Generator Needs HELP

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Topic author
pops
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First Name: David
Last Name: Houston
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Generator Needs HELP

Post by pops » Thu Jan 24, 2019 10:26 am

Hello
My 1924 stock T Model Coupe's generator (6 volt system) puts out 6-8 amps at regular road speed (30-35 mph). Last week in about 15 mile drive it went from 6-8 amps to the max on the gauge of 20 amps.The volt meter I have on the car went from 7-71/2 volts to almost 10 volt reading. I adjusted on the Third Brush which did not change the out put of 20+Amps or the Voltage reading.
ANY suggestions will be Appreciated!
THANK YOU---David H

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andrefordt
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Re: Generator Needs HELP

Post by andrefordt » Thu Jan 24, 2019 11:26 am

I think you have short in your Generator.
It will need a good overhaul.

Good luck
Andre
Belgium

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Mark Gregush
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Re: Generator Needs HELP

Post by Mark Gregush » Thu Jan 24, 2019 11:47 am

The brush plate is held in place with 4 very small screws, almost sounds like that plate has come loose. Can you move the whole plate, with the 3rd brush still tight to it. If the brush plate has come loose and none of the 4 screws are missing read the section in the Ford service manual on in car set up of the brush plate.
Attachments
brush plate 2.jpeg
brush plate.jpg
I know the voices aren't real but damn they have some good ideas! :roll:

1921 Huckster
1925 Cut down pickup

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GrandpaFord
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Re: Generator Needs HELP

Post by GrandpaFord » Thu Jan 24, 2019 12:00 pm

It sound to me like the wire connected to the output that goes to the battery is shorted to the field winding that is normally supplied by the third brush. You can test for a short buy putting little strips of cardboard or paper between the brushes and the commutator and then use an ohm meter to see if the third brush and the output brush are shorted. Look for frayed wires.


Topic author
pops
Posts: 24
Joined: Mon Jan 07, 2019 9:22 pm
First Name: David
Last Name: Houston
Location: WNC
MTFCA Number: 32227
MTFCI Number: 23901

Re: Generator Needs HELP

Post by pops » Thu Jan 24, 2019 9:36 pm

I think I will try the adjustment on the Brush Plate.If no luck with that I will see if I can find shorted wire or field coil
Thanks --David

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RajoRacer
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Re: Generator Needs HELP

Post by RajoRacer » Thu Jan 24, 2019 10:05 pm

The 3rd brush insulator can be problematic after years of fiddling by "who knows who" !

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