Fig. 51 Belt tension checking by hand
A Permissible deflection of the belt
* Approximate pressure exerted: 10 kg
Permissible movement:
10 – 15 mm
Checking belt tension with tension measuring
device.
Belt tension checking by hand
1. Check belt tension with the tension measur‐
ing device.
2.
Increase the tension on a loose belt.
Press the belts in with the thumb at the mid-
point between pulleys.
1. Check belt tension by hand (see Fig. 51).
2. Increase the tension on a loose belt.
Making operational:
1.
Replace the belt guard.
2. Reconnect the negative cable to the batteries.
3. Close the doors.
10.3.8.3 Changing/tensioning the drive belt
The drive belt is pre-tensioned by the spring force in the jockey wheel. By turning the jockey wheel
you can adjust the belt tension.
10 Maintenance
10.3 Engine maintenance
No.: 9_6974 20 E
Service manual Portable compressor
M122
105
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