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Diff service

Discussion in '2.5 Gen Tundras (2014-2021)' started by squid, Jun 16, 2020.

  1. Jun 16, 2020 at 6:49 PM
    #1
    squid

    squid [OP] New Member

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    I have read all the posts on doing the Diff service and it looks pretty straight forward. My question is, is this fairly easy to do? I do my own oil but I’m a bit nervous doing this for some reason. Thanks
     
  2. Jun 16, 2020 at 7:04 PM
    #2
    TILLY

    TILLY Gently Used Member

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    Don't be nervous, lots of vids on YouTube will guide you right through it if you need help. I think the most important part is using the right gear oil, and making sure you can remove the filler plugs before you attempt to drain the oil. Good luck.
     
  3. Jun 16, 2020 at 7:05 PM
    #3
    computeruser6

    computeruser6 Gott Mit Uns

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    Yes, it's as easy as you think it is. I use 85W-140 in the rear because I spend large amounts of time in hot environments. Unless you forget to put oil in it you'll be fine.
     
    Luckydog likes this.
  4. Jun 16, 2020 at 7:10 PM
    #4
    TundraMcGov.

    TundraMcGov. Your friend. Your foe. Not yo Ho.

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    Easy peasy. You'll want the truck level. Make sure you get the fill plug out BEFORE you pull the drain plug. Reusing the crush washers is fine. And get the ole summer pool nose plug---used gear oil is worse than fresh horse shit.
     
    15whtrd likes this.
  5. Jun 16, 2020 at 7:37 PM
    #5
    AZBoatHauler

    AZBoatHauler SSEM#140/ASCM#3/2ndGenNaysayer/BAF140

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    As stated above, this is way simpler than an oil change. I did change out the crush washers for peace of mind. They are like $1 at the dealer. The front is a little more difficult to access but still super simple. One of the from plugs takes a copper washer if I recal correctly. (Assuming you’re 4WD)
     
  6. Jun 17, 2020 at 8:20 AM
    #6
    squid

    squid [OP] New Member

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    Thanks for the info, I appreciate it
     
  7. Jun 17, 2020 at 8:22 AM
    #7
    Prostar 190

    Prostar 190 SSEM #9 I would rather be water skiing

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    Yes it's super easy. I also replace my crush washers.
     
  8. Jun 17, 2020 at 8:58 AM
    #8
    kevine0001

    kevine0001 New Member

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    You can order the crush washers off Amazon, way cheaper. just make sure you have correct part number. it's very easy, just get a decent fluid transfer pump to fill the diffs. and make sure you're using correct oil for the t-case (75w). ravenol (about $20) or OEM (about $80) per bottle. you'll need two for t-case. I think about 5-6 bottles of the diff fluid for both diffs.
     
    Tundra1078 and Ely010606 like this.
  9. Jun 17, 2020 at 9:47 AM
    #9
    Uhhhh....

    Uhhhh.... New Member

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    As stated, before you drain, make sure you can remove filler plugs.
    If you can change your oil, you can change diff fluid. It's a cinch.

    To help you out a bit:

    Rear diff drain/fill plug 36 ft. lbs. torque
    Front diff drain/fill plug 29 ft. lbs. torque
    Front differential - 75w-90 - 2.2qt (2.08L)
    Rear differential - 75w-90 - 3.8qt (3.59L)
    I used Ravenol J1C1109 SAE 75W-90 Gear Oil.

    And should you decide to do the transfer case fluid as well (same change interval as diffs & extremely easy, too):

    Transfer case 27 ft. lbs. torque
    75w - 1.6qt (1.51L)
    I used Ravenol J1C1003 SAE 75W Manual Transmission Fluid
     
    Dorks68, Tundra1078, equin and 6 others like this.
  10. Jun 17, 2020 at 10:01 AM
    #10
    TemujinNomad

    TemujinNomad New Member

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  11. Jun 18, 2020 at 3:52 AM
    #11
    Haggis777

    Haggis777 I.L.J.C.M.L.

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    EASY?!
    Like Sunday mornin'....
    (Those of you from the 70's will get that one)

    Seriously, this fluid change is a piece of cake as is the transfer case. I think the diff change is easier than doing the oil actually...
    No skid plate to remove. (Rear)
    Less mess.
    Knock it out, brother!
     
    equin and Ely010606 like this.
  12. Jun 18, 2020 at 4:49 AM
    #12
    TundraMcGov.

    TundraMcGov. Your friend. Your foe. Not yo Ho.

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    Growing and my hair and smoking sh!tty weed then.

    Early Lionel..............
     
  13. Jun 18, 2020 at 5:43 AM
    #13
    Stumpjumper

    Stumpjumper New Member

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    Get a Allen wrench with 3/8" or 1/2" socket fitting for the front. Make sure it is fully seated before trying to loosen.
     
  14. Jun 18, 2020 at 7:26 AM
    #14
    Rob's Inferno

    Rob's Inferno New Member

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    FIRST, MAKE SURE that you LOOSEN the FILLER PLUG BEFORE removing the drain plugs.And all of them are crazy tight.Other than that its a fairly easy job.Front is just tight on space especially if your doing it in your driveway on your back. Just did mine last weekend.
     
  15. Jun 18, 2020 at 7:46 AM
    #15
    Ely010606

    Ely010606 New Member

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    Tag
     
    Pinay likes this.
  16. Jun 18, 2020 at 7:48 AM
    #16
    ninjajay

    ninjajay Posting from the toilet

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    Did mine at 30k, washers still looked new so I won’t replace them until next time. Will probably replace my rear diff fill plug next time as well, it got a little bit stripped as it’s quite shallow.
     
    kevine0001 likes this.
  17. Jun 18, 2020 at 10:19 AM
    #17
    kevine0001

    kevine0001 New Member

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    forgot about this....this is really important!
     
  18. Jun 18, 2020 at 8:04 PM
    #18
    SuperWhite20

    SuperWhite20 New Member

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    Check your vents while servicing them too.
     
  19. Jun 18, 2020 at 8:17 PM
    #19
    BTBAKER

    BTBAKER DIFFERENT NAME. SAME JUNK.

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    I’ll change your diff for you next time if you take that picture down. :rofl:
     
    Haggis777[QUOTED] likes this.
  20. Jun 23, 2020 at 6:32 AM
    #20
    Porkchop Express

    Porkchop Express Its all in the reflexes

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    I just did mine over the weekend. Kinda disappointing / relieved at the same time.
    All the fluid I drained out was clear and looked new. Drain plugs were sludge-y with micro shavings , but the oil looked great.
    I dumped the Lucas 75W-90 in all three and drove around the hood , then on the lawn in 4wd.
    Did the oil change too.
    $200 day not including beer ...
     
  21. Jun 23, 2020 at 10:53 AM
    #21
    squid

    squid [OP] New Member

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    Has any one used this? it it any easier to fill?[​IMG]
     
  22. Jun 23, 2020 at 11:03 AM
    #22
    Bravohook

    Bravohook New Member

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    Works awesome for the rear diff.....front diff not so much..pain in the ass to get it in the right spot without spilling
     
    equin likes this.
  23. Jun 23, 2020 at 5:24 PM
    #23
    BTBAKER

    BTBAKER DIFFERENT NAME. SAME JUNK.

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    I pump mine in at all three spots.
     
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  24. Jun 23, 2020 at 6:15 PM
    #24
    buckrub71

    buckrub71 Like Father, Like Son--Semper Fi

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  25. Jun 23, 2020 at 8:13 PM
    #25
    Porkchop Express

    Porkchop Express Its all in the reflexes

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    Same. 75w90 synthetic in both diffs and the transfer case
     
  26. Jun 23, 2020 at 8:47 PM
    #26
    GNTundra

    GNTundra The Notorious Troll Sniper

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    Just serviced mine about two weeks ago. Simple to do. :thumbsup:
     
  27. Jun 24, 2020 at 3:59 PM
    #27
    Rob's Inferno

    Rob's Inferno New Member

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    Mobil Delvac 1 75w90 front and rear and Toyota 75W in T case.That 75W is like water compared to 75-90.Front was very clean ,rear was dark and t case looked like new.Its done for a long time now.
     
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  28. Jun 24, 2020 at 4:28 PM
    #28
    AZBoatHauler

    AZBoatHauler SSEM#140/ASCM#3/2ndGenNaysayer/BAF140

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    How many miles on it when you changed the fluids? I did front and rear diffs at 34k and had the same experience re fluid color. I didn't do the T case because 1) cost and 2)I'm still waiting for someone to say they changed it and it didn't look perfect.
     
    Doxiedad likes this.
  29. Jun 24, 2020 at 4:30 PM
    #29
    lewi3069

    lewi3069 New Member

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    I used these on my truck. I get things at cost if you ever need anything.
     
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  30. Jun 24, 2020 at 5:10 PM
    #30
    Rob's Inferno

    Rob's Inferno New Member

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