If the brake lining on the drive is thinner than permitted, then the brake rotor must be replaced.

The pictures show the procedure on a GM 1000 modular wire rope hoist. The procedure on GM 800 does not differ significantly from this.

   Pull the fan cover off to the rear.

   Unscrew the fillister-head screws (3x).

   Pull the magnet body off the drive from the rear.

   Pull the brake rotor from the hub.

   Put new brake rotor onto the hub.

   Insert magnet body.

   Tighten the magnet body with fillister head screws M4x45 (3x). 2.5 Nm.

   Attach the fan cover.