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Massey Harris & Massey Ferguson Tractors Discussion Forum
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MF235

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ernie peterson

06-13-2005 10:43:57




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Put the battery in backwards and there was a little smoke from the starter area before the terminal could be removed. No current anywhere now. Where do I start?




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devildawg(tx)

06-14-2005 21:30:14




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 Re: MF235 in reply to ernie peterson, 06-13-2005 10:43:57  
Masseys use a fusible link down by the starter solenoid. If it blows the wire will most likely be melted in two. They're designed to melt to protect like a fuse. Replacement links can be bought at the local part store.(auto or tractor)



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wmw

06-13-2005 18:44:41




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 Re: MF235 in reply to ernie peterson, 06-13-2005 10:43:57  
If the wiring is like a 255, theres a very small diode in one of the small wires going to the alternator,(on a 255 it is fairly close to the starter) It wouldn't take a second to fry it with reverse polarity. mw



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Arthur from Tassy

06-13-2005 18:24:08




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 Re: MF235 electrical problems in reply to ernie peterson, 06-13-2005 10:43:57  
Hi Ernie.
Has your tractor a alternator? reverse polarity to it does let the smoke out and a visit to the auto electrition is now needed, As when changing from a positive earth system with a generator to a negative earth system as with a alternator, nothing needs to be done to the starter motor or relay, only the ampmeter and some fuel meters need their wires swapped around on their terminals,
so its unlikely that any damage was done there. Please dont shoot the messenger!
Cheers Arthur from Tassy

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roper6365

06-13-2005 15:09:03




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 Re: MF235 in reply to ernie peterson, 06-13-2005 10:43:57  
You may have dead shorted the solenoid or the Voltage Regulator. I would check those first starting with the solenoid. If it's not either of those than The only other things are the neutral and start switches. Good luck, hope it helps



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roper6365

06-13-2005 19:58:20




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 Re: MF235 in reply to roper6365, 06-13-2005 15:09:03  
Just for kicks I looked at the 255. There is a 20amp fuse between the start switch and alternator. Mabey you got lucky and popped that before doing any more damage.

Crossing my fingers for ya, Roper



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