Driving modes and rigging for on-road driving
6.4 Rigging the main boom
Operating Instructions GMK5250L 3 302 633 en 6 - 23
27.09.2017
6.4.4 Retracting/fitting the derricking cylinder head pin
The derricking cylinder head axle is retracted and fitted with a pulling
device.
You must lower the main boom onto the main
boom rest before pulling off the head pin.
When the main boom is unrigged then the der-
ricking cylinder is fastened to the main boom
rest and secured using a tightening belt.
Operating the
lifting device
A lifting device is needed in order to relieve and level the derricking cylinder.
• Attach the lever to the holder (2).
(A) – Raise
• Close the drain plug (1) and pump the lever.
The piston rod (3) extends.
(B) – Lowering
• Slowly open the drain plug (1).
The piston rod (3) retracts.
s
S
Danger from using unsuitable lifting device
Have the lifting device serviced in time before the maintenance interval
specified on the label expires.
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