Sonata V6-3.0L (1991)
4. Remove the crankshaft pulley from the crankshaft and the upper and lower timing belt covers.
5. Loosen the timing belt tensioner bolt and turn the timing belt tensioner counterclockwise along the elongated hole.
6. When the timing belt is to be reused, mark the direction of travel with an arrow before removing it.
INSPECTION
1. Closely inspect the belt. If problems are evident, as shown in images, replace the belt with a new one.
(1) Hardened back, or glossy surface rubber. The belt non-elastic and so hard that even if a finger nail is forced into it, no mark is produced.
(2) Cracked surface rubber.