Torsion Springs - Overhead door 321 Series Installation Instructions Manual

TORSION SPRING INSTRUCTIONS
Installation of the Torsion Spring System can be extremely
dangerous. All instructions must be strictly followed.
ANCHOR
BRACKET
051070-0000
RED LAG SCREWS
5/16" x 2 ½"
P/N 605574-0002
"RED" WINDING PLUG/
SPRING ASSEMBLY
COUNTERBALANCE
LIFT CABLE
080918-XXXX
LEFT
CABLE DRUM
The drawing above shows all components required to install single and
dual torsion springs. Use only those parts supplied with your door.
Follow the step sequence below for assembly, installation and adjustment.
Step 1. Torsion Spring Pre-assembly
A. Secure anchor plug(s) to anchor bracket.
NOTE:
•
Single torsion spring: If spring is "Left" wound it should
be located on the right side of the anchor bracket. If
spring is "Right" wound it should be located on the left
side of the anchor bracket. See Figure A To determine if
you have a right wound or left wound spring.
•
Dual torsion springs: "Left" wound spring on right side
of bracket and "Right" wound spring on left side.
WARNING TAG
408622-0001
ANCHOR PLUG
SHAFT
NUT
SET SCREW
3/8-16 x 1"
(TWO PER PLUG)
SET SCREW
3/8-16 x 1"
(TWO PER DRUM)
Right
Anchor
Wound
Bracket
Spring
Left
Wound
Spring
Anchor
Plug
"BLACK" WINDING PLUG/
SPRING ASSEMBLY
ANCHOR PLUG
NYLON BEARING
605881-0001
LOCKWASHER
End View
RIGHT WOUND
16
LIFT CABLE
SET SCREW
3/8-16 x 1"
(TWO PER DRUM)
RIGHT
CABLE DRUM
SET SCREW
3/8-16 x 1"
(TWO PER PLUG)
HEX HEAD BOLT
3/8-16 x 1-1/2"
Wind Direction
End View
LEFT WOUND
Figure A