IF YOUR DOOR DID NOT COME WITH A CENTER COUPLER ASSEMBLY OR TORSION
SPRINGS LESS THAN 3-3/4” ID:
Mark a vertical pencil line on the mounting surface above
the door, at the center. Align the edge of the center bracket with the vertical pencil line and
the center of the center bracket with the horizontal pencil line; this is to ensure the torsion
shaft is level between the center and end bearing brackets.
NOTE:
On some single spring doors, the 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 adding room for spring growth during winding, to determine
appropriate center bracket location.
Center bracket
bushing assembly
5/16” x 1-5/8” Hex head lag screw (RED HEAD) or
5/16” x 2-1/2” Hex head lag screw (RED HEAD)
Vertical
line
Mounting
surface
(3” Minimum)
Horizontal
line
Vertical
line
Mounting surface
(3” Minimum)
Horizontal
line
Center
bearing
bracket
assembly
5/16” x 1-5/8” Hex head
lag screws (RED HEAD)
5/16” x 1-5/8” Hex head
lag screws (RED HEAD)
IF YOUR DOOR DID COME WITH A CENTER COUPLER ASSEMBLY OR 3-3/4” ID TOR-
SION SPRINGS:
Mark a vertical pencil line on the mounting surface above the door, at the
center. Split the difference up and position the (2) center bearing brackets apart from each
other. Mark two vertical pencil lines, one for each center bearing bracket onto the mounting
surface above the door.
NOTE:
If your door came with a center coupler assembly or if it utilizes 3-3/4” springs, the
springs will not share a center bracket.
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 5/16” RED HEAD lag
screws, as shown.
IMPORTANT:
USE A 5/16” X 2-1/2” RED HEAD LAG SCREW INSTEAD OF THE 5/16” X
1-5/8” RED HEAD LAG SCREW IF MOUNTING SURFACE IS COVERED BY DRYWALL. THE LAG
SCREW MUST BE ATTACHED THROUGH THE BOTTOM HOLE OF THE CENTER BRACKET(S).
IF MOUNTING SURFACE IS A 2” X 6” BOARD INSTALLED ON TOP OF MASONRY, DRILL A
CLEARANCE HOLE IN MASONRY FOR THE 5/16” X 2-1/2” RED HEAD LAG SCREWS.
5/16” x 1-5/8” Hex head
lag screws (RED HEAD)
Vertical
line
Mounting surface
(17” Minimum)
Horizontal
line
Vertical line
† (2) Center bearing
brackets spaced 6” to
7” apart from the
center of the door.
Center
of
door
†12”
5/16” x 1-5/8” Hex head lag screw (RED HEAD) or
5/16” x 2-1/2” Hex head lag screw (RED HEAD)
Torsion Spring Assembly
16
NOTE:
Refer to the Package Contents and or Breakdown of Parts 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 WOUND (RED
WINDING CONE), WHICH GOES ON THE LEFT HAND SIDE OR LEFT WOUND (BLACK WINDING
CONE), WHICH GOES ON THE RIGHT HAND SIDE.
IMPORTANT:
ON SINGLE SPRING APPLICATIONS, ONLY A LEFT WOUND (BLACK WINDING
CONE), IS REQUIRED.
NOTE:
The set screws used on all winding cones and cable drums are 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 onto the torsion shaft / torsion
keyed shaft followed by the torsion springs and cable drums.
IMPORTANT:
THE CENTER BRACKET BEARING, TORSION SPRINGS, AND CABLE DRUMS
MUST BE POSITIONED, AS SHOWN.
Torsion shaft /
Torsion keyed shaft
Right wound, red
winding cone
(left hand side)
Left wound, black
winding cone
(right hand side)
Right hand
cable drum,
black
Left hand cable
drum, red
IMPORTANT:
ON SINGLE
SPRING APPLICATIONS,
ONLY A LEFT WOUND
(BLACK WINDING CONE),
IS REQUIRED.
NOTE:
Layout
counterbalance parts in
proper orientation, then
install onto torsion
shaft, as shown.
Center
bracket
bearing
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.
Left hand end
bearing bracket
Right hand end
bearing bracket
Center
bracket
bearing
Center bracket
Torsion shaft /
Torsion keyed shaft
NOTE:
Position the torsion shaft so that equal amounts of the shaft extend from each end
bearing bracket.
IF YOU HAVE A COUPLER ASSEMBLY:
Disassemble the coupler assembly by removing
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 from the coupler halves. Loosen the set screws. Set the components
aside.
Coupler assembly
(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
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. of torque (once set screws contact the shaft,
tighten set screws one full turn). Repeat the same process for the other coupler half.
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