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Tractor Talk Discussion Forum

8N woes continue...

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ld5030

08-13-2006 16:54:48




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Made a post Friday about my 8N not turning over after running fine for 30 minutes or so... old and Maark were kind enough to reply with suggestions. Thanks, however I have not been able to get it going yet. Tried jumping across the big terminals on the solenoid and from the the small terminal to the positive on the battery (6v pos ground) even tried another starter solenoid. Took out the starter...it wasn't jammed. Cleaned the battery posts and the battery charger indicated a full charge. There is an ever so slight audible noise in the solenoid when the starter button is pushed. It was previously a stronger sound which you could feel when touching the solenoid. Ammeter now shows no draw with the key on and -5amps with the light switch on which previously was a little with the key and more with the lights. I pull started it to move it to a better spot to work on it and after a minute or two it just died like you turned the key off. Electrical systems are not my strong point, but how complicated can it be? Could there be a particular wire that got burned or otherwise damaged to cause these symptoms? I don't think there are any fuses other than the light switch. Could the voltage regulator cause any of this? Anybody got any ideas? Thanks,jim

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Rexalot

08-15-2006 08:15:26




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 Re: 8N woes continue... in reply to ld5030, 08-13-2006 16:54:48  
I had problems with my 871, first the positive battery cable "burnt" right of the battery post after a few cranks of the engine.

replaced it with a new one from the local auto parts store. Had exactly what you described, "click", then the light on the tractor dash (for the generator) would go out. Taking the cable off the battery post and putting it on would reset everything.

Tried jumping across the solenoid, and even putting voltage right to the starter. No help.

I figured starter bad (brushes or armature shorted).

Had starter rebuilt, and reinstalled it. Same thing. Turn key, push button, "click" then nothing. Couldn't get anything to happen until I removed then reinstalled cable to battery. Disconnected starter cable and pushed button I could click the solenoid all day long.

Found that the battery cable I bought was junk. It wouldn't carry a load. Replaced cable and everything is good. My starter was worn out, so I did have two problems.

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coflyboy

08-14-2006 17:03:36




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 Re: 8N woes continue... in reply to ld5030, 08-13-2006 16:54:48  
The most maddening wire problems I've had were 'good looking' wires and connectors but with bad crimps on the connectors causing an open from the connector to the wire.



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BLW

08-14-2006 06:52:30




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 Re: 8N woes continue... in reply to ld5030, 08-13-2006 16:54:48  
8N prob. if you want to by pass the switch etc. put the possitive jumper on a frame et tranny bolt anywhere for gouund-- the other neg- right to the top bolt on the starter-- this will tell you if the trouble is in the starter ( it should turn fine) or if the prob is before the starter-- some probs. the ground cable to the steering column needs to make contact and also needs to be big enough-- some put 12 cable on a 6 volt system won"t work- wont carry enough juice-- put the tractor in gear switch off and rock back wheel and see if motor trys to turn( look at fan blade and see if it turns at all this will tell you if the engine has started to sieze BLW

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Jerry Cent. Mi.

08-14-2006 05:07:54




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 Re: 8N woes continue... in reply to ld5030, 08-13-2006 16:54:48  
I had the same thing happen and it turned out that one of the brushes in the starter was not contacting the armature. A few taps with a hammer freed it. I went after it with brake cleaner and it hasn't happened again.



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Bob

08-13-2006 21:17:22




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 Re: 8N woes continue... in reply to ld5030, 08-13-2006 16:54:48  
If you have the correct starter solenoid, it's small terminal is connected to chassis ground by the tranny-top safety start switch when engine cranking is desired. (Chassis ground = the (+) battery terminal.)

If you are jumpering it to the small "(-)" terminal on the battery, you might as well be &*##*&$% in the wind, as you can do that until hell freezes over, and no way is the solenoid gonna engage that way!

From your statement that the solenoid makes a wimpy sound when the starter buttin is pressed, it is fair to assume the battery is weak, and needs charging.

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in-too-deep

08-13-2006 18:19:20




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 Re: 8N woes continue... in reply to ld5030, 08-13-2006 16:54:48  
Had the same sort of thing happen to me on an AC. After trying just about everything, I left the charger on the battery over night, and the next moring it fired right up. I'm sure you've tried this, but I thought I'd mention it in case it slipped by you. Some times it's the littlest things that we overlook.



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old

08-13-2006 17:43:30




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 Re: 8N woes continue... in reply to ld5030, 08-13-2006 16:54:48  
Your ignition switch may have gone bad on you which would casue it to die like that but not have any thing to do with it not turning over. If you jumped across the big terminals on the solinoid and the starter didn't spin then I would say you need to have the started checked/replaced. You can hot wire it to see if your ignition switch is bad easty to do just run a wire from the hot side of the battery to the coil and then try to start it but if the starter will not tunr over you would have to pull it again to start it. It sounds like your starter has gone bad on you unless when you jumpered the soliniod big post you didn't get a good spark. If you didn't get a good spark you have battery/cable or connection problems

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