Driving
5.2 Operating the transmission
Operating manual GMK 6400 3 112 993 en 5 - 25
12.07.2013
5.2.3 Selecting the direction of travel and starting gear
Selecting the
driving direction
Before driving at temperatures below –20°C (–4°F); à p. 5 - 36
The following requirements must be met before selecting the driving direc-
tion:
– The truck crane is stationary,
– The parking brake is applied,
– The accelerator is not pressed.
• Start the engine; à p. 4 - 16
If the supply pressure does not suffice in order to shift the transmission, the
display will indicate AL (airless).
If necessary, wait until the supply pressure has built up, and the AL entry
goes out;
à Building supply pressure, p. 5 - 9.
• Release the accelerator.
• In order to:
–Drive forward, shift to position D,
–Drive backward, shift to position R. An acoustic signal sounds if addi-
tional equipment is present.
The operating mode
Automatic is now selected. An appropriate starting gear
is selected and displayed:
– For forward travel, e.g. 3rd gear,
– For reverse travel, e.g. 2nd gear.
The clutch is not engaged (only when you press the accelerator).
s
G
Risk of accident from uncontrolled forward motion
When you press the accelerator, the clutch is engaged immediately after
the start-up gear is (automatically) selected, and the truck crane will start to
move.
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