Hang The Opener - Craftsman 139.53990 Owner's Manual

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. This
bracket and fastening hardware are not provided.
(See Accessories).
Toavoidpossible SERIOUS INJURYfroma falling
garage dooropener, f asten it SECURELY to structural
supports of thegarage.Concrete anchors MUSTbe used
if installing anybrackets intomasonry.
Figure 1
1. Measure the distance from each side of the motor
unit to the structuralsupport.
2. Cut both pieces of the hanging bracket to required
lengths.
3. Drill 3/16" pilot holes in the structuralsupports.
4. Attach one end of each bracket to a supportwith
5/16"-18xl -7/8" lag screws.
5. Fasten the opener to the hanging brackets with
5/16"-18x7/8" hex bolts, lock washers and nuts.
6. Check to 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. Remove the 2x4. Operate the door manually.If the
door hits the rail, raise the header bracket.
NOTE: DO NOT connect power to opener at this
time.
Bolt 5,'16"-18x718"
Nut 5/16"-18
• Lag Screws
5/16"-18xl-7/8"
Figure 2
-- Finished Ceiling --
Lag Screws
__.+ 5/16=*18xl-718 - _._"
Nut 5/16"-18
HARDWARE SHOWN ACTUAL SIZE
5/16"-18xl-7/8"
Hex Bolt
5/16"- 18X7/8" Nut 5/16%18
©
Lock Washer 5/16"
17