Craftsman 139.53403 - Manual (Page 6)

Assembly
TO AVOID INSTALLATION DIFFICULTIES, DO NOT RUN THE GARAGE DOOR OPENER UNTIL YOU ARE
INSTRUCTED TO DO SO.
1
Assemble Tee Rail & Attach Cable Pulley Bracket
TEE RAIL BACK
{TO CHASSIS)
CAUTION: Do not tighten the lock nuts until bolt
necks are seated in square holes.
Tee Rail
(End Section)
1/4'LockHu!
Tee Rail
(Center Section)
The center rail section MUST be
positioned on the LEFT SIDE of end
rails as shown.
Otherwise, trolley will hit against nut
when installed (Pg. 7).
Tee Rail
(End Sectiorr)
Square Carriage
Bolt Hole
Cable pulley bracket
attaches to FRONT
END of Tee Rail
TEE RAIL FRONT
(TO DOOR)
Carriage Bolt
1/4"-20x1/2"
PROCEDURE: Place the 3 Tee rail sections on a flat
surface for assembiy. THIS IS IMPORTANT, The end
sections are identical. THE CENTER SECTION MUST BE
POSITIONED WITH THE BRACES ON THE LEFTSIDE OF
END SECTIONS. If there is a label attached to the cen­
ter section, make sure that the "directional arrow” is
pointing toward the front {to door).. Otherwise, study
the illustration CAREFULLY
(When assembled, Tee rail has a front-to-back posi­
tion as shown).
Bolt rail sections together with the hardware illus­
trated and from the direction indicated
SQUARE NECKS ON CARRIAGE BOLTS MUST BE
SEATED IN SQUARE HOLES IN RAIL SECTIONS,
Screws
, 5/16''-iax7/B "
Cable Pulley
Bracke!
Lock Washer
5/16"
Position cable pulley bracket on front end of tee rail as
shown. Fasten securely with the hardware provided.
IMPORTANT: When tightening screws, besureto
keep bracket parallel to rail. Otherwise, rail may
bow when opener is operated.