Operating elements for driving
3.2 Short description of the operating elements
3 - 48 3 112 993 en Operating manual GMK 6400
12.07.2013
3.2.11 Brakes
Service brake
Display – supply pressure in brake circuits
Warning – supply pressure in the displayed brake circuit too low
Additional brakes Engine retarder/transmission retarder
à Additional brakes, p. 5 - 44
Multipurpose switch
Instrument panel
Additional brake indicator lamp
1 Current supply pressure in brake circuit 1
2 Current supply pressure in brake circuit 2
3Red – supply pressure insufficient
White – supply pressure sufficient
4–On: Supply pressure below approx. 5 bar (73 psi)
– Off: Supply pressure above 5.5 bar (80 psi)
à p. 5 - 9
0 To the front: Engine retarder and transmission retarder off
1 To the rear: Engine retarder
2 To the rear: Engine retarder, transmission retarder 50%
3 To the rear: Engine retarder, transmission retarder 75%
4 To the rear: Engine retarder, transmission retarder 100%
–On: Transmission retarder on
– Off: Transmission retarder off
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