Connect The Door Arm To The Trolley - Craftsman 139.53902D Owner's Manual

ALL ONE-PIECEDOORS
1. Assembte the door arm, Figure 5:
NIPORTANT:Thegroove on the straight door arm MUST face
away from the curved door arm.
= Fastenthe straight and curved door arm sections together to
the longest 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"x1-1/4" clevis pin.
= Secure with a ring fastener.
2. Adjustmentprocedures, Figure 6:
• On one-piece doors, before connecting the 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 27. Follow adjustment procedures below.
• Open door adjustment: decrease UP travel limit
- Turn the UP limit adjustment screw counter-clockwise 4
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" (5 cm) of trolley
travel.
• Closed door adjustment: decrease DOWNtravel limit
- Turn the DOWNlimit adjustment screw clockwise 4
complete turns.
- Press the Door Control push button. The trolley will travel to
the fully closed position.
Figure 6
Figure 5
CORRECT iNCORRECT
Door
Bracket
Clevis Pin Straight
5/16"x1-1/4" Arm
Fastener
Bolts
5/16"-18x7/8
Lock
Washers
5/16"
Nuts
5/16"-18
Curved
Door Arm
- 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. Onefull turn equals
2" (5 cm) 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.
NOTE: When setting the up limit on the foflowing page, the door
should not have a "backward" slant when fully open as illustrated
below. A slight backward slant will cause unnecessarybucking
and/or jerking operation as the door is being opened or closed
from the fully open position.
lley Outer Trolley Closed
__ _ Door
Door Arm ------_[,_Li _ ___
% Emergency
I Release Handle
___ Closed
Door
Inner Trolley
Backward Slant
Open Door (incorrect)
26