Drive Belt: Testing and Inspection

INSPECT FAN AND GENERATOR V BELT

HINT: Use of the automatic tensioner has made tension and flexibility measurements unnecessary.

a. Check that the indicator mark on the automatic tensioner is within the A range shown in the illustration.
b. When the mark is in range B, replace the V belt with a new one.
If the result is not as specified, replace the belt.





HINT:
^ After installing the V belt, check that it fits properly in the ribbed grooves. Check with your hand to confirm that the belt has not slipped out of the groove on the bottom of the crank pulley.
^ A new belt is a belt which has been used for less than 5 minutes on a running engine.
^ A used belt is a belt which has been used on a running engine for 5 minutes or more.
^ After installing a new belt, run the engine for approximately 5 minutes and then recheck the tension.


INSPECT DRIVE BELT




a. Check the belt for wear, cracks and other signs of damage.
If any defect is found, replace the drive belt.

HINT: Replace the drive belt if any of the following defects are found:
- The belt is worn out and the wire is exposed.
- If the cracks reach the wire in more than one place.
- If the belt has chunks missing from the ribs.




b. Check that the belt is fitted properly in the ribbed grooves.

HINT: With your hand, confirm that the belt has not slipped out of the groove on the bottom of the pulley.