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Torque on Lexus front diff drain plug?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by ToyoCoMo, May 26, 2022.

  1. May 26, 2022 at 10:15 PM
    #1
    ToyoCoMo

    ToyoCoMo [OP] Well-Known Member

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    I'm curious what the torque on the front diff drain plug needs to be (Lexus part #90341-24016). The stock drain plug torques to 48 lb-ft. I decided to replace it completely after running in to the same issue a lot of other 2nd gen owners have run in to with stripping this plug. For now, I have it torqued to 40lb-ft.

    Thanks for help!

    P.S. I appreciate all the resources on this site. I lurk a lot and finding a solution for the getting the plug off after I stripped it on here was invaluable. I ended up getting the plug off using a butane torch to heat the plug up, hit it with a hammer a few times, and then using a cold chisel and a ball peen hammer to rotate that bitch off. A pic of the aftermath:

    PXL_20220527_011003304.MP.jpg
     
  2. May 26, 2022 at 11:06 PM
    #2
    wi_taco

    wi_taco My skid plates give rocks taco flavored kisses

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    Good idea to switch that plug. This might be a dumb question to answer your question, but why wouldn’t it be the same torque value?
     
  3. May 26, 2022 at 11:18 PM
    #3
    ToyoCoMo

    ToyoCoMo [OP] Well-Known Member

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    Not a dumb question at all. I was just afraid to over torque it and find myself in a situation where I snap the new bolt or I have issues getting it off again in 30k miles.
     
    wi_taco[QUOTED] likes this.
  4. May 26, 2022 at 11:23 PM
    #4
    wi_taco

    wi_taco My skid plates give rocks taco flavored kisses

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    Makes sense. I’d do the 48 lb/ft as specified for the drain and be sure to use a new gasket/washer. I’ve done mine with the same plug and it comes out easy now (so much better than the stupid stock one).
     
    tacoman45 likes this.
  5. May 26, 2022 at 11:32 PM
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    muddog321

    muddog321 Well-Known Member

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  6. May 27, 2022 at 8:40 AM
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    ToyoCoMo

    ToyoCoMo [OP] Well-Known Member

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    Sweet, thanks for the response! I did buy a new gasket for the plug. I'm looking forward to not having to do deal with that damn drain plug again in 30k haha.
     
    wi_taco[QUOTED] likes this.
  7. May 27, 2022 at 8:40 AM
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    ToyoCoMo

    ToyoCoMo [OP] Well-Known Member

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  8. May 27, 2022 at 10:45 AM
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    Chuy

    Chuy Well-Known Member

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    If I recall correctly, I couldn't get my torque wrench in there. Went by feel. I also go 60K since I use synthetic gear fluid. On front diff and transfer case only. Do 30K in rear since I have mechanical LSD.
     
    ToyoCoMo[OP] likes this.
  9. May 27, 2022 at 10:55 AM
    #9
    b_r_o

    b_r_o Beef jerky time

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    48 lb/ft seems excessive. Personally I'd treat it more like a spark plug and go somewhere 18-20 lb/ft. That way you'll get a few uses out of the washer and it won't get roached on the first tightnening

    The problem with these drain plugs is the diameter of the threads is way bigger than the diameter of the head the socket is grabbing.

    It's not holding the whole truck together, all you have to do is squeeze the washer a little and it's good. Easy does it
     
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  10. May 27, 2022 at 1:15 PM
    #10
    TnShooter

    TnShooter The TacomaWorld Stray

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    The front diff drain plug uses a big copper washer looking washer thing for the seal. I went with 48 and reused my old plug.

    I think the whole reason the front drain plug is an issue is

    1. Time between fluid changes
    2. It’s an Allen
    3. It’s a fairly big plug that has lots of surface area on the face of the sealing area. The seal washer is 32mm in diameter. And it is not the crush type like the fill plug uses.
     
    ToyoCoMo[OP] likes this.
  11. May 27, 2022 at 7:21 PM
    #11
    6 gearT444E

    6 gearT444E Certified Electron Pusher

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    Hand tight and a 1/4 turn more. That plug likes to lock up in there.
     
  12. May 28, 2022 at 7:49 PM
    #12
    vettaco

    vettaco Well-Known Member

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    I've always just use vise grips on those type of drain plugs/bolts if I feel even a hint that I'm going to round off the allen or whatever head is on the plug. You can hit the vise grips pretty darn hard with a hammer if you need to.
     
  13. May 28, 2022 at 11:37 PM
    #13
    6 gearT444E

    6 gearT444E Certified Electron Pusher

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    not sure how you’d get vice grips on the drain plug it is recessed into the housing when fully seated.
     
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  14. May 30, 2022 at 11:01 AM
    #14
    vettaco

    vettaco Well-Known Member

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    Oops, sorry to muddy up the discussion. I don't have a front diff so I guess I've never run into a plug that's recessed.
     
    6 gearT444E[QUOTED] likes this.

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