Craftsman 139.53675SRT - Manual (Page 8)

Assembly Section: Pages 8 - 1 1
To avoid installation difficulties, do not run the garage door opener until Instructed to do so.
Assembly Step 1
Assemble the T-rail &
Attach the Cable Pulley Bracket
* Place the 3 T-rail sections on a flat surface for
assembly. The end sections are idenficai. Make
sure the "arrow label" on the center section is
pointing toward the door.
• Insert the carriage bolts so the square boit necks
seat in the square holes in the T-rafI end sections
and pass through the round holes in T-rafi center
section. Assemble lock nuts, ensure alignment and
tighten.
Make sure bait necks are
seated In the square
holes and rails are
aligned before you
tighten lock nuts. (See
right and wrong views).
Improper assembly can
E^use jerky troJIey
operation, noise and/or
nuisance door reversals.
Wrong
T-RAlLaACK
(Tooparsî)
1M* Look Nu!
If T-raii is not assembled
EXACTLY as shown,
trolley Will not travel
smoothly along length of
rail or It will hit against
the nuts.
Carnage Soit
Cabio pulley bracket
attaches lo f^ONT
dl'lli« Ul I (cUt Square Carnage
Bolt Holes
T-RAIL FRONT
(TO OOOR)
Cable FuUey
Bracket
Lock Washer © 0..,
S/16' > !
SiW
► Position the rable pulley bracket on the tont end of the
T-rail as shown. Fasten securely with the hardware.
Hardware Shown Actual Size
Lock Nut
1 M*- 20 xr/ 16 *
Catiiage Bolts
Hex Screw
stir-iaxT/B"
Lock Washer
5/1 g-
Right Wrong
When
tightening the
screws, be
sure to keep
bracket parallel
to the rail.
Otherwise, the
rail may bow
when opener is
opsrstsd.