Craftsman 139.18076 Owner's Manual

Door ArmOuter TrolleyDoor ArmConnector HoleClosedDoor Open Door Door withBackward SlantDoor ArmConnector HoleOuter TrolleyDoor ArmInner TrolleyFULLY CLOSED POSITIONFULLY OPEN POSITIONNuts5/16"-18LockWashers5/16"RingFastenerStraightDoor ArmScrews5/16"-18x7/8"DoorBracket5/16"x1-1/4"Clevis PinCurved Door ArmAll ONE-PIECE DoorsAssemble the Door Arm:• Fasten the straight and curved door arm sectionstogether to the longest possible length with a 2 or 3hole overlap.• With the door closed, connect the straight door armsection to the door bracket with the 5/16"x1-1/4"clevis pin.• Secure with a ring fastener.On one-piece doors, before connecting the door arm to the trolley the travel limits must be adjusted. Limitadjustment screws are located on the left side panel as shown on page 28. Follow adjustment proceduresbelow.Adjustment Procedures for One-Piece DoorsOpen Door Adjustment:Decrease UP limit• Turn the UP limit adjustment screw counter-clockwise 5-1/2 turns.• Press the Door Control push button. The trolley willtravel to the fully open position.• Manually raise the door to the open position(parallel to the floor), and lift the door arm to thetrolley. The arm should touch the trolley just inback of the door arm connector hole. Refer to thefully open trolley/door arm positions in theillustration. If the arm does not extend far enough,adjust the limit further. One full turn equals 2" oftrolley travel.Closed Door Adjustment:Decrease DOWN limit• Turn the DOWN limit adjustment screw clockwise 5complete turns.• Press the Door Control push button. The trolley willtravel to the fully closed position.• Manually close the door and lift the door arm to thetrolley. The arm should touch the trolley just aheadof the door arm connector hole. Refer to the fullyclosed trolley/door arm positions in the illustration. Ifthe arm is behind the connector hole, adjust the limitfurther. One full turn equals 2" of trolley travel.Connect the door arm to the trolley:• Close the door and join the curved arm to the connector hole in the trolley with the remaining clevis pin. It maybe necessary to lift the door slightly to make the connection.• Secure with a ring fastener.• Run the opener through a complete travel cycle. If the door has a slight "backward" slant in full open positionas shown in the illustration, decrease the UP limit until the door is parallel to the floor.27