Assembly Step; Assemble The Rail And Install The Trolley; Fasten The Rail To The Motor Unit - Craftsman 139.3043 Manual Del Propietário

ASSEMBLY STEP 1

Assemble the Rail and Install the Trolley

To avoid installation difficulties, do not run the garage door
opener until instructed to do so.
The front rail has a cut out "window" at the door end. The front
rail has a rail tab. This tab MUST be on the top of the rail when
assembled.
1. Remove the straight door arm and hanging bracket packaged
inside the front rail and set aside for Installation Steps 5 and 9.
NOTE: To prevent INJURY while unpacking the rail carefully
remove the straight door arm stored within the rail section.
2. Align the rail sections on a flat surface as shown and slide the
tapered ends into the larger ones. Tabs along the side will lock
into place.
3. Place the motor unit on packing material to protect the cover,
and rest the back end of the rail on top. For convenience, put a
support under the front end of the rail.
4. As a temporary stop, insert a screwdriver into the hole
10" (25 cm) from the front end of the rail, as shown.
5. Check to be sure there are 4 plastic wear pads inside the inner
trolley. If they became loose during shipping, check all packing
material. Snap them back into position as shown.
6. Slide the trolley assembly along the rail from the back end to
the screwdriver.
7. Slide the rail onto the "U" bracket, until it reaches all the stops
on the top and sides of the "U" bracket.
ASSEMBLY STEP 2

Fasten the Rail to the Motor Unit

1. 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.
2. Remove the two bolts from the top of the motor unit.
3. Use the carton to support the front end of the rail.
4. Place the "U" bracket, flat side down onto the motor unit and
align the bracket holes with the bolt holes. Fasten the "U"
bracket with the previously removed bolts; DO NOT use any
power tools. The use of power tools may permanently damage
the garage door opener.
HARDWARE SHOWN ACTUAL SIZE
Bolt 1/4"-20x1-3/4"
To prevent INJURY from pinching, keep hands and fingers
away from the joints while assembling the rail.
Inner Trolley
Front Rail
Section
(TO DOOR)
To avoid SERIOUS damage to garage door opener, use ONLY
those bolts/fasteners mounted in the top of the opener.
Bolt 1/4"-20x1-3/4"
Cover
Protection
Bolt Hole
Lock Nut
1/4"-20
8
Outer Trolley
Wear Pads
Trolley
Rail
Tab
Idler
Pulley
Hole
Window
Cut-Out
Bolts
"U" Bracket
Lock Nut
1/4"-20
To garage
door opener
(TO MOTOR UNIT)
"U" Bracket
SLIDE TO STOPS
ON TOP AND
SIDES OF
"U" BRACKET