JLG 740A, Service And Maintenance Manual

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SECTION 4 - BOOM & PLATFORM
3121160 – JLG Lift – 4-25
Main Boom
1. Shim up wear pads to within 1/32 inch (.79 mm)
clearance between wear pad and adjacent surface.
2. Replace wear pads when worn within 1/16 inch (1.59
mm) and 1/8 inch (3.18 mm) - B, C, D of threaded
insert. See Location and Thickness Of Wear Pads.
3. Adjusting wear pads, removing or adding shims,
bolt length must also be changed.
a. When adding shims, longer bolts must be used
to ensure proper thread engagement in insert.
b. When shims are removed, shorter bolts must be
used so bolt does not protrude from insert and
Sheaves and wire rope must be replaced as
sets.
4.12 ROTATOR - HELAC (PRIOR TO S/N
0300130881)
Disassembly
1. Place actuator on a clean workbench.
2. Remove all hydraulic fittings.
3. Using a suitable hammer and chisel remove the por-
tion of end cap securing setscrew.
Removing Portion Of End Cap