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TO ALL STARTER EXPERTS

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Tom43

01-17-2008 13:39:46

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How do you check for shorted fields in starters? An ohmeter will easily pick up an open or grounded field, but the meter is not sensitive enough to detect a short in the heavy starter windings. Likewise, I have had good luck testing generator armatures for shorts with a growler but a much harder time with the fewer,heavier windings in a starter armature.

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Mark/Wi

01-18-2008 06:28:17

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Re: TO ALL STARTER EXPERTS in reply to Tom43, 01-17-2008 13:39:46

How do you use a growler and what can you test with it. I have a growler but I am uncertain how to use it. Thanks in advance for your replies.

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Growling Groucho

01-17-2008 23:30:47

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Re: TO ALL STARTER EXPERTS in reply to Tom43, 01-17-2008 13:39:46

Link

http://www.tpub.com/content/construction/14273/css/14273_46.htm

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dave guest

01-17-2008 18:06:02

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Re: TO ALL STARTER EXPERTS in reply to Tom43, 01-17-2008 13:39:46

Good vom 20K ohms per volt sensitivity. Put on highest range. Meter from each copper bar to armature shaft. Have not seen a short in this area myself ever.. What are symptoms. If short in this area I would think commutator bars would be very burned. Not just light purple. And brushes burned, too. More common might be open commutator. Look for loose bars and solder joints burned off. Check continuity from each bar to adjacent bar. Used to use 110 volt and 50watt light buld. Could use for short testing too. BE CAREFUL this little setup can fry you. Maybe stick to VOM. That was 50 years ago.

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mattd

01-17-2008 16:24:27

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Re: TO ALL STARTER EXPERTS in reply to Tom43, 01-17-2008 13:39:46

because of the low resistance in the field windings its hard to detect a short. ive found them before by no load testing the starter and if current draw high and free speed is high then that could lead to a short in the field. but check everything else before u go replacing the field windings

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bustedknuckles

01-17-2008 14:07:19

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Re: TO ALL STARTER EXPERTS in reply to Tom43, 01-17-2008 13:39:46

I'm not an expert, but this is how I've always checked them (with a growler).

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