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9
ASSEMBLY STEP 2
Fasten the Rail to the Motor Unit
• Insert a 1/4"-20x2" bolt, washer and spacer 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 bolt and lock nut from the top of the motor
unit.
• Attach spreader to the motor unit with two screws.
• Place the “U” bracket, fl at side down onto the bolt
mounted on the motor unit and align the bracket hole
with the bolt holes. Fasten with the previously removed
bolt and lock nut.
• 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.
To avoid SERIOUS damage to garage door opener,
use ONLY those bolts/fasteners mounted in the top of
the opener.
Hex Screws
8-32x7/16"
Bolt
Bolt
Lock Nut
Chain
Spreader
Motor Unit
Sprocket
Washer
Spacer
Lock Nut
Cover
Protection
Bolt Hole
SLIDE RAIL TO
STOPS ON TOP AND
SIDES OF BRACKET
“U” Bracket
HARDWARE SHOWN ACTUAL SIZE
Spacer
Washer 5/8"
Lock Nut
1/4"-20
ASSEMBLY STEP 3
Install the Idler Pulley
• Lay the chain/cable beside the rail, as shown. Grasp
the end with the cable loop 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.
HARDWARE SHOWN
ACTUAL SIZE
Bolt 1/4"-20x1-3/4"
Idler Bolt
Lock Nut 1/4"-20 Nut 3/8"
Lock Washer 3/8"
Chain and Cable
Bolt
Pulley
Rail
Nut
Washer
Screwdriver
Trolley
Idler
Bolt
Lock
Washer
3/8"
Cable
Link
Idler
Pulley
Grease
Inside
Pulley
Trolley
Stop
Hole
Idler
Pulley
Lock
Nut
Bolt
Nut
3/8"
Bolt 1/4"-20x2"