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7
Assembly
STEP 2 Fasten the rail to the motor unit
To avoid SERIOUS damage to garage door opener, use ONLY those bolts/fasteners mounted in the
top ofthe opener.
1. Insert a 1/4"-20 x1-3/4" boltinto the cover protection bolt hole on the backend ofthe rail as
shown. Tighten securely with a 1/4"-20 locknut. DO NOT overtighten.
2. Remove the boltsfrom the top ofthe motor unit.
3. Use the carton to support the front end of the rail.
4. Place the “U” bracket,flatside down onto the motor unit and align the bracket holes with the
bolt holes.
5. Fasten the “U” bracket with the previouslyremoved bolts;DO NOT use any power tools. The
use of power tools may permanentlydamage the garage door opener.
Bolt
1/4"-20x1-3/4"
Lock Nut
1/4"-20
HARDWARE
“U” Bracket
Cover Protection
Bolt Hole
Bolt
Lock Nut
Bolts (Mounted in the garage door opener)
STEP 3 Install the idler pulley
1. Lay the belt beside the rail, as shown.Grasp the end with the hooked trolley connector and
passapproximately 12" (30 cm) of belt through the window.Keep the ribbed side toward the
rail, and allow it to hang until Assembly Step 4.
2. Remove the tape from the idler pulley.The inside center should be pre-greased. If dry,
regrease to ensure proper operation.
3. Place the idler pulley into the window as shown.
4. 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.
5. Rotate the pulley to be sure itspins freely.
6. Locate the rail tab. The rail tab is between the idler bolt and the trolley in the front rail section.
Use a flathead screwdriver and lift the rail tab until the tab is vertical (90º).
Rail
Idler Pulley
Grease Inside Pulley
Bolt
Belt
Lock Washer
Nut
Bolt
Nut 3/8" Lock Washer 3/8"
HARDWARE
Trolley Connector
Rail Tab
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