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Farmall & IHC Tractors Discussion Forum
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farmall 6 volt starter

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michael geer

07-19-2007 05:47:42




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I recently replaced the brushes on my farmall starter and when i went to try and start the tractor the starter spins extremely slow. Thought it might be the battery but now luck with a new one. Please help!!




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John-Paul T

07-19-2007 12:30:39




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 Re: farmall 6 volt starter in reply to michael geer, 07-19-2007 05:47:42  
I agree sounds like bushings. Either replace (they arent much) or redress them - IE clean them with a super fine hone (like used for wheel cylinders) so perfectly smooth and round again. Ive honed a few and never had a issue (12v ones but no diff in that). If there is a tacky gum like substance (comes from oil) on the bushing or the starters shaft it will stick. Carb cleaner or best for starters electronics cleaner (radio shack has it) removes that. I clean the rest with electronics cleaner to since it leaves no residue at all (oils do).

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Janicholson

07-19-2007 13:11:59




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 Re: farmall 6 volt starter in reply to John-Paul T, 07-19-2007 12:30:39  
John-Paul T, I cannot agree with you on this. A bushing that is worn cannot be made smaller by honing. Bushings (in starters) wear on the side with the most thrust (side of drive end which is away from flywheel) Bushings are replaced. A generic bushing might need to be fit to a shaft after replacement. No offense intended, just good practice. JimN



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John-Paul T

07-19-2007 16:30:06




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 Re: farmall 6 volt starter in reply to Janicholson, 07-19-2007 13:11:59  
who said anything about being warn? I was refuring to it being gummed up (that is IF it was)and I said fine hone as to just clean it not to oversize it.



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NDS

07-19-2007 07:35:56




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 Re: farmall 6 volt starter in reply to michael geer, 07-19-2007 05:47:42  
I have been around these old tractors for 60 years and in my opinion if starter is old and giving trouble you are better off buying a quality factory bebuilt starter than to tinker around with old one. Have always had facrory rebuilt starters to last for years where home repaired are even gen/alt/starter shop rebuilds often do not last a month. Starter shops rarely see these old starters and often do not have parts for complete rebuild and often just patch them up and get them working for the moment.

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Roger46

07-19-2007 18:49:06




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 Re: farmall 6 volt starter in reply to NDS, 07-19-2007 07:35:56  
I agree that you cannot have a starter rebuilt by any starter rebuild shop, but I have used one that specializes in old car, truck, and tractor starters and generators and they do a real good job of rebuilding them. They are not cheap, but you get what you pay for usually. I like them because you get your same starter/generator back and it still has the nameplate on it while it seems the rebuild companies put their own label on and remove the orginal nameplate. Roger

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old

07-19-2007 07:30:53




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 Re: farmall 6 volt starter in reply to michael geer, 07-19-2007 05:47:42  
Any time you open a starter up you need to replace more then just the brushes you need to also replace the bushings or yep you will have that type of problem. What happens is now that you opened it up things have moved just a little so its not worn in the same as before so things now bind. I would open it up again and replace the bushings and also doube check the brush springs

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teddy52food

07-19-2007 06:55:29




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 Re: farmall 6 volt starter in reply to michael geer, 07-19-2007 05:47:42  
When you had it apart, did you check the bushings? The armature may be dragging on the fields. Did it turn slow before you put brushes in too? Is the field insulation breaking down?



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JT

07-19-2007 06:17:55




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 Re: farmall 6 volt starter in reply to michael geer, 07-19-2007 05:47:42  
When you replaced he brushes, did you make sure the springs were not weak? Did you clean the commutator and clean the mica from between the lands on the commutator? If you did all this, as the other said, make sure you have good heavy cables, a 6 volt batery does not put out a lot of amps, so any excessive resistance from small cables or a bad connection will do what yours is doing. On the new battery, did you charge it? An off the shelf battery normally only has a surface charge, and are not real fast sellers, so if they sit on the shelf for a while, they might loose charge. But normally connections, or too small cable are the culprit.

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Red Dave

07-19-2007 06:05:33




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 Re: farmall 6 volt starter in reply to michael geer, 07-19-2007 05:47:42  
Could be the battery cables, don't use the skinney little ones made for 12 volt systems. Use something with #1 gauge or larger cables #00 or #1/0 would be my choice.

Could be a high resistance connection. Make sure all the connections are clean, bright and tight, including the ground side too.

Could be the comutator in the starter. Is it clean and do the brushes make even contact across their entire contact surface. Make sure that the insulators between comutator segments are clean with no copper chips bridging across them.

Could be trouble with the rotor in the starter. You'd have to take it to a starter/generator shop to have that checked out on a growler.

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Randy in NE

07-19-2007 06:02:10




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 Re: farmall 6 volt starter in reply to michael geer, 07-19-2007 05:47:42  
Have you checked your battery cables? You need a good set of 0 or 1 gauge wires with GOOD connections for a 6 volt system. Make sure that the ground has a good connection. Have you taken the starter to an electrical repair shop and have them test it? If you did the work yourself and accidentally shorted something out inside the starter then that could be your problem. A few minutes at a repair shop can save you a lot of time and headaches.

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