Drive Belt: Testing and Inspection

Alternator Belt Inspection And Adjustment

NOTE:
When using a new belt, first adjust the deflection or tension to the values for the new belt, then readjust the deflection or tension to the values for the used belt after running engine for five minutes.

Deflection method :
Apply a force of 98N (10 kgf, 22 lbf), and measure the deflection between the alternator and crankshaft pulley.

Deflection
Used Belt : 8.5 - 11.5 mm (0.33 - 0345 in)
New Belt : 5.5 - 8.0 mm (0.22 - 0361 in)


NOTE:
If the belt is worn or damaged, replace it.





Belt tension gauge method :
Attach the belt tension gauge to the belt and measure the tension. Follow the gauge manufacturer's instructions.

Tension
Used Belt : 340 - 490 N (35 - 50 kgf, 77 - 110 lbf)
New Belt : 690 - 880 N (70 - 90 kgf, 150 - 200 lbf)


NOTE:
If the belt is worn or damaged, replace it.





If adjustment is necessary :
1. Loosen the adjusting bolt(A) and the lock bolt(B).
2. Move the alternator to obtain the proper belt tension, then retighten the nuts.




3. Recheck the deflection or tension of the belt.