JLG sky trak mmv Service Manual page 180

Boom
Outer Boom
All outer boom pads (1) are mounted on the front of the
outer boom. Remove the top wear pads before removing
the bottom wear pads. Lower the gooseneck to the
ground until the intermediate boom raises up, providing
clearance for removing the bottom pads. Fill the grease
pockets (2) of the top rear boom wear pads with multi-pur-
pose grease. Use Loctite
capscrews. DO NOT allow Loctite
wear pads.
1
4.36
®
242 (blue) on all wear pad
®
to come into contact with
1
1
2
Use shims as required to achieve a total minimum gap of
.7-.13" (1,8-3,3 mm) between top and side wear pads and
boom surfaces. Also, mount the hose track bracket (3)
along with the left side wear pads, shims and spacers.
1
Extend/Retract Cylinder
The extend/retract cylinder must be removed from the ve-
hicle to allow removal of the wear pads on the front of the
cylinder. Refer to Section 4.3.2, a. Inner Boom Removal ,
1
Steps 1-24 for information on removing the extend/retract
cylinder. Coat all wear pad capscrews with Loctite 242
(blue) before installation.
c. Boom Wear Pad Lubrication
The boom has been factory lubricated for proper wear pad
break-in and will normally not require further lubrication.
However, after replacing any wear pad(s), or after pro-
longed periods of inoperation, light lubrication of the boom
wear surfaces with a rust inhibitor/lubricant such as LPS 3,
MT1390
or equivalent, is recommended to keep the boom wear
surfaces lubricated properly. Light lubrication of the boom
wear surfaces is also recommended in salt air climates,
and when the vehicle is stored, to help prevent rusting.
MS0610
3
Model MMV Rev. 12/04
MM4110
®