1. Welcome to Tundras.com!

    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 Tundra discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other Tundra owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Differential Drain and Fill plugs

Discussion in 'General Tundra Discussion' started by omgboost, May 6, 2019.

  1. May 6, 2019 at 9:31 AM
    #1
    omgboost

    omgboost [OP] The Accountant

    Joined:
    Apr 19, 2019
    Member:
    #29334
    Messages:
    633
    Gender:
    Male
    East Coast
    Vehicle:
    2012 Sequoia Platinum
    I have a 2nd gen Sequoia. I went out to try to drain and refill the fluids on the differentials and transfer case.

    The transfer case was easy-peasy and did not give me any issues.

    When I went to do the front diff, I was able to get the fill plug out but ended up stripping the drain plug using the 10mm. I was not able to get the rear fill plug out and think that it may be on the brink of being completely stripped as well. Has anyone replaced their diff plugs with these o2 sensor bolts? https://www.ebay.com/itm/M18x1-5-O2...c-Plating-Weld-Bung-Plug-PK-OF-2/123617366853
    Would the transfer case bolts work on the diff? I see ebay has magnetic drain bolt for the rear only but I'm considering changing to a 6 point socket bolt instead of the stock 10mm allen for when I pay someone to get the stripped bolt off.
     
  2. May 6, 2019 at 10:17 AM
    #2
    landphil

    landphil Filthy. Stinkin’. Rich. Two outa three ain’t bad.

    Joined:
    Oct 9, 2016
    Member:
    #4814
    Messages:
    3,256
    Gender:
    Male
    First Name:
    Phil
    BC, Canada
    Vehicle:
    ‘08 TRD doublecab
    It sounds like it’s too late for the front diff drain plug, but there is a handy trick for removing flanged plugs like these. A sharp smack or two face-on the head of the plug with a small-ish hammer will make them much easier to loosen. It’s just enough to compress the seal ring a tiny bit more, and break the bond.

    I’m not much help on replacing plugs with a different style, but I like the idea if the thread size and pitch matches up.
     
  3. May 6, 2019 at 11:59 AM
    #3
    myt1

    myt1 New Member

    Joined:
    Mar 25, 2018
    Member:
    #13873
    Messages:
    236
    Gender:
    Male
    First Name:
    Richard
    Scottsdale, AZ
    Vehicle:
    2010 Tundra DC TRD SR5 Desert Sand Mica
    OME Lift, Air Lift
    I had the exact same problem that you had.

    In fact, I heard it is very common to have difficulty draining the front differential.

    I had no issues draining the rear differential and the transfer case.

    I ended up having to take my truck to the shop and have them use power tools to remove the front differential drain plug, after I stripped it.

    As long as you don't over tighten the new drain bolt, is there an issue just using the a new OEM bolt?

    I thought the issue was with over-tightening, not an issue with the bolt.
     
    omgboost [OP] likes this.
  4. May 6, 2019 at 12:26 PM
    #4
    omgboost

    omgboost [OP] The Accountant

    Joined:
    Apr 19, 2019
    Member:
    #29334
    Messages:
    633
    Gender:
    Male
    East Coast
    Vehicle:
    2012 Sequoia Platinum
    I live where we get quite a bit of snow and road salt which causes the bolts to get rusty. The only problem I have with a new OEM bolt is fear of rusting and stripping it again in the future but I'm sure if I just follow the torque specs of like 29 ft lbs, it shouldn't happen again. I still have to buy new bolts so just wondering if it is worth "upgrading" the bolts. I do feel that the OEM ones is like a soft aluminum type and I could feel the allen part stripping when I tried to turn the bolt loose.
     
    myt1 likes this.
  5. May 6, 2019 at 12:30 PM
    #5
    15whtrd

    15whtrd Mr. Blonde

    Joined:
    Sep 20, 2015
    Member:
    #1829
    Messages:
    9,144
    Gender:
    Male
    First Name:
    Sean
    SoCal
    Vehicle:
    White 2015 Tundra DC SR5 TRD 4x4 5.7L, White 2003 Sequoia 2WD
    TRD Pro suspension, +2 Coachbuilder shackles, 2015 TRD Pro headlights, 20% ceramic tinted windows, clear ceramic tinted front windshield, aFe drop in pro s dry air filter, TRD airflow accelerator, TRD oil fill cap, TRD 18 psi radiator cap, BDX Bullydog tuner, Weathertech floor mats front and rear, rear seat fold down mod, DNA hard trifold tonneau cover, Linex with uv protection, TRD rear swaybar, TRD center caps, TRD Pro grille insert with color matching surround and bulge, TRD PRO headlights, aluminum oil filter canister, Real truck tailgate seal, Pop-n-lock tailgate lock actuator, rear diff breather relocate, RCI front skid plate. 275/70 R18 BFG KO2s
    I think the initial or first time they’ve been removed is probably the worst. The front differential is all aluminum. The plugs were installed when the units were completely dry so I’m sure there was zero lube on the threads. I think as long as you torque it properly and along with residual gear lube on the threads you should be fine.
     
    myt1 and omgboost [OP] like this.
  6. May 10, 2019 at 5:34 PM
    #6
    omgboost

    omgboost [OP] The Accountant

    Joined:
    Apr 19, 2019
    Member:
    #29334
    Messages:
    633
    Gender:
    Male
    East Coast
    Vehicle:
    2012 Sequoia Platinum
    So I was able to remove the rear fill plug by hammering the hex bolt into the fitting. The drain plug was a bit easier. It turns out that the drain plug is bigger than the fill plug so the link to the M18x1.5 in the original post will not fit the drain holes.

    For the front, I was able to suction out 1.5L of fluid through the fill plug (capacity is 2.12L so about 2/3 sucked out) and filled it up. For next time, I'll probably try vise grip or pipe wrench and see if I can get the stripped drain plug out.
     
    landphil likes this.
  7. May 10, 2019 at 6:55 PM
    #7
    landphil

    landphil Filthy. Stinkin’. Rich. Two outa three ain’t bad.

    Joined:
    Oct 9, 2016
    Member:
    #4814
    Messages:
    3,256
    Gender:
    Male
    First Name:
    Phil
    BC, Canada
    Vehicle:
    ‘08 TRD doublecab
    You can also cut a little bit of a notch into edge with a cold chisel, then change the angle so the hammer and chisel turn the plug counterclockwise.
     
    15whtrd and omgboost [OP] like this.
  8. May 10, 2019 at 7:48 PM
    #8
    Les7311

    Les7311 Look up, what do you see

    Joined:
    Dec 30, 2016
    Member:
    #5738
    Messages:
    1,216
    Gender:
    Male
    Vehicle:
    2008 Blue Tundra TRD 4x4
    The rear was easy-peasy!

    The front drain, I cussed like a
    “Drunk-$1- Pirate......” trying to break it loose...

    Shop guy about 300pound literally swing himself with a breaker bar for about 3 minutes before he broke it loose......

    Dammitttt whomever you are (then)....
     
    YardBird likes this.
  9. Oct 23, 2019 at 1:09 PM
    #9
    Zebruaj

    Zebruaj New Member

    Joined:
    Oct 8, 2019
    Member:
    #37139
    Messages:
    546
    Gender:
    Male
    MN
    Vehicle:
    08 CM SR5
    Just fought the front diff drain plug this morning. It ain't budging and rounded off. Adapted the 3/8" 10 mm hex to the impact gun and wouldn't move. Breaker bar + jack handle ended up rounding out the drain bolt.

    Anyone know if the 24mm plug for the rear diff fits the front? Would rather use a socket than a hex key moving forward.
     
  10. Oct 23, 2019 at 6:50 PM
    #10
    cmb46

    cmb46 New Member

    Joined:
    Jul 24, 2019
    Member:
    #33623
    Messages:
    67
    Gender:
    Male
    Vehicle:
    2008 Tundra
    I was able to do the rear and the transfer case without any problems. I could not get the front fill bolt off so I quit.
     
  11. Oct 23, 2019 at 10:11 PM
    #11
    YardBird

    YardBird Native San Diegan

    Joined:
    Jan 15, 2019
    Member:
    #24572
    Messages:
    11,175
    Gender:
    Male
    First Name:
    Jonesy
    San Diego
    Vehicle:
    2005 RCLB
    American Thunder Cat Back ~ Retrax Pro ~ Toyota Bed Mat ~ OEM Split Spoke Wheels
    [​IMG]
    For cheap insurance maybe a splash of anti seize lubricant may be in order.
     
  12. Oct 25, 2019 at 6:07 AM
    #12
    Zebruaj

    Zebruaj New Member

    Joined:
    Oct 8, 2019
    Member:
    #37139
    Messages:
    546
    Gender:
    Male
    MN
    Vehicle:
    08 CM SR5
    Or don't let the dealer service ape get to your fill/drain bolts.
     
  13. Oct 28, 2019 at 9:54 AM
    #13
    mundra

    mundra New Member

    Joined:
    Aug 7, 2019
    Member:
    #34277
    Messages:
    166
    Gender:
    Male
    Fort Myers Florida
    Vehicle:
    2019 platinum 4x4
    315/70/17 Ridge Grapplers on Rock Warrior Wheels, Tinted windows,remote start,tech12volts audio upgrade w/2-10" subs, console charger, more to come soon.
    Off topic a little bit, but I’m glad our plugs are metal and our pans are metal. Fords run plastic pan and plugs.
     
  14. Oct 28, 2019 at 10:23 AM
    #14
    Stumpjumper

    Stumpjumper New Member

    Joined:
    Sep 15, 2016
    Member:
    #4546
    Messages:
    2,656
    Gender:
    Male
    Fate, Tx
    Vehicle:
    2017 Tundra TSS 4x4
    yep, I believe the subject is differentials and transfer cases.
     

Products Discussed in

To Top