Craftsman 139.53675SRT - Manual (Page 9)

Assembly Step 3
Fasten the T-rail to the Opener
• Place the opener on packing material to protect
the cover. For convenience, put a support under
the cable pulley bracket
• Remove the (2) 5/16"-18x1/2* washered screws
mounted in the top of the opener.
• Align the holes in the back section of the T-raii with
the holes in the opener,
• Fasten the rati with the (2) washered screws
previously removed, tighten securely.
Ftemember to use only these screws! Any other
screws will cause serious damage to the opener.
• Insert a S/16“-18x7/8* hex screw into the cover
protection bolt hole in the T-rail as shown. Tighten
securely with a 5/16" lock washer and nut
NOTE: This screw prevents trolley over-travel.
Keep a 2“ minimum between the trolley and this
screw when adjusting travel limits {see page 28).
Hardware Shown Actual Size
Hex Screw
S/)6'-iax7/8*
Lock Washer
S/ 16 *
To fasten rail, use only those screws mounted
in the top of the opener. Any other screws will
cause serious damage to the opener.
Washered Screw
S/IS’-iaxt/r
Hex Screw
5 / 16 *- 1 Sx 7 /B'
Cover
Protecijon
Bolt Hole
T-raB
{Sack Section)
Nut
S/16*-18