Harrington Hoists and Cranes TNER Theater Hoist - Manual (Page 28)

6.2.3 Brake Gap (G) - The Brake Gap should be measured between the Brake Drum and Pull Rotor. Adjustment
of the Brake Gap is accomplished by turning the Adjustment Nut in the center of the Motor Cover as shown
in the figure with Table 6-1. Do this as follows:
5)
Bend the tab of the Lock Washer away from the Adjusting Nut so that the Adjusting Nut can be rotated.
6) Using a spanner wrench and a feeler gauge, rotate the Adjusting Nut to attain the proper Brake Gap per
Table 6-1.
7) After the Brake Gap is set, secure the Adjusting Nut by bending one of the tabs of the Lock Washer into a
slot in the Adjusting Nut. If necessary rotate the Adjusting Nut clockwise (tightening) to line up the tab with
the slot.
8) If the proper brake adjustment cannot be achieved, disassemble the motor brake and inspect all motor
brake parts. Replace the Brake Drum and/or Motor Cover if necessary.
28