JLG 660SJ Service Manual - Manual (Page 180)

SECTION 4 - BOOM & PLATFORM
4-8 – JLG Lift – 3121202
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.
Figure 4-10. Boom Assembly Cutaway - Sheet 3 of 3
Figure 4-11. Disassembly of Sheave Assembly