Lull 1044C-54 Series II Service Manual - Manual (Page 178)

Boom and Transfer
6-36 31200079
Slide Pads without Chamfers
Fig. 6-23: Slide Pad Without Chamfers – 3 and 4-Section Boom
(Ref. Fig. 6-23) The lower slide pads, located at the rear of the middle
boom on 3-section booms and at the rear of the middle (rear) boom on
4-section booms, do not have chamfers. It will be necessary to measure
the thickness of these slide pads to ensure that they are a minimum of
9/16".
Lubrication
Load bearing pad slide areas must be greased at least monthly. Working
conditions and heavy usage may warrant greasing more often.
Fully extend and lower the boom, then apply a thin coat of EP Lithium
based grease on exposed pad slide areas. Retract the boom fully and use
the grease fittings provided at the rear of the boom section(s) for
lubricating those areas.
Slide Area Surface Finish
The areas on each boom section where the main load bearing pads slide
must be smooth and free of nicks and scratches. Rough surfaces will
greatly reduce the service life of slide pads. The general rule is: if you can
catch your fingernail on a scratch, it must be repaired.
Damaged areas that are 0.030" deep or less may be repaired by blending
the area smooth. Grind just enough material away to remove the damage,
then blend the area using fine sand paper. See Fig. 6-24 and Fig. 6-25.
Damage greater than 0.030" deep must be filled with weld and ground
smooth.
J1184
New Slide Pad
9/16" Minimum
3/4"
Worn Pad