Driving
5.1 Before driving
5 - 16 3 302 633 en Operating Instructions GMK5250L
27.09.2017
Switching the
suspension on
The suspension cylinders are enabled when the suspension is switched on.
This state must be established for on-road driving.
• Select and confirm the symbol (1).
When the suspension is switched on, the symbol (2) is green.
If the symbol (2) remains red then:
– the supply pressure may be too low. In this case, the suspension would
only be switched when sufficient supply pressure has built up;
à Building up supply pressure, p. 5 - 10,
or
– the axle loads are unevenly distributed after actuating the axle raising
system;
à p. 12 - 9.
Switching off
the suspension
When the suspension is switched off, the suspension cylinders are locked.
This state is intended only for crane operation.
• Select and confirm the symbol (1).
When the suspension is switched off, the symbol (2) is red.
G
Danger of overturning when switching on the suspension!
Do not switch the suspension on unless the truck crane has been rigged for
on-road driving and the main boom has been set down.
If the rigged truck crane was standing on its wheels the suspension struts
would be suddenly pushed together when the suspension was switched
on, causing them to be damaged and possibly causing the truck crane to
overturn.
S
Risk of damage to the axle lines!
Always switch the suspension on for on-road driving.
The axle lines may become damaged and the steering behaviour may
change if the suspension is switched off.
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