Hang The Opener - Craftsman 139.53903DM Owner's Manual

INSTALLATION STEP 5
Hang the Opener
Three representative installations are shown. Yours may be
different. Hanging brackets should be angled (Figure 1) to provide
rigid support. On finished ceilings (Figure 2 and Figure 3), attach
a sturdy metal bracket to structural supports before installing the
opener. This bracket and fastening hardware are not provided.
1. Measure the distance from each side of the motor unit to the
structural support.
2. Cut both pieces of the hanging bracket to required lengths.
3. Drill 3/16" pilot holes in the structural supports.
4. Attach one end of each bracket to a support with
5/16"-18xl -7/8" lag screws.
5. Fastenthe opener to the hanging brackets with 5/16"-18x7/8"
hex bolts, lock washers and nuts.
6. Checkto make sure the rail is centered over the door (or in line
with the header bracket if the bracket is not centered above the
door).
7. Removethe 2x4. Operatethe door manually. If the door hits
the rail, raise the header bracket.
NOTE:DO NOTconnect power to opener at this time.
HARDWARESHOWN ACTUALSIZE
Hex Bolt
5/16"- 18x7/8" Nut 5/16"- 18 Lock Washer 5/16"
To avoid possible SERIOUSINJURYfrom a falling garage door
opener, fasten it SECURELY to structural supports of the
garage. Concrete anchors MUST be used if installing ANY
brackets into masonry.
Figure I
Structural
/ Supports
Measure ',
Distance
\
Bolt 5/16"-18x7/8" ,,
Lock Washer 5/16"
Nut 5/16"-18
\
Lag Screws
5/16"- 18x 1-7/8"
Figure2
Bolt 5/16"-18x7/8"
Lock Washer 5/16'
Nut 5/16"-18
FINISHED CEILING
(Not Provided)
......... Bolt 5/16"- 18x7/8"
Lock Washer 5/16"
Nut 5/16"-18
Figure3
Lag Screws
5/16"-18xl -7/8".
Bolt 5/16"- 18x7/8"
Lock Washer 5/16"
Nut 5/16"-18
(Not Provided)
Lock Washer 5/16"
Nut 5/16"-18
16