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DD15 Oil Pump and Orings. What happens when you believe paperwork.

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by LoneRanger, Jan 17, 2022.

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  1. Jan 17, 2022 #1
    LoneRanger

    LoneRanger Road Train Member

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    This is exactly why I don’t trust people and mechanics.

    supposedly these orings and pump as well as the manifold had been changed at 487k miles on the truck. It’s now sitting at 597k miles and the dates on the parts read 2012.

    Verify it’s changed and see for yourself before they put the parts on.

    orings shouldn’t break like plastic pieces. If the chip on the pump gear was there but the dates said 2018 I would have been ok and said pump failed. But no.

    Good thing I was able to get home to get it done after a 5 second low oil pressure warning. In Kentucky.

    B1655E31-C555-4022-B7A7-B6381BA12FE4.jpeg 68D782DD-D772-4960-85CD-0E841F2D734D.jpeg
     
    LoneRanger, Jan 17, 2022
    LoneRanger, Jan 17, 2022
    #1
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  3. Jan 17, 2022 #2
    Keepforgettingmypassword

    Keepforgettingmypassword Heavy Load Member

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    Wow. How did you know where to look, how long of a job is it?
     
    Keepforgettingmypassword, Jan 17, 2022
    Keepforgettingmypassword, Jan 17, 2022
    #2
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  4. Jan 17, 2022 #3
    LoneRanger

    LoneRanger Road Train Member

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    5-7 hours, if done right and it’s the pickup tubes on the pump. This has to be done at 500k maximum. I would at 250k after seeing this. That o-ring exploded in my hands. It’s hard as a rock.
     
    LoneRanger, Jan 17, 2022
    LoneRanger, Jan 17, 2022
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  5. Jan 17, 2022 #4
    Keepforgettingmypassword

    Keepforgettingmypassword Heavy Load Member

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    I'm glad you caught it. I'll get to mine in the spring. Frost bite last week took a couple days to get over.
    Thanks.
     
    Keepforgettingmypassword, Jan 17, 2022
    Keepforgettingmypassword, Jan 17, 2022
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  7. Jan 19, 2022 #5
    LoneRanger

    LoneRanger Road Train Member

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    What a difference in oil pressures.


    Fully warmed up idle pressure is at 25 Before was at 16

    high idle I’m at 33 previous at 23.

    7C31D3F6-F829-428C-82FC-B41DD4816C10.jpeg 41F291DC-3D43-4CEB-BE6C-0F7BD163DD96.jpeg
     
    LoneRanger, Jan 19, 2022
    LoneRanger, Jan 19, 2022
    #5
    Keepforgettingmypassword and God prefers Diesels Thank this.
  8. Jan 20, 2022 #6
    Keepforgettingmypassword

    Keepforgettingmypassword Heavy Load Member

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    I'm amazed at how fast you got it done. Impressive. Clean looking dash too. Mine not so much
     
    Keepforgettingmypassword, Jan 20, 2022
    Keepforgettingmypassword, Jan 20, 2022
    #6
  9. Jan 20, 2022 #7
    Smellfunny

    Smellfunny Road Train Member

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    I replace the pickup tube assembly when doing this job as well. I have seen those fail also. The Suction Manifold. They changed it because there were issues with it.
     
    Last edited: Jan 20, 2022
    Smellfunny, Jan 20, 2022
    Smellfunny, Jan 20, 2022
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    LoneRanger Thanks this.
  10. Jan 20, 2022 #8
    Keepforgettingmypassword

    Keepforgettingmypassword Heavy Load Member

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    Was that chip cause by the breaking of a o ring?
    I'm still slightly confused on how you new where to look?
    Was it the steady low pressure, or unable To build pressure?
    Was it the oil pump you had to remove, and then just did the tubes while you where there?
    I know it's a lot of questions. If you want to let it die I understand. I just love learning this stuff.
    I am aware why you started this post and it sux you where lied to. I just don't know what to say about that, I haven't been thru it yet. Most of my b.s. is me getting in my own way.
     
    Keepforgettingmypassword, Jan 20, 2022
    Keepforgettingmypassword, Jan 20, 2022
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  11. Jan 20, 2022 #9
    Smellfunny

    Smellfunny Road Train Member

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    Here is a great video showing replacement.
     
    Smellfunny, Jan 20, 2022
    Smellfunny, Jan 20, 2022
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  12. Jan 21, 2022 #10
    Oscar the KW

    Oscar the KW Going Tarpless

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    It’s a known issue on the DD motors, I’m not sure what year they supposedly fixed this but my 2018 has 42x,xxx miles and still has the same oil pressure it did when new.
     
    Oscar the KW, Jan 21, 2022
    Oscar the KW, Jan 21, 2022
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