Wayne-Dalton 9405 Installation Instructions And Owner's Manual - Warning
IMPORTANT: SPRING RESTRAINT CABLES MUST BE TAUT AND EQUALIZED.
Locking
pliers
NOTE: This illustration shows the outside of the door
in the open position.
Bottom
section
Track
roller
5/16”-18 x 3-3/4”
Eye bolt
Horizontal
track
Extension
spring
Back
view
Front view
Spring restraint
cable
Spring
restraint
cable
Loop
Spring safety
cable
5/16” x 1-5/8”
Lag bolt
3 Hole
clip
Special
knot
3 Hole
clip
Rear
back
hang
Extension
spring
5/16”-18 x 3-3/4”
Eye bolt
Extension
spring
Special
knot
3
Hole
clip
Rear
back
hang
Rear
back
hang
Spring
restraint
cable
5/16”-18 x 3-3/4”
Eye bolt
5/16”-18
Hex nut
Extension
spring
Horizontal track
5/16”-18
Hex nut
Extension spring bracket
5/16”-18 Hex nut
5/16” - 18 x 1”
Hex bolt
Spring
restraint
cable
NOTE: As an option, eyebolt may be fastened to rear back hangs and extension spring bracket
left unused. The extension spring bracket is useful in applications where rear headroom is
small, resulting in short rear back hangs.
NOTE: Some larger doors feature 2 pairs of extension springs. A spring restraint cable must
be installed through each spring.
Rear
cable lift
sheave
Sheave fork
Horizontal track
Hook plate
This illustration shows doors featuring (2) pairs of extension springs
Counterbalance
lift cable
Counterbalance
lift cable
Spring restraint
cable
Attaching Spring Sheaves
14
Hook the sheave fork through the front loop of the extension spring. Attach the sheave fork
to the rear cable lift sheave using (1) 3/8” - 16 x 1-1/4” hex head bolt and (1) 3/8” - 16 hex
nut. Thread the counterbalance lift cable over the front cable lift sheave and around the rear
cable lift sheave. On one end of the 3 hole clip, tie the special knot. On the opposite side of
the 3 hole clip hook a large “S” hook into it. Secure the opposite end of the large “S” hook
into the horizontal track, as shown. Repeat the same process for the other side.
IMPORTANT: CLOSE “S” HOOKS AND EYE BOLTS WITH LOCKING PLIERS, TO PREVENT
SPRINGS FROM COMING LOOSE.
WARNING
FAILURE TO CLOSE “S” HOOKS AND EYE BOLTS CAN RESULT IN SEVER
OR FATAL INJURY IF SPRINGS COME LOOSE.
Horizontal
track
Spring
restraint
cable
Rear back hang
Extension
spring
3/8”-16 x 1-1/4”
Hex head bolt
3/8” - 16
Hex nut
Sheave fork
Extension spring
Rear cable lift sheave
Sheave fork
Extension spring
Rear cable
lift sheave
3 Hole clip
Special
knot
Counterbalance
lift cable
“S”
Hook
“S”
Hook
Counterbalance Lift Cable Adjustments
15
Adjust counterbalance lift cables to create about 1” to 2” (25 mm to 50 mm) of pre-stretch
on the extension spring, with the door in the fully opened position. Measure extension spring
length (door open) and verify with the chart below. Spring length must be the same for both
left hand and right hand extension springs to allow even door balance. Carefully remove the
locking pliers from the horizontal track and lower the door into the closed position. Once the
door is closed, measure the extension spring length for both sides. Using the chart, verify the
spring length extended is correct for your door height.
Door Height
Spring Length (Door Open)
(Does Not Include Pre-
stretch)
Spring Length Extended
(Door Closed)
(Does Not Include Pre-
stretch)
6’ 0”
25” (635 mm)
61” (1549 mm)
6’ 3”
25” (635 mm)
62-1/2” (1588 mm)
6’ 6”
25” (635 mm)
64” (1626 mm)
7’ 0”
25” (635 mm)
67” (1702 mm)
7’ 6”
27” (686 mm)
72” (1829 mm)
7’ 9”
27” (686 mm)
73-1/2” (1867 mm)
8’ 0”
27” (686 mm)
75” (1905 mm)
Balancing Door
16
If door raises more than 2 ft. under spring tension alone, reduce spring tension. Adjust
extension spring length by loosening the special knot on the 3 hole clip and lengthen the
counterbalance lift cable between the 3 hole clip and the extension spring about 1/2”. If door
is hard to raise or drifts down on its own, add spring tension. Adjust extension spring length
by loosening the special knot on the 3 hole clip and shortening the counterbalance lift cable
between the 3 hole clip and the extension spring about 1/2”. A poorly balanced door can
cause garage door operator problems.
IMPORTANT: WHENEVER ADJUSTING EXTENSION SPRING LENGTH FOR DOOR BALANCE,
ALWAYS OPEN THE DOOR TO THE FULLY OPEN POSITION AND RETURN THE LOCKING
PLIERS, AS SHOWN IN F3 TO THE HORIZONTAL TRACKS BELOW THE BOTTOM TRACK
ROLLERS.
If the door still does not operate easily, raise the door into the open position, return the lock-
ing pliers, and recheck the following items:
1.) Is the door level?
2.) Are the flag angles level and plumb?
3.) Does the distance between the flag angles equal door width plus 3-3/8” to 3-1/2”?
4.) Do the counterbalance lift cables have equal tension? Adjust by re-tieing the special knot,
if necessary.
5.) Make sure door is not rubbing on jambs.
IMPORTANT: IF DOOR STILL DOES NOT BALANCE PROPERLY, THEN CONTACT A TRAINED
DOOR SYSTEM TECHNICIAN.
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