Driving
5.1 Before driving
5 - 10 3 112 xxx en Operating Manual GMK6300L
xx.xx.xxxx
Supply pressure The brake system and some consumers (e.g. differential locks, driver's seat,
etc.) require sufficient supply pressure in order function properly.
• Check that the supply pressure is approx. 8 bar (116 psi).
If the supply pressure is too low, such as after repairs, you can build it up as
follows.
Building up supply pressure
• Check that the parking brake is applied.
• Allow the engine to run. The supply pressure builds up and you can speed
up this process by pressing the accelerator.
The light (1) turns off once the supply pressure reaches approx. 5.5 bar
(80 psi).
• Refill the supply pressure until
– approx. 8 bar (116 psi) is reached and
– a valve audibly discharges pressure.
There is now sufficient supply pressure.
G
Risk of accidents by truck crane moving unintentionally!
Make sure that the lever is pointing down before building up the supply
pressure.
This prevents the parking brake from releasing as soon as sufficient pres-
sure is available and the truck crane moving unintentionally.
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