1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Automatic Transmission - Drain Plug - Torque Spec?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by 2015WhiteOR, May 18, 2016.

  1. May 18, 2016 at 8:28 PM
    #1
    2015WhiteOR

    2015WhiteOR [OP] Well-Known Member

    Joined:
    Feb 2, 2015
    Member:
    #147773
    Messages:
    759
    Gender:
    Male
    USA
    Vehicle:
    2015 DCSB TRD Off Road
    The factory spec for the drain plug on the A750 transmission is 21 foot pounds.

    For those who have done a drain and fill, you know just how puny the drain plug bolt is.

    Has anyone here actually torqued the drain bolt to that spec? (21 foot pounds as measured by a torque wrench)

    I can get it torqued to 15 foot pounds, but as soon as I go for 20, I swear it feels like I'm going to strip the threads on the bolt or the pan.

    I'm thinking it comes with a crush washer from the factory and I'm just feeling the crushing of the washer, but I'd rather not have to buy a new pan this early in my ownership of my Taco.


    *edit - The reason I'm asking and why I care is, during my last drain and fill, I torqued the drain bolt to 15 foot pounds and just recently found that it leaked a little. I want to snug it up as tight as possible without stripping the threads.
     
  2. May 18, 2016 at 8:57 PM
    #2
    Lester Lugnut

    Lester Lugnut Well-Known Member

    Joined:
    Mar 3, 2010
    Member:
    #32477
    Messages:
    2,561
    Gender:
    Male
    N of Mex-S of Canada-E of LA-W of NC
    Vehicle:
    '15 Tacoma PreRunner V6 SR5 Auto
    I never torque drain plug bolts. Like you, I examine the bolt, the washer and then apply some common sense. It's worked for many years.

    I torque lugs(when at home) and would torque critical things like cyl. head bolts.

    Update - missed the last part of your comment - my bad.

    It's been my experience that many transmission pans bolts like brand new gaskets each and every time you drain/refill. Always change the drain plug gasket and overflow plug gasket on the A750E/A750F transmission fitted in 2nd Gen V6 Tacoma's. Go easy on the torque. If you see a small drip, slowly snug up the bolt head a bit more - easy does it. If you use a new gasket and the pan is OK, the leak will stop once you snug it just right. It's all done by feel.

    Drain plug/overflow plug use same gasket - OEM part # 35178-30010
    Refill plug gasket - OEM part # 90301-15004
    Transmission Pan Gasket - OEM part # 35168-60010
     
    Last edited: May 19, 2016
    Jimmyh likes this.
  3. May 18, 2016 at 9:32 PM
    #3
    Jimmyh

    Jimmyh Well-Known Member

    Joined:
    May 16, 2012
    Member:
    #78991
    Messages:
    10,014
    Gender:
    Male
    SC
    Vehicle:
    2012 Prerunner SR5
    Just like Lester said.

    Ditto.
     
  4. May 19, 2016 at 7:52 AM
    #4
    Mad Man Marty

    Mad Man Marty Well-Known Member

    Joined:
    Jan 4, 2013
    Member:
    #94418
    Messages:
    1,039
    Gender:
    Male
    First Name:
    Marty
    PA
    Vehicle:
    2007 Tacoma SR5 TRD Sport
    6speed, TRD intake, bed tie downs, weathertech rear,Tint
    Yep.
    Replace drain plug gaskets on everything,ever time.
     
  5. May 19, 2016 at 10:56 AM
    #5
    2015WhiteOR

    2015WhiteOR [OP] Well-Known Member

    Joined:
    Feb 2, 2015
    Member:
    #147773
    Messages:
    759
    Gender:
    Male
    USA
    Vehicle:
    2015 DCSB TRD Off Road

    Awesome advice sir. Now to find someone selling those gaskets in a 10 pack for cheap..
     
  6. May 19, 2016 at 11:29 AM
    #6
    Lester Lugnut

    Lester Lugnut Well-Known Member

    Joined:
    Mar 3, 2010
    Member:
    #32477
    Messages:
    2,561
    Gender:
    Male
    N of Mex-S of Canada-E of LA-W of NC
    Vehicle:
    '15 Tacoma PreRunner V6 SR5 Auto
    I searched ebay before I did this - looked for the 2 gaskets. None available in a 10 pack or any sort of multi-pack. All sellers were offering single gaskets for prices higher than the dealer(most cases). I went to dealer, but had to special order. None were in stock. That tells me they never do transmission fluid changes or simply reuse the existing gasket. That's not a real problem for the refill gasket up above where you pour ATF into. The 2 pan gaskets(drain/overfill) down below should be changed.

    Some good deals on ebay for Toyota WS ATF. Free delivery for some of them.
     
  7. May 24, 2016 at 11:04 PM
    #7
    2015WhiteOR

    2015WhiteOR [OP] Well-Known Member

    Joined:
    Feb 2, 2015
    Member:
    #147773
    Messages:
    759
    Gender:
    Male
    USA
    Vehicle:
    2015 DCSB TRD Off Road
    So a bit of an update on this topic. If you look around on the 4Runner forums, a lot of guys there have stripped the threads on their A750 trans oil pans.

    To reiterate, the factory service manual states the torque spec to be around 20 lb ft, but this would be a DRY torque spec.

    Since most of us are changing out the fluid, the fastener will probably be oiled so the torque spec needs to be reduced by 20%.

    So, torque to 16 lb foot to avoid any issues.
     
  8. Jul 14, 2018 at 10:30 AM
    #8
    morelia

    morelia Well-Known Member

    Joined:
    Mar 4, 2014
    Member:
    #124591
    Messages:
    100
    Gender:
    Male
    conroeeee
    k&n intake. hid kit sound system


    Taken from torque spec guide for 750e
    Drain plug 21 lb. Oil pan bolts 39. Refill bolt 29. Overflow 15.
     
  9. Jul 14, 2018 at 10:38 AM
    #9
    morelia

    morelia Well-Known Member

    Joined:
    Mar 4, 2014
    Member:
    #124591
    Messages:
    100
    Gender:
    Male
    conroeeee
    k&n intake. hid kit sound system


    Taken from torque spec guide for 750e
    Drain plug 21 lb. Oil pan bolts 39. Refill bolt 29. Overflow 15.
     
  10. Jan 19, 2020 at 9:33 AM
    #10
    Rougarou

    Rougarou New Member

    Joined:
    Jan 19, 2020
    Member:
    #316568
    Messages:
    2
    Gender:
    Male
    Vehicle:
    2007 Taco 4x4 TRD
    I think there may be a typo here, the oil pan bolts should be torqued to 39 INCH POUNDS
     
  11. Jan 19, 2020 at 9:36 AM
    #11
    Bishop84

    Bishop84 Well-Known Member

    Joined:
    Dec 17, 2015
    Member:
    #172494
    Messages:
    3,355
    Gender:
    Male
    I Don't torque pan plugs, I do it by hand, crush the new gasket, then a 1/4 more thats it, run and check for leaks.

    The 2nd gen pans are known for stripping drain plugs, it will just free spin, but this is often JUST the plug, as it is weaker than the pan threads.
     
  12. Jan 19, 2020 at 12:28 PM
    #12
    EdgemanVA

    EdgemanVA Well-Known Member

    Joined:
    Nov 18, 2013
    Member:
    #116820
    Messages:
    203
    Gender:
    Male
    Virginia Beach
    Vehicle:
    2008 X-Runner
    Several
    That's why I no longer let the dealer do my oil changes. Really think they use a impact gun to tighten the drain plug. It's not like that is a "stressed" bolt...it just keeps oil from draining out. Geeezzzze!
     
  13. Jan 19, 2020 at 12:37 PM
    #13
    spitdog

    spitdog Well-Known Member

    Joined:
    Sep 2, 2014
    Member:
    #137440
    Messages:
    2,241
    Gender:
    Male
    Vehicle:
    2015 Access Cab V6 4x4 SR5 Tow Pkg
    I always use a new crush washer and tighten until it crushes. Go slow with easy pressure and you can feel the washer crush.
     
  14. Jan 19, 2020 at 2:17 PM
    #14
    jkuniverse

    jkuniverse Well-Known Member

    Joined:
    Feb 20, 2019
    Member:
    #283862
    Messages:
    301
    Gender:
    Male
    First Name:
    Jason
    Arlington TX
    Vehicle:
    2013 Limited DCSB 4x4 Super White
    When I did the tranny drain n fill, the washer crushed at around 13 ft lbs and I tightened it to about 15 ft lbs. no leak
     
  15. Jan 19, 2020 at 4:42 PM
    #15
    Rougarou

    Rougarou New Member

    Joined:
    Jan 19, 2020
    Member:
    #316568
    Messages:
    2
    Gender:
    Male
    Vehicle:
    2007 Taco 4x4 TRD
    I was referring to the post above that said the torque for the "Oil pan bolts 39" which is the (20) 10mm bolts that connect the transmission oil pan to the transmission. It should be 39 inch pounds. Or to feel :D
     

Products Discussed in

To Top