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[TR] TR4 Generator Electrical Arcing

Subject: [TR] TR4 Generator Electrical Arcing
From: pbrandsema at triad.rr.com (pbrandsema at triad.rr.com)
Date: Fri, 30 Mar 2012 13:15:36 -0400
Has anyone had an experience with the generator (sorry, dynamo..) on a TR4, 
where electrical arcing was visible at the rear of the unit?  I wouldn't have 
noticed this ordinarily, but I happened to have the bonnet up last night to rev 
the engine and found that the higher the revs, the more arcing I see inside the 
back of the generator.  What also helped is that I had turned most of the 
lights off in the garage to keep the bugs from swarming in.  Besides a total 
failure of the charging system, my biggest fear is that if for some reason I 
had a fuel leak, the arc would not be a good thing.

Is this a sign of worn brushes?  I've always considered converting to an 
alternator, but don't have the time (or money) right now and the car has to be 
ready for a trip in 2 weeks.  Brushes are cheap and should be easy to replace.  
I just don't want to waste the time that it will take to order them if it's 
something more serious.

Thanks
Paul
61 TR4

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