overview of LIiDAT
L556-1288/25344-; 190-3
190.2.2 LiDAT on the machine
L556-1288/25344-; 190-5
190.3 Refuelling system
L556-1288/25344-; 190-9
190.4 Weighing device (Liebherr)
1 556-1288/25344-; 190-12
200 Diagnosis 200-1
200.1 Malfunctions 200-2
200.1.1 Service codes in the display unit 200-2
200.1.1.2 Display of service codes 200-2
200.1.1.3 Effects of a fault 200-2
200.1.1.4 Correcting an error 200-3
200.2 Troubleshooting 200-4
200.2.1 Replacing fuses 200-4
200.2.1.1 Fuses in the battery compartment 200-4
200.2.1.2 Plug-in fuses on the relay and fuse board 200-5