Lull 944E-42 Service Manual - Manual (Page 92)

Boom
3.44 Model 644E-42/944E-42 Rev. 6/04
3.5 BOOM WEAR PADS
The wear pads (1) on this vehicle, are for the most part,
flat rectangular wear pads with metal inserts (2). The
bottom rear wear pads (3), of the intermediate boom, are
“U” shaped and have a L shaped retainer (4) to keep
them in place.
A total of 30 wear pads are installed on the outer,
intermediate and inner booms. Eight wear pads are
attached to the inner boom, 14 to the intermediate boom
(including two at the lower rear), and eight to the outer
boom. Two additional wear pads (5) are attached to the
front of the Extend/Retract cylinder (6).
Note: All shims are used to maintain a maximum total
gap of 0.09" (2,3 mm), between the wear pad and the
boom.
3.5.1 Boom Wear Pad Replacement
When replacing a wear pad on the boom, replace both
wear pads on that side of the boom; e.g.: replace top front
left and top front right wear pads at the same time.
Usually, shimming will remain the same when installing
new wear pads. All wear pads are secured to the boom
using different capscrews and washers. When installing
new wear pads, apply Loctite
®
#242 (blue) to all wear pad
mounting capscrews and torque to 33 - 38 lb-ft
(46 - 52 Nm).
a. Inner Boom
All inner boom wear pads (7) are mounted on the rear
outside of the inner boom.
MU0420
1
1
1
2
3
4
MU4480
5
6
5
MU4070
7
7
7
7