| Typicall center |
Mounting surface | bracket |
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Vertical line |
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Horizontal line |
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Typicall center |
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of end bearing |
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bracket |
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If your door did not come with a center coupler assembly and uses Tor- sion Springs less than
NOTE: On some single spring doors, the single spring can be longer than half the opening width. If your spring is longer, then the center bracket must be mounted off center for the spring to fit properly. Measure spring length to determine appropriate center bracket location.
Mounting | Center bracket | Vertical | Mounting surface | |
surface | bushing assembly | line |
| (3” Minimum) |
(3” Minimum) | (2) 5/16” x |
| (2) 5/16” x | |
Vertical | Lag screws |
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| Lag screws |
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line |
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Horizontal |
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line |
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| Center |
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| bearing |
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| Horizontal | bracket | |
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| line |
| assembly |
| (1) 5/16” X 2” or (1) 5/16” x |
If your door did come with a center coupler assembly and uses
NOTE: If your door came with a center coupler assembly or if it utilizes
NOTE: If your door has (4) springs, split the distance between the center of the door and the end bracket on each side to locate the intermediate center brackets.
Attach each of the center bracket(s) to the mounting surface, using (2) 5/16” x
IMPORTANT: Use a 5/16” x
Mounting surface | Center | † | Vertical line | ||
(17” Minimum) | of |
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| door |
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Vertical |
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line |
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(2) 5/16” x |
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Lag screws |
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Horizontal |
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line |
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(1) 5/16” X 2” or (1) 5/16” | brackets spaced 6” to 7” | ||||
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| lag screw |
| the door. |
21 | Torsion Spring Assembly | |
Tools Required: 3/8” Wrench, 9/16” Wrench, Step Ladder | ||
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NOTE: Refer to the Package Contents and or Parts Breakdown to determine if your door came with a coupler assembly.
IMPORTANT: Right and left hand is always determined from inside the building looking out.
IMPORTANT: Identify the torsion springs provided as either right hand wound (red winding cone), which goes on the LEFT HAND SIDE or left hand wound (black winding cone), which goes on the RIGHT HAND SIDE.
IMPORTANT: On single spring applications, only a left hand wound (black winding cone), which goes on the RIGHT HAND SIDE is required.
NOTE: The set screws used on all torsion winding cones and cable drums are now colored red. DO NOT identify right and left hand by the set screw color.
If you don’t have a Coupler Assembly:
Facing the inside of the door, lay the torsion shaft / torsion keyed shaft on the floor. Lay the torsion spring with the black winding cone and the black cable drum at the right end of the torsion shaft / torsion keyed shaft. Lay the torsion spring with the red winding cone and the red cable drum at the left end of the torsion shaft / torsion keyed shaft.
Slide the center bracket bearing / center bracket bushing onto the torsion shaft / torsion keyed shaft followed by the torsion springs and cable drums.
IMPORTANT: The center bracket bearing / center bracket bushing, torsion springs, and cable drums must be positioned, as shown.
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| Right hand | |
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| cable drum, | |
Torsion shaft |
| black | ||
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| Left hand wound, | ||
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| black winding cone | ||
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| (right hand side) | |
| Center bearing | IMPORTANT: ON SINGLE | ||
Left hand cable | SPRING APPLICATIONS, | |||
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drum, red |
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| ONLY A LEFT HAND WOUND | |
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| (BLACK WINDING CONE), | |
Right hand |
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| WHICH GOES ON THE RIGHT | |
wound, red |
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| HAND SIDE IS REQUIRED. | |
winding cone |
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(left hand side) |
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With assistance, pick up the torsion spring assembly and slide one end of the torsion shaft / torsion keyed shaft through one end bearing bracket. Lay the middle of the torsion shaft / torsion keyed shaft into the center bracket. Slide the other end of the torsion shaft / torsion keyed shaft into the other end bearing bracket. Position the torsion shaft / torsion keyed shaft so that equal amounts of the shaft extend from each end bearing bracket.
| Equal spacing |
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Left hand end | Center | Right hand end |
bearing bracket | bracket | bearing bracket |
| bushing |
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Torsion shaft | Center bracket |
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If you have a Coupler Assembly:
Disassemble the coupler assembly by removing the (3) 3/8” - 16 x
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
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