Manitowoc GROVE GMK 5095 - CHECKLIST: Unrigging the 22; 27 M (72; 89 Ft) Boom Extension

Boom extension
4.1 Rigging work checklists
Lattice extension operating instructions 3 112 441 en 4 - 5
GMK 4100/4100-L/5095
11.01.2008
4.1.2 CHECKLIST: Unrigging the 22 / 27 m (72 / 89 ft) boom extension
H
This checklist is no complete set of operating instructions. There are accom-
panying operating instructions which are referred to by cross-references.
Observe the warnings and safety instructions specified there.
Prerequisites:
– An auxiliary crane is available.
1. Fully retract the main boom;
à Telescoping with rigged swing-away lat-
tice
, p. 3 - 90.
2. Only applies to the derricking swing-away lattice.
– Raise the swing-away lattice completely;
à Derricking the swing-
away lattice
, p. 3 - 75.
– Lower the main boom into a horizontal position;
à p. 3 - 89.
3. Only applies to the inclinable swing-away lattice.
Lower the main boom until the lattice extension is at the correct height
to unreeve the hook block.
4. Take off the lifting limit switch weight and remove the lifting limit
switch;
à Installing / removing the lifting limit switch, p. 3 - 68.
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