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20
PLATFORM CHAIN ADJUSTMENT - Continued
4. To adjust with the u-bolt, do the following. If
necessary, raise platform enough to gain ac-
cess to the adjusting nuts on both u-bolts. Next,
loosen the jam nuts on both u-bolts (FIG. 20-
1B). Alternately and equally tighten the lock nuts
on each u-bolt (FIGS. 20-1B and 20-1C).
Then, measure distance “H2” at the tip of the
platform (FIG. 20-1A). When distance “H2” is
equal to distance “H1” (+0” / -1”), or u-bolt is at
maximum adjustment (FIG. 20-1C), securely
tighten jam nuts on both u-bolts.
FIG. 20-1A
”H1”
GROUND
”H2”
Personal injury and damaged equipment could result if chains separate from
platform under load. Ensure each leg of u-bolts extends minimum of 1/8” from
lock nut. When adjustment is complete, ensure jam nuts are tightened securely.
1/8”
(MIN)
U-BOLT AT MINIMUM LIMIT
(RH SIDE SHOWN)
FIG. 20-1B
JAM NUT
(2 PLACES)
LOCK NUT
(2 PLACES)
PLATFORM
U-BOLT
U-BOLT ADJUSTED TO MAXIMUM
LIMIT (RH SIDE SHOWN)
FIG. 20-1C
PLATFORM
JAM NUT
(2 PLACES)
LOCK NUT
(2 PLACES)
WARNING
!
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