Lull 944E-42 Service Manual - Manual (Page 94)

Boom
3.46 Model 644E-42/944E-42 Rev. 6/04
c. 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-
purpose grease. Use Loctite
®
242 (blue) on all wear pad
capscrews.
Use shims as required to maintain a maximum gap of
0.09" (2,3 mm) between the side wear pad and boom
surface.
d. Extend/Retract Cylinder
The Extend/Retract cylinder (4) must be removed from
the vehicle to allow removal of the wear pads (3) on the
front of the cylinder. Refer to Section 3.3.1, a. “Inner
Boom Removal,” Steps 1-20 for information on removing
the Extend/Retract cylinder. Coat all wear pad capscrews
with Loctite 242® (blue) before installation.
3.5.2 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
prolonged periods of inoperation, light lubrication of the
boom wear surfaces with a rust inhibitor/lubricant such as
LPS 3, 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.
MU1280
1
1
1
MS0610
2
MU4480
3
4
3