Craftsman 139.18057 Owner's Manual

24To prevent damage to garage door, reinforce inside ofdoor with angle iron both vertically and horizontally.INSTALLATION STEP 11Fasten the Door BracketFollow instructions which apply to your door typeas illustrated below or on the following page.A horizontal reinforcement brace should be longenough to be secured to two vertical supports. Avertical reinforcement brace should cover theheight of the top panel.The illustration shows one piece of angle iron as thehorizontal brace. For the vertical brace, two pieces ofangle iron are used to create a "U"-shaped support(Figure 1). The best solution is to check with yourgarage door manufacturer for an opener installationdoor reinforcement kit.NOTE: Many vertical brace installations provide fordirect attachment of the clevis pin and door arm. Inthis case you will not need the door bracket; proceedto Installation Step 12.SECTIONAL DOORS• Center the door bracket on the previously markedvertical centerline used for the header bracketinstallation. Note correct UP placement, asstamped inside the bracket (Figure 2).• Position the bracket on the face of the door withinthe following limits:A) The top edge of the bracket 2"-4" (5 cm - 10 cm)below the top edge of the door.B) The top edge of the bracket directly below anystructural support across the top of the door.VerticalCenterlineDoorBracketLocationHeader BracketHorizontal and vertical reinforcementis needed for lightweight garage doors(fiberglass, aluminum, steel, doors withglass panel, etc). (Not Provided)UPDoor BracketInside Edgeof Door orReinforcement Board DoorBracketNut5/16"-18Carriage Bolt5/16"-18x2-1/2"Lock Washer5/16"VerticalCenterlineUPVerticalReinforcementCarriage Bolt5/16"-18x2-1/2"Nut 5/16"-18 Lockwasher 5/16"HARDWARE SHOWN ACTUAL SIZEFigure 1Figure 2• Mark and drill 5/16" left and right fastening holes.Secure the bracket as shown in Figure 1 if there isvertical reinforcement.If your installation doesn't require vertical reinforce-ment but does need top and bottom fastening holesfor the door bracket, fasten as shown in Figure 2.WARNINGCAUTION