Sears 139.18847 Garage Door Opener User Manual


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8
Assembly Step 1
Assemble the T-rail & Attach
the Cable Pulley Bracket
• Align the 3 T-rail sections on a flat surface exactly
as shown. The end sections are identical. Make
sure the "arrow label" on the center section is
pointing toward the door.
• Insert the carriage bolts so the square bolt necks
seat in the square holes in the T-rail end sections
and pass through the round holes in T-rail center
section. Assemble lock nuts, ensure alignment and
tighten.
T-rail
(Center Section)
1/4'' Lock Nut
T-RAIL FRONT
(TO DOOR)
Cable pulley bracket
attaches to FRONT
END of T-rail
T-rail
(End Section)
T-RAIL BACK
(TO OPENER)
T-rail
(End Section)
Carriage Bolt
1/4"-20x1/2"
Brace
Brace
Square Carriage
Bolt Holes
TO GARAGE DOOR
Hex Screws
5/16"-18x7/8"
Cable Pulley
Bracket
Rail Bracket & T-rail Must Be Aligned
Lock Washer
5/16"
Nut
5/16"
Assemble Tee Rail & attach Cable Pulley Bracket
SEARS '92 (525)
4/16/89 - 6/27/89 - 3/9/92 - 4/13/92
Right Wrong
Make sure bolt necks are
seated in the square
holes and rails are
aligned before you
tighten lock nuts. (See
right and wrong views).
Improper assembly can
cause jerky trolley
operation, noise and/or
nuisance door reversals.
To avoid installation difficulties, do not run the garage door opener until instructed to do so.
Assembly Section: Pages 8 – 11
Right Wrong
If T-rail is not assembled
EXACTLY as shown,
trolley will not travel
smoothly along length of
rail or it will hit against
the nuts.
T-rail
(Center Section)
1/4'' Lock Nut
T-RAIL FRONT
(TO DOOR)
Cable pulley bracket
attaches to FRONT
END of T-rail
T-rail
(End Section)
T-RAIL BACK
(TO OPENER)
T-rail
(End Section)
Carriage Bolt
1/4"-20x1/2"
Brace
Brace
Square Carriage
Bolt Holes
TO GARAGE DOOR
Hex Screws
5/16"-18x7/8"
Cable Pulley
Bracket
Rail Bracket & T-rail Must Be Aligned
Lock Washer
5/16"
Nut
5/16"
Assemble Tee Rail & attach Cable Pulley Bracket
SEARS '92 (525)
4/16/89 - 6/27/89 - 3/9/92 - 4/13/92
Right Wrong
Right Wrong
When tightening
the screws, be
sure to keep
bracket parallel
to the rail.
Otherwise, the
rail may bow
when opener is
operated.
T-rail
(Center Section)
1/4'' Lock Nut
T-RAIL FRONT
(TO DOOR)
Cable pulley bracket
attaches to FRONT
END of T-rail
T-rail
(End Section)
T-RAIL BACK
(TO OPENER)
T-rail
(End Section)
Carriage Bolt
1/4"-20x1/2"
Brace
Brace
Square Carriage
Bolt Holes
TO GARAGE DOOR
Hex Screws
5/16"-18x7/8"
Cable Pulley
Bracket
Rail Bracket & T-rail Must Be Aligned
Lock Washer
5/16"
Nut
5/16"
Assemble Tee Rail & attach Cable Pulley Bracket
SEARS '92 (525)
4/16/89 - 6/27/89 - 3/9/92 - 4/13/92
Right Wrong
T-rail
(Center Section)
1/4'' Lock Nut
T-RAIL FRONT
(TO DOOR)
Cable pulley bracket
attaches to FRONT
END of T-rail
T-rail
(End Section)
T-RAIL BACK
(TO OPENER)
T-rail
(End Section)
Carriage Bolt
1/4"-20x1/2"
Brace
Brace
Square Carriage
Bolt Holes
TO GARAGE DOOR
Hex Screws
5/16"-18x7/8"
Cable Pulley
Bracket
Rail Bracket & T-rail Must Be Aligned
Lock Washer
5/16"
Nut
5/16"
Assemble Tee Rail & attach Cable Pulley Bracket
SEARS '92 (525)
4/16/89 - 6/27/89 - 3/9/92 - 4/13/92
Right Wrong
Lock Nut
1/4" - 20 x 7/16"
Carriage Bolts
1/4" - 20 x 1/2"
Hex Screw
5/16" - 18 x 7/8"
Nut
5/16" - 18
Lockwasher
5/16"
Écrou indesserrable
de 1/4 de po-20x7/16 po
Boulon à tête bombée et collet carré de
1/4 de po-20x1/2 po
Vis à tête hexagonale
de 5/16 de po-18x7/8 de po
Écrou de
5/16 de po-18
Rondelle-frein
de 5/16 de po
Hardware Shown Actual Size
• Position the cable pulley bracket on the front end of the
T-rail as shown. Fasten securely with the hardware.
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