Checking The V-Belt - Vetus M3.28 Operation Manual

4 Maintenance
V- , . : StM7439
belt art Code
VD00034
35 Inspection V-belt
Inspect the belt for wear and tear (fraying
and cracking). Belts which are in poor
condition should be replaced.
Check, tension and change belts only
with the engine off. Refit belt guard, if
provided.
38
VD00128
36 Checking tension
Check tension of the V-belt by applying
moderate finger and thumb pressure. If
the deflection of the belt is more than
12 mm (1/2"), using about 10 kg (20 lbs)
thumb pressure, it should be tensioned.

Checking the V-belt

Every 500 operating hours.
VD00129
37 Tensioning V-belt
Loosen the bolt of the adjustment bracket
and both the alternator mounting bolts.
Now push the alternator outwards until the
belt tension is correct.
Now first re-tighten the upper mounting
bolt of the alternator.
Then re-tighten the bolt of the adjustment
bracket and the lower mounting bolt.
12 14