Chamberlain 81600 Manual page 18

Installation
9 Connect the Door Arm to the Trolley
IMPORTANT: The groove on the straight door arm MUST face away from the curved door arm.
1. T-Rail: Close the door. Disconnect the trolley by pulling the emergency release handle.
Slide the outer trolley back (away from the door) about 2" (5 cm).
Square Rail: Close the door. Disconnect the trolley by pulling the emergency release
handle.
2. Attach the straight door arm to the outer trolley using the clevis pin. Attach with the ring
fastener.
3. Attach the curved door arm to the door bracket using the clevis pin. Attach with the ring
fastener.
4. Align the straight door arm with the curved door arm. Select two aligned holes (as far apart
as possible) and attach using the bolts, nuts and lock washers.
NOTE: If the holes do not line up, reverse the straight door arm. Select two aligned holes (as
far apart as possible) and attach using the bolts, nuts and lock washers.
5. Pull the emergency release handle toward the garage door opener until the trolley release
arm is horizontal. The trolley will re-engage automatically when the garage door opener is
activated.
Hex Bolt 5/16"-18 x 7/8"
Lock Washer 5/16"
Nut 5/16"-18
Straight
Door Arm
Curved
Door
Arm
(Groove
facing out)
CORRECT
HARDWARE
Clevis Pin 5/16" x 1-1/4"
Clevis Pin 5/16" x 1"
Ring Fastener
Straight
Door Arm
Curved
Door
Arm
INCORRECT
FOR T-RAIL
Ring Fastener
Nut 5/16"-18
Lock
Washer
5/16"
FOR SQUARE RAIL
Ring Fastener
Nut
Clevis Pin
5/16"x1-1/4"
Unattended Operation
The Timer-to-Close (TTC) feature, the myQ® App, and myQ® Garage Door and Gate Monitor are
examples of unattended close and are to be used ONLY with sectional doors. Any device or feature
that allows the door to close without being in the line of sight of the door is considered unattended
close. The Timer-to-Close (TTC) feature, the myQ® App, and any other myQ® devices are to be used
ONLY with sectional doors.
18
Clevis Pin
5/16" x 1"
Hex Bolt
5/16"-18 x 7/8"
Clevis Pin 5/16" x 1-1/4"
Clevis Pin
Lock Washer
5/16"x1"
Hex Bolt