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Alternator Research

Discussion in 'Early Jeep Restoration and Research' started by truckee4x4, Jul 7, 2020.

  1. Jul 7, 2020
    truckee4x4

    truckee4x4 Member 2020 Sponsor 2019 Sponsor

    Truckee CA
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    May 30, 2008
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    Does anyone with an OEM Late 1960s Jeep have A part / model number for the Motorola alternator that came on the Dauntless V6? I’m just doing some research on the OEM specs for the electrical system. Thanks.
     
  2. Jul 7, 2020
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member 2020 Sponsor

    Denver, CO
    Joined:
    Jul 18, 2013
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    3,259
    According to my FSM, v6 alternator:
    Motorola A12 NW 528 Negative Ground 35Amp
    External regulator is Motorola R-2-K-1 (transistor style)
     
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  3. Jul 8, 2020
    maurywhurt

    maurywhurt Member 2020 Sponsor 2019 Sponsor

    Western North...
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    Dec 12, 2009
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    591
    The optional alternator was a Motorola 55-amp model - here's a photo of the data plate:

    [​IMG]


    Also, the earlier V6 voltage regulator used with both the 35-amp and the 55-amp alternators was a Motorola TVR-12W14 mounted on the passenger side inner fender well:

    [​IMG]

    [​IMG]

    Sometime during the first half of the 1967 model year, the Motorola R2K1 superceded it. The location of the R2K1 voltage regulators seems to have varied somewhat, but it appears that most were placed on the firewall.
     
    Last edited: Jul 9, 2020
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  4. Jul 8, 2020
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member 2020 Sponsor

    Denver, CO
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    Maury knows way more about the details on this kind of true restoration stiff than I...as he says, the mounting location may have moved around a bit, so FWIW, the R2K1 volt reg was mounted in the inner passenger fender on the 1970 I have (production date of 1/70). I might still have some pics from when I removed the VR and replaced the setup with a 10SI etc....
     
  5. Jul 8, 2020
    maurywhurt

    maurywhurt Member 2020 Sponsor 2019 Sponsor

    Western North...
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    Yep, after the R2K1 was moved to the firewall, at some point it was moved back to the earlier VR location on the inner fender well. You really have to wonder what the Jeep engineers' rationale for doing this was. I'd heard that the reason the voltage regulator was moved to the firewall in the first place was to keep it further away from exposure to mud, rocks, dirt, etc - which seems to makes some sense, until you realize that they later moved it back to the inner fender well.

    An NOS example of the Motorola R2K1:

    [​IMG]


    Here's a photo of my brother-in-law Fred's '67 (manufactured in Nov. '66) engine compartment showing the R2K1 on the firewall, just behind the air cleaner:

    [​IMG]
     
    Last edited: Jul 9, 2020
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  6. Jul 8, 2020
    bigbendhiker

    bigbendhiker Member 2020 Sponsor 2019 Sponsor

    North East Texas
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    Tell your brother in law that's one good looking engine compartment! Or if you did the restoration, hat's off to you! I'd almost be afraid to drive it for fear of getting it dirty.
     
  7. Jul 8, 2020
    maurywhurt

    maurywhurt Member 2020 Sponsor 2019 Sponsor

    Western North...
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    Will do - he did the engine compartment himself, and it does indeed look great!
     
  8. Jul 8, 2020
    Fred T

    Fred T New Member

    Knoxville, TN
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    Dec 19, 2015
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    Thanks! It was a lot of work and a long wait, but I guess that what hobbies are for. I touched up some of the paint and repainted the air cleaner last night so it's actually looking even better now :). Not for long though, I drive it all the time.
     
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  9. Jul 8, 2020
    truckee4x4

    truckee4x4 Member 2020 Sponsor 2019 Sponsor

    Truckee CA
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    X2 that is a beautiful job! What paint did you use on the air cleaner?
     
  10. Jul 31, 2020
    Randy Benedict

    Randy Benedict Member

    Center, MO
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    Jan 13, 2020
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    52
    .My 67 has the original 37 amp Motorola 12n37a.
     

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