Installation Step 5
Hang the Opener
Two representative installations are shown.
Yours may be different. Hanging brackets should
be angled, Figure 1, to provide rigid support. On
finished ceilings, Figure 2, attach a sturdy metal
bracket to structural supports before installing the
opener. The bracket and fastening hardware are not
supplied.
• 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 structural supports.
• Attach one end of each bracket to a support with
5/16"-9x1-5/8" lag screws.
• Fasten the opener to the hanging brackets with
5/16"-18x7/8" hex 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.
Measure
Distance
Lag Screws
5/16"-9x1-5/8"
Bracket
(Not Supplied)
Lag Screws
5/16"-9x1-5/8"
(Not Supplied)
5/16"-18x7/8" Screw
5/16" Lock Washer
5/16"-18 Nut
FINISHED CEILING
5/16"-18x7/8" Screw
Structural
Supports
5/16" Lock Washer
5/16"-18 Nut
Hidden
Support
5/16"-18x7/8" Screw
5/16" Lock Washer
5/16"-18 Nut
17
The opener could fall and injure someone if it is
not properly secured. Fasten the opener
securely to structural supports of the garage.
Figure 1
Figure 2
Hex Screw
5/16"- 18 x 7/8"
Nut 5/16" - 18
Lockwasher 5/16"
Lag Screw
5/16"- 9 x 1-5/8" (4)
Hardware Shown Actual Size
WARNING
CAUTION
WARNING
Grease the top and underside of
the rail surface where the
trolley slides with rail
grease.
RAIL GREASE
NO. 83A4
Rail Grease
The Chamberlain Group, Inc.
Liftmaster Combination
5/23/92
