Have you checked the alternator output to the battery at varying RPM? 
Do you see any "black granules" around the bearing or pulley?
 
In a message dated 3/16/2008 8:51:33 A.M. Eastern Standard Time,  
[EMAIL PROTECTED] writes:

My 105K  mile '91 has a squeaky alternator. I sprayed some silicon spray on 
the end of  the pulley and the squeak stopped for a few seconds. I haven't 
investigated it  past that. I see that I can buy a "alternator drive end 
bearing" 
for $22.79  and a "alternator commutator end bearing" for $10 or a 
remanufactured  alternator for about $150 (I do have a spare or two here as 
well).

1)  Which bearing do I have that is squeaking? 
2) Do I replace the bearing,  slap one of my old alternators on, or get a 
remanu'd part? (just looking for  an opinion here)

This is my wife's car so I wouldn't really want it to  crap out on her some 
night.


-- 
Robert McElwee and Red  Beast







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