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Garden Tractors Discussion Forum

Re: John Deere 322 charging system

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El Toro

01-06-2013 08:44:11

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Which engine do you have? If it's a Kohler it may have a stator that produces Ac voltage and you would also have a rectifier/regulator to convert the AC to DC volts. You can use a volt meter set on AC volts and with the engine at 1/2 throttle or better you can measure the ac output voltage off the stator should be about 30 volts.
If that looks ok switch your meter to Dc volts and measure that. Be careful working around that engine. You can measure the DC volts across the battery terminals, should see around 14 volts. If you only have 12 volts your rectifier is probably defective.. Hal

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01-06-2013 19:31:37

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 Re: John Deere 322 charging system in reply to El Toro, 01-06-2013 08:44:11  
Thank you. It is a 3 cylinder, either a Yanmar or Kawasaki I believe. I suppose it could be dusty and dirty connections because it was really dirty chopping and bagging leaves and worked fine for several hours.

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El Toro

01-07-2013 05:25:56

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 Re: John Deere 322 charging system in reply to jd730gas, 01-06-2013 19:31:37  
You should check with your local JD dealer to see if they will scan a copy of the wiring diagram on your charging system. If it has an alternator you should have a rectifier. It may just be a loose wire or a bad connection. I had a JD 140 that wouldn't charge and it just needed the terminals cleaned on the rectifier. Hal

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