Manitowoc Grove GMK6300L Operating Manual page 303

Retracting the
derricking cylinder
head axle
G
Operating Manual GMK6300L
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.
(A) – Releasing the head pin
•
Loosen the bolt (3) and remove the disc.
(B) – Taking the load off of the head pin
•
Place the lifting device (2) underneath the
middle of the derricking cylinder.
•
Carry out the movement Raise until the
bracket (1) is resting firmly on the derricking
cylinder.
Pulling out the head pin
•
(A) – Turn the switch (1) to the pull
ä
position
•
(B) – Insert the lever into the clamp (2).
•
Pump until the head pin (3) is completely
drawn out.
•
Carry out the movement Lower until the der-
ricking cylinder is in the derricking cylinder
support.
•
(C) – Fasten the disc with the bolt (4).
•
Stow away the lever and the lifting device.
3 112 xxx en
6.4 Main boom, removing/installing
.
Driving modes
s
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