Determine The Header Bracket Location - Craftsman 139.54920 Manual Del Propietário

INSTALLATION STEP 1

Determine the Header Bracket Location

To prevent possible SERIOUS INJURY or DEATH:
Header bracket MUST be RIGIDLY fastened to structural
l
support on header wall or ceiling, otherwise garage door
might NOT reverse when required. DO NOT install header
bracket over drywall.
Concrete anchors MUST be used if mounting header bracket
l
or 2x4 into masonry.
NEVER try to loosen, move or adjust garage door, springs,
l
cables, pulleys, brackets, or their hardware, ALL of which are
under EXTREME tension.
ALWAYS call a trained door systems technician if garage door
l
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-
l
piece door with track.
8" (20 cm) above the high point for one-piece door without
l
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
Header Wall
2" (5 cm)
Highest Point
of Travel
Door
Sectional door with curved track
Header Wall
8" (20 cm)
Door
Jamb
Hardware
One-piece door without track:
jamb hardware
12
Unfinished
Ceiling
2x4
Vertical Centerline
of Garage Door
2x4
Level
(optional)
Track
Header Wall
Door
One-piece door with horizontal track
Header Wall
8" (20 cm)
Highest
Point
of Travel
Door
One-piece door without track:
pivot hardware
OPTIONAL
CEILING
MOUNT
FOR
HEADER
BRACKET
Structural
Supports
Track
2" (5 cm)
Highest Point
of Travel
Highest
Point
of Travel
Pivot