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So changed my diff oil and saw this

Discussion in '3rd Gen Tundras (2014+)' started by texasrho83, Jun 9, 2019.

  1. Jun 10, 2019 at 8:40 AM
    #31
    texasrho83

    texasrho83 [OP] Teacher in a Tundra

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    I've done a little..
    I’ve got an appt to let the local dealer take a look at it.
     
    JohnLakeman and ColoradoTJ like this.
  2. Jun 10, 2019 at 3:17 PM
    #32
    texasrho83

    texasrho83 [OP] Teacher in a Tundra

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    I've done a little..
    Dealer won’t do anything about it. Tech says it’s in “normal condition”. I told them it better be in writing on my ticket and I’m gonna keep it so that if my diff goes, I can show that the dealer didn’t wanna touch it.
     
  3. Jun 10, 2019 at 3:19 PM
    #33
    FirstGenVol

    FirstGenVol New Member

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    It might be worth calling Toyota corporate and showing them the pictures. Worst case they agree with the dealer. You've got nothing to lose at this point.
     
  4. Jun 10, 2019 at 3:34 PM
    #34
    mojojo

    mojojo New Member

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    That is what I was thinking would happen.

    However, your strategy is good imo. Keep your RO with date and mileage documented. If you do have a future issue, you will have some ground to stand on.

    ...but I think you're going to be just fine.

    Side note: you really should keep all of your ROs, because too often they are overlooked.

    I really don't think Toyota is going to disagree with this dealer's observation. I understand that you are put off by the size of this debris, but there's nothing notable about it that would prove it is from an internal component.

    ...I would be concerned if there was legible writing (as in a bearing race), or it was a shape that was easily identifiable (as in a broken gear tooth).

    I highly doubt that this finding will ever materialize into anything more for the OP.
     
    Last edited: Jun 10, 2019
    JohnLakeman and texasrho83 [OP] like this.
  5. Jun 10, 2019 at 4:29 PM
    #35
    landphil

    landphil I know nothing, and I’m still confused.

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    From what I can see by looking at your pictures on my phone, those are machining chips from the manufacturing of the axle housing that found their way to the magnet. It’s not altogether uncommon to find on the first drain of a diff, but they are alarming.

    For peace of mind, you can try cutting them with side cutters. If they are soft enough to cut, they are not from a bearing or a gear. Not that flakes from a bearing or chunks from a gear look like that.

    Failed thrust washer from a differential spider gear or side gear is possible if the washers Toyota uses are magnetic, but I’m not sure they are. Most are not.

    Any burnouts / one-tire-fires in your history?
     
    Sunnier, JohnLakeman, 15whtrd and 3 others like this.
  6. Jun 10, 2019 at 4:34 PM
    #36
    texasrho83

    texasrho83 [OP] Teacher in a Tundra

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    I've done a little..
    It just stinks that the closest dealership to my house is not one I want to do business with...worst customer service too.
     
  7. Jun 10, 2019 at 4:34 PM
    #37
    landphil

    landphil I know nothing, and I’m still confused.

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    I edited my post. Can you clean those two large flakes and post a close-up photo.
     
  8. Jun 10, 2019 at 4:36 PM
    #38
    ColoradoTJ

    ColoradoTJ jberry813fanclub.com Staff Member

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    Good point on the testing of materials Phil. Learn something new from you all the time.

    Then again, I have never seen anything like this come from any of my differentials either. Guess sometimes the QC inspector has bad days as well.

    This is why I drop fluids pretty quickly on a newly purchased vehicle. (5-10k miles)
     
  9. Jun 10, 2019 at 4:42 PM
    #39
    texasrho83

    texasrho83 [OP] Teacher in a Tundra

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    Negative. Daddy don’t buy my tires.
     
  10. Jun 10, 2019 at 4:48 PM
    #40
    landphil

    landphil I know nothing, and I’m still confused.

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    Haha! Good. Pretty unlikely those flakes are munched up thrust washers then.
     
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  11. Jun 10, 2019 at 4:50 PM
    #41
    ColoradoTJ

    ColoradoTJ jberry813fanclub.com Staff Member

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    This is my AAM 10.5” rear axle in my rock crawler (05 GM 2500 gas model truck). This had 160k miles on it, and I just swapped the carrier, gears, and sent it. Four years of some serious abuse, and I never get anything like that on my magnet. Some of you know first hand what kind of abuse.

    6FE1ECF5-D78B-4D8F-B108-9CBEF414469C.jpg

    This was around 1 month ago.

    This would totally drive me nuts. I would be pulling the driveshaft, sliding the axle shafts out and pull the third member to see the gears, but I’m stupid like that. I wonder if a boroscope camera would be a better option?

    C1082BA3-9546-4950-ACED-CDA1D215A260.jpg
     
  12. Jun 10, 2019 at 4:51 PM
    #42
    texasrho83

    texasrho83 [OP] Teacher in a Tundra

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    I've done a little..
    E23FA80E-D736-4B9C-845A-0CA438E840E9.jpg C7C3B1D3-DF11-4C10-B4E0-3E54436B5BE2.jpg
    Cleaned the biggest pieces up a little
     
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  13. Jun 10, 2019 at 4:53 PM
    #43
    landphil

    landphil I know nothing, and I’m still confused.

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    Totally cuttings from drilling / machining the housing.
     
  14. Jun 10, 2019 at 5:50 PM
    #44
    JohnLakeman

    JohnLakeman Burning Internet Daylight

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    Yup. I agree. First pic of that big one has an "as cast" surface finish in my opinion. Manufacturing debris. Not clear on why it wasn't cleaned out, but if it sinks to the bottom and stays there, it isn't going to do any harm. :thumbsup:
     
  15. Jun 10, 2019 at 6:36 PM
    #45
    ColoradoTJ

    ColoradoTJ jberry813fanclub.com Staff Member

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    I would agree. Magnet did it’s job.

    Now we can all drink some beer/whiskey to celebrate!!!

    Ok, at least I will. lol
     
  16. Jun 10, 2019 at 8:01 PM
    #46
    texasrho83

    texasrho83 [OP] Teacher in a Tundra

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    I've done a little..
    I’m on my 2nd whiskey as we speak lol.
     
  17. Jun 10, 2019 at 8:02 PM
    #47
    texasrho83

    texasrho83 [OP] Teacher in a Tundra

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    Whew! Hope you’re right. Thanks for the sharp eye and help on this.
     
  18. Jun 10, 2019 at 8:05 PM
    #48
    texasrho83

    texasrho83 [OP] Teacher in a Tundra

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    I've done a little..
    Thanks for the confirmation. I guess if the diff should fail, I’ve got <8k miles on my power train warranty and another 25k after that on my extended lol
     
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  19. Jun 10, 2019 at 9:48 PM
    #49
    landphil

    landphil I know nothing, and I’m still confused.

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    Wouldn’t hurt to change the oil again before that warranty runs out just to see what’s new on the magnet, but I’m pretty confident you’re good.
     
  20. Jun 11, 2019 at 5:24 AM
    #50
    Trikerider

    Trikerider New Member

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    I had similar thing on my magnet at when I changed at 60k miles, bought truck used at 56k miles. Was hoping it was machining bits leftover from manufacture as it didn't look like any of the internal parts had failed. I never did get it to a Toyota dealer yet, plan to get there soon to get Trans fluid changed and will bring this up. It was a cpo so I have a drivetrain warranty up to 100k miles. This and over winter I had would occasionally have the cold startup timing chain slap only two 'problems' so far.
     
  21. Jun 11, 2019 at 6:14 AM
    #51
    SRM18TRD

    SRM18TRD New Member

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    I had one of those at 10k..

    9BA9DEC3-BC9B-40CF-A911-93F248028EF1.jpg
    4242CDD7-51B0-4D3B-BE17-336368037B60.jpg
     
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  22. Jun 11, 2019 at 6:40 AM
    #52
    texasrho83

    texasrho83 [OP] Teacher in a Tundra

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    I wouldn't have freaked so bad over yours... mine had a piece of the Great Wall of China stuck to it
     
  23. Jun 11, 2019 at 7:21 AM
    #53
    ColoradoTJ

    ColoradoTJ jberry813fanclub.com Staff Member

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    :eek:
     
  24. Jun 12, 2019 at 4:27 PM
    #54
    TRD423

    TRD423 New Member

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    I changed all my differential fluids at 35k, owned my truck since new, and this is what came out of the rear.

    BFCD0748-E30D-48F6-8C36-237AE7A88701.jpg
     
  25. Jun 12, 2019 at 4:31 PM
    #55
    RitcheyRch

    RitcheyRch New Member

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    This thread is making me consider changing my diff fluid and I only have 19K miles on my 2012.
     
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  26. Jun 12, 2019 at 4:33 PM
    #56
    SRM18TRD

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    I’m thinking you should, especially if you’re using that supercharger!
     
  27. Jun 12, 2019 at 4:40 PM
    #57
    FirstGenVol

    FirstGenVol New Member

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    Really no reason not to. It takes less than 30 minutes and doesn't cost much.
     
  28. Jun 12, 2019 at 6:14 PM
    #58
    texasrho83

    texasrho83 [OP] Teacher in a Tundra

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    I've done a little..
    IF you don't buy the 75w-85 oil..... that stuff costs a small fortune.
     

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