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Rear diff oil leak, What seal is do I order?

Discussion in '1st Gen. Tacomas (1995-2004)' started by 2003toyotatacoma, Jun 11, 2012.

  1. Jun 11, 2012 at 9:56 AM
    #1
    2003toyotatacoma

    2003toyotatacoma [OP] Member

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    Tanner
    Las Cruces, NM
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    03 Taco prerunner
    Stock
    Taco diff.jpg
    After pulling a car on a trailer for 700 plus miles with my Taco, I noticed the rear diff/axle area covered in diff oil spray. I then sprayed off the entire axle with engine cleaner, pressure washed off all the oil and waited for a leak to spring up so I could narrow down the area/leak. I did check the "diff oil" b/c I thought that it would be low from the oil leak, and found out that the oil was a coffee creamer color. So I drained it and replaced it with new diff fluid. After driving and not finding any leak yet, I parked the Taco backwards on my inclined driveway overnight, the oil then began to leak from the front bottom of the diff where the drive shaft is attached. Below is the picture of what I found.

    2003 Taco V6


    My question is, "What is the name of the "BEST" seal that I need to order to stop this leak?" Also, I did replace both of the outer axle seals recently, so its not the axles seals. I did not find any other areas leaking top, bottom or rear side, only the front of diff.

    Also is there a video link showing how to go about this job?

    Thanks for any help..new guy
     
  2. Jun 11, 2012 at 9:58 AM
    #2
    2003toyotatacoma

    2003toyotatacoma [OP] Member

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    taco diff art.jpg

    The leak began in the red circle..
     
  3. Jun 11, 2012 at 10:04 AM
    #3
    BamaToy1997

    BamaToy1997 Wheel Bearing Master

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    That sir, is your pinion seal. You have to remove the driveshaft, then your pinion yoke. I would suggest inspecting the yoke to make sure that you don't have something caught up in it, or a burr on the yoke. Then replace the seal.
     
  4. Jun 11, 2012 at 10:13 AM
    #4
    2003toyotatacoma

    2003toyotatacoma [OP] Member

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    What is the BEST replacement seal? Should I get one from toyota? I usually get all my parts from Oreillys...
     
  5. Jun 11, 2012 at 10:41 AM
    #5
    Digiratus

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    In addition to what BamaToy mentions, you may have some bearing issues going on also. It is never good when your diff oil looks like coffee creamer. That is an indication that water got into the diff oil which can ruin bearings in short order. The leaking seal could be a result of the pinion bearing going bad. Does the pinion shaft wiggle or move from side to side at all? Can you move it by hand?
     
  6. Jun 11, 2012 at 11:01 AM
    #6
    skytower

    skytower Well-Known Member

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    Make sure your breather is functional. Towing causes a quick build-up of pressure, which can force gear oil out of an otherwise good seal, if the breather is restricted. Spiders, and dirt love to block them up.
     

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