Alternator: Adjustments

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 98 N (10 kg, 22 lb), and measure the deflection between the alternator and crankshaft pulley.

Deflection:
Used Belt: 8.5 - 11.5 mm (0.33 - 0.45 in)
New Belt: 5.5 - 8.0 mm (0.22 - 0.31 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 kg, 77 - 110 lb)
New Belt: 690 - 880 N (70 - 90 kg, 150 - 200 lb)

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

If adjustment is necessary:

1. Loosen the mounting nut and the locknut.




2. Move the alternator to obtain the proper belt tension, then retighten the nuts.
3. Recheck the deflection or tension of the belt.