Rigging work
12.6 Outriggers
Operating manual GMK 6400 3 112 993 en 12 - 45
12.07.2013
12.6.9 Extending/retracting supporting cylinders
H
Do not extend the supporting cylinders as far as possible. The supporting
cylinders must have a remaining stroke of at least 25 mm (1 in) in order to
carry out alignment corrections.
There are various operating elements for moving the outrigger beams:
–On the
Outrigger control units; Ã p. 12 - 46,
– On the hand-held control;
à p. 12 - 47,
– In the crane cab;
à p. 12 - 48.
s
G
Danger of overturning due to insufficient load bearing capacity of the
ground
Enlarge the ground bearing area if the ground cannot withstand the result-
ing outrigger pressure.
This prevents the ground under the outrigger pad from giving way and
causing the truck crane to tilt and overturn.
G
Risk of accident if supporting cylinders cannot be seen
No one is allowed to be in the area of the supporting cylinders.
Observe the moving supporting cylinders or have them observed by a
banksman who is in visual contact with you.
S
Risk of damage to the supporting cylinders
Move the outriggers as uniformly as possible on all four support points.
This prevents the supporting cylinders from getting damaged due to one-
sided pressure.
S
Risk of damage to the tyres
Before retracting the supporting cylinders, remove any sharp-edged and
pointed materials from below the tyres.
This keeps the tyres from being punctured or damaged when the truck
crane is lowered.
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