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Case Tractors Discussion Forum
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case generators dc,sc,vac

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dc in illinois

05-08-2012 21:00:08




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Good evening gents, I hope someone here can shed some light on this for me. My neighbor has a few case tractors and I have a 53 dc with only my self to repair the gen/charging systems on these tractors. Did case made a manual for repairing generators? If so, I could repair it myself and learn how it works in the process! All the other service manuals say to take them to a case authorized service center. At one time I&T shop manuals made a manual called "Standards" that showed how to rebuild starters and generators.Bob

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Christopher Mikesell

05-08-2012 21:40:20




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 Re: case generators dc,sc,vac in reply to dc in illinois, 05-08-2012 21:00:08  
There is an article on this site which details how the generators on the VAC, SC, and DC work. I believe that all of these generators are what are called "three brush generators." Usually, the first thing to go bad on one of these is the brushes. They wear out and need to be repalced. Also, the connections to the voltage regulator/cutout corrode and don't conduct like they should. Fixing one or both of these things will usually bring a generator back to life. Bearings also go bad and commutators may need to be turned. Also, insulation fails and the motor steel can loose its magnetism. Magnetism can be restored by correctly "flashing" a generator with battery voltage. Before you take anything major apart, open the inspection cover and make sure the brushes are being held against the commutator by the springs, then flash the generator using the proper procedeure for your type of generator. If the generator still does not charge, next clean all of the connections to the voltage regulator/cutout at both the regulator/cutout end and the generator end. Also clean the generator ground connections. Going any further than this requires more tests and troubleshooting.

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dc in illinois

05-09-2012 06:58:18




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 Re: case generators dc,sc,vac in reply to Christopher Mikesell, 05-08-2012 21:40:20  
Thank you for the quick reply. My tractor and one of the neighbor s dc have what I belive to be and auto light gen/regulator that has the fuse in the regulator. Do you know what size fuse that should be? As both taractors have differnt fuses and no info is available in the owners or sevice manual.thank you again and god bless Bob.



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Christopher Mikesell

05-09-2012 08:16:27




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 Re: case generators dc,sc,vac in reply to dc in illinois, 05-09-2012 06:58:18  
I have heard that they take a 4-6 amp fuse, but I don't know because none of my tractors' regulators have fuses.



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dc in illinois

05-09-2012 15:41:07




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 Re: case generators dc,sc,vac in reply to Christopher Mikesell, 05-09-2012 08:16:27  
Thank you for your help. My tractor gen. is now puting out like a champ. Just cleaned up connections realy well.changed the fuse wich by the way is a Buss/aga 5anp fuse 32 volt dc.found at a place like tsc.for $2.79 and we are off to the races! now for the rest of the herd of tractors once again thank you .Bob



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