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Tractor Talk Discussion Forum

430 W JOHNDEERE electrical problem.

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R.M.E. in G

10-16-2004 17:32:15




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Somebody please help...I am having problems with the charging system on my 430w.The tractor still has the 6 volt positive ground setup....I have a new battery,the generator has been checked by a generator shop,it is in good shape puts out approx 7.2 volts. My problem is that I am unable to get the system to charge...I have somehow managed to zap 2 voltage regulators,I am hooking the wires up as they were on the old regulator.....also I have checked the wiring diagram in a J.D. shop manual,my wiring hook up is the same....the wiring harness on my tractor has not been cut/hacked up as you sometimes find on old tractors now,This problem has me in a blubbering fit .....if anyone has any ideas I would be very thankful for your help....oh by the way,I have both times made sure I polarized the system before starting up the tractor.

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OGGIE

10-16-2004 18:39:53




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 Re: 430 W JOHNDEERE electrical problem. in reply to R.M.E. in GEORGIA., 10-16-2004 17:32:15  
Are you sure it's positive ground?



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Bob

10-16-2004 18:38:51




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 Re: 430 W JOHNDEERE electrical problem. in reply to R.M.E. in GEORGIA., 10-16-2004 17:32:15  
The tractor would have been positive ground originally. Are you sure you have it hooked up that way now? (If the battery has even been completely discharged, it is possible that someone has charged it with reverse polarity. Yes, that can happen!)

(If the generator shop is "on the ball", they will have polarized the generator for that ground polarity.)

Also, you need to polarize the newly-installed generator BEFORE initial startup of the engine.

It is very important that the generator be grounded to the engine, and that the regulator be grounded, also. Too much paint on mounting surfaces and bolts, or a rubber grommet-mounted regulator missing it's ground strap can interfere with grounding.

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