Connect The Door Arm To The Trolley - Craftsman 139.53920DM Owner's Manual

ALLONE-PIECE DOORS
1. Assemb/ethe door arm, Figure5:
IMPORTANT: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.
• Securewith 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 dooradjustment: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. Onefull turn equals 2" (5 cm) of trolley travel.
• Closeddoor 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
Inner Trolley Outer Trolley
I _ Emergency Release Handle
F Closed Door
InnerTrolley
Figure5
CORRECT INCORRECT
Door Bracket
_/16 'ing Fastener
Lock Nuts
Washers 5/16"-18
. \ I_!l
Clevi_ Pin
AStr ig ht fJ'- \ III
5/16"x1-1/4'
,_ :--_4_,._%e.©j /]
Bolts
__ CUo_red
5/16"-18x7/8" 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. One full turn equals
2" (5 cm) of trolley travel.
3. Connectthe door arm to the tro//ey:
• 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.
• Runthe opener through a complete travel cycle. If the door
has a slight "backward" slant in full open position as shown in
the illustration, decreasethe UP limit until the door is parallel
to the floor.
NOTE: Whensetting the up limit on the following page, the door
should not havea "backward" slant when fully open as illustrated
below. A slight backward slant will cause unnecessary bucking
and/or jerking operation as the door is being opened or closed
from the fully open position.
Outer Trolley
Open Door
26
Backward Slant
(Incorrect)