Installation Section: Pages 8 – 20
Installation Step 1
Determine Header Bracket Location
WARNING
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 23). 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 garage door service.
| Vertical | Finished | |
| Ceiling | ||
Header | Guideline | ||
| |||
Wall | 2x4 | Structural | |
| |||
|
| Supports |
Vertical
Guideline
•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 to 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 9) when clearance is minimal.
If you need to install the header bracket on a 2x4 (on wall or ceiling), use lag screws (not supplied) to securely fasten the 2x4 to structural supports as shown here.
•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.
Ceiling
Header
Wall
2" Track
Highest Point
of Travel
Door
Proceed to Step 2, page 9.
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