Craftsman 139.53963SRT User's Manual | Page 12

Craftsman Garage Door Opener User's Manual - 139.53963SRT.
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Header

Wall

Ceiling

Track

Highest Point

of Travel

Door

Door

Track

3"

Header

Wall

Highest Point

of Travel

3"

12

Vertical

Guideline

Finished

Ceiling

Vertical

Guideline

Header

Wall

2x4

Structural

Supports

SECTIONAL Door or

ONE PIECE Door with Track

•  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 4 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 wall or ceiling), use lag screws
(not provided) to securely fasten the 2x4 to
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.

INSTALLATION SECTION:  PAGES 12 – 27

Sectional door

with curved track

One-piece door 

with horizontal track

Installation Step 1
Determine Header Bracket Location
Installation procedures vary according to garage
door types. Follow the instructions which apply to
your door.

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 
page 30). 

The door might not reverse when required, and

could cause serious injury or death.

The garage door springs, cables, pulleys, brackets and
their hardware are under extreme tension. 

Do not attempt

to loosen, move or adjust them yourself. Serious
personal injury or death could result. Call for
professional garage door service.

WARNING

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