830872-0001 REV 12/07/2022
©Copyright 2022 Wayne Dalton, a division of Overhead Door Corporation
9
4. BARREL AND HEADPLATE BRACKETS
• Set barrel assembly on blocks or sawhorses so headplate brackets clear the
floor. See Figures 9 and 10.
• Install set collar on tension shaft BEFORE sliding tension headplate on.
• Slide drive end of barrel assembly through drive bracket bearing, and tension
end through tension bracket.
• The distance between the headplate brackets should be the “S” dimension on
the “DATA SHEET”.
WARNING
Counterbalance damage could allow curtain to close rapidly which could result in
death or serious injury. A right hand drive headplate must be used with right hand
barrel assembly to prevent damage; left hand drive headplate and left hand barrel
must also match.
5. TENSION WHEEL
• Secure tension wheel to tension shaft, as shown in Figure 9.
• Use a 3/8 or 1/2 key to secure Tension Wheel to shaft. See Figure 11a and 11b.
• If Tension Wheel is 11” in diameter or larger, slide set collar next to Tension
Wheel and secure to tension shaft, as shown in Figure 9.
NOTE:
Tension wheel must remain free of spring tension until instructed to apply
tension.
SET COLLAR
SET COLLAR
(required for 11” dia. wheel ONLY)
BEARING ASSEMBLY
Tension Wheel
Key
Figure 11a
Figure 9
RH Drive shown, LH opposite
Figure 10
RH Drive shown, LH opposite
Figure 12
Key
Set Collar
(Required for 11” dia. wheel ONLY)
Key
Figure 11b
Tension
Wheel
Set Screw
WARNING
Tension Wheel holds spring tension. Failure to key shaft could allow Tension Wheel
to fall or door to freefall causing severe injury or death. Verify that set collar is
installed to retain the adjusting wheel.
6. DRIVE SHAFT
• Slide Drive Shaft Sprocket onto Drive Shaft up against the
head plate bracket. Place key in Drive Shaft such that it aligns
with keyway in Sprocket.
• Loosely secure the set screw in the Drive Shaft Sprocket to the
Drive shaft, as shown in Figure 12.
NOTE:
The drive sprocket will be fully tightened after the operator
is installed and aligned with it.
Drive Shaft
Sprocket
Drive Shaft
Headplate
Bracket
Set Screw
Pre-Door Install (continued)
