Installation; Determine The Header Bracket Location - Craftsman 139.53918d Owner's Manual

INSTALLATION STEP 1
Determine the Header Bracket
Location
To prevent possible SERIOUSINJURYor DEATH:
• Header bracket MUST be RIGIDLYfastened to structural
support on header wall or ceiling, otherwise garage door
might not reverse when required. DO NOTinstall header
bracket over drywall.
• Concreteanchors MUST be used if mounting header
bracket or 2x4 into masonry.
• NEVERtry to loosen, move or adjust garage door, springs,
cables, pulleys, brackets, or their hardware, all of which are
under EXTREME tension.
• ALWAYScall a trained door systems technician if garage
door binds, sticks, or is out of balance. An unbalanced
garage door might not reverse when required.
Installation procedures vary according to garage door
types. Follow the instructions which apply to your door.
1. Close the door and mark the inside vertical centerline
of the garage door.
2. Extend the line onto the header wall above the door.
You can fasten the header bracket within 4 feet
(1.22 m) 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 (see
page 13) when clearance is minimal. (It may be
mounted on the wall upside down if necessary, to
gain approximately 1/2" (1 cm).)
If you need to install the header bracket on a 2x4
(on wall or ceiling), use lag screws (not provided)
to securely fasten the 2x4 to structural supports as
shown here and on page 13.
3. Open your door to the highest point of travel as
shown. Draw an intersecting horizontal line on the
header wall above the high point:
• 2" (5 cm) above the high point for sectional door
and one-piece door with track.
• 8" (20 cm) above the high point for one-piece door
without track.
This height will provide travel clearance for the top
edge of the door.
NOTE: If the total number of inches exceeds the
height available in your garage, use the maximum
height possible, or refer to page 13 for ceiling
installation.
Header Wall
Unfinished 2x4_
Ceiling q CEILINGOPTIONALHEADERFORMOUN
Vertical Centerline
of Garage Door
2x4
Structural
/' Supports
F
Header Wall
_*=T_L_2"(5 crn) Track
Highest Point
of Travel
Door
Sectional door with curved track
_L Header Wall Track
_=="T_, 2" (5 cm)
_nt
of Travel
Y
One-piece door with horizontal track
_Wall
DOlOr _ Hight st
_Hardw,are i i_ of Travel
One-piece door without track:
jamb hardware
One-piece door without track:
pivot hardware
12