ASSEMBLY
STEP
2
Fasten
the Rail to the Motor
Unit
• Insert a 1/4"-20 x 1-3/4 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.
• Remove the two bolts from the top of the motor
unit.
• Attach spreaders to the U bracket by snapping
them into place.
• Place the U bracket, flat side down, on the motor
unit and align the bracket holes 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.
HARDWARE
SHOWN ACTUAL
SIZE
_"r'-'_'_"l
[_
Lock Nut
Bolt 1/4"-20 x I-3/4
1/4"-20
To avoid SERIOUSdamage to garage door opener, use
ONLYthose bolts/fasteners mounted in the top of the
opener.
"U" Bracket
Bolt
I
Cover
Protection
Bolt
Hole
Bolts
Motor Unit
Sprocket
Hook Belt Spreader
i
SLIDE RAiL TO STOPS
ON TOP AND SIDES
\
OF BRACKET
i
Lock Nut
ASSEMBLY
STEP
3
Install
the Idler
Pulley
• Lay the belt beside the rail, as shown. Grasp the
end with the hooked trolley connector and pass
approximately
12" (30 cm) of belt through the
window. Keep the ribbed side toward the rail, and
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"-20 x 1-3/4 bolt into the trolley stop
hole in the front of the rail as shown. Tighten
securely with a 1/4"-20 lock nut.
Grease
Inside Pulley
3/8" Lock
Trolley
idler
Washer
Pulley
HARDWARE
SHOWN ACTUAL
SIZE
_
idler Bolt
Bolt 1/4"-20 x 1-3/4
Lock Nut 1/4"-20
Nut 3/8"
Lock Washer
3/8"
9