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Galvanic Corrosion?

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  • #1

    Galvanic Corrosion?

    I noticed on my Curt Tuning Point pin box that is 5 months old, that the washers are corroding. I’m wire brushing the rust in order to paint, but if this is dissimilar metals corrosion, it will continue unless the washers are replaced or something else is changed.

    Has anyone else run into this issue? Any suggestions?
    1 Photo
    Last edited by BR549; 04-21-2023, 12:52 PM.
    2022 Reflection 280 RS
    2020 Silverado 2500 HD
    Tags: None
  • #2
    Painting will seal out the water electrolyte. Without electrolyte there will be no corrosion between dissimilar metals. Paint away.
    Ted
    2021 Reflection 310RLS
    2020 F350 PS,CC,LB,SRW

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    • #3
      I do not think that it is dissimilar metals but cheap washers made from junk steel and poor plating practice. Clean them up and paint them or replace with better quality.

      Brian
      Brian & Michelle
      2018 Reflection 29RS
      2022 Chevy 3500HD
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      • #4
        Originally posted by BR549 View Post
        I noticed on my Curt Tuning Point pin box that is 5 months old, that the washers are corroding. I’m wire brushing the rust in order to paint, but if this is dissimilar metals corrosion, it will continue unless the washers are replaced or something else is changed.

        Has anyone else run into this issue? Any suggestions?
        Based on the paint fretting around the washers, it appears they have been removed and replaced. More than likely the coating is shot or they were plain steel washers.

        Best bet is to remove them one at a time, clean, paint, and then reinstall. you may want to touch up the underlying surface while removed. Double check the torque on the bolts if you choose to remove and replace.
        Joseph
        Tow         Vehicle: 2024 GMC K3500 Denali Ultimate Diesel
        Coach: 303RLS Delivered March 5, 2021
        South of Houston Texas

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        • #5
          Most of the plating on the RV fasteners is poor quality. In general, miscellaneous fastener plating is not as robust as it used to be.
          That picture shows what we lovingly refer to as "Michigan loctite"
          2021 Reflection 337RLS, 2021 Silverado 3500HD 6.6 gas. Nellie the wonder boxer

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