Part N
umber
6410T0006
Version 4/23/2010
13
A.
Starting on one side, install a counter balance spring into one side
frame by hooking the spring tang in the side frame bottom plate
bracket and standing it upright inside the side frame.
B.
Each spring has a tag indicating the door serial number, spring
size, number of pre-wraps on cable drums, and spring pre-stretch
distance. Using a tape measure, determine and mark the inside of
the side frame to indicate the pre-stretch point of the spring.
C.
Clamp the intermediate pulley bracket in an upright position with
center hole placed at the pre-stretch point (
Figure 8
).
D.
Unroll cables and lay out to full length. Ensure that they are not
twisted and there are no kinks in the cable itself. Starting on one
side (left-hand or right-hand), attach the looped end of the cable
to the cable drum at the attachment point (
Figure 7
).
E.
Starting at the cable drum feed the other end of cable from front
to back going underneath the cable drum and around. Place the
stated number of pre-wraps on the cable drum as indicated on the
spring tag. Ensure the cable is run in the cable grooves, in order,
with none of the grooves being skipped or crossed (
Figure 9
).
NOTE: WITH 0-WRAPS THE CABLE DOES NOT HANG
STRAIGHT DOWN FROM THE CABLE DRUM. IT STILL
HAS ¼ TO ½ OF A WRAP ON THE CABLE DRUM. IT
SHOULD NEVER FROM THE CABLE DRUM.
FIGURE 9
FIGURE 8
Summary of Contents for RAPID-ROLL 570
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