Install The Door Bracket - Chamberlain 8550 Manual

Installation
8

Install the door bracket

Fiberglass, aluminum or lightweight steel garage doors WILL REQUIRE reinforcement BEFORE
installation of door bracket. Contact your door manufacturer for reinforcement kit.
Figure 1 shows one piece of angle iron as the horizontal
brace. For the vertical brace, 2 pieces of angle iron are
used to create a U-shaped support. The best solution is to
check with your garage door manufacturer for an opener
installation door reinforcement kit.
NOTE: Many door reinforcement kits provide for direct
attachment of the clevis pin and door arm. In this case you
will not need the door bracket; proceed to the next step.
8.1
Center the door bracket on the previously marked vertical centerline used for the header bracket
installation. Note correct UP placement, as stamped inside the bracket.
8.2
Position the top edge of the bracket 2"-4" (5-10 cm) below the top edge of the door, OR directly below
any structural support across the top of the door.
8.3
Mark, drill holes and install as follows, depending on your door's construction:
Metal or light weight doors using a vertical angle iron brace between the door panel support and
the door bracket:
• Drill 3/16" fastening holes. Secure the door bracket using the two self threading screws (H10).
(Figure 2)
• Alternately, use two 5/16" bolts, lock washers and nuts (not provided). (Figure 3)
Metal, insulated or light weight factory reinforced doors:
• Drill 3/16" fastening holes. Secure the door bracket using the self-threading screws (H10).
(Figure 4)
Wood Doors:
• Use top and bottom or side to side door bracket holes. Drill 5/16" holes through the door and
secure bracket with 5/16"x2" carriage bolts, lock washers and nuts (not provided). (Figure 5)
NOTE: The 1/4"-14x5/8" self-threading screws are not intended for use on wood doors.
A horizontal and vertical reinforcement is
needed for lightweight garage doors
(fiberglass, aluminum, steel, doors with glass
panel, etc.) (not provided).
A horizontal reinforcement brace should be
long enough to be secured to two or three
vertical supports. A vertical reinforcement
brace should cover the height of the top panel.
HARDWARE
FIGURE 2
H10 (2)
Self-Threading Screw
1/4˝-14x5/8˝
12
Vertical
Reinforcement
Vertical
Centerline
of Garage Door
UP
Door
Bracket
H10
FIGURE 4
Vertical
Centerline
of Garage
Door
UP
H10
FIGURE 1
FIGURE 3
Vertical Reinforcement
Vertical
Centerline
of Garage Door
Bolt
5/16"-18x2"
(Not Provided)
UP
Door
Bracket
Lock Washer
5/16"
Nut
5/16"-18
FIGURE 5
Bolt 5/16"x2"
Inside Edge
(Not Provided)
of Door or
Reinforcement Board
UP
Vertical
Centerline
of Garage
Door