Craftsman 139.53989 Manual Del Propietário página 8

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ASSEMBLY
STEP
1
Assemble
the
Rail
& 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
(see illustration).
The hole above this window
is
larger on the top of the rail than on the bottom. A
smaller hole 3-1/2" (8.9 cm) away is close to the rail
edge. Rotate the back rail so it has a similar hole
close to the opposite
edge, about 4-3/4" (12 cm)
from the far end. A 5-piece rail uses four back rails.
NOTE: Using the sequence above ,the clips will be
facing down.
1. Remove the straight door arm and hanging
brackets packaged inside the front rail and set
aside for Installation Step 5 and 12. 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.
To prevent INJURYfrom pinching, keep hands and
fingers away from the joints while assembling the rail.
NOTE: Rail sections may be assembled with the
clips up or down (down is preferred) disassembly of
rail may damage clips.
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 trolley stop, clamp a locking pliers
onto the rail, 8" (20 cm) from the center of the
idler pulley hole, as shown.
5. Check to be sure there are 4 plastic wear pads
inside the inner trolley, tf they became loose
during shipping, check all packing material. Snap
them back into position as shown.
6. Connect the inner and outer trolleys as shown.
7. Slide the trolley assembly along the rail from the
back end to the locked pliers.
KEEP LARGER
HOLE ON TOP
FRONT
RAIL
(TOP)
8" (20 cm) Distance from
Idler Pulley Hole
Idler
1_/
Pulley
,,,
_x_
Window
_ole
_
Cut-Out
Tapered
End of
Rait
End
Front Rail
(TO DOOR)
End
End
inner Trolley
- Wear Pads
End
Trolley
;ack Rails
(TO MOTOR UNIT)

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