Daktronics Pro Series Operations and Maintenance Manual - Manual (Page 108)

MAINTENANCE 101
VORTEK HOIST BRAKE ADJUSTMENTS
Occasionally the secondary mechanical brake may
need some minor adjustment to alleviate noise that
could occur.
Remove the Locknut from here, and
allow cover to swing down.
The motor cover will need to be opened up so that the
brake can be adjusted. What will be seen is shown in
the picture to the left.
The locknut on the secondary
mechanical brake is what will be
adjusted.
To adjust the brake, loosen the locknut on the gearbox
shaft until the Bronze Bearing and the Belleville Washer
spin with a small amount of finger pressure.
Run the hoist DOWN approximately two feet so that
the secondary brake is engaged and then tighten the
locknut to 70 Inch/pounds with a Torque wrench.
Run the hoist down and check for noise. If there is still
noise, tighten the nut 1/8 of a turn and then run the
hoist down again. Repeat until the noise has ceased.
Do not tighten the nut to where there
is no more adjustment available.
Bronze Bearing Belleville Washer