Manitowoc Grove GMK4090 Operating Manual page 827

Rigging for crane
operation
Operating manual
GMK4090
•
Slacken the hoist rope and raise the main
boom simultaneously.
•
Raise the main boom until the boom head is
in a vertical position above the block
hook (1).
•
Detach the block hook from the retaining
ropes (2).
•
(A) – Pull the pin (3) out.
•
(B) – Raise the hook block (1) above the
hook (2) until the connecting points are
aligned.
•
Insert the pins (3) and secure them with the
retaining pins.
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12.10 Rigging work on the main boom
Rigging work
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