Rigging work
12.5 Operating the outriggers
Operating manual 3 302 819 en 12 - 39
GMK3060
13.12.2018
12.5.8 Extending/retracting supporting cylinders
H
Do not extend the supporting cylinders to their absolute limit. 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;
à p. 12 - 40,
– In the crane cab;
à p. 12 - 41.
s
G
Danger of overturning due to insufficient load bearing capacity of the
ground!
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 points under the boom.
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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