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ASSEMBLY STEP 2
Fasten the Rail to the Motor Unit
• Insert a 1/4"-20x1-3/4 bolt into the cover protection bolt
hole on the back end of the rail as shown. Tighten
securely with a 1/4"-20 lock nut. Do NOT overtighten.
• Remove the two bolts from the top of the motor unit.
• Place the "U" bracket, flat side down onto the motor
unit and align the bracket hole with the bolt holes.
Fasten with the previously removed bolts.
• Align the rail assembly with the top of the motor unit.
Slide the rail end onto the "U" bracket, all the way to
the stops that protrude on the top and sides of the
bracket.
• Attach spreader to the motor unit with two screws.
HARDWARE SHOWN ACTUAL SIZE
Bolt 1/4"-20x1-3/4"
ASSEMBLY STEP 3
Install the Idler Pulley
• Lay the chain/cable beside the rail, as shown. Grasp
the end of the cable and pass approximately 12" (30
cm) of cable through the window. Allow it to hang until
Assembly Step 5.
• Remove the tape from the idler pulley. The inside
center should be pre-greased. If dry, regrease to
ensure proper operation.
• Place the idler pulley into the window as shown.
• Insert the idler bolt from the top through the rail and
pulley. Tighten with a 3/8" lock washer and nut
underneath the rail until the lock washer is
compressed.
• Rotate the pulley to be sure it spins freely.
• Insert a 1/4"-20x1-3/4 bolt into the trolley stop hole in
the front of the rail as shown. Tighten securely with a
1/4"-20 lock nut.
Idler Bolt
To avoid SERIOUS damage to garage door opener, use ONLY
those bolts/fasteners mounted in the top of the opener.
Cover
Protection
Bolt Hole
Lock Nut
1/4"-20
Chain and
Cable
Idler
Bolt
Lock
Washer
3/8"
HARDWARE SHOWN ACTUAL SIZE
Bolt 1/4"-20x1-3/4
9
WARNING
CAUTION
Hex Screws
8-32x7/16"
Bolt
"U" Bracket
Bolt
SLIDE RAIL TO STOPS
ON TOP AND SIDES
OF BRACKET
Lock Nut
Pulley
Washer
Trolley
Screwdriver
Nut 3/8"
Cable Link
Lock Nut 1/4"-20
Nut 3/8"
Chain
Spreader
Motor Unit
Sprocket
Bolt
Rail
Nut
Bolt
Trolley
Stop Hole
Grease
Inside Pulley
Idler
Pulley
Lock
Idler
Nut
Pulley
Lock Washer 3/8"
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