Sears 139.53960SRT, 139.53968SRT Assemble the door arm, Figure, Adjustment procedures, Figure

ALL ONE-PIECE DOORS

1.Assemble the door arm, Figure 4:

•Fasten the straight and curved door arm sections together to the tongest possible length (with a 2 or 3 hole overlap).

•With the door closed, connect the straight door arm section to the door bracket with the

5/16"xl -1/4" clevis pin.

•Secure with a ring fastener.

2.Adjustment procedures, Figure 5:

On one-piece doors, before connectingthe door arm to the trolley,the travel limits must be adjusted. Limit adjustment screws are located on the left side panel as shown on page 28. Follow , adjustment procedures below.

•Open door adjustment: decrease UP travel limit

-Turn the UP limit adjustment screw counter- clockwise 5 1/2 turns.

-Press the Door Control push button. The trolley will travel to the fully open position.

-Manually raise the door to the open position (parallel to the floor), and lift the door arm to the trolley. The arm should touch the trolley just in back of the door arm connector hole. Refer to the fully open trolley/door arm positions in the illustration. If the arm does not extend far enough, adjust the limit further. One full turn equals 2" of trolley travel.

•Closed door adjustment: decrease DOWN travel limit

-Turn the DOWN limit adjustment screw clockwise 5 complete turns.

I	FULLY CLOSED POSITION
	Inner Trolley	Outer Trolley

Door Bracket		_	Ring
			Fastener
				Nuts
			Lock	5/16"-16
			5/16"
Clevis	Pin	Arm
			Washers
rigi=_:-ur-	4		5/16"-18x7/8	Curved Door Arm

-Press the Door Control push button. The trolley will travel to the fully closed position.

-Manually close the door and lift the door arm to the trolley. The arm should touch the trolley just ahead of the door arm connector hole. Refer to

the fully closed trolley/door arm positions in the illustration. If the arm is behind the connector

hole, adjust the limit further. One full turn equals 2" of trolley travel.

3.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 may be 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 position as shown in the illustration, decrease the UP limit until the door is parallel to the floor.

FULLY OPEN POSITION

Outer Trolley

Door Arm

Figure 5

27