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Military Tailight Interior Corrosion

Discussion in 'Flat Fender Tech' started by DanStew, Jan 18, 2022.

  1. Jan 18, 2022
    DanStew

    DanStew Incorrigible. Staff Member

    Lexington, South...
    Joined:
    Sep 22, 2002
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    4,513
    I got a set of taillights to use on my M38. One light is fine, but the other has this whiteish powdery corrosion on the reflector half of the light. How do i get rid of this? Since the thing is a wierd alloy I am a bit clueless. image0.jpeg
     
  2. Jan 18, 2022
    Jw60

    Jw60 WRPD855 2022 Sponsor 2021 Sponsor 2020 Sponsor

    Sedalia MO.
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    Apr 8, 2008
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    is that not zinc plated aluminum?
    Not being an expert I would us baking soda paste and brush like you would battery corrosion. Then hit it with shiny paint.
     
    Last edited: Jan 18, 2022
    ojgrsoi likes this.
  3. Jan 19, 2022
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor 2021 Sponsor 2020 Sponsor

    Medford Mass USA
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    Could be either a zinc alloy (pot metal) or aluminum. Certainly a drop of pool acid on the metal will detect zinc: HCl + Zn -> H2 + ZnCl. It'll fizz like AlkaSeltzer or Fizzies. This is a destructive test, so don't go wild with the acid.

    In my experience aluminum can oxidize and will be pitted and feel grainy. As above, scrub with a toothbrush and paint it. Not sure the soda paste will do anything other than be a mild abrasive. Won't hurt - wash with water and dry.
     
  4. Jan 20, 2022
    jeeper50

    jeeper50 jeeps 'till I die

    Gawja
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    Dec 20, 2007
    Messages:
    765
    Walnut shell blast it, then spray it with zinc chromate
     
    Jw60 likes this.
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