10.4.8.4 Replace the drive belt
Fig. 55 Replace the drive belt.
1
Belt guard (pushed to the side)
2
Drive belt
3
Fan casing
4
Service opening (without cover)
5
Fan
6
Fan guard
Preparation:
➤ Remove the cover of the service opening at the fan casing.
Pulling off and removing the drive belt:
1. Loosen the alternator securing screw and clamping nut until the drive belt can be taken off the
pulleys.
2. Pull off the drive belt and push it through the fan guard opening into the fan casing space.
3. Lift the drive belt over the fan blades and remove it through the service opening from the fan
casing.
4. Check the pulleys for dirt and wear.
Dirty pulley: Clean pulley.
Worn pulley: Have the pulley changed.
Installing a drive belt:
1. Push the new drive belt through the service opening of the fan casing and lift it over the fan
blades.
2. Push the drive belt through the fan guard opening in direction of the belt pulleys.
3. Manually route the drive belt over the pulleys without using force.
4. Tension the drive belt. Ensure that the drive belt is correctly positioned in its guide.
A belt that has been replaced may not be used again.
After running for two to three hours, check the belt tension again.
10 Maintenance
10.4 Drive engine maintenance
No.: 901779 08 USE
Operator Manual Portable Rotary Screw Compressor
MOBILAIR M58utility SIGMA CONTROL SMART
125