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(3) 3/8” - 16 x 1-1/2”
hex head screws
(3) 3/8” - 16
Hex nuts
(3) 3/8”
Washers
(3) 3/8”
Washers
(3) 3/8” Lock
washers
Coupler halves
Set screws
Set screws
Coupler halves
Coupler
assembly
(3) 3/8” - 16 x 1-3/4”
hex head screws and
(3) 3/8” - 16 Hex nuts
Stationary
spring cone
Torsion
spring
(2) 3/8”-16 x 1-1/2”
Hex head bolts and
(2) 3/8”-16 Hex nuts
Torsion
spring
Center bracket
Center
bracket
Attaching Counterbalance Lift Cables
20
NOTE:
Always assemble the left hand cable and cable drum first to help maintain equal cable
tension on both sides of the door.
Starting on the left hand slide the red cable drum onto the torsion shaft / torsion keyed
shaft(s). Hook the counterbalance lift cable into the left hand cable drum and thread the
counterbalance lift cable up and around the front side of the cable drum. Slide the left hand
cable drum up against the left hand end bearing bracket.
NOTE:
If you have torsion keyed shaft(s), insert (1) key into the slot of both the cable drum
and the slot in the torsion keyed shaft, as shown.
Counterbalance lift cable should terminate at the 3 o’clock position. Tighten the set screws in
the drum to 14-15 ft-lbs of torque (once set screws contact the torsion shaft, tighten screws
an additional 1/2 turn for solid shaft and one full turn for tubular shaft). Rotate the left hand
drum and torsion shaft until counterbalance lift cable is taut. Attach locking pliers to the
torsion shaft and brace locking pliers up against jamb to keep counterbalance lift cable taut.
Repeat for right hand side using the right hand side the black cable drum.
IMPORTANT:
VERIFY THAT THERE ARE NO OBSTRUCTIONS IN THE TRAVEL PATH OF THE
DOOR SECTIONS OR COUNTERBALANCE LIFT CABLES.
IMPORTANT:
INSPECT EACH COUNTERBALANCE LIFT CABLE MAKING SURE IT IS SEATED
PROPERLY ONTO THE CABLE DRUM AND THAT BOTH COUNTERBALANCE LIFT CABLES HAVE
EQUAL TENSION.
CHECK COUNTERBALANCE LIFT CABLES FOR EQUAL TENSION:
1. Attach locking pliers to track above top roller.
2. Grasp cable at approximate mid-door height location.
3. Draw cable toward you about 1/2” to 1” and release, noting the response of the cable.
4. Repeat above steps for other cable.
5. Adjust cable tension as needed until right and left cables both respond the same.
Once the counterbalance cables are set and if applicable tighten the coupler assembly
together by tightening the (3) 3/8” - 16 nylon hex lock nuts to secure the coupler halves
together.
Torsion
shaft
Left hand end
bearing bracket
Counterbalance
lift cable hooked
in cable drum
Red cable drum
(left hand side)
Locking
pliers
Tighten set
screws to
14-15 ft. lbs.
of torque
Torsion
shaft
Jamb
Counterbalance
lift cable
Torsion
shaft
Counterbalance
lift cable taut
NOTE:
Repeat the same process for the
right hand side using the right hand side
the black cable drum.
Left hand end
bearing bracket
Torsion
keyed
shaft
Torsion spring
Key
Red cable drum
(left hand side)
Set collar (if applicable)
Counterbalance lift cable
Tighten set screws to
14-15 ft. lbs. of torque
Set Collars
21
NOTE:
If your door did not come with set collars, then skip this step.
Slide each of the set collars up against the inside surface of the end bearing brackets, with
the set screw facing directly away from the header. Tighten the set screw in each of the set
collars to the torsion shaft to 14-15 ft. lbs. of torque (once set screw contacts the shaft,
tighten set screw one full turn).
IMPORTANT:
PRIOR TO TIGHTENING THE SET SCREWS IN THE SET COLLARS, AVOID PLAC-
ING THE SET SCREWS IN THE KEYWAYS OF TORSION KEYED SHAFT(S).
Set
collar
End bearing
bracket
Torsion
keyed shaft
End
bearing
bracket
Set collar
Set
screw
Counterbalance
lift cable
Right
hand
cable
drum
Chalking Torsion Spring(s)
22
NOTE:
If your springs have stenciling, then skip this step.
Draw a chalk line horizontally along the center of the torsion spring coil(s). As the torsion
spring is wound, the chalk line will create a spiral. This spiral can be used to count and
determine the number of turns that are applied on the torsion spring.
Draw horizontal chalk line prior to
winding
Spirals created after winding
Torsion spring
coils
Securing Door for Spring Winding
23
With the door in the fully closed position, place locking pliers onto both vertical tracks just
above the third track roller. This is to prevent the garage door from rising while winding
springs.
NOTE:
Check the following before attempting to wind torsion spring(s):
a. Counterbalance lift cables are secured at bottom corner brackets.
b. Counterbalance lift cables are routed unobstructed to cable drums.
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