26
Step 16-8:
Connect the spring(s) to the corresponding bearing
plate by (2) 3/8” x 1” hex bolts and nuts for single springs or (2)
3/8” x 1-5/8” hex bolts and nuts for double springs. (FIG. 16-E)
Step 16-9:
Slide both red and black cable drums against end
bearings, insert solid shaft keys, and tighten set screws. The set
screws on the cable drum should be tightened with a 3/8" box
wrench.
Step 16-10:
Bring up cable between the wall and roller shafts to
the cable drum. Attach cable by placing in the notch on the
cable drum. Turning the cable drum to remove the cable slack.
Make sure the cable follows the grooves in the cable drum.
Clamp locking pliers shaft and against header to maintain
tension on the cable. This procedure should be repeated on the
opposite side.
Step 16-11:
Bolt shaft coupler together with the other two set
screws.
Important: Return to Step 15-9 (Pg. 24) to finish installation.
STEP 17: Low Headroom Front Torsion
Spring Installation
Step 17-1:
Slip the torsion springs onto the spring tube, the
red
winding cone on the
left
end, the steel center bearing, center
bearing plate, and the
black
winding cone torsion spring on the
right
end (FIG. 17-A).
Spring anchor bracket secures the springs to the wall. You
must fasten securely with red-colored fasteners. Never
remove spring anchor bracket when springs are wound.
Step 17-2:
With an assistant, lift the complete torsion spring tube
assembly and slide the ends of the tube into the bearing on the
end bearing plates. With the tube level, mount the center bearing
plate to the center anchor pad using (2) 5/16" x 1-5/8" red-
headed lag screws. Drill 3/16” pilot hole for each lag screw.
Important:
These pilot holes must be no closer than 1-1/2" from
the sides and ends of the wood anchor pad.
Step 17-3:
Slide cable drums onto both ends of tube on outside
of bearing plate, the
red
drum on the left, and
black
drum on the
right. The set screws on the drums facing outwards.
Important: Return to Step 15-7 (pg. 23) to finish installation.
FIG. 16-E
FIG. 17-A
Center Bearing Plate
3/8” Hex
Nuts
3/8” x1-5/8”
Hex Head Bolts
Red Winding
Cone
Right Wound
Spring
Steel Center
Bearing
Center Bearing
Plate
Left
Wound
Spring
Black Winding Cone
