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

   Unscrew the rib screw M8x12 (2x) on both sides of the belt guard.

   Slew the belt guard past the wheels and remove it from the top.

   Inspect the ribbed drive belt carefully and check for any damage.

Examples of damage:

─     There must not be any cracks.

─     No threads may protrude from the side of the ribbed drive belt.

─     No threads may be visible in the valleys.

   If the ribbed drive belt is damaged: Replace the ribbed drive belt. See Replacing the ribbed drive belt and tension rollers.

   Inspect the tension rollers (2x). They must not exhibit any damage and must be easy to turn.

   The outer wheel flanges on the tension rollers must not exhibit any damage.

   Inspect the bolt and SL safety clips. The bolts must be in place and be secured with SL safety clips.

   Inspect the tension springs (2x). Both tension springs must be in place and may not be broken or deformed.

   If components are missing or damaged: Replace the components. See Replacing the ribbed drive belt and tension rollers.

   Attach the belt guard from above and slew it past the wheels.

   Fit the belt guard onto the trolley frame.

   Tighten belt guard with rib screws M8x16. 25 Nm.