Craftsman 139.18076 Owner's Manual

LockWashers5/16"Nuts5/16"-18Screws5/16"-18x7/8"Cut This EndLockWashers5/16"Nuts5/16"-18Door BracketScrews5/16"-18x7/8"RingFastenerDoorBracketClevis Pin5/16"x1-1/4"CurvedDoor ArmStraightDoor ArmClevis Pin5/16"x1"Outer TrolleyTrolleyStop BoltTrolleyStop BoltTrolleyStop Bolt8" MIN. 8" MIN.8" MIN.InnerTrolleyInstallation Step 12Connect Door Arm to TrolleyFollow instructions which apply to your doortype as illustrated.Make sure garage door is fully closed. Pull the emergency release handle to disconnect the outer trolley fromthe inner trolley. Slide the outer trolley back (away from the pulley) for 8" minimum as shown below.Figure 2:• Bring arm sections together. Find two pairs of holesthat line up and join sections. Select holes as farapart as possible to increase door arm rigidity.Figure 3:• If holes in curved arm areabove holes in straightarm, disconnect straight arm. Cut about 6" fromthe solid end. Reconnect to trolley withcut enddown as shown.• Bring arm sections together.• Find two pairs of holes that line up and join withscrews, lock washers and nuts.Proceed to Adjustment Step 1, page 28. Trolley will re-engage automatically when the opener is operated.26Figure 1:• Fasten straight door arm section to outer trolleywith the 5/16"x1" clevis pin. Secure the connectionwith a ring fastener.• Fasten curved section to the door bracket in thesame way, using the5/16"x1-1/4" clevis pin.Figure 1SECTIONAL Doors OnlyLock Washer 5/16"Nut 5/16"-18 Ring FastenerHex Screw5/16"-18x7/8"Clevis Pin5/16"x1" (Trolley)Clevis Pin5/16"x1-1/4" (Door Bracket)Hardware Shown Actual SizeFigure 2Figure 3Hole Alignment Alternative