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

On all four wheels:

   Turn the wheel. It must turn easily.

   Inspect the wheel. It may not exhibit any signs of damage and the surface may not exhibit any undercuts.

   Inspect the diameter. The wheel must have a minimum diameter of 128 mm at its thickest point.

   If the wheel is damaged, hard to turn, or the diameter is too small: Replace the wheel. See Replacing the wheels.