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Perpetually leaking axle seals

Discussion in '1st Gen. Tacomas (1995-2004)' started by JohnEDingo, May 18, 2020.

  1. May 18, 2020 at 4:28 PM
    #1
    JohnEDingo

    JohnEDingo [OP] New Member

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    Dear Tacoma World,

    I had the axle seals replaced in the 2wd rear of my truck, and 2 weeks later they are leaking again. They were professionally replaced so I assume they did it correctly. Does anyone have any ideas about what is causing the problem and preventing this from occurring again? clogged diff breather? sludge in the casing fouling seals? should I dab some rtv on the inner seals and pray? let me know what you guys think. Thank you very much
     
  2. May 18, 2020 at 4:29 PM
    #2
    1997tacomav6

    1997tacomav6 V6 5sp,RegCab,TVS1320 Supercharger,Haltech, 780k

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    Clogged or defective breather valve is probably the biggest issue,

    Did you replace that 10.00 part?
     
  3. May 18, 2020 at 4:59 PM
    #3
    Black DOG Lila

    Black DOG Lila Well-Known Member

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    Welcome aboard new member
     
  4. May 18, 2020 at 6:26 PM
    #4
    JohnEDingo

    JohnEDingo [OP] New Member

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    thanks for the welcome, to answer the others, no i did not replace the breather, I will give that a try first thing. Thanks All!
     
    GQ7227 likes this.
  5. May 18, 2020 at 6:40 PM
    #5
    JohnEDingo

    JohnEDingo [OP] New Member

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    does anyone have a part # for the diff breather or a rec on where to get one? thanks
     
  6. May 18, 2020 at 6:42 PM
    #6
    Babybluetaco

    Babybluetaco Well-Known Member

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  7. May 18, 2020 at 6:57 PM
    #7
    CrustyTaco

    CrustyTaco Well-Known Member

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    The Toyota part num for the breather is 90930-03031. You can also do a breather relocate that will route the breather valve higher up in the bed to keep it from getting clogged. I routed mine up behind the fuel filler neck. That job requires:

    Toyota P/N 90404-51319
    6ft of 1/4" ID fuel line (expect a tight fit)
    Dorman 924-284 (could use the Toyota one, but Dorman is cheaper and works)

     
    andywear and GQ7227 like this.
  8. May 18, 2020 at 7:02 PM
    #8
    JohnEDingo

    JohnEDingo [OP] New Member

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    Thanks, I will definitely relocate mine since I can't stand having the same problem more than once!
     
  9. May 18, 2020 at 7:12 PM
    #9
    Glamisman

    Glamisman Well-Known Member

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    I looked at a couple of you tube videos to re-acquaint myself with what is going on thinking that there is something "special" with Tacoma rear axles like there is with Hardbody axles. In one of the videos is clearly shows play in the bearing. Is it excessive, dont know. Could this cause a leak, yes. The other thing that I noticed is that it looks like the factory seal is a double lip seal whereas the replacement seal looks to be single lip, tough to tell from the video. Is this the case in your repair, dont know. This isnt that difficult of a job to have so many posts on the forum about rear axle leaks.
     
  10. May 18, 2020 at 7:25 PM
    #10
    koco

    koco Well-Known Member

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    Around $26,000 worth of unleaded in the fuel tank.
    If the breather clogs up the pressure buildup forces oil out of the seals. If the axle bearings are worn out then replacing seals is no good without first replacing the bearings.

    The leaking oil removes the grease from the axle bearings and they start to wear down more quickly.

    You can just clean the breather without replacing it. It is just a pretty simple part, you can spray it out and blow through it to make sure its clear then put it back in.
     
    High Noon likes this.

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