Rigging work
11.8 Outrigger operation
Operating Instructions GMK5250L 3 302 633 en 11 - 53
27.09.2017
11.8.8 Extending/retracting supporting cylinders
H
Do not extend the supporting cylinders to their absolute limit. The support-
ing 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. 11 - 54,
– On the hand-held control;
à p. 11 - 55,
– In the crane cab;
à p. 11 - 56.
s
G
Risk of overturning if the load bearing capacity of the ground is too low!
Enlarge the load-bearing area if the ground cannot withstand the resulting
outrigger pressure.
This prevents the ground under the outrigger pad giving way and causing
the truck crane to tilt and overturn.
G
Risk of accidents if the supporting cylinders are out of sight!
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 being 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 prevents the tyres being punctured or damaged when the truck crane
is lowered.
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