Liebherr L506 L507 L508 L509 L510 Stereo Wheel Loader Service Repair Factory Manual is a perfect manual, which contains a lot of information. I believe that would be what you need.

Covers the following type, production number, Serial Number:

L506 S/N: 9099 CONSTRUCTION NUMBER:776
L507 S/N: 9099 CONSTRUCTION NUMBER:777
L508 S/N: 9099 CONSTRUCTION NUMBER:778
L509 S/N: 9099 CONSTRUCTION NUMBER:779
L510 S/N: 9099 CONSTRUCTION NUMBER:782

Service Repair Factory Manual Covers:

General Information
Product Description
Maintenance
Diesel Engine
Cooling System
Travel Hydraulics
Working Hydraulics
Steering System
Brake System
Electrical System
Transfer Gear
Axles and Cardan Shaft
Machine Frame and Ballast Weight
Central Lubrication System
Coverings and Access
Cab, Heating and Air-Conditioning
Lift Arms and Quick-Change Device
Attachments and Accessories
Repair Work and Troubleshooting

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File Format: PDF
Compatible: All Versions of Windows & Mac
Language: English
Requirements: Adobe PDF Reader & WinZip

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Liebherr L506 L507 L508 L509 L510 Stereo Wheel Loader General Information
Liebherr L506 L507 L508 L509 L510 Stereo Wheel Loader Tools
Liebherr L506 L507 L508 L509 L510 Stereo Wheel Loader Technical Data / Maintenance Instructions
Liebherr L506 L507 L508 L509 L510 Stereo Wheel Loader Engine
Liebherr L506 L507 L508 L509 L510 Stereo Wheel Loader Coupling / Splitterbox
Liebherr L506 L507 L508 L509 L510 Stereo Wheel Loader Hydraulic System
Liebherr L506 L507 L508 L509 L510 Stereo Wheel Loader Hydraulic Components
Liebherr L506 L507 L508 L509 L510 Stereo Wheel Loader Electrical System
Liebherr L506 L507 L508 L509 L510 Stereo Wheel Loader Slewing Gear
Liebherr L506 L507 L508 L509 L510 Stereo Wheel Loader Slewing Ring
Liebherr L506 L507 L508 L509 L510 Stereo Wheel Loader Two Speed Gear Box / Travel Gear
Liebherr L506 L507 L508 L509 L510 Stereo Wheel Loader Axles / Track Components
Liebherr L506 L507 L508 L509 L510 Stereo Wheel Loader Steering
Liebherr L506 L507 L508 L509 L510 Stereo Wheel Loader Oscillating Axle Support
Liebherr L506 L507 L508 L509 L510 Stereo Wheel Loader Brake System
Liebherr L506 L507 L508 L509 L510 Stereo Wheel Loader Special Equipment / Accessory Kits
Liebherr L506 L507 L508 L509 L510 Stereo Wheel Loader Cab / Heater / Air Conditioning System
Liebherr L506 L507 L508 L509 L510 Stereo Wheel Loader Undercarriage / Uppercarriage / Attachments
Liebherr L506 L507 L508 L509 L510 Stereo Wheel Loader Arrangement of Tanks