Assembly Section: Pages - Craftsman 139.53225SRT1 Owner's Manual

Assembly Section: Pages 8 - 11
To avoid Installation difficulties, do not mn the garage door opener until Instructed to do so.
Assembly Step I
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.
Make sure bolt necks are
seated In the square
holes and rails are
aligned beforeyou
tighten lock nuts. (See
right and wrong views).
Improper assembly can
cause Jerkytrolley
operation,noise and/or
nuisance door reversals.
Right Wrong
TRAIL BACK
(TOOPENER)
T-r_l
1/4" LockNut (End Sedon)
If T-roll is not assembled
EXACTLY as shown, trolley
will not travel smoothly
along length of rail or If will
hit against the nuts.
Brace
Brace
eB_t
1/4"-20_1/2"
Cable putkDy bracket
attach_ to FRONT
END of T-raU
T-RAILFRONT
(To DOOR)
• Position the cable pulley bracket on the front end of
T-rail as shown. Fasten securely with the hardware.
Ca_e pulley
Bracket
Hardware Shown Actual Size
©
Lod_ N ut Cardege Bolts
1/4" - 20 x 7/16" 1/4" * 20 x 1/2"
When Ifghtening
Q the screws, be
sure to keep
bracket parallel
to the rail.
Otherwise, the
rail may bow
when opener Is
Right Wrong operated.