the torsion keyed shaft. Next on the right hand side, lay the other coupler half, center 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 bearings onto the torsion keyed shafts followed by the torsion
springs and the cable drums, as shown.
IMPORTANT:
THE COUPLER HALVES, CENTER 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. of torque (once set screws contact the shaft,
tighten set screws one full turn). Repeat the same process for the other coupler half.
Torsion
keyed
shaft
Center
bearing
Red cable drum
(left hand side)
Black cable drum
(right hand side)
Coupler
halves
Center
coupler
assembly
(3) 3/8” - 16 x 1-3/4” Hex head screws
and (3) 3/8” - 16 Nylon hex lock nut
Set screws
and Lock
nut
Center
bearing
Coupler
halves
Coupler halves
assembled
Set screws
and Lock nut
Key
Key
Torsion keyed shaft
Right wound, red
winding cone
(left hand side)
Left wound, black
winding cone
(right hand side)
Torsion keyed shaft
Center
bearing
Red cable drum
(left hand side)
Black cable drum
(right hand side)
Coupler
halves
Center
coupler
assembly
(3) 3/8” - 16 x 1-3/4” Hex head screws
and (3) 3/8” - 16 Nylon hex lock nut
Set screws
and Lock
nut
Center
bearing
Coupler
halves
Coupler halves
assembled
Set screws
and Lock nut
Key
Key
Torsion keyed shaft
Right wound, red
winding cone
(left hand side)
Left wound, black
winding cone
(right hand side)
Center bearing
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. Position both torsion keyed shafts so that equal
amounts of the shafts extend from each end bearing brackets.
Torsion
keyed
shaft
Center
bearing
Coupler
half
Center bearing
brackets
Left hand end
bearing bracket
Equal
spacing
Right
hand end
bearing
bracket
Equal spacing
Torsion
keyed
shaft
Right wound, red
winding cone (left
hand side)
Equal spacing
Center
bracket
bushing
Center bracket
Torsion keyed shafts
Right hand end
bearing bracket
Left hand end
bearing bracket
Torsion Spring Attachment
Tools Required: Step ladder, Ratchet Wrench, 9/16” Socket, 9/16” Wrench, Tape
measure, Safety glasses, Leather gloves
22
NOTE:
Refer to Package Contents / Parts Breakdown, to determine which Center Bracket(s)
came with your door.
NOTE:
Refer to Package Contents / Parts Breakdown, 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 bushing into the spring. Align the stationary spring cone(s) with the holes
in the center bracket bushing assembly. Secure the torsion spring(s) to the center bracket
bushing assembly with (2) 3/8” - 16 x 1-1/2” hex head bolts and (2) 3/8” - 16 nuts.
IF YOU HAVE A COUPLER ASSEMBLY:
Slide center bracket bushing 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 1-3/4” hex head
screws and the (3) 3/8” - 16 nylon hex lock nuts, as shown.
NOTE:
Ensure both torsion keyed shafts have equal amounts of the shafts extending from
each end bearing bracket.
Typical center
bracket bushing
Stationary
spring cone
Typical center bracket
Torsion
spring
Stationary
spring cone
Torsion spring
Spring
warning tags
Typical center bracket
assembly
Stationary spring cone
(2) 3/8”-16 x 1-1/2”
Hex head bolts
(2) 3/8”-16 Nuts
Torsion
spring
Torsion
spring
14
Summary of Contents for 8700
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