Crane operation
11.3 Crane operation with main boom
11 - 98 3 112 993 en Operating manual GMK 6400
12.07.2013
11.3.9 Slewing gear
You can have the operating hours of the slewing gear displayed;
à p. 11 - 110.
Braking the
slewing
movement
You may only brake the slewing movement with the slewing gear brake.
• Move control lever (2) towards its initial position – the slewing movement
will be braked.
At the initial position, the slewing movement will be stopped. At the same
time the slewing gear brake will engage, and lamp (1) will light up.
G
Danger of overturning when slewing with a rigged counterweight
Always check before slewing whether slewing is permitted in the truck
crane's current rigging mode (counterweight, outrigger span, working
radius).
Correct the rigging mode if necessary;
à Slewing with rigged counterweight,
p. 12 - 89.
S
Risk of the main boom buckling
On no account switch the slewing gear off to brake it; only switch the
slewing gear off when the superstructure has stopped rotating.
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