JLG 25AM Service And Maintenance Manual page 58

SECTION 2 - SERVICE PROCEDURES
f. Check mast section for side play. If play exists use
thicker shims dividing thickness equally between
both sides of mast.
g. When mast slide pads are shimmed properly, there
should be no side to side movement of slide pad in
rail channel. Mast sections should be very snug in
channels but still be able to slide in channel by
hand.
75. Slide mast section -6/-7 to top of section -5/-6.
76. Insert threaded ends of cable assembly (attached to top
of mast section-3/-4/-5) through bracket located on bot-
tom of extended mast section -6/-7. Loosely thread two
(2) 3/8 in. nuts onto stud threads on each chain. Apply
Medium Strength Threadlocking Compound. Chains will
be adjusted later in assembly.
77. Slide mast section -6/-7 back into mast section -5/-6 until
bottom ends of masts are even. Check to make sure cable
set attached to top of section-3/-4/-5 is seating properly
in cable sheave wheels attached to top of mast section-
4/-5/-6. (Mast sections-2, -3, -4 and -5 may need to be
restrained to keep their slide pads from pushing out the bot-
tom of mast sections-1, -2, -3, -4 and -5).
78. Adjust top and bottom ends of mast sections so they are
all even with each other. At bottom of mast assembly,
thread all chain/cable adjusting nuts on threaded ends
until they are snug against the anchor plates and all slack
is removed from chains and cables. Check that chains
and cables are seated in their sheave wheels at top of
mast assembly.
79. Assemble the latch bar to mast section -6/-7, the mini
covers to the top of each mast section and the sequenc-
ing cables and hardware to the side of the mast assem-
bly.
Mast assembly should now be complete.
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