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24
6. Repeat steps 2, 3, 4, and 5 for the LH
torsion spring.
7. Repeat step 1 to check clearance of
bottom of platform above the ground.
SHIM WASHERS
SHIMMING TORSION SPRING
FIG. 24-2
SHACKLE BRACKET
BOLT
FLAT WASHER
LOCK NUT
5. If necessary, adjust the torsion springs
to lower the platform to 4” or less
above the ground. Unbolt pin bracket
(FIG. 24-1). Then, rotate the pin
bracket away from the shackle bracket
until the free leg of the torsion spring
makes contact with the new block
welded to the platform support. Then,
using shim washers that equal the
gap “H” measured in step 14, insert
the shim washers between pin bracket
and shackle bracket (FIGS. 24-1 and
24-2). Bolt shim washers in place be-
tween pin bracket and shackle bracket
(FIG. 24-2). Tighten bolt and lock nut.
ADJUST PLATFORM
FIG. 24-1
SHACKLE
PIN
PIN BRACKET
PIN BRACKET
SHACKLE BRACKET
FLAT WASHER
BOLT
LOCK NUT
PLATFORM TORSION SPRING ADJUSTMENT - Continued
PERIODIC MAINTENANCE - Continued
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