JLG 740A, Service And Maintenance Manual

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SECTION 4 - BOOM & PLATFORM
4-24 – JLG Lift – 3121160
4.10 PLATFORM
Platform Sections Replacement
The platform is made up of five sections: floor, right side,
left side, back (console box mounting.) and gate. The sec-
tions are secured with huck magna grip fastener and col-
lars. Replace damaged platform sections as follows:
1. Support the huck collar with a sledge hammer or
other suitable support.
2. Using a hammer and chisel, remove the collar from
the fastener as shown in the diagram below.
3. When installing new section of platform replace fas-
teners with 1/4 x 20 NC x 2 1/4" grade 5 bolts, flat-
washers and locknuts.
4. When installing a new gate to platform, replace riv-
ets with 1/4 x 20 NC x 2 “grade 5 bolts, flatwashers
and locknuts.
4.11 WEAR PADS
Tower Boom
1. Shim up wear pads until 1/32 inch clearance to adja-
cent surface.
2. Replace wear pads when worn to within 1/16 inch
(1.59 mm) of threaded insert.
NOTE: Wear pads are made of polyethylene; these pads are
intended to slide on polyurethane painted surfaces.
3. When 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
come into contact with boom surface.
Figure 4-11. Platform Section Replacement
Figure 4-12. Location And Thickness Of Wear Pads
WEAR PADS
PAD
NUMBER
THICKNESS
OF NEW PAD
REPLACE WHEN
WORN TO
A 5/8 9/16
B 3/4 5/8