Chamberlain 1042 Garage Door Opener User Manual


 
12
PN# 3642036534, 02/26/2010 REV. 1
FIG. 2-2 Finding highest point of travel.
NSTALLATION
FOR HELP-1.800.354.3643 OR WWW.GENIECOMPANY.COM
2
HEADER AND DOOR
MOUNTING BRACKETS:
1. Finding header bracket mounting location.
Close garage door.
– Use a pencil and level.
a) Mark center of garage door (one-half overall
width) on the wall with 6" vertical line at top
edge of door.
b) Continue this line on wall above door for
about 12" (Fig. 2-1, a).
Raise garage door until top edge of door
reaches its maximum height
(Fig. 2-2)
.
With door at highest point.
Measure height from top edge of door to floor
(Fig. 2-2).
Close door again.
Mark height measurement on wall above door
(Fig. 2-1, c)
.
Make your mark across vertical line made earlier.
Add 2-1/2" to height mark just made on
wall. This
is location for header bracket (Fig. 2-1, d).
NOTE: If header bracket location needs to be
above header for garage door opening, you need
to add a "mounting surface."
A 2" x 6" board
securely attached (board and fasteners not
included) to wall studs on either side of your mark
is suf
ficient (Fig. 2-3).
NOTE: For header bracket and bolts locate Bag 2
from Box 1.
NOTE: The bolts supplied in Bag 2 are designed
to be used on pressure treated lumber.
2. Mounting the header bracket.
Hold header bracket against wall
(Fig. 2-3).
Position bracket as shown.
Place center on vertical line,
Bottom edge on final height line.
Mark screw hole locations on wall.
Drill 3/16" pilot holes at each screw hole mark.
Fasten header bracket with 2 lag screws
(provided) (Fig. 2-3).
FIG. 2-1 Final height mark.
Header bracket must be fastened to garage
framing. Do NOT fasten to drywall, particle
board, plaster or other such materials.
WARNING
2-1/2"
top of door
in closed
position
d) - final
height mark
HIGHEST POINT OF TRAVEL
TRACK
SECTIONAL
DOOR
HEADER
FROM HERE
TO FLOOR
2-1/2"
HIGHEST POINT OF TRAVEL
TRACK
SECTIONAL
DOOR
HEADER
FROM HERE
TO FLOOR
a) - 6" vertical
line
b) - extend
vertical line
c) - door at
highest point
door at highest point
door at highest point
final height mark
final height
mark
21/2"
FIG. 2-3
Header bracket mounting (on header &
above header)
.
Door springs are under high tension. If spring or
its shaft is in the way, measure 2-1/2" above
spring or shaft on the garage door centerline and
mark this height as your location for header
bracket.
Do NOT move door spring!
WARNING