Gradall 544D (9136-4003) Service Manual - Manual (Page 306)

F ORM N O. 29702
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544C/544D B OOM M AINTENANCE
3.0 B
OOM
W
EAR
P
AD
A
DJUSTMENTS
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G ENERAL
To maximize boom service life, wear pads must be correctly adjusted at all times. The
following Service Notes are a general guide for properly adjusting boom wear pads:
Familiarize yourself with all bearing pad components (See Note! below)
Add bearing pad shims & spacers as required to shim boom within 1/16" of tight fit
Boom-sections 2, 3 and 4 should be evenly centered to outer boom-section 1
(shim packs should be equal side-to-side and top-to-bottom)
Insert spacers between the pad and the shim
Make sure no pad sits directly on the slotted surface of a shim
Bolts must not extend beyond the chomfer on the bearing pad. The length of pad
bolts depends on the number of shims used
Spread Mystilk Tetrimoly grease (Gradall P/N 1440-4595) (or equivalent) on
all bearing pads and pad sliding surfaces
Apply LOCTITE 242 (Gradall P/N 1440-3364) to all bolt threads
Bearing pad bolt torques are:
3/8" bolts 32-37 ft-lb.
112" bolts 76-86 ft-lb.
Hollow 3/8 bolts 20-25 ft-lb.
Booms should not be adjusted so tight that the lube is wiped off the sliding path
NOTE!
See pages 3.2 to 3.5 for
comprehensive guide to number
and location of bearing/wear pad
components on each boom
section.