Facing the inside of the door, either lay the torsion shaft / torsion keyed shaft on the floor or
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.
IMPORTANT:
DEPENDING ON YOUR DOOR APPLICATION, USE ONE OF THE THREE ILLUS-
TRATION’S, SHOWN BELOW TO ASSEMBLE YOUR TORSION COUNTERBALANCE SYSTEM.
IF YOU HAVE ONE OR TWO TORSION SPRINGS AND ONE PIECE TORSION SHAFT:
Torsion shaft
or
Torsion keyed shaft
Left wound, black winding
cone (left hand side)
Right wound, red winding
cone (right hand side)
One or Two springs, One piece shaft
Oval
bearing
IMPORTANT:
ON SINGLE SPRING
APPLICATIONS, ONLY A RIGHT WOUND
(RED WINDING CONE), WHICH GOES ON
THE RIGHT HAND SIDE IS REQUIRED.
IF YOU HAVE FOUR TORSION SPRINGS AND ONE PIECE TORSION SHAFT / TORSION
KEYED SHAFT:
Torsion shaft
or
Torsion keyed
shaft
Right wound, red
winding cone (left
hand side)
Left wound, black
winding cone (left
hand side)
Right wound, red winding cone
(right hand side)
Left wound, black
winding cone (right
hand side)
Center
bearing
Four springs, One piece shaft
IF YOU HAVE TWO OR FOUR TORSION SPRINGS AND TWO PIECE TORSION KEYED
SHAFTS:
Torsion
keyed
shaft
Right wound, red
winding cone (left
hand side)
Left wound, black
winding cone (left
hand side)
Right wound, red
winding cone (right
hand side)
Left wound, black
winding cone (right
hand side)
Coupler
halves
Torsion keyed shaft
Center bearings
Two or Four springs, Two piece shafts
Oval
bearings
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. Next, slide the flat edge of the
couple half flush with the side edge of the torsion keyed shaft. Insert (1) keyed shaft into the
slot of both the coupler half and the slot in the torsion keyed shaft, as shown. Tighten the (2)
set screws and the locking nut to secure the coupler half to the torsion keyed shaft.
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 side.
Torsion
keyed
shaft
Coupler
halves
(6) Set screws
and (2) Lock nuts
Torsion
keyed
shaft
Key
Key
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
Slide either the center bearing bracket or the center bearing(s) or the oval bearing(s) onto the
torsion shaft / torsion keyed shaft(s) followed by the torsion spring(s).
IMPORTANT:
THE CENTER BEARING BRACKET, THE CENTER BEARING(S), THE OVAL
BEARING(S), THE COUPLER HALF’S AND THE TORSION SPRINGS, MUST BE POSITIONED, AS
SHOWN.
WARNING
CENTER BEARING BRACKETS WITH SPRINGS MUST BE SECURELY
FASTENED INTO SOLID STRUCTURAL MEMBERS ONLY AND MUST BE
ADEQUATELY REINFORCED TO HOLD THE LOAD OF TORSION SPRING
ASSEMBLIES. FAILURE TO DO SO CAN CAUSE SEVERE OR FATAL INJURY.
NOTE:
If applicable, it is recommended that 5/16” lag screws are pilot drilled using a 3/16”
drill bit, prior to fastening the center bracket to the ceiling.
Referring to Step, Rear Back Hangs either secure the center bearing bracket(s) to the ceiling
using perforated angle at the center of the opening width using 3/8” - 16 x 3/4” hex head
bolts and nuts (not supplied) or to wood blocking (adequate framing member(s)) at the center
of the opening width using 5/16” x 1-5/8” RED HEAD hex head lag screws.
IMPORTANT:
THE 5/16” RED HEAD LAG SCREWS MUST BE ATTACHED TO THE CENTER
BRACKET(S).
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).
Center
bracket
Adequate
framing
member
Torsion shaft /
Torsion keyed
shaft
Adequate framing
members
Center
brackets
Torsion
keyed
shafts
† (2) Center bearing brackets spaced
6” to 7” apart from the center of
opening width.
Center of
opening
width
†12”
5/16” x 1-5/8” Hex head
lag screws (RED HEAD)
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)
9
