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M38a1c Model Parts Identification

Discussion in 'Early Jeep Restoration and Research' started by Thean, Jun 3, 2019.

  1. Jun 3, 2019
    Thean

    Thean Member

    HSB Idaho
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    i picked up a rolling chassis that had been bubba’d in its previous life. I am needing some help identifying these drum brakes. The rear appear to be a 9”, possibly 10”, and both backing plates have an additional cable running into them, which I can only assume is a parking brake. I spent some time researching and I can only find info on the D18 output drum brake and its clamp style actuation vs the later typical 2 internal shoe configuration.
    Help identifying what brakes are on this D44 axle would be great. It looks as if both front and rear backing plates match dimensionally and very much in appearance.
    I plan to tear into them sometime this week.
     
  2. Jun 3, 2019
    Thean

    Thean Member

    HSB Idaho
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  3. Jun 3, 2019
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member Sponsor

    Tantallon, Nova...
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    Looks like 9" but they've been Bubba'd. Take some pics when you get them apart, it will be interesting to see how they added a parking brake.
     
  4. Jun 3, 2019
    Thean

    Thean Member

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    Thanks Howard, will do.
     
  5. Jun 3, 2019
    Thean

    Thean Member

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    ADDE2E18-2860-4002-8E6F-9B0CE80B646F.jpeg A6F88C3F-3A64-484B-9FFE-B2344F7418A9.jpeg They measure 9” and look to be a true OEM parking brake setup. Could this have been part of the recoil-less rifle package that include the coil spring upgrade, etc? The fronts look identical minus parking brake parts and holes in backing plate.
    Oh yeah, finally got a chance to use my thread on smacker for two-piece shafts. A couple taps from the 5 pound and the flange had popped from its taper.
     
  6. Jun 3, 2019
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member Sponsor

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    The 808835 p/n on the lever comes up on google as a DJ3A part, as these were 2wd they obviously would not have the xfer case parking brake.

    Guess I can't blame Bubba after all. ;)
     
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  7. Jun 3, 2019
    Thean

    Thean Member

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    Ha! Nice. Thanks for looking that up! Do you think this was a later conversion or factory ‘C’ model adaptation for the gun mount kit?
     
  8. Jun 3, 2019
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member Sponsor

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    I'll have to leave that for someone more knowledgeable on the military variants; you could try asking on the g538 site- if anyone anywhere knows someone there will.
     
  9. Jun 3, 2019
    Thean

    Thean Member

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    Great. Thanks, will take a look at that page!
     
  10. Jun 3, 2019
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member Sponsor

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    My bad- G503.com
     
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  11. Jun 3, 2019
    Keys5a

    Keys5a Sponsor Sponsor

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    I've had an A-1C about 10 years ago. They had additional overload coil springs on the rear axle. The spring and base clamped on the axle tube just outboard of the leaf spring, and there was a bolt-on upper spring pocket on the outside of the frame rail. I believe this was one of several unique feature of the C model. All M38A1 Jeeps had the gun mounting pad on the chassis crossmember under the bed area.
    Your brake backing plates are Bubba'ed with those parking brakes shown, at least for an A1.
    -Donny
     
  12. Jun 3, 2019
    Thean

    Thean Member

    HSB Idaho
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    -Donny

    Thanks for the clarification. I have the upper coil brackets, crossmember with the gun base pad, etc. I’ll be yarding this thing out, someone got crazy with a torch all over the place, like it spent some time in a scrap yard. then whoever “rebuilt it”, booger welded stacked bolts in places to mount other parts to it. Most of the A1C parts are there, minus the lower coil bucket on the axle. I thought maybe the Park Brake on the axle might have been a part of that A1C package. While I want park brakes on my 60s CJ axle, I’d be going backwards with these 9” brakes, do they have any value to anyone?
     
  13. Jun 3, 2019
    PeteL

    PeteL Member Sponsor 2019 Sponsor

    Hills of NH
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    M38A1-C has the standard (military version) transmission parking brake.

    Preserve any of the supplementary coil spring parts, they are scarce.
     
  14. Jun 3, 2019
    Thean

    Thean Member

    HSB Idaho
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    I even saved the oem hardware that has cosmoline in the threads. Wish I had the lower coil brackets. They were long gone. Tube clamps are still in place.
     

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