Crane operation
10.5 Crane operation with main boom
10 - 98 3 302 633 en Operating Instructions GMK5250L
27.09.2017
The distance between the hook block and the boom head changes during
telescoping. Ensure that the hook block does not trigger the lifting limit
switch or touch the ground.
• Additionally carry out the following movements
– The
Lower hoist movement when extending and
–the
Raise hoist movement when retracting.
The control lever movements for telescoping vary depending on the
configuration.
– With telescoping assigned to the right-hand lever
– With telescoping assigned to the left-hand lever
Telescoping will only start if the arrow (1) or (2) for the selected telescoping
direction is green.
You can regulate the speed by moving the control lever and changing the
engine speed with the accelerator.
S
Risk of damage to the hoist rope!
The rope can become slack if the hook block touches the ground during
retraction operations. Rope loops will form, which can cause the load to slip
and damage the hoist rope.
To extend: • Push the control lever to the right.
To retract:
• Push the control lever to the left.
To extend:
• Push the control lever forwards.
To retract:
• Pull the control lever backwards.
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