N14 Celect tear down.

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by mile marker 27, Mar 3, 2024.

  1. mile marker 27

    mile marker 27 Road Train Member

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    I’ll check them this afternoon. What can be done about the fretting?
     
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  3. W923

    W923 Road Train Member

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    There’s a shop in the ####ty part of st Louis that can remachine the mating surface of the caps and then line bore/hone the main bearing bore. I had one done a couple years ago for roughly 1000 if I remember correctly. I think they even used new caps. The biggest downside in your case is you have to pull the block and completely strip it
    The halfass fix if it’s not to bad is to have a shop polish the crap out of the crank to get it down a thousandth or 2
     
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  4. mile marker 27

    mile marker 27 Road Train Member

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    No fretting on the block or caps. Got the oil pump off and gears show wear, so it’s getting replaced.
     
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  5. W923

    W923 Road Train Member

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    That’s great because the fretting is a pita to fix.
    Would you post some pics of the wear on the pump gears…i believe they had a bunch from the celect years that something on the fixtures was off based on the way they wear. It’s really not important one way or the other just a curiosity
     
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  6. YardMule89

    YardMule89 Road Train Member

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    Fretting was a common issue on the high HP models mainly and was caused in part by the block flexing under heavy load. At one time Cummins came out with a girdle similar to what CAT uses to help strengthen the sidewalls of the block.
     
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  7. YardMule89

    YardMule89 Road Train Member

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    There was a period where the oil pump shafts were walking forward and the first symptom was loss of P/S usually.
     
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  8. mile marker 27

    mile marker 27 Road Train Member

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    I will but it’ll be this afternoon when I get back to the shop. It was mainly at the bottom of each tooth. As far as end play I didn’t have a magnetic dial to check it but just putting it in a vice and prying the gear with a screwdriver, it had to still be in tolerance .03-.05. Was really surprised at the lack of end play. I’d bet money, that this is the original oil pump. I’m gonna try and get the oil cooler/housing off too.
     
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  9. mile marker 27

    mile marker 27 Road Train Member

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    Wonder if one of those can still be found? If you ever run across a part number for that, I’d like to know.
     
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  10. mile marker 27

    mile marker 27 Road Train Member

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  11. Vampire

    Vampire Medium Load Member

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    I don’t care if you called him Sally on Tuesday’s and Mary on Thursday and he called you fast booty call. You guys have laid down a ton of great info here. :D
     
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