Cascade Viewmast II 30C Triple Installation Instructions Manual page 8

4. Hoist Chain Inspection and Tension
Both pairs of hoist charns have been factory-lubricated using
heat and pressure to force the lubricant thoroughly into the
chain links, Avoid removal or contaminatron of this factory
applied lubricant, Do not wash, sand blast, etch, steam clean,
or paint the chains on initial mast installation.
Hoist chains must be adjusted with equal tension to ensure
proper load distribution and mast operation. To determine
equal tension, extend the unloaded mast to put the chains
under tension. Press the center of a strand of chain with your
thumb. Then press at the same place on the other chain of the
pair. Each chain in a pair should have equal "give". Do this
with all hoist chains. If they do not have equal tension perform
the Hoist or Carriaqe chain adjustment.
5. Hoist Chain Adjustment
The hoist chain should be adjusted so that when the unloaded
mast is fully lowered, all upright channels are even with each
other at the bottom within l/8 inch.
a To adjust, raise the mast until the hoist chain adjusting nut
is just above the outer upright.
See Figure 11 or 12.
Remove the cotter keys from the chain anchors and adjust
one chain to achieve the equal dimension. Adjust the other
hoist chain until equal tension is achieved.
b. Insert new cotter keys on the chain anchors. See Figure 13.
C. Lower the mast and check your adjustment. All channels
should beeven with each other at the bottom within l/8 inch.
INNER
UPRIGHT
INTERMEDIATE
HOIST CHAIN
ADJUSTING NUTS
EQUAL
+ 118 inch
EQUAL
INNER
UPRlGHT YL
HOIST CHAIN
ADJUSTING ,,,,,TS \
INNER
INTERMEDIATE
UPRIGHT
HOIST CHAIN
ADJUSTING NUTS
EQUAL
+- l/8 inch
w
EQUAL
f I/8 inch
EQUAL
f l/8 inch
IATE
Figure 12. Quad Lift Adjusting Nuts
HOIST CHAIN
ADJUSTING NUT
COTTER KEY
CHAIN
ANCHOR
HOIST CHAIN
Figure 11. Triplo Lift Adjusting Nuts
8
Figure 13. Cottor Key Installation