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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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Re: Cockshutt Alternator Issue

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Roger Gillen

04-20-2013 17:31:41

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Those alternators if let set for a time will lose their excitation and need to be excited again. It is an easy thing to do. My 30 with the same alternator does the same thing when it sets over the Winter with out running. I will check tomorrow on the procedure how to excite the alternator again, it is just a matter of jumping one terminal to another on the alternator, but the information is out in the shop.
Call me at 419-343-3678

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Jon Hagen

04-21-2013 18:17:40

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 Re: Cockshutt Alternator Issue in reply to Roger Gillen, 04-20-2013 17:31:41  
To excite a Delco SI series "one wire" alternator, jumper from the rear BAT stud to the regulator blade marked #1 on the rear of the alt case. Do this with the engine running atleast 1000 rpm.

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04-21-2013 01:23:47

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 Re: Cockshutt Alternator Issue in reply to Roger Gillen, 04-20-2013 17:31:41  
Tell us more. Every alternator I have come across has been excited by current through the rotor, simple as that.

Now, a DC generator (dynamo) is different and needs exciting if the polarity has been changed, or very occasionally if the magnetism has been lost (never had to do one myself).

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