Torque Adjustment; Brake Adjustment - Chamberlain GT Owner's Manual

TORQUE ADJUSTMENT

1. Loosen set screws of torque adjustment nut on the gear
reducer.
2. Back off toque nut until there is very little tension on the
belleville washers.
3. Tighten torque nut gradually until there is just enough tension
to permit the operator to move the door smoothly through a
complete open/close cycle, but to allow the reducer to slip if
the door is obstructed.
4. Re-tighten the set screw that is directly over the flat portion of
the shaft.

BRAKE ADJUSTMENT

A solenoid brake is standard on GT operators. The brake is
adjusted at the factory and should not need additional adjustment
for the the life of the friction pad.
Replace brake assembly when necessary. Refer to the illustration
for identification of components for the solenoid type brake
system.
A D J U S T M E N T
Solenoid
11
Torque Nut
Set Screws
Brake
Assembly
Brake Plate
Assembly
Release Lever