Opened up my dead alternator - Ranger-Forums - The Ultimate Ford Ranger Resource

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Old 10-08-2008
Thread Starter
Join Date: Oct 2007
Location: British columbia
Posts: 6
Opened up my dead alternator

Hey Guys,

My alternator bit the dust on my 2002 the other week. I pulled it apart and I thought it would be interesting to show what I found.

Sorry for the crappy quality pictures.... there from my phone.

It seems like the arm shifted in the case ... maybe due to a worn bearing or something. The cooling fins were making contact with the case.... and im not sure but maybe it was grounding out?

So this picture shows the wear marks from the cooling fins hitting the case

This is supposed to show how much the fin was chewed up

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Old 10-08-2008
oldfart's Avatar
Join Date: Sep 2008
Location: Virginia
Posts: 120
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Old 10-08-2008
Join Date: Nov 2005
Location: Elizabeth City, NC
Posts: 767
Means the bearings are shot.
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Old 11-01-2008
97ranger xlt's Avatar
Join Date: Feb 2007
Location: Mass.
Posts: 459
interesting pics

i just replaced the original on my '97.. dry bearings too

guess they don't make 'em like they used to
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Old 11-04-2008
optikal illushun's Avatar
Join Date: Oct 2004
Location: Coal Region, MTC to be exact...heart of the coal region.
Posts: 2,232
here are some more pics of a 3G apart:
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Old 11-04-2008
Liftedgreen4x4's Avatar
Join Date: Jan 2008
Location: lorton,virginia
Posts: 447
Thats wild. I'm pretty sure I have the original alt. in my truck still
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