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How do you fix the alternator on a 1998 Cadillac Deville?


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Answered 2006-09-08 00:24:42

One usually does not repair these units. You will need access to a high pressure 12 ton, press to open unit for bearing replacement.. Cheaper to take unit to a electrical repair shop. If you are game, the usual problem is bearings, the diodes are fairly stable, but one can have it checked, for free, at the local auto store. If not, you will need a VOM meter, ohmeter checker, and check the each diodes, you will need to separate the diodes so you can get it into a testing arrangement. Diodes, or rectifiers, are one way valves, so when you attach the probes of VOM meter, set to the 100 ohm scale, and run a polarity test. One connection will show continuity, while a reverse polarity test should show, a open connection.

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