Inspection

INSPECTION
1. Closely inspect the belt. If the following problems are evident replace the belt with a new one.




A) Hardened back surface rubber Back surface glossy. Non-elastic and so hard that when your fingernail is pressed into it, no mark is produced.




B) Cracked back surface rubber




C) Cracked or separating canvas

NOTE: A belt in good condition should have clear-cut sides as if cut with a sharp knife.




D) Badly worn teeth (initial stage) Canvas on load side tooth flank worn (Fluffy canvas fibers. rubber gone and color changed to white, and unclear canvas texture)
E) Missing tooth




2. If backlash or an irregular noise is observed when rotating the pulley, replace the timing belt tensioner.