4MG Rebuild

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

  1. broke down plumber

    broke down plumber Medium Load Member

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    I respect the hell outta folks that can rip out their stuff and overhaul it . I assume its a cat but dont know what the spec of a 4MG is . Ill google . Hope it goes smooth .
     
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  3. Oxbow

    Oxbow Road Train Member

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    No target date. We'll work on it as we have time. Swapping the cab from the aluminum frame to the rolling chassis may be an adventure, but we are going to have the engine and trans in it before we swap the cab!
     
  4. Oxbow

    Oxbow Road Train Member

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    Yes it's a B model Cat. Thanks!
     
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  5. broke down plumber

    broke down plumber Medium Load Member

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  6. Last Call

    Last Call Road Train Member

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    In all honesty the cab swap is a walk in the park I can walk you through that when you get ready
     
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  7. JB7

    JB7 Medium Load Member

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    "the crack would reappear each time and extend a little further" Ends of a crack are high stress points. Would have had a better chance drilling at the ends of the crack to relieve stress then welding. The method is called stop/end drilling. Too late this time. You mentioned Lock and Stitch, there are others such as Irontite crack repair.
     
  8. Oxbow

    Oxbow Road Train Member

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    About the only difference in the chassis is the aluminum frame has air track and the "new" one is air leaf. It's nice having an example to go look at.
     
  9. Last Call

    Last Call Road Train Member

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    IDK if respect is the correct term .. I would say it’s more of a question about their sanity
     
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  10. Oxbow

    Oxbow Road Train Member

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    The problem was the fear of drilling clear through the block into the oil gallery abd getting shavings in there. We could have dropped the pan and tried to collect shavings, and tried to flush them out of the oil gallery, but rather than take that gamble we opted to start with a better block.

    I'm not disagreeing with you. Access to the area while in the frame was challenging, so once we pulled the engine we chose to start with (I hope) a better block.
     
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  11. Oxbow

    Oxbow Road Train Member

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    Guilty as charged!
     
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