JLG 740AJ, Service And Maintenance Manual

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SECTION 4 - BOO M & PLATFOR M
3121160 4-27
4.11 PLATFORM
Platform Sections Replacement
The platform is made up of five sections: floor, right side, left
side, back (console box mounting) and gate. The sections are
secured with huck magna grip fastener and collars. 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 fasten-
ers with 1/4 x 20 NC x 2 1/4" grade 5 bolts, flatwashers
and locknuts.
4. When installing a new gate to platform, replace rivets
with 1/4 x 20 NC x 2“ grade 5 bolts, flatwashers and lock-
nuts.
4.12 WEAR PADS
Tower Boom
1. Shim up wear pads until 1/32 in. (0.79 mm) clearance to
adjacent surface.
2. Replace wear pads when worn to within 1/16 in.
(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