Liebherr L510-782 Wheel Loader Service Repair Manual SN：9099

Service manual
(20
Wheel loader
(10 points)
L506 - L510 Stereo
(10
en

Address
Address: LIEBHERR-WERK BISCHOFSHOFEN GMBH
Dr. Hans Liebherr – Straße 4
A – 5500 BISCHOFSHOFEN, AUSTRIA
Product identification
Manufacturer: LIEBHERR-WERK BISCHOFSHOFEN GMBH
Product group: Wheel loader
Type: L506 L507 L508 L509 L510
Construction number: 776 777 778 779 782
Serial number: 9099 9099 9099 9099 9099
Document identification
Order number: 1011 2640
Author: LBH / T-DOK department
Document version: 02
Manual number:
Owner:
Service manual
(20
Wheel loader
(10 points)
L506 - L510 Stereo
(10
en

Foreword
Target group This Service Manual has been written for those whose job it is to make sure
that the machines remain operational on a daily basis. This specifically
includes the mechanics and workshop specialists at Liebherr dealers and
Liebherr branch offices.
Contents In the first chapter you will find information about safety regulations as well
as specifications of the special tools needed for maintenance and repair.
Chapter 2 provides an overview of all important technical data for the entire
machine and the individual assemblies.
The following chapter, entitled Maintenance, contains the maintenance and
inspection schedule, inspection and setting logs, lubrication schedules and
filling quantity tables, a description of maintenance procedures and speci-
fications for prescribed lubricants and fuels.
The technical description of the machine in the following chapters is divided
into 15 functional groups. The design, function, and technical data for each
group, component and part are explained.
How to use this manual This manual describes a variety of types and finished forms. In general, this
information applies to the types and serial number groups specified in the
footnotes. One exception is that specific type and serial number data are
indicated at the beginning of each section (e.g. the technical specifications of
the components).
Whenever possible, parts and components are supplemented by indication
of the identification number in the heading.
This manual is available in German, English and French.
Working instructions It is imperative that safety regulations be observed with all tasks done on the
machine. You will find information on this in the General Information
chapter.
A complete set of tools in perfect condition is required for work on the
machine, along with any special tools that might be needed. Absolute
cleanliness must be observed with all tasks!
Sealing material such as O-rings and surface seals should be replaced
whenever repairs are carried out.
DVD edition We would particularly like to draw your attention to the fact that this book is
available not only in printed form, but also as an electronic document on
DVD (Lidos).

General information 1
Product description 2
Maintenance 3
Diesel engine 4
Cooling system 5
Travel hydraulics 6
Working hydraulics 7
Steering system 8
Brake system 9
Electrical system 10
Transfer gear 11
Axles, drive shafts 12
Machine frame, ballast weight 13
Central lubrication system 14
Covering, cab access 15
Cab, heating, air-conditioning 16
Lift arm, quick-change device 17
Attachments, accessories 18
Repair work, troubleshooting 19

   
  


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 
 

   
  
 
  
 
  
 
  
 
 
  
  
  
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 
 
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   
  


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 
           
         



         


         


 
 









 


 
 
 
 
 
 

 
 
   
  
  


 
             



 
 
 
 
 
 
 
 
 
 
 
 
 
 
         

 
 
 
 
 


 
 

   
  



 

 
   
  


  



   
   


  
   
   
   
   
   
   
   
   
   
  


   
   
   
  


 
   
  


  


   
  






  
  


   
  




 
 
   
  
  


   
  







 





 






 




 


  




 



  


  




 




  
  


  


   


 


   


 




 


  



   
   
  


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 
 

   
  



 
   
   
   
 



 



 



 





  












  
 
   
  


   
   
   




  
   
   
   
   


  


  


  
  


  







 




 
 
   
  
  


 
   
  


  


  


  





 


  


  


  


   


 


  


  


 
   
   
   


 




 




 




 
 

   
  



 
   
  


  


   
   
   
   
   
 
   


  


L506 - 776 / from 9099 L509 - 779 / from 9099 2.0-1 o f 2
L507 - 777 / from 9099 L510 - 782 / from 9099
L508 - 778 / from 9099
copyright by
MJFCIFSS
2 Product Description
2.0
Chapter contents
2 Product Description............................................................. 2.0-1
2.1 Technical data ................................................................................2.1-1
2.1.1 Complete machine................................................................2.1-1
2.1.2 Diesel engine........................................................................2.1-8
2.1.3 Cooling system...................................................................2.1-12
2.1.4 Travel hydraulics ................................................................2.1-13
2.1.5 Working hydraulics .............................................................2.1-15
2.1.6 Steering system..................................................................2.1-18
2.1.7 Brake system......................................................................2.1-18
2.1.8 Electrical system.................................................................2.1-19
2.1.9 Transfer gear......................................................................2.1-19
2.1.10 Axles and cardan shaft.......................................................2.1-20
2.1.11 Machine frame and ballast weight......................................2.1-22
2.1.12 Automatic central lubrication system..................................2.1-23
2.1.13 Cab, heating and air-conditioning.......................................2.1-24
2.1.14 Lift arms and quick-change device.....................................2.1-25
2.1.15 Equipment and accessories ...............................................2.1-26

Service Manual Product Description
Technical Data
L506 - 776 / from 9099 L509 - 779 / from 9099 2.1-1 o f 2 8
L507 - 777 / from 9099 L510 - 782 / from 9099
L508 - 778 / from 9099
copyright by
MJFCIFSS
2.1 Technical data
2.1.1 Complete machine
Valid for: L506 - 776 / from 9099
The values stated refer to the standard version of the machine:
– with 365 / 70 R18 tyres
– tipping loads and weights include all lubricants, full fuel tank, ROPS/
FOPS cab and driver.
Description Value Unit
Bucket capacity as per ISO 7546 0.8 m³
Bucket width 1900 mm
Specific material weight 1.8 t/m³
A Dump height at maximum lifting height
and 45° tilt-out angle
2550 mm
B Dump height 2872 mm
C Maximum bucket base height 3011 mm
D Maximum bucket pivot point height 3211 mm
E Maximum bucket top height 4040 mm
F Reach at maximum lifting height and 42°
tilt-out angle
818 mm
Fmax. Reach at 42° tilt-out angle 1517 mm
G Digging depth 80 mm
H Height above the cab 2725 mm
I Height above exhaust 2600 mm
J Ground clearance 295 mm
K Wheel base 2150 mm

Product Description Service Manual
Technical Data
2.1-2 o f 2 8 L506 - 776 / from 9099 L508 - 778 / from 9099
L507 - 777 / from 9099 L509 - 779 / from 9099
L510 - 782 / from 9099
copyright by
MJFCIFSS
L Overall length 5295 mm
Turning radius over bucket outer edge 3690 mm
Lifting force (SAE) 39 kN
Breakout force (SAE) 43 kN
Tipping load when straight 3540 kg
Tipping load articulated at 30° 3231 kg
Angle of articulation (to each side) 30 °
Operating weight 5160 kg
Tractive force 4587 daN
Travel speed in travel range 1,
forward and reverse
0 - 6 km/h
forward and reverse
0 - 20 km/h
Sound pressure level in cab in L pA
according to ISO 6396
70 dB (A)
Valid for: L507 - 777 / from 9099

Technical Data
L506 - 776 / from 9099 L509 - 779 / from 9099 2.1-3 o f 2 8
L507 - 777 / from 9099 L510 - 782 / from 9099
L508 - 778 / from 9099
copyright by
MJFCIFSS
2550 mm
tilt-out angle
818 mm
forward and reverse
0 - 6 km/h
forward and reverse
0 - 20 km/h
70 dB (A)

Technical Data
2.1-4 o f 2 8 L506 - 776 / from 9099 L508 - 778 / from 9099
L507 - 777 / from 9099 L509 - 779 / from 9099
L510 - 782 / from 9099
copyright by
MJFCIFSS
Valid for: L508 - 778 / from 9099
2555 mm
tilt-out angle
817 mm
Fmax Reach at 42° tilt-out angle 1515 mm

Technical Data
L506 - 776 / from 9099 L509 - 779 / from 9099 2.1-5 o f 2 8
L507 - 777 / from 9099 L510 - 782 / from 9099
L508 - 778 / from 9099
copyright by
MJFCIFSS
Travel speed in travel range 1, forward and
reverse
0 - 6 km/h
Travel speed in travel range 2, forward and
reverse
0 - 20 km/h
70 dB (A)
Valid for: L509 - 779 / from 9099
2641 mm

Technical Data
2.1-6 o f 2 8 L506 - 776 / from 9099 L508 - 778 / from 9099
L507 - 777 / from 9099 L509 - 779 / from 9099
L510 - 782 / from 9099
copyright by
MJFCIFSS
tilt-out angle
909 mm
forward and reverse
0 - 6 km/h
forward and reverse
0 - 20 km/h
70 dB (A)

Technical Data
L506 - 776 / from 9099 L509 - 779 / from 9099 2.1-7 o f 2 8
L507 - 777 / from 9099 L510 - 782 / from 9099
L508 - 778 / from 9099
copyright by
MJFCIFSS
Valid for: L510 - 782 / from 9099
– With 405 / 70 R20 tyres
– Tipping loads and weights include all lubricants, full fuel tank, ROPS/
2676 mm
tilt-out angle
874 mm
Fmax Reach at 42° tilt-out angle 1605 mm

Technical Data
2.1-8 o f 2 8 L506 - 776 / from 9099 L508 - 778 / from 9099
L507 - 777 / from 9099 L509 - 779 / from 9099
L510 - 782 / from 9099
copyright by
MJFCIFSS
forward and reverse
0 - 6 km/h
forward and reverse
0 - 20 km/h
70 dB (A)
2.1.2 Diesel engine
Diesel engine
Valid for: L506 - 776 / from 9099
Engine model D404T-00
Type / cylinders 4-cylinder inline
Combustion Four-stroke
direct injection
Capacity 2440 cm³
Rated power as per ISO 9249 42 / 57 kW / PS
Rated speed 2800 min
-1
Maximum torque at 1680 min
-1
209 Nm
Lower idle speed 850
50
min
-1
Upper idle speed 3040 +80
min-1
Cylinder bore 86 mm
Stroke 105 mm
Compression ratio 18:1
Combustion pressure 24 - 28 bar
Injection nozzles / operating pressure 220 bar
Firing order 1-3-4-2
Inlet and outlet valve lash Hydraulic
adjustment
Injection pump Pump elements
Controller Mechanical
Turbocharger Constant
Longitudinal / traverse inclinability 30 °
Current / power consumption of starter 12 / 2.2 V / kW
Alternator voltage output 12 V
Alternator current output 65 A
Conversion factor
Frequency KL.W / engine speed
4.115
Coolant thermostat opening temperature 82.2 °C

Technical Data
L506 - 776 / from 9099 L509 - 779 / from 9099 2.1-9 o f 2 8
L507 - 777 / from 9099 L510 - 782 / from 9099
L508 - 778 / from 9099
copyright by
MJFCIFSS
Minimum pressure in cooling system after
pump
0.7 bar
Auxiliary drive transmission 1.03 i
Weight 232 kg
Emission thresholds comply with EU – RL 97/68 EC Stage II
Valid for: L506 - 777 / from 9099; L508 - 778 / from 9099
direct injection
Capacity 2440 cm³
-1
-1
227 Nm
Lower idle speed 850 50
min
-1
Upper idle speed 3040
+80
min
-1
Cylinder bore 86 mm
Stroke 105 mm
Firing order 1-3-4-2
adjustment
Conversion factor
4.115
pump
0.7 bar
Weight 232 kg

Technical Data
2.1-10 o f 2 8 L506 - 776 / from 9099 L508 - 778 / from 9099
L507 - 777 / from 9099 L509 - 779 / from 9099
L510 - 782 / from 9099
copyright by
MJFCIFSS
Valid for: L509 - 779 / from 9099
direct injection
Capacity 3050 cm³
-1
Maximum torque at 1680 min-1
262 Nm
Lower idle speed 850
50
min
-1
+80
min
-1
Cylinder bore 86 mm
Stroke 105 mm
Firing order 1-2-4-5-3
adjustment
Conversion factor
4.115
pump
1.4 bar
Weight 237 kg
Valid for: L510 - 782 / from 9099
direct injection
Capacity 3050 cm³
-1
-1
281 Nm
Lower idle speed 850 50
min
-1

Technical Data
L506 - 776 / from 9099 L509 - 779 / from 9099 2.1-11 o f 2 8
L507 - 777 / from 9099 L510 - 782 / from 9099
L508 - 778 / from 9099
copyright by
MJFCIFSS
+80
min
-1
Cylinder bore 86 mm
Stroke 105 mm
Firing order 1-2-4-5-3
adjustment
Conversion factor
4.115
pump
1.4 bar
Weight 237 kg
Coupling
Type CF-K-100-10-
64137
-
Tightening torque for elastic element fixing
bolts (8 pcs.)
40 Nm
Tightening torque for start coupling fixing
bolts (2 pcs.)
45
+5
Nm
Fuel system
Tank capacity, FULL 80 l
Tank capacity, RESERVE 20 l
Fuel pre-filter
Type In-line filter -
Filtration grade 700 µ

Technical Data
2.1-12 o f 2 8 L506 - 776 / from 9099 L508 - 778 / from 9099
L507 - 777 / from 9099 L509 - 779 / from 9099
L510 - 782 / from 9099
copyright by
MJFCIFSS
Fuel fine filter
Type Replaceable
cartridge
-
Vaccum switch
Air filter contamination vacuum switch
activation point
50 mbar
Pre-glow system
Resistance 1
2.1.3 Cooling system
Cooling system
Fan speed (depending on engine speed and
temperature)
470 - 3100 min
-1
Operating pressure, fan speed at 1100 mA
Coolant up to 87 °C, Hydraulic oil up to 57 °C
At low idle:
At high idle:
6
±3
470
±50
10
±3
580
±50
bar
min
-1
bar
min
-1
Operating pressure, fan speed at 380 mA
Coolant 92 °C to 100 °C
Hydraulic oil 75 °C to 90 °C
At low idle:
At high idle:
20 ±3
1000
±100
140
±10
2600
±100
bar
min
-1
bar
min
-1
Proportional pressure relief valve resistance
at 20 °C
4,8
Pressure relief valve 210 bar
Hydraulic oil and coolant temperature sensors
Measuring range -30 to +130 °C
Resistance at 20°C 1112
Gear pump
Capacity 9 cm³
Flow rate (at rated speed) 26 l/min

Technical Data
L506 - 776 / from 9099 L509 - 779 / from 9099 2.1-13 o f 2 8
L507 - 777 / from 9099 L510 - 782 / from 9099
L508 - 778 / from 9099
copyright by
MJFCIFSS
Gear motor
Displacement 8 cm³
Maximum pressure 210 bar
2.1.4 Travel hydraulics
Variable displacement pump
Valid for: L506 - 776 / from 9099; L507 - 777 / from 9099; L508 - 778 / from 9099;
ID 10023219
Control type DA
Maximum capacity 40 cm³
Flow rate at rated speed 109 l/min
Maximum swivel angle (both sides) 20 °
Speed (at rated speed) 2800 min
-1
Power L506 37.5 kW
Power L507, L508 41.5 kW
Replenishing pump capacity 8.6 cm³
Replenishing pump flow rate
(at rated speed)
22 l/min
Inlet restrictor diameter 1.8 mm
Swivel restrictor diameter 0.8 mm
Travel direction solenoid current
consumption
2.5 A
Travel direction solenoid resistance 5 Ohm
Replenishing pressure at upper idle speed 31 2
bar
Start of regulation 1100
±50
min
-1
Pump output at 400 bar 2300
±100
min
-1
Pressure relief and replenishing valves 460 10
bar
Pressure cut-off 430
5
bar
Weight 31 kg
Valid for: L509 - 779 / from 9099; L510 - 782 / from 9099; ID 5717294
Control type DA
Maximum capacity 56 cm³
Flow rate at rated speed 154 l/min
Maximum swivel angle (both sides) 20 °
Speed (at rated speed) 2800 min
-1
Power L508 41.5 kW
Power L509 48.5 kW
Power L510 52.2 kW
Replenishing pump capacity 11.6 cm³
Replenishing pump flow rate 29.5 l/min

Technical Data
2.1-14 o f 2 8 L506 - 776 / from 9099 L508 - 778 / from 9099
L507 - 777 / from 9099 L509 - 779 / from 9099
L510 - 782 / from 9099
copyright by
MJFCIFSS
(at rated speed)
Inlet restrictor diameter 1.8 mm
Swivel restrictor diameter 1.0 mm
Travel direction solenoid current consumption 2.5 A
Travel direction solenoid resistance 5 Ohm
Replenishing pressure at upper idle speed 30
2
bar
Start of regulation 1100
±50
min
-1
Pump output at 400 bar 2300 ±100
min-1
Pressure relief and replenishing valves 490
10
bar
Pressure cut-off 460
5
bar
Weight 38 kg
Variable displacement motor
ID 10023569
Type A6VM 80 DA
Maximum displacement 80 cm³
Minimum displacement 19.2 cm³
Maximum swivel angel 25 °
Minimum swivel angle 5.8 °
Maximum speed 5230 min
-1
Torque ( p 400 bar) 509 Nm
Swivel restrictor (size) 0.30 mm
Regulating piston surface ratio 8 :100
Maximum discharge valve capacity 5.0 l
Discharge valve orifice diameter 1.4 mm
Current consumption of travel direction and
travel range 1 solenoid valves
2.5 A
Resistance of travel direction and travel
range 1 solenoid valves
5 Ohm
Weight 34 kg
Control range while driving L506 220
±10
bar
Control range while driving L507, L508 230
±10
bar
Type A6VM 107 DA
Maximum displacement 107 cm³
Minimum displacement 32.3 cm³
Maximum swivel angel 25 °
Minimum swivel angle 7.3 °
Maximum speed 4480 min
-1
Torque ( p 400 bar) 681 Nm
Swivel restrictor (size) 0.45 mm

Technical Data
L506 - 776 / from 9099 L509 - 779 / from 9099 2.1-15 o f 2 8
L507 - 777 / from 9099 L510 - 782 / from 9099
L508 - 778 / from 9099
copyright by
MJFCIFSS
Regulating piston surface ratio 8 :100
Maximum discharge valve capacity 8 l
Discharge valve orifice diameter 1.8 mm
Current consumption of travel direction and
travel range 1 solenoid valves
2.5 A
Resistance of travel direction and travel
range 1 solenoid valves
5 Ohm
Weight 47 kg
Control range while driving 210
±10
bar
2.1.5 Working hydraulics
Working hydraulics pump
Capacity 23 cm³
Flow rate at rated speed 64.4 l/min
Speed at rated speed 2800 min
-1
Power L506 22.5 KW
Power L507 24.7 KW
LS steering pressure relief valve 180
10
bar
ID 10023228
Capacity 33 cm³
Flow rate at rated speed 92.4 l/min
Speed at rated speed 2800 min-1
Power L508, L509 29.3 KW
Power L510 33.8 KW
LS steering pressure relief valve 180
10
bar
Control block
Spool valve diameter 14 mm
Piston stroke, both sides 7.13 mm
Primary pressure relief valve L506, L507 230
5
bar
Primary pressure relief valve L508, L509 190
5
bar
Primary pressure relief valve L510 210 5
bar
Secondary pressure relief valve / lifting
(+ 1 turn)
220
5
bar
Secondary pressure relief valve / tilting in
(+ 1 turn)
220
5
bar
Secondary pressure relief valve / tilting out
(+ 1 turn)
170
5
bar

Technical Data
2.1-16 o f 2 8 L506 - 776 / from 9099 L508 - 778 / from 9099
L507 - 777 / from 9099 L509 - 779 / from 9099
L510 - 782 / from 9099
copyright by
MJFCIFSS
Secondary pressure relief valve / additional
equipment (+ 1 turn)
195
5
bar
Weight 13.7 kg
Pilot control valve
Retaining solenoid voltage 12 V
Retaining solenoid current consumption 1.22 A
Retaining solenoid resistance 60 Ohm
Weight 5.25 kg
Pilot control hydro accumulator
Hydro accumulator volume 320 cm³
Preload pressure (nitrogen filling) 15 bar
Lift cylinder
Piston diameter 80 mm
Rod diameter 40 mm
Stroke length 510 mm
Minimum installation length 835 mm
Lifting at rated load 4.9 sec
Lowering empty 4.2 sec
Piston rod bearing tightening torque WN 4122-026
Piston tightening torque 650 Nm
Weight 28.5 kg
Valid for: L508 - 778 / from 9099; L509 - 779 / from 9099; L510 - 782 / from 9099
Rod diameter 50 mm
Lifting at rated load 4.9 sec
Lowering empty 4.5 sec
Weight 36.8 kg

Technical Data
L506 - 776 / from 9099 L509 - 779 / from 9099 2.1-17 o f 2 8
L507 - 777 / from 9099 L510 - 782 / from 9099
L508 - 778 / from 9099
copyright by
MJFCIFSS
Tilt cylinder
Rod diameter 40 mm
Tilting out at rated load 1.5 sec
Weight 27.3 kg
Valid for: L508 - 778 / from 9099
Rod diameter 50 mm
Weight 34 kg
Rod diameter 50 mm
Weight 35.5 kg
Hydraulic tank
Hydraulic tank capacity 55 l
Weight 145 kg
Hydraulic tank capacity 75 l
Weight 200 kg

Technical Data
2.1-18 o f 2 8 L506 - 776 / from 9099 L508 - 778 / from 9099
L507 - 777 / from 9099 L509 - 779 / from 9099
L510 - 782 / from 9099
copyright by
MJFCIFSS
Return suction filter
Type RKM 201 -
Filtration grade 10 µm
Pre-tension valve 0.5 bar
Replenishing valve Yes -
Replenishing strainer 125 µm
Bypass valve 2.5 bar
Temperature valve 55 - 60 C°
Bleeder filter
Bleeder filtration grade 7 µm
Inlet opening pressure 0.03 bar
Outlet opening pressure 0.35 bar
Filler strainer filtration grade 800 µm
2.1.6 Steering system
Servostat
Displacement 250 cm³
Displacement in emergency operation 250 cm³
Secondary pressure relief valves 240
10
bar
Weight 6.25 kg
Steering cylinder
Rod diameter 30 mm
Weight 13.4 kg
2.1.7 Brake system
Main brake cylinder
Type SAFIM -
Maximum brake pressure
(at 60 kg pedal force)
80 bar

Technical Data
L506 - 776 / from 9099 L509 - 779 / from 9099 2.1-19 o f 2 8
L507 - 777 / from 9099 L510 - 782 / from 9099
L508 - 778 / from 9099
copyright by
MJFCIFSS
Drum brake
Drum diameter 203 mm
Brake pads with 60 mm
Equalising reservoir
Filling quantity 0.2 l
Oil specification Hydraulic oil HLPD
SAE 10 W
-
Brake light pressure switch
Switch type Normally open -
Switching point, falling 10
±1
bar
Thread M10 x 1 mm
2.1.8 Electrical system
Batteries
Number of batteries 1 Unit
Voltage 12 V
Capacity 100 Ah
Cold test current (at -18°C – EN 60095-1) 760 A
2.1.9 Transfer gear
Transfer gear
Type 315 -
Transmission 2.23 -
Gear cover screw tightening torque 48 - 53 Nm
Drive flange cover screw tightening
torque
52 - 58 Nm
Input shaft screw tightening torque 250 - 270 Nm

Technical Data
2.1-20 o f 2 8 L506 - 776 / from 9099 L508 - 778 / from 9099
L507 - 777 / from 9099 L509 - 779 / from 9099
L510 - 782 / from 9099
copyright by
MJFCIFSS
Type 311 -
Transmission 2.28 -
Gear cover screw tightening torque 48 - 53 Nm
Drive flange cover screw
tightening torque
52 - 58 Nm
Input shaft screw tightening torque 250 - 270 Nm
2.1.10 Axles and cardan shaft
Front axle
Type 111/70 -
Self-locking differential 45 %
Width 1486 mm
Overall transmission 21.75 i
Differential transmission 3.63 i
Wheel hub transmission 6.0 i
Wheel lug tightening torque 450 Nm
Wheel lug spanner size 30 mm
Service brake Drum -
Cardan shaft flange DIN 120 -
Flange size 1530 mm
Weight 212 kg
Type 112/163 -
Self-locking differential 45 %
Width 1660 mm
Flange size 1660 mm
Weight 280 kg

Technical Data
L506 - 776 / from 9099 L509 - 779 / from 9099 2.1-21 o f 2 8
L507 - 777 / from 9099 L510 - 782 / from 9099
L508 - 778 / from 9099
copyright by
MJFCIFSS
Rear axle
Type 315/211/164 -
Locking value 25 %
Width 1486 mm
Flange size 1530 mm
Swing angle 5 °
Weight 290 kg
Type 311/212/113 -
Locking value 25 %
Width 1660 mm
Flange size 1660 mm
Swing angle 5 °
Weight 408 kg
Cardan shaft
Minimum length 1533 mm
Maximum length 1593 mm
Flange tightening torque 60 Nm
Weight 22 kg
Minimum length 1505 mm
Maximum length 1565 mm

Technical Data
2.1-22 o f 2 8 L506 - 776 / from 9099 L508 - 778 / from 9099
L507 - 777 / from 9099 L509 - 779 / from 9099
L510 - 782 / from 9099
copyright by
MJFCIFSS
Flange tightening torque 60 Nm
Weight 21 kg
2.1.11 Machine frame and ballast weight
Articulation bearing
Tightening torque of bolts 70 Nm
Left ballast weight
Weight 232 kg
Material GG10 -
Weight per ballast weight 408 kg
Material GG10 -
Valid for: L510 - 782 / from 9099
Material GG10 -
Right ballast weight
Valid for: L506 - 776 / from 9099
Material GG10 -
Material GG10 -
Material GG10 -

Technical Data
L506 - 776 / from 9099 L509 - 779 / from 9099 2.1-23 o f 2 8
L507 - 777 / from 9099 L510 - 782 / from 9099
L508 - 778 / from 9099
copyright by
MJFCIFSS
2.1.12 Automatic central lubrication system
Central lubrication pump EP-1
Flow per stroke 120 mm³
Transfer medium Greases up to
NLGI class 2
Maximum flow pressure 280 bar
System operating temperature
(taking into account the pumped medium)
min. -35
max. +80
°C
°C
Power system Electric
Power supply 12 V
Protection class IP 65
Reservoir position Upright
Direction of rotation of agitator Direction of
arrow
Default lubrication time 5 min
Default idle time 1 Hours
Adjustable lubrication time 1 - 16 min
Adjustable idle time 0.5 - 8 Hours
Progressive distributor
MX-F
Maximum operating pressure at input 300 bar
Distributor temperature range
(taking into account transfer medium)
min. -35
max. +100
°C
°C
Transfer medium Greases up to
NLGI class 2
MX-F 25
Flow per outlet 25 mm³
Flow per element 50 mm³
MX-F 45

Technical Data
2.1-24 o f 2 8 L506 - 776 / from 9099 L508 - 778 / from 9099
L507 - 777 / from 9099 L509 - 779 / from 9099
L510 - 782 / from 9099
copyright by
MJFCIFSS
MX-F 75
MX-F 105
2.1.13 Cab, heating and air-conditioning
Heating and ventilation
Number of blower levels 3
Air flow at blower level 1 / 2 / 3 615 / 750 / 1000 m³/h
Fan speed at blower level 1 / 2 / 3 2280 / 2735 / 3630 min
-1
Current consumption, unhindered 1 / 2 / 3 10.1 / 13.8 / 22.3 A
Voltage 12 V
Heating power 11.3 kW
Fresh and circulated air filter
Filter class EU5
Filter surface (effective) 0.58 m²
Air-conditioning system
Refrigerant R134a
Coolant quantity 1400 g
Cooling power 6.4 kW
Coolant oil PAG ZXL 100PG
Coolant oil quantity 150 cm
3
Pressure switch
Low pressure switch OFF 1.5 bar
Low pressure switch ON 2.9 bar
High pressure switch OFF 25.0 bar
High pressure switch ON 19.0 bar

Technical Data
L506 - 776 / from 9099 L509 - 779 / from 9099 2.1-25 o f 2 8
L507 - 777 / from 9099 L510 - 782 / from 9099
L508 - 778 / from 9099
copyright by
MJFCIFSS
Temperature switch
Temperature switch adjustment range -1 to +14 °C
Temperature switch activation
temperature
5
±1
°C
Temperature switch deactivation
temperature
1
±1
°C
2.1.14 Lift arms and quick-change device
Lift arm
Lift arm length 2150 mm
Weight of complete lift arms (without
cylinder)
467 kg
Bucket arm weight 335 kg
Deflection lever weight 88 kg
Weight of complete connecting link 44 kg
Lift arm length 2250 mm
Weight of complete lift arms
(without cylinder)
507 kg
Bucket arm weight 375 kg
Deflection lever weight 88 kg
Weight of complete connecting link 44 kg
Quick-change device
Control, activation and operation
Additional control
lever
-
Lockout Changeover valve -
Lockout display Visual -
A - system connection size 852 mm
B - width 852 mm
H - height 382 mm
T - depth 119 mm
Weight 49 kg

Technical Data
2.1-26 o f 2 8 L506 - 776 / from 9099 L508 - 778 / from 9099
L507 - 777 / from 9099 L509 - 779 / from 9099
L510 - 782 / from 9099
copyright by
MJFCIFSS
2.1.15 Equipment and accessories
Standard bucket
Valid for: L506 - 776 / from 9099
B - bucket width 1900 mm
B1 - loading size 1830 mm
H - height 863 mm
L - length with teeth 936 mm
L1 - length without teeth 820 mm
Specific material weight 1.8 t/m
3
Heaped bucket capacity (ISO 7546) 0.8 m
3
Weight 307 kg
Type of teeth ESCO V13 -
Number of teeth 7 Pc.

Technical Data
L506 - 776 / from 9099 L509 - 779 / from 9099 2.1-27 o f 2 8
L507 - 777 / from 9099 L510 - 782 / from 9099
L508 - 778 / from 9099
copyright by
MJFCIFSS
Valid for: L507 -777 / from 9099
H - height 863 mm
3
3
Weight 321 kg
Valid for: L508 - 778 / from 9099
H - height 901 mm
3
Heaped bucket capacity (ISO 7546) 1.0 m3
Weight 356 kg
Valid for: L509 - 779 / from 9099
H - height 915 mm
3
Heaped bucket capacity (ISO 7546) 1.1 m3
Weight 408 kg

Technical Data
2.1-28 o f 2 8 L506 - 776 / from 9099 L508 - 778 / from 9099
L507 - 777 / from 9099 L509 - 779 / from 9099
L510 - 782 / from 9099
copyright by
MJFCIFSS
Valid for: L510 - 782 / from 9099
H - height 915 mm
3
3
Weight 422 kg
Forklift
Prong length 1200 mm
L - Length (fork carrier + prongs) 1585 mm
K - Fork carrier width 1245 mm
H - Height (fork carrier + prongs) 860 mm
Weight (fork carrier + prongs) 255 kg

L506 - 776 / from 9099 L509 - 779 / from 9099 3.0-1 o f 4
L507 - 777 / from 9099 L510 - 782 / from 9099
L508 - 778 / from 9099
copyright by
MJFCIFSS
3 Maintenance
3.0
Chapter contents
3 Maintenance........................................................................ 3.0-1
3.1 Maintenance and inspection schedule ...........................................3.1-1
3.2 Testing and adjustment plan...........................................................3.2-1
3.3 Testing and adjustment checklists..................................................3.3-1
3.4 Lubrication chart and filling quantities ............................................3.4-1
3.4.1 Table of filling quantities.......................................................3.4-1
3.4.2 Lubrication chart...................................................................3.4-3
3.5 Maintenance tasks..........................................................................3.5-1
3.5.1 Preparatory tasks for maintenance ......................................3.5-1
3.5.2 Checking the machine for external damage.........................3.5-4
3.5.3 Checking that all screw connections are tight......................3.5-5
3.5.4 Sealing any leaks .................................................................3.5-5
3.5.5 Checking the oil level in the diesel engine ...........................3.5-5
3.5.6 Changing the engine oil........................................................3.5-6
3.5.7 Replacing the oil filter ...........................................................3.5-6
3.5.8 Draining off condensate from the fuel fine filter....................3.5-7
3.5.9 Replacing the fuel pre-filter ..................................................3.5-8
3.5.10 Cleaning the service cap and dust extraction valve on the
air filter..................................................................................3.5-9
3.5.11 Changing the air filter main element when indicated by
the vacuum switch................................................................3.5-9
3.5.12 Checking the coolant level .................................................3.5-10
3.5.13 Checking the antifreeze......................................................3.5-11
3.5.14 Cleaning the cooling system ..............................................3.5-13
3.5.15 Checking the oil level in the hydraulic tank ........................3.5-13
3.5.16 Lubricating the universal joints on the pilot control device.3.5-14
3.5.17 Changing the hydraulic oil..................................................3.5-14
3.5.18 Changing the return suction filter .......................................3.5-15
3.5.19 Replacing the bleeder filter on the hydraulic tank ..............3.5-15
3.5.20 Checking the steering.........................................................3.5-16
3.5.21 Lubricating the bearing points on the steering cylinders....3.5-16
3.5.22 Checking the service brake and parking brake ..................3.5-16

Maintenance Service manual
3.0-2 o f 4 L506 - 776 / from 9099 L508 - 778 / from 9099
L507 - 777 / from 9099 L509 - 779 / from 9099
L510 - 782 / from 9099
copyright by
MJFCIFSS
3.5.23 Checking the oil level in the equalising reservoir of the
brake system...................................................................... 3.5-17
3.5.24 Checking the gap and wear on the brake linings............... 3.5-18
3.5.25 Checking the indicator lamps and lighting......................... 3.5-18
3.5.26 Checking the oil level in the transfer gear ......................... 3.5-18
3.5.27 Changing the gear oil in the transfer gear ......................... 3.5-19
3.5.28 Checking the tightness of the wheel lugs (once after 50,
100 and 250 h)................................................................... 3.5-19
3.5.29 Checking the tightening torque of the front axle
fastening bolts.................................................................... 3.5-19
3.5.30 Greasing the lubrication points on the rear axle kingpin
bearings ............................................................................. 3.5-20
3.5.31 Checking the axle oil levels ............................................... 3.5-20
3.5.32 Changing the axle gear oil................................................. 3.5-21
3.5.33 Checking and lubricating the drive shaft............................ 3.5-22
3.5.34 Checking and adjusting the tyre pressure ......................... 3.5-22
3.5.35 Lubricating the articulated oscillating bearing and the
rear oscillating bearing....................................................... 3.5-23
3.5.36 Lubriating the door hinges ................................................. 3.5-23
3.5.37 Cleaning or replacing the fresh air and recirculated air
filter .................................................................................... 3.5-23
3.5.38 Lubricating the lift arms and attachment............................ 3.5-24
3.5.39 Lubricating the quick-change device ................................. 3.5-25
3.5.40 Check the bearing bushings on the lift arms ..................... 3.5-25
3.5.41 Checking that the quick-change device is working
properly.............................................................................. 3.5-26
3.6 Testing and adjustment tasks ........................................................ 3.6-1
3.6.1 Preparing for testing and adjustment................................... 3.6-1
3.6.2 Safety precautions for testing and adjustment .................... 3.6-1
3.6.3 Bring the machine up to operating temperature .................. 3.6-2
3.6.4 Checking the diesel engine speed....................................... 3.6-2
3.6.5 Checking the fan motor pressure relief valve ...................... 3.6-3
3.6.6 Checking the travel hydraulics in a blocked condition......... 3.6-4
3.6.7 Check the replenishing pressure of the variable
displacement pump.............................................................. 3.6-5
3.6.8 Checking the start of regulation of the travel pump............. 3.6-5
3.6.9 Checking the output of the travel pump............................... 3.6-6
3.6.10 Checking the pressure relief and replenishing valve of
the variable displacement pump.......................................... 3.6-7
3.6.11 Checking the pressure cut-off of the variable
displacement pump.............................................................. 3.6-7
3.6.12 Checking the variable displacement motor in the control
range.................................................................................... 3.6-8

Service manual Maintenance
L506 - 776 / from 9099 L509 - 779 / from 9099 3.0-3 o f 4
L507 - 777 / from 9099 L510 - 782 / from 9099
L508 - 778 / from 9099
copyright by
MJFCIFSS
3.6.13 Checking the secondary pressure relief valves on the
control block .........................................................................3.6-9
3.6.14 Checking the primary pressure relief valves on the
control block .........................................................................3.6-9
3.6.15 Checking the pressure relief valve of the steering
system ................................................................................3.6-10
3.6.16 Checking the play of the inch/brake pedal .........................3.6-10
3.7 Lubricants and fuels........................................................................3.7-1
3.7.1 Lubricating oils for diesel engines ........................................3.7-2
3.7.2 Diesel fuels...........................................................................3.7-3
3.7.3 Coolants for diesel engines..................................................3.7-5
3.7.4 Hydraulic oils ........................................................................3.7-6
3.7.5 Lubricating oils for the transmission.....................................3.7-8
3.7.6 Brake oil................................................................................3.7-8
3.7.7 Grease for general lubrication points ...................................3.7-8

Service manual Maintenance
Maintenance and inspection schedule
L506 - 776 / from 9099 L509 - 779 / from 9099 3.1-1 o f 4
L507 - 777 / from 9099 L510 - 782 / from 9099
L508 - 778 / from 9099
copyright by
MJFCIFSS
3.1 Maintenance and inspection schedule
The following abbreviations are used in this section:
– h = service hours
– OM = operating manual
– SM = service manual
Various symbols (solid or empty circles, boxes and stars) are used to
indicate the maintenance tasks, which fall into two main types.
The symbols have the following meanings:
Table with solid circle, box or star
– Responsibility for carrying out the maintenance work lies with the
machine operator or his maintenance personnel.
– This affects the maintenance intervals every 10 and 50 service hours (h)
and non-scheduled intervals.
The symbols have the following meanings:
Table with empty circle, box or star, or service hours (h)
– The maintenance and inspection work must be performed or supervised
by authorised engineers from LIEBHERR or its authorised dealers.
– This affects the maintenance intervals on delivery, every 500, 1000,
2000 service hours (h), and at unscheduled times.
You will find a list of the spare parts needed for maintenance and inspection
work in the “SERVICE PACKAGE” of the spare parts list.

Liebherr L510-782 Wheel Loader Service Repair Manual SN：9099

Liebherr L510-782 Wheel Loader Service Repair Manual SN：9099

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Liebherr L510-782 Wheel Loader Service Repair Manual SN：9099