Specifications

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20
NOTE: If there is little or no gap, a shim is
not required. Skip to step 7.
4. Fabricate 2 shims from A-36 steel as
shown in FIG 20-1. The thickness must
be equal to the “H” measurement taken
in the previous step and an added 1/16”.
For example, if you measured 1/8” for
“H”, add another 1/16” to make the
shim 3/16” thick.
5. Weld 1 shim (FIG. 20-2) to support
block on RH side of platform as shown in
FIG. 20-2. Repeat for support block on
LH side of platform.
SHIM (THICKNESS “H”)
MADE FROM STEEL FLAT
FIG. 20-1
2-1/2”
3/4”
WELDING SHIM ON
SUPPORT BLOCK
FIG. 20-2
SHIM
3/16”
TORSION
SPRING
(REF)
SUPPORT
BLOCK
CAUTION
Heat from welding near the plat-
form torsion springs can weaken
the springs. Cover the torsion
springs with a wet cloth before
welding.
PERIODIC MAINTENANCE
PLATFORM TORSION SPRING ADJUSTMENT - Continued