The Ford Barn

Dbbc · 11-25-2014, 07:20 PM

Aloha,
Generator not charging, had a broken brush, replaced it but still no go.
I understand you can check if the generator is working by jumping the cutout and see if you get a charge. Where do you attach the jump wire to bypass the cutout, do you attach between the 2 bolt that are closest the radiator, or between one of those (if so which one the one on the side of the motor or the other one?0 and the one that is closest to the firewall?
I also find some of what look like silver solder on some of the inside of the generator and attach to the wires? Where is that coming from?

Lastly any suggestions on where to rebuild the generator if in fact it is no longer working.
As always, I greatly appreciate any help.
Happy thanksgiving.

Tom Wesenberg · 11-25-2014, 07:44 PM

Your armature overheated and threw solder from the ends of the wires soldered to the commutator bars. If you get lucky you can resolder them and have a good armature. Best to have someone check it on a growler though.

To bypass the cutout (in case it's bad) just jump a clip lead between the two terminals, the input and output terminal on each side of the can.

tbirdtbird · 11-25-2014, 08:46 PM

Tom, ever find an armature that threw solder end up not being shorted? That is a lotta heat...

Tom Wesenberg · 11-25-2014, 10:41 PM

I have seen a couple with just a little thrown solder, and they were still good. If the cutout contacts didn't make a good connection then the generator can put out up to 40 volts and overheat. I've never had a problem with my original cutout. I think most problems original at the wiring connections or ammeter terminals coming loose, then the voltage goes up and burns the cutout contacts. Then some cheap junk cutout replaces the quality original cutout, and the problems continue.

Dbbc · 11-25-2014, 11:14 PM

Aloha,
Their was not a lot of solder thrown around, but again I am not sure how much there is. The inside of the armature of the generator, the field coil etc are black, but do not smell burnt!! I will try to bypass the cutout and see if it works. Any other work around to make sure if the generator works or not.

Tom Wesenberg · 11-25-2014, 11:27 PM

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With the belt off, then you bypass the cutout with the jumper wire, and if the generator doesn't turn slowly in it's normal direction of rotation, it needs to be worked on.

Dbbc · 11-26-2014, 01:45 PM

Aloha,
Took the cutout off, has well as the belt, left the generator hooked up and connected the positive from the battery to the terminal of the generator, nothing but sparks.... guess I shopping for a new one.

Bob C · 11-26-2014, 01:53 PM

You want to jumper from the negative battery terminal, the one hooked to the starter switch, to the generator terminal.

Bob

Dbbc · 11-26-2014, 05:21 PM

Aloha,
Yes this what I did. Well I do have a cutout in between and hooked it up to the cutout.
I thing my generator is done for.
Thanks for your help.

tbirdtbird · 11-26-2014, 08:41 PM

need to figure out why this one overheated........else it will happen again

Dbbc · 11-27-2014, 01:13 PM

Aloha,
Any suggestions on what could cause the overheating?

Bad cutout, generator set up to produce to much juice, anything else?

Tom Wesenberg · 11-27-2014, 02:21 PM

Quote:

Originally Posted by Dbbc

Aloha,
Any suggestions on what could cause the overheating?

Bad cutout, generator set up to produce to much juice, anything else?

Most likely a bad connection started the trouble.

11-25-2014, 07:20 PM	#1
Dbbc Senior Member Join Date: Apr 2014 Location: Honolulu Posts: 116	More help with generator Aloha, Generator not charging, had a broken brush, replaced it but still no go. I understand you can check if the generator is working by jumping the cutout and see if you get a charge. Where do you attach the jump wire to bypass the cutout, do you attach between the 2 bolt that are closest the radiator, or between one of those (if so which one the one on the side of the motor or the other one?0 and the one that is closest to the firewall? I also find some of what look like silver solder on some of the inside of the generator and attach to the wires? Where is that coming from? Lastly any suggestions on where to rebuild the generator if in fact it is no longer working. As always, I greatly appreciate any help. Happy thanksgiving.

11-25-2014, 07:44 PM	#2
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: More help with generator Your armature overheated and threw solder from the ends of the wires soldered to the commutator bars. If you get lucky you can resolder them and have a good armature. Best to have someone check it on a growler though. To bypass the cutout (in case it's bad) just jump a clip lead between the two terminals, the input and output terminal on each side of the can.

11-25-2014, 08:46 PM	#3
tbirdtbird BANNED Join Date: May 2012 Location: inside your RAM Posts: 3,134	Re: More help with generator Tom, ever find an armature that threw solder end up not being shorted? That is a lotta heat... __________________ '31 180A

11-25-2014, 10:41 PM	#4
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: More help with generator I have seen a couple with just a little thrown solder, and they were still good. If the cutout contacts didn't make a good connection then the generator can put out up to 40 volts and overheat. I've never had a problem with my original cutout. I think most problems original at the wiring connections or ammeter terminals coming loose, then the voltage goes up and burns the cutout contacts. Then some cheap junk cutout replaces the quality original cutout, and the problems continue.

11-25-2014, 11:14 PM	#5
Dbbc Senior Member Join Date: Apr 2014 Location: Honolulu Posts: 116	Re: More help with generator Aloha, Their was not a lot of solder thrown around, but again I am not sure how much there is. The inside of the armature of the generator, the field coil etc are black, but do not smell burnt!! I will try to bypass the cutout and see if it works. Any other work around to make sure if the generator works or not.

11-25-2014, 11:27 PM	#6
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: More help with generator Sponsored Links (Register now to hide all advertisements) With the belt off, then you bypass the cutout with the jumper wire, and if the generator doesn't turn slowly in it's normal direction of rotation, it needs to be worked on.

11-26-2014, 01:45 PM	#7
Dbbc Senior Member Join Date: Apr 2014 Location: Honolulu Posts: 116	Re: More help with generator Aloha, Took the cutout off, has well as the belt, left the generator hooked up and connected the positive from the battery to the terminal of the generator, nothing but sparks.... guess I shopping for a new one.

11-26-2014, 01:53 PM	#8
Bob C Senior Member Join Date: May 2010 Location: So Cal Posts: 8,751	Re: More help with generator You want to jumper from the negative battery terminal, the one hooked to the starter switch, to the generator terminal. Bob

11-26-2014, 05:21 PM	#9
Dbbc Senior Member Join Date: Apr 2014 Location: Honolulu Posts: 116	Re: More help with generator Aloha, Yes this what I did. Well I do have a cutout in between and hooked it up to the cutout. I thing my generator is done for. Thanks for your help.

11-26-2014, 08:41 PM	#10
tbirdtbird BANNED Join Date: May 2012 Location: inside your RAM Posts: 3,134	Re: More help with generator need to figure out why this one overheated........else it will happen again __________________ '31 180A

11-27-2014, 01:13 PM	#11
Dbbc Senior Member Join Date: Apr 2014 Location: Honolulu Posts: 116	Re: More help with generator Aloha, Any suggestions on what could cause the overheating? Bad cutout, generator set up to produce to much juice, anything else?