Determine The Header Bracket Location; Sectional Door - Craftsman 139.53491SRT Owner's Manual

INSTALLATION SECTION" PAGES 12- 27
Installation Step 1
Determine Header Bracket Location
Installation procedures vary according to garage
door types. Follow the instructions which apply to
your door.
Header
Wall
Vertical Finished
Guideline Ceiling
2x4
Structural
If the header bracket is not rigidly fastened to a
structural support on the header wall or ceiling, the
safety reverse system may not work properly (see
page30). The doormightnot reverse whenrequired,and
couldcauseseriousinjuryor death.
The garagedoor springs,cables,pulleys,bracketsand
theirhardwareareunderextremetension.Do notattempt
to loosen, move or adjust them yourself. Serious
personal injury or death could result. Call for
professional g aragedoor service.
SECTIONAL Door or
ONE PIECE Door with Track
Ceiling
Header
Wall
,,............ 3" Track
I
Highest Point
of Travel
Door
Highest Point
of Travel
• Close the door and mark the inside
vertical centerline of the garage door.
• Extend the line onto the header wall
above the door.
Remember, you can fasten the header
bracket within 2 feet of the left or right
of the door center only if a torsion
spring or center bearing plate is in the
way; or you can attach it to the ceiling
(refer to page 14) when clearance is
minimal. (It may be mounted on the
wall upside down if necessary, to gain
approximately 1/2".)
If you need to install the header bracket on
a 2x4 (on waft or ceiling), use lag screws
(not supplied) m securelyJasten the 2x4 m
structural supports as shown here and on
page 13.
• Open your door to the highest point of
travel as shown. Draw an intersecting
horizontal line on the header wall 3"
above the high point. This height will
provide travel clearance for the top edge
of the door.
Door clearance brackets are available
for sectional doors when headroom
clearance is less than 2". See accessory
page 38.
Proceed to Step 2, page 14.
Sectional door
with curved track
One-piece door
with horizontal track
12