SETUP AND INSTALLATION 14000 OPERATOR MANUAL
4-96
Published 03-29-17, Control # 064-23 v2
Jib Removal – #134
Lower Boom and Jib
1. Lower boom until jib point is approximately 12 in (305
mm) from contacting ground.
See Figure 4-44
for the following steps.
2. Disengage jib stop pins (17, View B) by hauling in cable
on winch (14, View E). Turn handle until cable is tight
and engage pawl (15). Visually check that pins are
disengaged.
3. Remove safety pins (16, View C) from storage and
install them in jib stop pins (17, View B).
4. Lower boom onto blocking.
5. Remove weight ball or load block and wire rope from jib
point.
6. Remove block-up limit parts from jib point and store.
7. Disconnect both ends of electric cable in jib and coil onto
brackets on jib butt. Be sure to install terminating plug
(Figure 4-39
).
8. Remove and store all wind speed indicator assembly so
it is not damaged during shipping.
Store Jib Stop
See Figure 4-44 for the following procedure.
1. Store control cable:
a. Disconnect cable extension (9, View A and F) from
shackles (12). Store shackles with cable extension.
b. Disconnect cable extension (9, View A) from sheave
(10) in boom top.
c. Secure cable extension in jib butt for storage.
d. Coil excess control cable (13, View F) onto winch.
2. Readjust length of jib stop by pinning it in 5° offset
position (View A).
3. Remove storage pins (3, View C) from storage.
4. Raise jib stop assembly and pin to strut with storage pins
(3, View A, Figure 4-41
).
Lower Strut
See Figure 4-43 for the following procedure.
1. Using appropriate slings, attach hook from assist crane
to front side of sheave in jib strut (2. View D). Avoid lifting
jib butt/boom top during this step.
2. If required, raise jib point with an another crane or a fork-
lift truck to gain enough slack to allow unpinning
backstay pendants.
3. Disconnect backstay pendants (8, View A) from links (9
or 11) or from pendants (10).
4. Lay backstay pendants on ground alongside boom.
5. Lower jib point to ground.
6. Lower jib strut onto jib butt.
7. Disconnect crane from jib strut.
8. Remove and store links (9 or 11, View A) or pendants
(10).
Remove Backstay Pendants
See View C, Figure 4-43 for the following procedure.
1. Disconnect and remove backstay pendants (8, View C)
and spreader (7) from strut links (3).
2. Coil and store backstay pendants for future use.
Remove Jib Pendants
See View C and E, Figure 4-43 for the following procedure.
1. Disconnect pendants (P1, P2, P3) from jib strut (2) and
from jib top (J2).
2. Disassemble and remove all jib pendants from jib.
3. Coil and store jib pendants for future use.
DANGER
Collapsing Jib Hazard!
To prevent death or serious injury, do not stand on, inside,
or under jib during disassembly. Always stand on outside
of jib when removing connecting pins.
Support jib properly before removing pins. Block sections
at connection points.
WARNING
Crushing Injury!
Jib stop pins are spring engaged. Do not disconnect
control cables until safety pins are installed.
CAUTION
Jib Stop Damage!
Avoid jib stop damage. Do not allow jib point to contact
ground until jib stop pins are disengaged.
WARNING!
Pendant Under Tension!
Do not disconnect pendants until pendants are slack.