JLG sky trak mmv Service Manual page 179

Intermediate Boom
IMPORTANT: The wear pads installed on the top, front
(6) and bottom rear (7) intermediate boom are special
wear pads. Be sure to replace them with the correct wear
pads. The two wear pads (8) on the left side of the inter-
mediate boom are secured to the boom with the housing
support bracket (9), capscrews, lockwashers and flat
washers.
The inner boom and extend/retract cylinder must be re-
moved from the vehicle to allow removal of the rear wear
pads on the rear top and rear sides of the intermediate
boom, and the wear pads on the rear bottom of the inter-
mediate boom. Refer to Section 4.3.2, Inner Boom Re-
placement for information on removing the inner boom
and extend/retract cylinder. Coat all wear pad capscrews
®
with Loctite 242 (blue) before installation. DO NOT allow
®
Loctite to come into contact with wear pads.
6
8
Model MMV Rev. 12/04
The wear pads (10 and 11) on the front of the intermedi-
ate boom can be replaced by removing the fasteners se-
curing them to the top, sides and bottom of the boom.
When removing pads, move the boom sections as needed
to gain access for removal and installation of wear pads.
Mark or otherwise label each pad, spacer/shim and hard-
ware set for ease of installation later. Use Loctite
(blue) on all wear pad capscrews. DO NOT allow Loctite
to come into contact with wear pads.
Use shims (4) under the upper rear wear pads as required,
to maintain a maximum gap of .06" (1,7 mm) (5) at the
rear edge of the pads and maintain a total minimum gap
of .7-.13" (1,8-3,3 mm) in the vertical direction.
Use shims as required to maintain a total minimum gap of
.7-.13" (1,8-3,3 mm) between the side wear pads and
boom surfaces. Also, mount the housing support
bracket (9) along with the left side wear pads, shims and
spacers.
10
7
9
MM1751
Boom
®
11
10
242
®
10
MT1390
4.35