Spiral
®
SST and STT Prewire Installation Manual
Spiral
®
SST and STT Prewire Installation Manual
■
1072124-0
■
Rev 03
■
01/22
18
How to install the secondary drive belt
1
Make sure the secondary drive belt is
kept taut throughout these steps.
▪
The belt is preinstalled around the
pulley
a
.
▪
The
door panel end bracket
b
is connected at the
precise height to keep the door panel level.
▪
The belt is kept taut to the pulley and end bracket during
crating by
two cable ties
c
.
▪
If the belt becomes loose
before it is secured to the
baseplate, it can skip a tooth in the pulley.
This will cause
the door panel to run crooked and damage the door.
Keep downward pressure
on the secondary drive belt
until the baseplate pulley assembly
d
is installed and the
belt has been properly tensioned.
2
Pull
the secondary drive belt and baseplate
pulley assembly out of the console.
Lower
them down the side column.
3
Grab
the belt below the cable ties and pull
gently downward to keep the belt tight.
Cut
the two cable ties to release the belt.
4
Remove
the top nut on the front baseplate
mounting post.
Keep
the nut.
Loosen
the top nut on the rear mounting post.
DO NOT loosen
the bottom nuts.
b
a
d
c
Cutting
pliers
KEEP
REUSE
17mm
5
Set the height
of the top nut on the rear baseplate mounting post
a
.
1: Slide
the rear flange of the baseplate pulley assembly
b
under the top nut
until it touches the post.
2: Press down
on the front of the pulley assembly as hard as you can
c
.
▪
The top nut is at the correct height when
three (3) threads
of the front mounting post clear the front flange.
3: Adjust
the height of the nut as needed to reach the correct height.
6
Set the tension
of the belt.
1: Replace
the top nut on the front mounting post.
Tighten
the nut to increase the tension on the belt.
2: Grab
the belt as close as possible to the midpoint with one hand.
Press
the front and rear legs of the belt together between your fingers and thumb.
▪
The tension is correct when it requires
considerable effort to bring the legs together.
3: Adjust
the height of the top nut as needed to reach the correct tension.
17mm
a
b
c
17mm
KEEP
REUSE