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Re: Ammeter Needle Jumping
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Posted by Bob M on March 27, 2003 at 04:56:58 from (165.170.128.65):
In Reply to: Ammeter Needle Jumping posted by RET on March 27, 2003 at 04:17:53:
A little ammeter needle vibration is normal (needle moves thru a range of a few amps). Especially if your M has a voltage regulator and the battery is fully charged it's just the regulator doing it's job. However if the needle is jumping around a lot (like 10 - 20 amps variation) there's a couple of possibilities: Could be a failing or poorly grounded voltage regulator. If regulator is OK or the tractor has a cutout, it could be worn/broken brushes or a worn generator commutator .
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