Crane operation
10.5 Crane operation with main boom
Operating Instructions GMK5250L 3 302 633 en 10 - 113
27.09.2017
10.5.7 High-speed mode
H
The slewing gear cannot be operated in high-speed mode.
You can switch on the high-speed mode for a higher speed.
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 the button at the left on – for (1).
High-speed mode will be active until you release the button.
Continuous operation
• Press the button at the right on – for (2).
High-speed mode will be enabled until you press the button again.
The symbol (1) indicates the current status:
H
During lowering of the boom, high-speed mode only supports the start-up
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.
s
G
Risk of accidents due to the suddenly accelerating movement!
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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