Group PS, Periodic Service
PS-2-4 • Planned Maintenance SM 765, Nov ’06
Forks
Inspect the load forks for cracks, breaks, bending and
wear. The fork top surfaces should be level and even with
each other. The height difference between both fork tips
should be no more than 6 mm (0.25 in.)
N
TE
Your Clark dealer has special tools for mea-
suring fork wear.
WARNING
!
If the fork blade at the heel is worn down by
more than l0%, the load capacity is reduced
and the fork must be replaced. DO NOT
attempt to fill with weld. See Group 34 for
inspection procedure.
Check the amount of wear at the heel of the fork.
CAUTION
!
If the forks are obviously bent or damaged,
have them inspected by a trained mainte-
nance person before operating the truck.
Inspect the forks for twists and bends. To check, put a 2 x
4 x 24 in. long block on the blade of the fork with the 4 in.
surface against the blade. Put a 24 in. carpenter’s square
on the top of the block and against the shank. Check the
fork 18 in. above the blade to be sure it is not bent more
than 14.5 mm (0.6 in.) at Y.
Inspect the fork latches. Be sure they are not damaged or
broken, operate freely and lock correctly. Check the fork
stop pins (or bolt and washer) for secure condition.
Wheels and Tires
Check the condition of the drive and steer wheels and
tires. Remove objects embedded in the tread. Inspect the
tires for excessive wear, break, “chunking out,” and bond
failure between the tire and rim.
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