Diesel engine: The tension of the individual V-ribbed belts is checked by thumb pressure.
The increased belt tension leads to its rapid wear and failure. If the tension is too high, the bearings in the respective units can be damaged.
Status check
Pay attention to the following damage:
Traces of oil and grease.
Side wear: Ribs become sharper (IN); the new ribs should be in the shape of a trapezoid.
Cord threads are visible at the base of the ribs, which is determined by lighter places (WITH).
Transverse cracks (D) on the back of the belt.
Some ribs are peeling off (E).
Notches on outer ribs (F).
The warp threads come out from the side (G).
Transverse cracks (H) on multiple ribs.
Absence of rib sections (J).
Cracks on individual ribs (TO).
Dirt and foreign objects between the ribs.
Swelling of the rubber at the base of the ribs.
If such defects are found during visual inspection, then the V-ribbed belt must be replaced.