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CAUTION
WARNING
Header bracket must be fastened to garage
framing. Do Not fasten to drywall, particle
board, plaster or other such materials.
1.
Establish center line of door and header (Fig. 2-9).
• Close door.
• Measure door width. Mark center.
• Use straight edge to draw vertical line “V.”
– down door about 6.”
– on top of door.
– up header about 20”.
2. Determine door rise (Fig. 2-10).
• Open door to highest point of travel.
• Measure distance from top of door to floor.
• Subtract the actual height of door. The remainder
is the door rise in inches as shown in TABLE A.
• Do Not try to remove, repair or adjust springs or
anything to which door spring parts are fastened,
such as, wood blocks, steel brackets, cables or
other like items.
Repairs and adjustments must be made by a
trained service person using proper tools
and instructions.
• Handles and other door projections can catch
clothing. Remove ropes, hooks, hangers,
decorative or security items mounted to door.
• Be sure emergency release cord does not catch
on roof carrier or other vehicle parts.
4. Install header bracket (Fig. 2-11).
• Place header bracket so,
– center hole is on line “V.”
– all holes are on line “H.”
• Mark hole positions (“A” and “B”).
• Drill 5/32” holes at marked positions.
• Fasten header bracket to header with two (2)
1/4” x 2” lag screws
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.
Fig. 2-11
Line “V”
Line “H”
“A”
“B”
Header bracket
Lag screws
Vertical centerline
of door
Fig. 2-9
Top of door
See
TABLE A
Line “H”
Inside of door
Door header
Line “V”
(Vertical centerline of door)
Door rise Locate header bracket above
in inches top edge of CLOSED door
Up to 4” Up to 10”
4” to 8” 10” to 15”
8” to 12” 15” to 20”
TABLE A
Fig. 2-10
Highest point
of travel
Door rise
Highest point
of travel
Floor Floor
3. Locate header bracket (Fig. 2-9).
• Use TABLE A to determine header
bracket position.
• Draw horizontal line “H” across line “H” at
this point.
Door rise
15
2B
...
FOR TRACKLESS DOORS
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