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Is this a transfer case seal leak?

Discussion in '2.5 Gen Tundras (2014-2021)' started by SpeshulED, Dec 3, 2018.

  1. Dec 3, 2018 at 6:01 PM
    #1
    SpeshulED

    SpeshulED [OP] New Member

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    Need some advise. I have a leaving that’s coming from the transfer case. I unbolted and cleaned up the transfer case skid plate and saw a marginal amount of oil also on the t case. Cleaned and bolted everything back up and the leak has come back.

    What are your thoughts? If so, how hard is this to do and are there any posted DIY’s?

    DF434965-5590-45B5-9CCE-2D383B0121B0.jpg
    B93D42E0-75DE-487D-8C39-793F6C103B36.jpg
     
  2. Dec 4, 2018 at 5:09 AM
    #2
    15whtrd

    15whtrd Mr. Blonde

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    How many miles do you have? Maybe you’re still under powertrain warranty.
     
  3. Dec 4, 2018 at 5:11 AM
    #3
    15whtrd

    15whtrd Mr. Blonde

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    Looks like it’s leaking at the output shaft seal.
     
  4. Dec 4, 2018 at 5:25 AM
    #4
    Black Wolf

    Black Wolf Where's my popcorn salt? Damnit

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    Same observation here..
     
    15whtrd likes this.
  5. Dec 4, 2018 at 5:26 AM
    #5
    ColoradoTJ

    ColoradoTJ So there I was.... Staff Member

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    This ^^

    This is not a horrible job to fix.

    Torque wrench
    Socket set and various hand tools
    Seal install tool
    Lock tight

    Mark driveshaft position to minimize vibrations.

    Make sure seal is installed flush, lube seal up before installing the yoke to the output shaft. You don’t want to damage the new seal.

    Torque output shaft nut and driveshaft bolts to recommended specifications.
     
  6. Dec 4, 2018 at 5:29 AM
    #6
    15whtrd

    15whtrd Mr. Blonde

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    So it can be fixed right on the truck? Just remove driveshaft, pull out seal out and tap the new seal in place?
     
    ColoradoTJ likes this.
  7. Dec 4, 2018 at 5:31 AM
    #7
    ColoradoTJ

    ColoradoTJ So there I was.... Staff Member

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    Yes sir.
     
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  8. Dec 4, 2018 at 5:35 AM
    #8
    15whtrd

    15whtrd Mr. Blonde

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    I love it when they build stuff like that!
     
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  9. Dec 9, 2018 at 12:02 AM
    #9
    SpeshulED

    SpeshulED [OP] New Member

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    No write ups on it?
     
  10. Dec 9, 2018 at 4:33 AM
    #10
    ColoradoTJ

    ColoradoTJ So there I was.... Staff Member

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    YouTube has some on the Tacoma’s, same process.
     
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  11. Mar 2, 2020 at 11:28 AM
    #11
    UTTundra

    UTTundra New Member

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    Did you ever get this fixed? Mine developed a leak last year. Unfortunately, mine was leaking from the front output shaft, and the front seal cannot be replaced "on the truck"...at least not for my Gen 3. The T-case has to be removed and opened to replace the $5 seal. At least $1800 according to Toyota. I drained mine and used some AT-205 with new fluid. That seemed to help for several months, but just noticed it was leaking again yesterday.
     
  12. Mar 2, 2020 at 11:52 AM
    #12
    JohnLakeman

    JohnLakeman Burning Internet Daylight

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    Only suggestion I would add is to cover the shaft splines with electrical tape before installing the seal...might be some sharp edges on the splines.
     
  13. Mar 12, 2020 at 11:58 PM
    #13
    SpeshulED

    SpeshulED [OP] New Member

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    I did. It ended up costing me $600
     
  14. Mar 13, 2020 at 8:33 PM
    #14
    SuperWhite20

    SuperWhite20 New Member

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    Just loosen the driveshaft at the T/C. Push shaft back just a little and drop the front of the shaft. Push shaft aside. Remove yoke and seal. Check the yoke for a seal groove. Replace it if it’s deep. Make sure to not lose the spring in the seal after it’s put in p,ace. Reinstall shaft. Check fluid level.
     
    Last edited: Mar 13, 2020
  15. Apr 5, 2020 at 4:39 PM
    #15
    zpoulsen

    zpoulsen -

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    did the transfer case need to be opened up to replace the seal? Did Toyota do the work?
     
  16. Jun 19, 2020 at 4:30 PM
    #16
    alpinepro4

    alpinepro4 What is your MPG Today!

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    You fix your seal? I have the same broken seal.
     
  17. Jun 20, 2020 at 12:39 PM
    #17
    zpoulsen

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    thearborbarber likes this.
  18. Jun 20, 2020 at 2:50 PM
    #18
    alpinepro4

    alpinepro4 What is your MPG Today!

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    Good write up. I called my dealer and it’s still under warranty. Good thing since my warranty runs out July 28th. Now starting to think I might pay to extend it. That whole other topic.
     

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