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HOW TO FIX A DAMAGED ALTERNATOR? 200 1991

posted by  jdl on  Sat Apr 30 07:34 CST 2005
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last visit: Mon Feb 6 11:55 CST 2012
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I have a '91 240 Bosch alternator that I momentarily shorted D+ to ground by mistake. Actually, I was trying to repair the heater tube from the manifold to air box with tin foil. The foil touched D+ for a moment, causing a small spark. The connecting wires were all in place and connected properly. Now, I'm getting 12.5V. at the battery static and the same with engine running. The warning light on the dash is not on. Can anyone tell me what I most likely damaged and the proceedure for repairing it? It's removed now, but can it be bench tested when fixed? Thanks in advance.







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HOW TO FIX A DAMAGED ALTERNATOR? 200 1991

posted by  Aztech on  Sun May 29 08:16 CST 2005
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last visit: Tue Apr 24 16:06 CST 2012
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Try swapping the voltage regulator/brush assembly located on the back end of the unit (held with two screws).








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HOW TO FIX A DAMAGED ALTERNATOR? 200 1991

posted by  sstef on  Sat Apr 30 14:56 CST 2005
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last visit: Mon Sep 1 10:40 CST 2008
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get it bench tested now at a real starter/alternator shop; they'll diagnose and repair it.
--
Stef -- 1981 245 B21A SU M46 323000km my volvo pages







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