Fastenthe Doorbracket; Sectionaldoors - Craftsman 139.536481DM Manual Del Propietário

INSTALLATION STEP 11
Fastenthe DoorBracket
Follow instructions which apply to your door type as illustrated
below or on the following page.
A horizontal reinforcementbrace shouldbe long enoughto be
securedto two vertical supports.A vertical reinforcementbrace
shouldcover the height of the top panel.
The illustration shows one pieceof angle iron as the horizontal
brace. For the vertical brace, two pieces of angle iron are used to
create a U-shaped support (Figure 1). The best solution is to check
with your garage door manufacturer for an opener installation door
reinforcement kit.
NOTE:Many vertical brace installations provide for direct
attachment of the clevis pin and door arm. In this case you will not
need the door bracket, proceed to Installation Step 12.
SECTIONALDOORS
• Centerthe door bracket on the previously marked vertical
centerline used for the header bracket installation. Note correct
UP placement, as stamped inside the bracket (Figure 2).
• Position the bracket on the face of the door within the following
limits:
A)The top edge of the bracket 2"-4" (5-10 cm) below the top
edge of the door.
B)The top edge of the bracket directly below any structural
support across the top of the door.
Fiberglass, aluminum or lightweight steel garage doors WILL
REQUIREreinforcement BEFORE installation of door bracket.
Contact your door manufacturer for reinforcement kit.
HARDWARESHOWN ACTUALSIZE
Nut 5/16"-18 LockWasher 5/16"
Carriage Bolt
5/16"-18x2-1/2"
• Mark and drill 5/16" left and right fastening holes. Securethe
bracket as shown in Figure 1 if there is vertical reinforcement.
If your installation doesn't require vertical reinforcement but does
need top and bottom fastening holes for the door bracket, fasten
as shown in Figure 2.
Door
Bracket --
Location
Header
Bracket
Vertical
Centerline
of Garage
Door
Horizontal and vertical reinforcement
is neededfor lightweight garage doors
(fiberglass, aluminum, steel,
doorswith glass panel, etc).
Vertical
Reinforcement
Carriage Bolt
5/16"-18x2-1/2"
Vertical
Centerline
of Garage
door
of Door or
Reinforcement
Door
Bracket ',
Lock Washer
5/16"
Nut
5/16"-18
FigureI
Door
Door Bracket
Plate
Figure2
23