Driving mode
5.1 Before driving
Operating manual 3 302 819 en 5 - 9
GMK3060
13.12.2018
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 about 8 bar (116 psi).
If the supply pressure is too low, such as after repairs, you can build it up as
follows.
building supply pressure
• Check that the parking brake is applied.
• Allow the engine to keep running. 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 about 5.5 bar (80 psi).
• Build the supply pressure until:
– about 8 bar (116 psi) is reached and
– a valve audibly discharges pressure.
There is now sufficient supply pressure.
s
G
Risk of accidents by truck crane moving unintentionally!
Make sure that the lever is pointing to the rear before building up the supply
pressure.
This prevents the parking brake releasing as soon as sufficient pressure is
available and the truck crane moving unintentionally.
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