Sonata GL V6-2.5L (1999)
1. Hardened back surface rubber Back surface glossy. Non-elastic and so hard that even if a finger nail is forced into it, no mark is produced.
2. Cracked surface rubber
3. Side of belt badly worn
NOTE: A belt in good condition should have clear-cut sides as if cut with a sharp knife.
4. Badly worn teeth
Initial stage:
Canvas on the load side of the tooth flank worn (fluffy canvas fibers, rubber gone and color changed to white, unclear canvas texture)
Last stage:
Canvas on the load side of the tooth flank worn down and rubber exposed (tooth width reduced)
5. Missing tooth
2. If backlash or an irregular noise is observed when rotating the pulley, replace the timing belt tensioner and Idler pulley.
