Craftsman 139.53675SRT - Manual (Page 17)

Installation Step 5
Häng the Opener
The opener coutd fait and Injure someone If ft
is not properly secured. Fasten the opener
securely to structural supports of the garage.
Two representative installations are shown.
Yours may be different Hanging brackets shouid
be angled, Rgure 1, to provide rigid support On
finished ceilings, Rgure 2, attach a sturdy metal
bracket to structural supports before installing the
opener. The bracket and fastening hardware are not
supplied. See accessory page 38.
• Measure the distance from each side of the opener
to the structural support
• Cut both pieces of the hanging bracket to required
lengths.
• Drill 3/16' pilot holes in the structurai supports.
• Attach one end of each bracket to a support with
5/16'-18x1*7/8' iag screws.
• Fasten the opener to the hanging brackets with
5/16“-18x7/8“ screws, lock washers and nuts.
• Check to make sure the T*rail is centered over the
door (or in line with the header bracket if the
bracket is not centered above the door).
• Remove the 2x4. Operate the door manually. If the
door hits the rail, raise the header bracket.
Figure 1
Stiuctoral
Suppofts
S/16'-iax7/B’ Scfflw,
5/16" Look Washar
S/16M8 Niit
Moäsuro
Dismnca
Grease the top and underside of the
rail surface where the trolley
slides. A tube of grease is
supplied.
Figure 2
Bracket
(Nat SuppiteP) .
HWden
Support
Rrished Ceiling-
:■ (Not Supplied)
S/ie*-18x7/8* Screw
5f16" Lock Wa^r
S/t 6*-18x7/8* Screw
S/16* Lode Washer
5/16*.18 Nut
Hardware Shown Actual Size
Lag Screw
5/ie*-t8x1.7/8* PI)
Hex Screw
S/16*-16x7/8* NUI5/16--18 Lock Washer 5/16*