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2016 Tundra Maintenance Fail (Warning to Others, looking for advice)

Discussion in '2.5 Gen Tundras (2014-2021)' started by TigerTanker, Jun 17, 2021.

  1. Jun 17, 2021 at 9:48 AM
    #31
    TigerTanker

    TigerTanker [OP] Tyranny doesn't leap, it creeps

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    I am so mechanically retarded, I don't even know what questions to ask.

    This is why I go to the "trusted dealer that is familiar with their own vehicles, specially trained to service and repair them. Additionally, our awesome staff will make sure your vehicle is taken care of to ensure your warranty and provide you with long term satisfaction with your vehicle!"
     
  2. Jun 17, 2021 at 9:50 AM
    #32
    TigerTanker

    TigerTanker [OP] Tyranny doesn't leap, it creeps

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    Who would I take it to? And I'm assuming that isn't cheap or free. There's also this issue about the rear bearing, that I've read on other threads is a problem with these Tundras, especially the right rear as in my case.
     
  3. Jun 17, 2021 at 9:51 AM
    #33
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    Sorry, maybe I didn't make it clear, but my 1 k inspection after rebuild would consist of checking an oil sample and placing the truck on a lift or other and cycling the diff manually by hand to listen and feel for any abnormalities. That's about it.
     
    TigerTanker [OP] likes this.
  4. Jun 17, 2021 at 9:54 AM
    #34
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    I would take it to a differential and driveshaft specialist if you can't handle the task. They are out there.
     
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  5. Jun 17, 2021 at 9:54 AM
    #35
    socaltundra951

    socaltundra951 Gentlemen Prefer Black Tundras

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    Threads like these and stories from folks I know that have experienced the same are why I don't use dealerships for any maintenance needs.

    A trustworthy mechanic that you can rely is a valuable thing to have. I found mine through word of mouth reputation and I try to send business his way when I can.
     
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  6. Jun 17, 2021 at 10:14 AM
    #36
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    Let me tell you a story, 1990's Ford started using these fuel line fittings that have a concealed inside diameter spring that snaps over a flange circumference on the outside diameter of the fuel line. So, I couldn't remove my fuel filter because of the concealed spring. So I took it to the dealer only to watch the tech beat it to death with a #4 shop hammer for a solid thirty minutes. It was still on there and I was getting really worried about being stranded. Then he went inside and I guess sought assistance from some source unknown to me. Anyway after about an hour he shows up with a small tool to clamp around the outside diameter of the line and he slides it inside the fitting to open the spring diameter enough to pull the line out of the fitting. Five minutes later the new filter is snapped on and he's filling out the paperwork. Long story short they charged me $239 to beat the hell out of my truck. Needless to say I quickly purchased the ten dollar tool set!
     
    Booney likes this.
  7. Jun 17, 2021 at 12:38 PM
    #37
    RussellVaughan

    RussellVaughan New Member

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    There's no reason the diff fluid should be dark after 300 miles! More likely it wasn't actually changed when they claimed it was.
     
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  8. Jun 17, 2021 at 1:05 PM
    #38
    cooper4x4

    cooper4x4 New Member

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    Did you see the "metal flakes" they referred to? Were they chunks or just a metallic paste?

    Diffs will wear over time. That's why the drain plug is normally magnetic to catch the fine metallic paste/dust.

    I wouldn't worry about it at all unless you're hearing some noise. If you're really worried, you can pull the rear third member and inspect the gears for damage.
     
    Booney likes this.
  9. Jun 17, 2021 at 3:58 PM
    #39
    parkerbows

    parkerbows New Member

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    Wonder how much towing etc.. is considered severe or special?
     
  10. Jun 17, 2021 at 4:19 PM
    #40
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    I will take a shot at your question and give you my best swag. Anything over 70% of max weight capacity and or over 40% of your total mileage. Operating various systems at around 70% of their max capacity usually delivers good results.
     
  11. Jun 17, 2021 at 4:23 PM
    #41
    parkerbows

    parkerbows New Member

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    ok cool thanks. i probably tow 10 hours a year
     
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  12. Jun 17, 2021 at 4:40 PM
    #42
    LuvCRVs

    LuvCRVs New Member

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    Okay I am ignorant. What is the difference between the metal flake and particles you mention?
     
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  13. Jun 17, 2021 at 4:45 PM
    #43
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    My magnet says there is very little difference. Once you hear noise while driving it's too late! Bearings are done gears are getting dangerously close too.
     
  14. Jun 17, 2021 at 5:23 PM
    #44
    LuvCRVs

    LuvCRVs New Member

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    So the flakes are metal and the particles are metal?
     
  15. Jun 17, 2021 at 5:24 PM
    #45
    endagon

    endagon New Member

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    If you crawl under the truck you'll see the wheel speed sensors bolted up to the front side of the wheel bearing assembly outboard of the oil seal. That means the metal particles would have to be floating around inside the bearing itself.

    The axle tube has an oil seal that goes in before the axle and wheel bearing assembly is bolted in. Toyota has liked to used sealed & greased ball bearings on their rear axles for a long time. If diff oil gets past the seal and into the bearing it's not good. Oil dilutes grease.

    My old Taco wasn't cared for too well by its first owner. I drained the factory diff oil when I bought it at 120k. I could hear the oil hiss as it slowly rolled out of the drain hole in a sparkly sludge. Drove that truck daily for 4 years and I never had to change anything in the rear end sans the fluid. The gears were a tad whiny those first few cold miles but it would get quiet soon enough so they must not have worn too badly. Its wheel bearings were still fine the day I sold it because the oil seals never let the nasty oil into them.
     
  16. Jun 17, 2021 at 6:10 PM
    #46
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    So there is a seal on both sides of the axle bearing. Very interesting. New to me. However, that would only protect the axle bearings from the metal shavings, and only if the internal seal didn't fall. What about the other load bearing surfaces internally for things like the spider and side gears? Are they all just oil bathed? Would they not experience excessive wear with polluted or contaminated oil?
     
  17. Jun 17, 2021 at 6:53 PM
    #47
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    Well op, If I am analyzing this new information correctly, then it appears to me you are still needing to have it all taken apart, cleaned, inspected and rebuilt with new bearings, seals, retainer rings, o rings, gasket, and oil. No other way that I can see to really be sure that there are not some shavings or particles internally that could chew on the various components. Good luck with the dealer, hopefully they will accept some responsibility.
     
  18. Jun 17, 2021 at 7:03 PM
    #48
    Green Thunder

    Green Thunder Intergalactic JAFO

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    Well, this thread I think highlights why lubricants should be changed more often than what the manual states.

    Don’t forget to change your transfer case fluid. There is less fluid in there than your diffs.

    And I’m changing my diffs and transfer case sooner than 30k miles now.
     
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  19. Jun 17, 2021 at 7:08 PM
    #49
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    At 100k or ten years I will be changing the bearings and seals regardless of there condition, I don't like roadside assistance.
     
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  20. Jun 17, 2021 at 7:25 PM
    #50
    hagrid

    hagrid It's called "satire"... look it up.

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    Good Lord, I hope not. Need to save money for fuel.
    Still cant envision how vast quantities of gear case filings make their way past a roller bearing AND an oil seal to foul a wheel speed sensor.
     
  21. Jun 17, 2021 at 7:30 PM
    #51
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    Maybe I'm wrong, but I think the speed sensor ring is between the bearing and the diff. So, if I'm correct the filing could have come from either the bearing or the diff and without disassembly it is nothing more than a guess.
     
  22. Jun 17, 2021 at 7:33 PM
    #52
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    I will add, my old Ford product would trigger abs fault because worn bearing would allow the speed sensor ring to chew off the sensor tip due to close clearance.
     
  23. Jun 18, 2021 at 3:27 AM
    #53
    Bammer

    Bammer I'm disinclined to acquiesce your request.

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    Changing more often isn't the solution, proper maintenance is, which the dealer failed to provide to the OP.
     
  24. Jun 18, 2021 at 4:42 PM
    #54
    endagon

    endagon New Member

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    The only way I can think of that happening is the diff breather one-way valve being plugged, so when everything expands as it gets hot, out it goes through the path of least resistance
     
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  25. Jun 18, 2021 at 4:50 PM
    #55
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    Looks like the design is...wheel then seal then bearing then abs ring then seal. Yes, there are other items, but to keep it simple this means a wasted bearing can shed material right beside the abs ring or the seal can leak between the pumkin and the abs ring.
     
  26. Jun 18, 2021 at 4:52 PM
    #56
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    Would not surprise me one bit if a worn bearing led to the abs ring literally chewing off the sensor tip causing the issue for OP
     
  27. Jun 18, 2021 at 4:55 PM
    #57
    endagon

    endagon New Member

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  28. Jun 18, 2021 at 5:03 PM
    #58
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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  29. Jun 18, 2021 at 5:44 PM
    #59
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    Found this and it appears very similar to the tone ring just reads revolutions on the face vs the outside diameter. Still seems like a worn bearing could allow lateral movement and each of the drilled holes could literally chew on the sensor tip during axle rotation. Again it is also located between the bearing and the inner seal. Screenshot_20210618-193758.jpg
    Edit this doesn't seem right either, so I will keep looking for answers.
     
    Last edited: Jun 18, 2021
  30. Jun 18, 2021 at 6:01 PM
    #60
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    No way this^^ would be the answer, apparently by looking at the truck and looking at this, the sensor is in fact reading between the outside seal and the bearing. So I guess the debris has come from the worn bearing or was in the housing in the form of a machining chip ever since initial assembly.
     

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