The condition and proper adjustment of the drive belt should be checked every 15 months or every 15,000 miles (24,000 km), whichever occurs first. Inspect belts for signs of glazing or cracking. A glazed belt will be perfectly smooth from slippage, while a good belt will have a slight texture of fabric visible. Cracks usually start at the inner edge of the belt and run outward. Replace the belt at first sign of cracking or if glazing is severe.
Proper drive belt tension adjustment is important, inadequate tension will result in slippage and wear, while excessive tension will damage the water pump and alternator bearings and cause the belt to fray and crack.
Refer to the illustrations for the proper recommended tensions.