Craftsman 139.53978SRT owner manual Installation Section Pages 12 Installation Step, Proceed to

Installation Section: Pages 12 - 27

Installation Step I

Determine Header Bracket Location

Installation procedures vary according to garage door types. Follow the instructions which apply to your door.

__

	Vedical
__ Header __	Guideline
Wall

2x4

Finished __

Ceiling

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 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.

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•Open your door to the highest point of travel as shown. Draw

an intersecting horizontal line on the header wall 2" 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.

	Supports		• 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 onlyif
			a torsion spring or center bearing
.Vertical			plate is in the way; or you can attach
			it to the ceiling (refer to page 14)
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			when clearance is minimal. (It may
			be mounted on the wall upside down
			if necessary, to gain approximately
			1/2".)
			/f 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.
	Ceiling
	Header
2	wall	Track	Header
I_'*_High t'Point			Track

of Travel

Highest Point

of Travel

DOOr

Sectional	door	One-piece door
with curved	track	with horizontal track

Proceed to Step 2, page 14.

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