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Fig. 59 Replace the drive belt
1
Hexagon screw (tensioning screw)
2
Hexagon screw (securing screw)
3
Drive belt
4
Fan casing
5
Service opening (without cover)
6
Fan
7
Fan guard
Removing the drive belt:
1. Remove the cover of the service opening at the fan casing.
2. Loosen the alternator securing screw and clamping nut until the drive belt can be taken off the
pulleys.
3. Pull off the drive belt and push it through the fan guard opening into the fan casing space.
4. Lift the drive belt over the fan blades and remove it through the service opening from the fan
casing.
5. 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.
Old belts should be disposed of in accordance with the latest environmental regulations.
10 Maintenance
10.4 Drive engine maintenance
142
Operator Manual Portable Rotary Screw Compressor
MOBILAIR M82 SIGMA CONTROL SMART
No.: 901783 08 USE