RIGGING / DE-RIGGING
BG 25 / 2011 /
2254_BG25_en_0000498763_V01
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7.8.4
Disassembling the Mast
WARNING!
Squashing hazard, shearing hazard and hitting hazard!
Minor movements by the backstay cylinders create major movements of
the mast sections.
During the disassembly operations, the operator must keep in view the
person working at the mast at all times.
● Mount transport supports to upper mast section.
● Undo hydraulic and electric connections between mast sections.
● Unscrew bolts from mast connecting flanges, and stow the bolts for later use.
● Lower the mast until masthead and rear mast supports rest on ground.
● Remove pin retainers from rear side of mast, and pull the pins out.
● Travel in reverse with machine and disengage upper mast section from lower mast
section.
CAUTION
Risk of corrosion!
Corrosion protect flange faces with grease if the storage or transport of
the rig is expected to take long.
