Engine Tune-up — Drive Belts Inspection / Alternator Belt Adjustment

5-6prose procedure

Drive belt table covers Alternator, A/C Compressor and P/S belts (vehicles equipped with A/C and power steering).

Drive Belts Inspection

Drive Belts Deflection: (When applying a force of 9.8 N (10 kg, 22 lbs))

① Alternator Belt

Used Belt9-11 mm (0.35-0.43 in.)

New Belt7-9 mm (0.28-0.35 in.)

② A/C Compressor Belt

Used Belt9-11 mm (0.35-0.43 in.)

New Belt7-9 mm (0.28-0.35 in.)

③ P/S Belt

Used Belt9-12 mm (0.35-0.47 in.)

New Belt7-10 mm (0.28-0.39 in.)

1
Apply a force of 98 N (10 kg, 22 lb) and measure the deflection between the alternator pulley and the crankshaft pulley. Deflection: 9-11 mm (0.35-0.43 in.).
On a brand-new belt, the deflection should be 7-9 mm (0.28-0.35 in.) when first measured.
2
Loosen the alternator nut and through bolt.
3
Move the alternator by turning the adjust nut to obtain the proper belt tension, then retighten the bolt and nut.
4
Recheck the deflection of the belt.