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Coupler assembly
Set screws
(3) 3/8" - 16 x 1-1/2"
hex head screws
Facing the inside of the door, lay the (2) torsion keyed shafts on the floor. One torsion keyed
shaft on the left hand side and the other torsion keyed shaft on the right hand side. Starting
on the left hand side, lay one of the coupler halves, the center bracket bearing, torsion spring
with the red winding cone and the red cable drum at the left end of the torsion keyed shaft.
Next on the right hand side, lay the other coupler half, center bracket bearing, the torsion
spring with the black winding cone, and the black cable drum at the right end of the torsion
keyed shaft. Slide the coupler halves, center bracket bearings onto the torsion keyed shafts
followed by the torsion springs and the cable drums, as shown.
IMPORTANT: THE COUPLER HALVES, CENTER BRACKET BEARINGS, TORSION SPRINGS,
CABLE DRUMS MUST BE POSITIONED, AS SHOWN.
Slide the flat edge of the couple half flush with the side edge of the torsion keyed shaft. Insert
(1) key into the slot of both the coupler half and the slot in the torsion keyed shaft. Tighten
the (2) set screws and the locking nut to secure the coupler half to the torsion keyed shaft,
as shown.
NOTE: Tighten the set screws to 14-15 ft-lbs (Once set screws contact the shaft, tighten
screws an additional 1/2 turn).
Repeat the same process for the other coupler half.
NOTE: Layout
counterbalance parts in
proper orientation, then
install onto torsion
shaft, as shown.
Coupler
halves
Center
bracket
bearing
Left hand cable
drum, red
Right wound, red
winding cone
(left hand side)
Torsion keyed shaft
NOTE: Layout
counterbalance parts in
proper orientation, then
install onto torsion
shaft, as shown.
Center bracket
bearings
Coupler
halves
Center bracket
bearing
Red cable drum
(left hand side)
Center bracket
bearing
Right wound, red
winding cone
(left hand side)
Torsion keyed shaft
With assistance and starting on the left hand side of door, pick up the left hand torsion spring
assembly and slide one end of the torsion keyed shaft through the end bearing bracket. Lay
the other side of the torsion keyed shaft into the center bracket. Repeat the same process for
the right hand torsion spring assembly.
(3) 3/8"
Washers
Set screws
(3) 3/8" - 16
Hex nuts
(3) 3/8" Lock
washers
Coupler halves
(3) 3/8"
Washers
Right hand cable
drum, black
Torsion
keyed
shaft
Left wound, black
winding cone
Center
(right hand side)
bracket
bearing
Key
Set screws
and Lock nut
Key
Coupler halves
assembled
Black cable drum
(right hand side)
Torsion keyed shaft
Left wound, black
winding cone
(right hand side)
Key
Set screws
and Lock nut
Key
Coupler halves
assembled
Right wound, red
winding cone (left
hand side)
Left hand end
bearing bracket
NOTE: Position both torsion keyed shafts so that equal amounts of the shafts extend from
each end bearing brackets.
Left hand end
bearing bracket
Torsion keyed shafts
17
Attaching Springs to Center Bracket
NOTE: Refer to Package Contents / Breakdown of Parts, to determine which Center
Bracket(s) came with your door.
NOTE: Refer to Package Contents / Breakdown of Parts, to determine if your door came with
a coupler assembly.
IMPORTANT: THE SPRING WARNING TAG(S) SUPPLIED MUST BE SECURELY ATTACHED
TO THE STATIONARY SPRING CONE(S) IN PLAIN VIEW. SHOULD A REPLACEMENT SPRING
WARNING TAG BE REQUIRED, CONTACT WAYNE DALTON FOR FREE REPLACEMENTS.
NOTE: Measure the diameter of your springs. If your spring diameter is 3-3/4", the springs
do not share center brackets. If your spring diameter is either 2" or 2-5/8", then two springs
will share the same center bracket, unless a coupler assembly is provided.
IF YOU DON'T HAVE A COUPLER ASSEMBLY: Slide center bracket bearing into the spring.
Align the stationary spring cone(s) with the holes in the center bracket. Secure the torsion
spring(s) to the center bracket with (2) 3/8" - 16 x 1-1/2" hex head bolts and (2) 3/8" - 16
nuts.
IMPORTANT: NEVER USE MORE THAN ONE BEARING WHEN ATTACHING TWO SPRINGS TO
ONE CENTER BRACKET.
IF YOU HAVE A COUPLER ASSEMBLY: Slide center bracket bearing into the spring. Align
the stationary spring cone with the holes in the center bracket. Secure the torsion spring to
the center bracket with (2) 3/8" - 16 x 1-1/2" hex head bolts and (2) 3/8" - 16 nuts. Repeat
the same process for the other center bearing bracket.
At the middle of the two center bearing brackets, re-assemble the coupler assembly by
loosely fastening the coupler halves together using the (3) 3/8" - 16 x 1-1/2" hex head
screws, (6) 3/8" washers, (3) 3/8" lock washers and the (3) 3/8" - 16 hex nuts, previously
removed.
NOTE: Ensure both torsion keyed shafts have equal amounts of the shafts extending from
each end bearing bracket.
Typical center
bracket
Typical center
bracket bearing
Stationary
spring cone
Torsion spring
14
Center bearing
brackets
Center bracket
bearing
Torsion
keyed
shaft
Center
Right hand end
bracket
bearing bracket
bearing
Center bracket
Stationary
spring cone
Torsion spring
Spring
warning tags
Coupler
half
Torsion
keyed
shaft
Right
hand end
bearing
bracket
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