Prelude L4-2056cc DOHC (1990)
Alternator: Customer Interest
Engine - High Pitched Noise
Bulletin No.
91-005
Issue Date
NOV 15, 1991
Model
1988-91 PRELUDE
Applicable To
Si
File Under
ELECTRICAL
Alternator Bearing Noise (Supersedes 91-005, dated September 6, 1991)
SYMPTOM
A high-pitched squealing noise coming from the engine compartment.
PROBABLE CAUSE
Worn front bearing in the alternator.
DIAGNOSIS
Remove the alternator belt, as described in the appropriate service manual. Start the engine, and if the noise is eliminated, proceed to CORRECTIVE
ACTION.
CORRECTIVE ACTION
Replace the front bearing with the bearing listed under PARTS INFORMATION.
1.
Remove the alternator from the vehicle as described in section 23 of the service manual.
2.
Remove the pulley locknut and pulley from the alternator.
3.
Remove the three 5 mm flange nuts, heat shield, and three 5 mm special nuts from the alternator.
