Who can repair an old school voltage regulator?

blue_tractor_man · Feb 21, 2019

I have a Ford 4000 4 cylinder with a 12 volt system. I have never found a voltage regulator that would hold up even a year. I bought a new old stock Fomoco regulator on Ebay, but it does not seem to work. I have looked for someone to check/fix this regulator, but cannot find anyone. Does anyone have any idea who I can send this regulator to? I want to keep my tractor original, so no alternators.

docmirror · Feb 21, 2019

You can send your reg and also your gen here:

http://www.dandfbattery.com/

Each gen puts out slightly different voltage. The reg can be matched to the generator. They will either repair your reg, or will sell you a new American made one, and match the output to your gen. Sometimes it's the gen not putting out enough voltage, or putting out a varying voltage that damages the regulator.

I had them do my Ford 8N reg and gen together and have had no trouble since.

grizz02 · Feb 21, 2019

could it be your generator ? how bad or dirty are the brushes?

SVcummins · Feb 21, 2019

The John Deere publishing? Fundamentals of service electrical manual has all the information you?ll ever want on voltage regulators and how to adjust them
Untitled URL Link

jeffcat · Feb 22, 2019

Fix your link. Nothing is comming up.

JWA · Feb 22, 2019

Kenny, did you check with Chris at Dave's Armature on Jackson ave?

Ellis Kinney · Feb 22, 2019

If Teddy52food replies, he fixed a couple for me and did a nice job. Ellis

teddy52food · Feb 22, 2019

I sent him an e mail, but no response so far. Thanks.

Bob · Feb 22, 2019

Check the archives, there's been some post in the past about where to buy solid-state voltage regulators for legacy generator systems.

That would allow you to keep the "correct" generator and make the charging system reliable.

Steve@Advance · Feb 22, 2019

docmirror, I think you nailed it.

A successful generator/regulator marriage requires complete compatibility with each other.

The original regulator was matched exactly to the generator, but it's long gone. Even the brand name regulators are "fit all" applications, no way they could offer exact replacements, the list would be extensive.

Also there could be a problem with the generator. There is a specification for the field amp draw. That needs to be mentioned to the rebuild shop. If the field is drawing too much amperage, it will arc the contacts quickly, shortening the life of the regulator.

And then there is the wiring. Check the wire harness carefully. Shorts, bad connections, if there is an amp meter, those are a common area of hidden high resistance connections.

And finally, if you just can't find a solution, there are alternators hidden inside a generator case. Keeps the original look but provides the dependability of an alternator.
Hidden Alternator

Pete in MD · Feb 22, 2019

The link works for me Jeff.

blue_tractor_man · Feb 22, 2019

Not yet. I did not check there first because U think the old school guys are gone. Could be wrong about that.

SVcummins · Feb 22, 2019

Try this
Untitled URL Link

Bob · Feb 22, 2019

(quoted from post at 12:43:04 02/22/19)
Try this

Or try these links to GOOD electrical equipment theory and service manuals, you will have to copy it and paste into your browser, as it doesn't work here as a direct link.

http://farmallcub.com/rudi_cub/www.cleancomputes.com/Cub/Blue%20Ribbon%20Service%20Manuals/GSS-1310%20Electrical/index.html

http://farmallcub.com/rudi_cub/www.cleancomputes.com/Cub/Blue%20Ribbon%20Service%20Manuals/GSS-1052-C%20Testing%20and%20Servicing%20Electrical%20Equipment/index.html

blue_tractor_man · Feb 22, 2019

Thank you. Maybe I can fix it myself.

Who can repair an old school voltage regulator?

blue_tractor_man

Member

docmirror

Well-known Member

grizz02

Well-known Member

SVcummins

Well-known Member

jeffcat

Well-known Member

JWA

Member

Ellis Kinney

Well-known Member

teddy52food

Well-known Member

Bob

Well-known Member

Steve@Advance

Well-known Member

Pete in MD

Well-known Member

blue_tractor_man

Member

SVcummins

Well-known Member

Bob

Well-known Member

blue_tractor_man

Member

Similar threads