Conduct a visual inspection of the drive belt condition.
Replace the belt if upon inspection you find:
- traces of wear on the toothed surface, cracks, cuts, folds and separation of the fabric from the rubber;
- cracks, folds, depressions or bulges on the outer surface of the belt;
- fraying or delamination on the end surfaces of the belt;
- traces of oil on any surface of the belt.
Warning: A belt with traces of motor oil on any of its surfaces must be replaced, as oil quickly destroys rubber. The reason for oil getting on the belt (usually due to a leak in the crankshaft seals) must be eliminated immediately.
Note: An additional sign that the accessory drive belt needs to be replaced is a characteristic whistling sound (belt slippage).
The article was borrowed from the website «chevyman.ru»