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10.4.8.3 Changing/tensioning the drive belt
Fig. 56 Changing/tensioning the drive belt
I
Alternator drive belt
1
Alternator
2
Tensioning device
3
Hexagon screw (securing screw)
4
Hexagon screw (securing screw)
5
Hexagon screw (securing screw)
6
Hexagon screw (setting screw)
+ Increase tension
− reduce tension
II
Fan drive belt
7
Tension disk
8
Tensioning frame
8.1
Tensioning frame eye
9
Hexagon screw (tensioning screw)
10
Hexagon screw (securing screw)
11
Fan disk
Tensioning the fan drive belt:
1. Loosen the tensioning frame securing screw and clamping screw.
2. Use a suitable tool to pull the tensioning frame at its eye outward until the belt is tensioned.
3. Re-tighten the securing screw and clamping screw.
4. Check the belt tension (see Fig. 55, II).
Belt tension too low: Pull the eye further outward.
Belt tension too high: Slightly turn the tensioning frame inward.
Tensioning the alternator drive belt:
The drive belt is tensioned via the screw fastening of the alternator.
1. Loosen the securing screws of the alternator.
2. Use the setting screw to move the alternator outward (⃕+) until the drive belt is tensioned.
3. Tighten the securing screws.
10 Maintenance
10.4 Engine maintenance
124
Operator Manual Screw Compressor
M114 SIGMA CONTROL SMART
No.: 901765 05 USE