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ASSEMBLY STEP 2
Fasten the Rail to the Motor Unit
• Insert a 1/4"-20xl-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 NOTovertighten.
• 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
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Lock Nut
Bolt 1/4"-20xl -3/4" 1/4"-20
Toavoid SERIOUSdamageto garagedoor opener, useONLY
those bolts/fasteners mounted in the top of the opener.
Chain
Spreader
Bolt
I
Cover
Protection
Bolt Hole
"U" Bracket
\
\
N
Motor Unit
Sprocket
J Lock Nut
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"-20xl-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.
Chain and
Cable
Bolt
Washer
Idler _ Trolley
Bolt tl Screwdriver \
I
I
I
I
I
Lock I
Washer
3/8" E
Bolt
I
Trolley
t
Grease Stop
_ _._ Inside Pulley Hole
'_ Idler "'",
U
Pulley
_- Lock
Idler , Nut
Pulley
Idler Bolt
HARDWARE SHOWN ACTUAL SIZE
Jli}_
i/J'Jj
Bolt 1/4"-20x1-3/4 Lock Nut 1/4"-20 Nut 3/8"
Lock Washer 3/8"