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Torsion
spring
(2) 3/8"-16
Nuts
Typical center
bracket
Stationary spring cone
(3) 3/8" - 16 x 1-3/4"
hex head screws and
(3) 3/8" - 16 Hex nuts
Stationary
spring cone
Center bracket
Torsion
spring
(2) 3/8"-16 x 1-1/2" Hex head
bolts and (2) 3/8"-16 Hex nuts
18
Attaching Counterbalance Lift Cables
Starting on the left hand side, thread the counterbalance lift cable up and around the front
side of the left hand cable drum.
IMPORTANT: VERIFY THAT THERE ARE NO OBSTRUCTIONS IN THE TRAVEL PATH OF THE
DOOR SECTIONS OR COUNTERBALANCE LIFT CABLES.
NOTE: Always assemble the left hand cable and cable drum first to help maintain equal cable
tension on both sides of the door.
Hook the counterbalance lift cable into the left hand cable drum. Slide the left hand cable
drum up against the left hand end bearing bracket. Counterbalance lift cable should termi-
nate at the 3 o'clock position.
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.
Rotate the left hand drum and torsion shaft until counterbalance lift cable is taut. Now attach
locking pliers to the torsion shaft and brace locking pliers up against jamb to keep counter-
balance lift cable taut. 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). Repeat for right hand side.
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 nuts to secure the coupler halves together.
Typicall left hand
Typicall left hand
cable drum
end bearing bracket
Counterbalance
lift cable
Stationary
spring cone
Torsion
spring
(2) 3/8"-16 x 1-1/2"
Hex head bolts
Torsion
spring
Center
bracket
Coupler
assembly
Coupler halves
Torsion shaft /
Torsion keyed shaft
Counterbalance lift cable hooked in cable
drum
Locking pliers
Counterbalance lift cable
hooked in cable drum
Typicall left hand
cable drum
Set screws
19
Chalking Torsion Spring(s)
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.
Spirals created after winding
20
Securing Door for Spring Winding
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.
c. Counterbalance lift cables are correctly installed and wound onto cable lift drums.
d. Counterbalance lift cables are taut and have equal tension on both sides.
e. Cable lift drums are against end bearing brackets and set screws are tight.
f. Torsion spring or springs are installed correctly.
g. Review the label attached to the spring warning tag, to determine number of spring turns
required.
NOTE: Door MUST be closed and locked when winding or making any adjustments to the
torsion spring(s).
WARNING
FAILURE TO ENSURE DOOR IS IN A CLOSED POSITION AND TO PLACE
LOCKING PLIERS ONTO VERTICAL TRACK CAN ALLOW DOOR TO RISE
AND CAUSE SEVERE OR FATAL INJURY.
15
Jamb
Typicall left
hand end
bearing bracket
Key
Torsion shaft /
Torsion keyed shaft(s)
Draw horizontal chalk line prior to
winding
Torsion spring
coils
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