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#99183 02/09/2007 8:44 AM | Joined: Jun 2005 Posts: 321 Shop Shark | | Shop Shark Joined: Jun 2005 Posts: 321 | here we go again.
what would cause the brush retaining spring on the field side terminal to melt? everything is fine for the first five to ten minutes and then something just goes south. very frustrating!
this is just another chapter in the continuing saga of 6 volt pergatory that i have been going through with my charging system. what should i do? i really want to stay with the 6 volt system so do i just shelve the existing generator and take the plunge and buy one from jim carter or some other source that will probably cost me an arm and a leg?
getting to the end of my rope. any advice welcomed! | | |
#99184 02/09/2007 2:18 PM | Joined: Mar 2006 Posts: 483 Shop Shark | | Shop Shark Joined: Mar 2006 Posts: 483 | Look at the field wires in the generator to insure they are isolated from the ground, IE not touching ground. Since it melted the bracket the short is pretty close to that area. Insure that the mounting bracket is grounded/not grounded properly, check wiring diagram. The path of curent seems to have went thru the brush holder and not the brush it self. Sometimes when this amount of heat occurs the wire solder is melted away from the brush. Replace the brushes. I get mine from a local company that sells tractor parts, same brush and a lot chepper that vendors. Good luck and keep us posted | | |
#99185 02/09/2007 4:06 PM | Joined: Jul 2004 Posts: 5,708 'Bolter | | 'Bolter Joined: Jul 2004 Posts: 5,708 | p.j., Beaver 53 sounds like he has 'been there, done that'. A full field output test on these generators involves grounding the field wire temporarily. I wonder if your external wiring could have a break or worn spot in it that was grounding and telling the generator to go nuts. I would think you would see any generator output on your ammeter if this were the case. Maybe you could inspect all your generator to regulator wiring for defects, replace both brush holder springs with new ones and give the thing another try. This is a great learning experience, too bad it has to be at your expense.  Stuart | | |
#99186 02/10/2007 4:11 AM | Joined: Mar 2006 Posts: 483 Shop Shark | | Shop Shark Joined: Mar 2006 Posts: 483 | If short was above regulator wiring would be damaged. Any thing above regulator will be protected by regulator relays, if field contact is closed to ground direct short.If solder is bad in wire/brush, short goes thru brush holder/ spring, easy path of curent to ground 40+ amps, burn.. I think problem is in generator.Just my input, err-aa/output. | | |
#99187 02/10/2007 4:38 AM | Joined: Jun 2005 Posts: 321 Shop Shark | | Shop Shark Joined: Jun 2005 Posts: 321 | i think you're right beaver 53. i'm just going to replace the generator. other than re-wiring the truck, there is not much else i can do.
thanks guys for the input! | | |
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