Service Manual Owner's manual

SECTION 4 - BOOM & PLATFORM
4-8 – JLG Lift – 3121139
8. Carefully remove the telescope cylinder and sheave
assembly. Place telescope cylinder on a suitable
trestle.
a. Remove hardware from the wear pads; remove
wear pads from cylinder.
b. Remove hardware from the wire rope guard;
remove guard from cylinder.
c. Remove hardware from the sheave pin; remove
pin and sheave from cylinder.
9. Remove hardware which secures the wear pads to
the front of base boom section; remove wear pads
from the top, sides and bottom of the base boom
section.
10. Using an overhead crane or suitable lifting device,
remove mid and fly boom sections from base sec-
tion. Note: When removing mid and fly boom sec-
tions from base boom section, retract wire rope
must be dragged along with boom sections.
11. Remove hardware which secures the wear pads to
the rear end of mid boom section; remove the wear
pads from the top, sides and bottom of the mid
boom section.
12. Remove hardware which secures the sheave guards
and sheave assemblies to mid boom section,
remove sheave assemblies from mid boom section.
13. Remove hardware which secures the wear pads to
the front of mid boom section; remove wear pads
from the top, sides and bottom of the mid boom sec-
tion.
14. Using an overhead crane or suitable lifting device,
remove fly boom section from mid section. Note:
When removing fly boom section from mid boom
section, retract wire rope must be dragged along
with fly boom section.
15. Remove hardware which secures the wear pads to
the rear end of fly boom section; remove wear pads
from the top, sides and bottom of the fly boom sec-
tion.
16. When removing wire rope from fly boom section,
push the cable into fly boom. Route wire rope back
through holes in the side of the fly boom section.
Figure 4-6. Disassembly of Sheave Assembly
Figure 4-7. Disassembly Wire Rope Routing Procedure