Crane operation
10.1 Before operating the crane
Operating Instructions GMK5250L 3 302 633 en 10 - 17
27.09.2017
10.1.8 Switching the houselock on/off
If the truck crane is equipped with a houselock, the turntable can be locked
in the entire slewing range. For locking, a pin extends and blocks the slew-
ing gear.
Switching on the
houselock
• Slew the superstructure to the position in which it is to be locked and then
stop the slewing movement.
• Open the Superstructure lock menu (1).
Switching off the slewing gear
The slewing gear brake must be engaged
when operating the houselock.
• Press the button (1) once.
The slewing gear will be switched off and the
slewing gear brake applied.
– Symbol (2) is red.
–Lamp (3) lights up.
s
S
Risk of damage during slewing!
Always switch off the slewing gear before you operate the houselock. The
system will be damaged if the superstructure is slewed during the locking
procedure.
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