SETUP AND INSTALLATION 999 LUFFING JIB OPERATOR MANUAL
4-54
Published 05-15-17, Control # 043-09
11. Disconnect fixed jib backstay pendants:
a. Using an assist crane, support fixed jib strut so it
cannot fall.
b. Unpin backstay pendants (P4, Figure 4-25
, View B)
from links and lay pendants on ground.
c. Lower strut onto fixed jib butt and disconnect assist
crane.
12. Remove fixed jib at this time or after boom and luffing jib
have been lowered to ground level.
Removing Fixed Jib
Removing the fixed jib is opposite of installing the jib.
The jib butt, jib strut, and jib stops can be shipped as an
assembled unit.
WARNING
Collapsing Jib Hazard!
Improper disassembly of jib sections can cause jib to
collapse onto personnel removing connecting pins.
Death or serious injury can result if precautions listed
below are not taken:
• Lower boom so luffing jib and fixed jib points are
supported on ground.
• Slacken rigging — do not attempt to remove
connecting pins while jib is supported by rigging.
• Block below both ends of jib sections before
removing connecting pins.
• Stand on outside of jib sections when removing
connecting pins. Never work under or inside jib
sections. Use care not to damage lacings and chords
as pins are knocked out.
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