Manitowoc Grove GMK 5250L Operating Instructions Manual page 306

Driving modes and rigging for on-road driving
6.4 Rigging the main boom
Pulling the
derricking cylinder
head axle
G
6 - 24
After you have pulled the head pin, you can no longer derrick the main
boom.
#
Risk of accident from falling derricking cylinder!
Always take the load off of the derricking cylinder using the lifting device
before retracting the head pin. This prevents the derricking cylinder from
falling down, injuring people or being damaged when the bolts are undone.
•
Secure the derricking cylinder with the tightening belt.
(A) – Releasing the head pin
•
Loosen the bolt (3) and remove the disc.
(B) – Relieving the head pin
•
Place the lifting device (2) underneath the
front middle of the derricking cylinder.
•
Carry out the Raise movement until the
bracket (1) is resting firmly on the derricking
cylinder.
Pulling out the head pin
•
(A) – Turn the switch (1) to the Pull position.
•
(B) – Insert the lever into the clamp (2).
•
Pump until the head pin (3) is completely
drawn out.
•
Carry out the Lower movement until the der-
ricking cylinder lies in the main boom rest.
•
(C) – Fasten the disc with the bolt (4).
•
Stow away the lever and the lifting device.
3 302 633 en Operating Instructions GMK5250L