Fixed My Voltage Regulator Today

Discussion in 'Early CJ-5 and CJ-6 Tech' started by PeteL, Aug 11, 2017 at 8:46 PM.

  1. Aug 11, 2017 at 8:46 PM
    PeteL

    PeteL Member Sponsor

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    Generator idiot light came on, wouldn't go out. (6 volt F-head)

    Opened the regulator cover, poked the solenoid contacts with my finger.
    Light went out. Life is good.

    The cover still had the original lead seal on it, never been touched since 1956. This is the kind of service cycle I can approve of.

    What are these 'solid state electronics' you speak of?
     
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  2. Aug 11, 2017 at 9:10 PM
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member Sponsor

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    Be advised it will probably stick again, those contacts have a coating on them to resist arcing, once it's gone they won't last.

    H.
     
  3. Aug 11, 2017 at 9:18 PM
    PeteL

    PeteL Member Sponsor

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    My thought too, except the contacts were open when I poked them. :n:


    I expect I should check the generator's output, and brushes too. But it's all working fine at the moment.
     
    Last edited: Aug 11, 2017 at 10:02 PM
  4. Aug 12, 2017 at 2:20 AM
    mayday

    mayday Sponsor Sponsor

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    I had to replace my original one on my 58 a year ago. Went through two new ones both went out with in 6 months. Got a NOS one works good. My question is can you rebuild them? I'd like to have old one fixed as a spare. All electrical repair shops were I live said they won't rebuild them.
    Thanks Jon
     
  5. Aug 12, 2017 at 7:09 AM
    Walt Couch

    Walt Couch sidehill Cordele, Ga. Sponsor

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    Even a half century ago when I was in the auto electrical business, there was very few voltage regulators that were designed to be re-build-able. The repair of one consisted of cleaning, burnishing the contacts and re-adjusting the relays. The auto regulators were riveted together (some included the cover) and the repair shop could not (economically) be able to stock the thousands of different parts needed to re-build. I did carry a variety of springs and resistors because those were pretty standard. My repaired regulators carried a 90 day warranty but only if the contacts had not been burned. As Howard said, there was a special coating on the contacts and once burned you did not know how long they would last.
     
  6. Aug 12, 2017 at 7:39 AM
    lhfarm

    lhfarm Sponsor Sponsor

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    I am chasing a no charge problem on my 12V CJ3a. I had the generator and voltage regulator checked and the regulator was bad. Ordered a replacement and still no charge. A friend told me that many replacement voltage regulators simply don't last or fail quickly. Does anyone have a source for a good quality regulator?

    Thanks.
     
  7. Aug 12, 2017 at 7:50 AM
    PeteL

    PeteL Member Sponsor

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    I would look for NOS on ebay. They are there, especially if you do some google-fu on numbers and applications.
     
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  8. Aug 12, 2017 at 8:32 AM
    Walt Couch

    Walt Couch sidehill Cordele, Ga. Sponsor

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    Are you positive you have a good ground from the regulator to the generator? Belt tight?
     
  9. Aug 12, 2017 at 12:24 PM
    Mr. Polecat

    Mr. Polecat New Member

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    I'd replace the mechanical unit with a solid-state one, personally. I know on the old tractors, the rebuilt mechanical regulators never last. :(
     
  10. Aug 12, 2017 at 1:28 PM
    mayday

    mayday Sponsor Sponsor

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    X2 on Petes advise, I did the same regulator was 30.00, came in an old auto light box. Put it in, polerized, and works like a champ. I'll look around for the link but I found were some one had posted an old auto light tech publication had lots of part numbers for cross reference, if I find it I'll post.
     
  11. Aug 12, 2017 at 1:41 PM
    mayday

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  12. Aug 12, 2017 at 6:26 PM
    PeteL

    PeteL Member Sponsor

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    Wow? Great resource, thanks.

    But I found NOS regs just by using the number given in my FSM. And yes, they were way cheaper than repro.
     
  13. Aug 12, 2017 at 6:33 PM
    mayday

    mayday Sponsor Sponsor

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    Thanks I printed a copy and put with all my jeep info. I'd wish I could find a test set they have in the book.
     
  14. Aug 13, 2017 at 7:38 AM
    lhfarm

    lhfarm Sponsor Sponsor

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    I'll need to read/study/learn about generators. Thanks and I'll get back when I find the fix.
     

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