4MG Rebuild

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Oxbow, Feb 19, 2024.

  1. Last Call

    Last Call Road Train Member

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    I’am not fond of aluminum frames one thing is bolts in aluminum add some years and corrosion and you earn every turn with the wrench when you unbolt anything I personally prefer Air leaf over air track especially if your off of a paved road
     
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  3. Last Call

    Last Call Road Train Member

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    Lol I was thinking of another mentality unstable idiot :biggrin_2556: Not so much you lol
     
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  4. Oxbow

    Oxbow Road Train Member

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    The rust jacking between the steel liner and the aluminum frame was actually starting to distort the frame flanges. Steel and aluminum don't play well together, especially with all the crap on the roads in the winter now.
     
  5. broke down plumber

    broke down plumber Medium Load Member

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    gob it up with dielectric grease
     
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  6. Oxbow

    Oxbow Road Train Member

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    Oh, I forgot to share this:
    20240219_111923.jpg

    How in the hell did that bolt end up the temp regulator?
     
  7. Last Call

    Last Call Road Train Member

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    Yeah except you for got to bring that to Peterbilts attention lol
     
  8. Last Call

    Last Call Road Train Member

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    That’s a very good question @Oxbow I don’t believe it just fell in there
    That’s one for the books lol
     
  9. broke down plumber

    broke down plumber Medium Load Member

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    Well ill try .
     
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  10. pushbroom

    pushbroom Road Train Member

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    The the fretting isnt bad the deck cut will also fix liner fretting.
    If the fretting is bad enough decking the block wont fix it they will counterbore it to the first shim size usually .032. If the fretting is still there they will just keep cutting for a bigger shim. They will know how how much needs to be done.
     
  11. AModelCat

    AModelCat Road Train Member

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    My brakesaver had loose o-rings inside the pickup strainer. Still scratching my head on that one too.
     
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