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344940 REV2 03/17/2020
©
Copyright 2020 Wayne Dalton, a division of Overhead Door Corporation
19
STEP 11A
MANUAL LIFT-UP AND CRANK OPERATION: Installing the drop mechanism components.
IMPORTANT:
STEP 8, WINDING THE COUNTERBALANCE SPRING, MUST BE COMPLETED PRIOR TO PERFORMING THESE NEXT STEPS. DOOR MUST BE IN FULLY CLOSED
POSITION FOR STEP 11A.
Install the clutch disks onto the 3/4” diameter shaft. Install the slotted sprocket, spacer, ¼” shaft key and ratchet tension wheel as shown. Fasten the cotter pin in the end of
the 3/4” shaft, to secure the components from moving laterally. Tighten all set screws on the door sprocket and inner set collar. Verify that the clutch disks rotate freely. Orient
the clutch disks and slotted sprocket as shown below:
STOPS ON CLUTCH DISKS (MUST BE ORIENTED AS SHOWN)
NUT (FACTORY INSTALLED ON SLOTTED SPROCKET)
ROTATE THE SLOTTED SPROCKET CLOCKWISE
(LOOKING AT END OF OPERATOR BRACKET)
UNTIL ALL THE NUTS ON THE TWO SPROCKETS
AND CLUTCH DISKS ARE IN CONTACT.
BRACKET SHOWN
CUT AWAY
NUT (FACTORY
INSTALLED
ON SPROCKET)
RIGHT HAND OPERATED
SLOTTED SPROCKET