Generator Needs HELP

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Topic author
Pops
Posts: 83
Joined: Mon Jan 07, 2019 9:22 pm
First Name: David
Last Name: Houston
* REQUIRED* Type and Year of Model Ts owned: 13,14,19,21,&etc
Location: WNC
MTFCA Number: 32227
MTFCI Number: 23901

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

User avatar

AndreFordT
Posts: 487
Joined: Sun Jan 06, 2019 12:25 pm
First Name: Andre
Last Name: Valkenaers
* REQUIRED* Type and Year of Model Ts owned: 1926 ; 1922 ; 1915.
Location: Scherpenheuvel
MTFCA Number: 23792
MTFCI Number: 19330

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

User avatar

Mark Gregush
Posts: 4957
Joined: Sat Jan 05, 2019 1:57 pm
First Name: Mark
Last Name: Gregush
* REQUIRED* Type and Year of Model Ts owned: 1925 cutdown PU, 1920 Dodge touring, 1948 F2 Ford flat head 6 pickup 3 speed
Location: Portland Or
MTFCA Number: 52564
Board Member Since: 1999

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! :shock:

1925 Cut down pickup
1920 Dodge touring
1948 Ford F2 pickup

User avatar

GrandpaFord
Posts: 146
Joined: Sun Jan 06, 2019 2:46 pm
First Name: Neil
Last Name: Kaminar
* REQUIRED* Type and Year of Model Ts owned: 1915 Touring
Location: Mebane, North Carolina
MTFCI Number: 22425

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: 83
Joined: Mon Jan 07, 2019 9:22 pm
First Name: David
Last Name: Houston
* REQUIRED* Type and Year of Model Ts owned: 13,14,19,21,&etc
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

User avatar

RajoRacer
Posts: 4308
Joined: Sun Jan 06, 2019 12:18 pm
First Name: Steve
Last Name: Tomaso
* REQUIRED* Type and Year of Model Ts owned: 1914 Touring, 1919 Centerdoor, 1924 TT C-Cab Express, 1925 Racer
Location: Longbranch, WA
MTFCA Number: 14972
MTFCI Number: 15411
Board Member Since: 2001

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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