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Front Differential Leak?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by ScottBright, Nov 4, 2022.

  1. Nov 4, 2022 at 4:15 PM
    #1
    ScottBright

    ScottBright [OP] Member

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    I woke up this morning to what I believe is a front diff leak. I put new cv axles in but that was about 6 months ago and I have never had any issues. I’m assuming I just need a new gasket for my front diff? Let me know what you guys think. And thanks.

    B97C942D-1B33-4BA2-AF63-55CDC7D82419.jpg
     

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  2. Nov 4, 2022 at 4:37 PM
    #2
    6 gearT444E

    6 gearT444E Certified Electron Pusher

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    Check the torque on the fil an drain plugs and clean it up first. Looks to me like it’s running down the diff from there.
     
  3. Nov 4, 2022 at 4:44 PM
    #3
    ScottBright

    ScottBright [OP] Member

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    Just got up under and checked it. Looks like busted cv axle seal on my drivers side. Seems like it’s leaking down from there. I saw lots of YouTube videos on how to fix it so I’ll do my research.
     
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  4. Nov 4, 2022 at 4:49 PM
    #4
    6 gearT444E

    6 gearT444E Certified Electron Pusher

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    that is a fairly common occurrence. Especially if you just changed the axle. Those seals are finicky.
     
  5. Nov 4, 2022 at 4:53 PM
    #5
    eon_blue

    eon_blue Most Improved Member

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    I had to redo the axle seal on my 1st gen a few times before getting it right, if they aren't seated 110% correctly (correct depth all around, not too far in or out) they will leak. It was frustrating
     
  6. Nov 4, 2022 at 7:02 PM
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    ScottBright

    ScottBright [OP] Member

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    Should I just fix the side that’s leaking. Or swap them both out. I’d hate to do both and end up make both sides leak.
     
  7. Nov 4, 2022 at 7:35 PM
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    winkel

    winkel Well-Known Member

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    I would just fix the side that's leaking. If it isn't broken, don't break it.
     
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  8. Nov 5, 2022 at 2:15 PM
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    ScottBright

    ScottBright [OP] Member

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    Could someone post a link to the seal part I would need. When I look it up they all say axle shaft seal, rear. Does it have to be for the front? It’s for a 2005 Tacoma. Trd sport. 4x4
     
  9. Nov 5, 2022 at 2:26 PM
    #9
    Strictlytoyz

    Strictlytoyz Well-Known Member

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  10. Nov 5, 2022 at 2:31 PM
    #10
    AdamM

    AdamM Semi-pro aardvark wrangler

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    Check the needle bearing for excess play. If the needle bearing is worn out, changing the seal won't work for long. I just went through this.
     
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  11. Nov 5, 2022 at 2:41 PM
    #11
    Jeffch

    Jeffch Well-Known Member

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    Kinda think you’d know if the axle was broken for sure.
    But I haven’t done it so.
    Driver side axle seal.
    You may have a bad needle bearing that scored axle and is leaking.
    Did you have a vibe at 35-40 that went away in 4wheel?
     
  12. Nov 5, 2022 at 2:55 PM
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    ScottBright

    ScottBright [OP] Member

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    How do I check the needle bearing for excess play? I haven’t taken it in four wheel yet since I only use it when I go in the snow a few times a year. If the needle bearing is bad what would be needed to fix that?
     
  13. Nov 5, 2022 at 8:18 PM
    #13
    AdamM

    AdamM Semi-pro aardvark wrangler

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    Jack the truck up and and see how much wiggle you have where the cv axle enters the front diff. For comparison, just use the passenger side cv. If there's a bunch of slop, in comparison to the passenger side, you've probably got a bad needle bearing.

    To fix it, you'll either have to replace it with another needle bearing, or an aftermarket bushing. There are a few companies that make budhings, ecgs and yukon gear, off the top of my head. You could also need a new cv, but that's unlikely if you've just replaced it.
     
  14. Nov 6, 2022 at 2:11 AM
    #14
    ScottBright

    ScottBright [OP] Member

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    Ok after further research I ordered a new seal and am going to upgrade to the ECGS bearing and go away from the needle bearing. It’s makes sense to just be safe and upgrade the away from the needle bearing since I have this leak and my truck is lifted 3 inches already. I don’t have the vibe. I do have a groan noise when the truck is cold. But after 5 or so minutes once it warms up it goes away.
     
  15. Nov 8, 2022 at 10:05 AM
    #15
    Jeffch

    Jeffch Well-Known Member

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    3 inch lift did you do a diff drop?
     

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