Operation CHARM: Car repair manuals for everyone.

Drive Belt: Adjustments

Deflection Method:

Alternator Belt Adjustment:




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

Deflection: 11-13.5 mm (0.43-0.53 in)

NOTE: On a brand-new belt, the deflection should be 6-8 mm (0.24-0.31 in) before the belt has had any running time on the engine.

2. If belt deflection is incorrect, loosen the adjustment-lock nut and the mounting bolt.
3. Turn the adjusting bolt until belt deflection is correct, then retighten the nut and bolt.
4. Recheck the belt tension.

Tension Gauge Method:

Alternator Belt Adjustment:




1. Attach the belt tension gauge to the belt, and measure belt tension.

Tension: 450 - 650 N (45 - 65 kgf, 99 - 143 lbf)

NOTE: On a brand-new belt, the tension should be 900 - 1100 N (90 - 110 kgf, 198 - 243 lbf) before the belt has had any running time on the engine.

2. If belt tension is incorrect, loosen the adjustment lock nut and the mounting bolt.
3. Turn the adjusting bolt until belt tension is correct, then retighten the nut and bolt.
4. Recheck the belt tension.