Crane operation
11.3 Crane operation with main boom
11 - 96 3 112 993 en Operating manual GMK 6400
12.07.2013
11.3.8 High-speed mode
H
The slewing gear cannot be operated at high speed.
You can switch on the high-speed mode for a higher speed.
Switch on
function
The
High speed function will only be enabled if the carrier ignition is switched
off.
• Turn off the carrier ignition, if necessary. Press the (1) button up once.
The lamp in the button should go out.
Derricking gear/
telescoping
mechanism
High-speed mode is always switched on and off for the derricking gear and
the telescoping mechanism at the same time.
To switch on briefly
• Press button (1) down on the right – inwards.
High-speed mode will be active until you release the button.
Continuous operation
• Press button (1) down on the left – outwards.
High-speed mode will be enabled until you press the button again.
The lamp (1) indicates the current status:
H
When lowering the boom, high-speed mode only supports the start of the
derricking procedure from steep boom positions. It does not increase the
derricking speed.
High-speed mode is disabled for raising when performing operations with
the lattice extension.
G
Risk of accident due to the suddenly accelerating movements
Reduce the engine speed before starting high-speed mode.
This will prevent movements from becoming excessively accelerated,
which may result in the truck crane starting to sway and overturning.
On: High-speed mode switched on
Off: High-speed mode switched off
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