11.1 S60 Detroit metal in oil, bull gear bearing?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by dieselfuelonly, Aug 5, 2020.

  1. dieselfuelonly

    dieselfuelonly Road Train Member

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    We have an 11.1 S60 Detroit, our part time mechanic that helps me a few days a week changed the oil in it recently and pictured below was on the drain plug. Unfortunately he didn't keep the shavings so I could have a look. I pulled the accessory drive, bull gear looks okay not like it's been wobbling.

    Any other quick checks I should do to try to locate the source? Only 364k on the clock but it's in a dump truck so it usually gets rode hard and put up wet.

    [​IMG]
     
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  3. Rideandrepair

    Rideandrepair Road Train Member

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    That’s some big metal. Pull the pan, might get lucky, maybe part of the oil pump came loose, or something else simple, easy to see.
     
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  4. dieselfuelonly

    dieselfuelonly Road Train Member

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    That's what I thought too. Apparently someone hopped in and drove it several times after he changed the oil so I'll drain it and see if I can get some more metal I can have a better look at myself.

    I'm doubting I'd see chunks that big from the compressor but that could be a possibility as well.
     
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  5. AModelCat

    AModelCat Road Train Member

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    You would be wise to avoid running that engine if at all possible. Start with the easy checks like pulling the valve cover and oil pan. Front cover is probably a major pain to remove so I'd leave that until last.
     
  6. blairandgretchen

    blairandgretchen Road Train Member

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    I concur - those are some considerable chunks.
     
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  7. spsauerland

    spsauerland Road Train Member

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  8. dieselfuelonly

    dieselfuelonly Road Train Member

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    Drained the oil and had a look at the drain plug magnet, few more flakes. I'm definitely not letting the truck to go out any more until I can find the source, drove it in the shop today and that's as far as it'll go.

    Dropped the pan, oil pump drive gear looked fine and didn't initially see anything that looked off around the pump but I'll have a closer look tomorrow. I think I'll pull the valve cover tomorrow and have a look on top, I'm hoping if the source was from on top I'll be able to see some more chunks and flakes of metal that didn't make it down the drains back to the pan. Will see how the bearings/shaft in the turbo feel as well. If I'm still not having any luck I guess it'll be time to pull the front cover and have a closer look under there.

    Really wish our part time help hadn't thrown away the larger chunks he found in the first pic so I could see them for myself, but too late to worry over that now.

    [​IMG]
     
  9. SmallPackage

    SmallPackage Road Train Member

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    81854FF4-FBFC-44D4-99AB-789429997556.jpeg
    Not a Detroit. But the last time I changed the oil in my old Cummins Nh 250 this piece was sitting on the bottom of the pan within a fingers reach through the drain hole. Its a 3/4” long piece of piston ring from an overhaul that occured over 30 years ago!
    Guess it rested somewhere in the block and wasn’t cleaned out. Freaked me out at first but the engine was and is still acting healthy so I rolled with it.
    So maybe what you found was crud left over from the past that has been sitting somewhere and hasn’t hurt anything.
     
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  10. Rideandrepair

    Rideandrepair Road Train Member

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    914CFEC5-B1F1-4F58-9FE4-E13F33EFB9CD.jpeg
    You may be right. Here’s what came out of mine, after 6000 miles on the OH. It’s from cutting counterbores, I watched the Guy clean it real good with air, and running a magnet throughout. Makes Me want to drop the pan, and clean it out.
     
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  11. SmallPackage

    SmallPackage Road Train Member

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    We changed the rear diff oil in my wifes ‘14 Camaro SS at 42,000 miles and that is what it’s plug looked like. Research says they ALL do and no worries from GM. Scary!
     
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