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Changing differential fluid - A step by step "HOW TO"

Discussion in 'Technical Chat' started by brianr, Jan 21, 2009.

  1. Jun 27, 2013 at 6:56 AM
    #1381
    byrd

    byrd Unknown

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    I didn't have any problem breaking loose any of my drain/fill plugs on my diffs, transfer case nor tranny from the factory fill. I also didn't use a 24MM socket as it felt a little loose on the nut. I used a 6 point 15/16 socket which fit on tight. As for the 10MM hex I took a hammer and tapped it in and then slipped the racket on. No issues.
    I suppose it wouldn't hurt to use anti-seize on them.
     
  2. Jun 27, 2013 at 8:22 AM
    #1382
    DirtEater

    DirtEater Well-Known Member

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    Good info on the 15/16 socket. I did the math and you're right, it is slightly smaller than a 24mm. I haven't done mine yet but I did buy a 24mm for it, and I'm betting that I already have a 15/16. Thanks.
     
  3. Jun 27, 2013 at 8:28 AM
    #1383
    DirtEater

    DirtEater Well-Known Member

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    What is the 10mm hex for? Not sure if I've forgot something or simply overlooked.
     
  4. Jun 27, 2013 at 1:41 PM
    #1384
    byrd

    byrd Unknown

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    10MM hex fits Front Differential fill & drain plugs.

    24MM or 15/16 6 point socket will fit Transfer Case, Manual Trans and Rear Differential fill & drain plugs, a 12 point socket from what I've read can cause the bolt head to strip and/or leave marks. My 24MM socket was a 12 point which could be why it felt loose, my 15/16 was a 6 point.
     
  5. Jun 27, 2013 at 2:51 PM
    #1385
    DirtEater

    DirtEater Well-Known Member

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    Thanks! The 24 mm I got from Northern Tools is an el cheapo $5 socket, but it's a 6 point socket. I checked the fit, and it seems snug...
     
  6. Jun 29, 2013 at 10:06 PM
    #1386
    BRUIN8124

    BRUIN8124 Well-Known Member

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    I have never done this and it seems pretty simple.

    I am not exactly the most mechanic savvy person but I am learning a lot from this site. I do my own oil changes, thats about as much as I get into it. ...for now anyways

    My 09 DCSB 4X4 (no locker, no TRD) has roughly 65K on it and I dont know when this was done last. I imagine there is some nasty stuff in there.

    Any advice for a first timer. I guess I am concerned about seals, leaks etc. I do have the LSD and I am a bit confused regarding whether an additive is needed or not. Right now everything is fine and I dont want to mess anything up.

    Thank you all for the info and wish me luck!

    AT Fluid change and Front transfer case fluid change maybe next if this goes well.
     
    Last edited: Jun 29, 2013
  7. Jun 30, 2013 at 1:22 AM
    #1387
    Janster

    Janster Old & Forgetful

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    You have an 09 which should have the AUTO LSD -which is brake actuated. You do not need friction modifier.

    But to be safe, walk around to the rear of your truck and take a look at your rear diff. If there's a red/white sticker that says "Only LSD Oil", then you'll need friction modifier. I'd post a photo of the sticker but I can't do it with the phone.
     
  8. Jun 30, 2013 at 8:40 AM
    #1388
    ImpulseRed008

    ImpulseRed008 Gone But Not Forgotten

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    You only need the additive if you have this sticker ^^
     
  9. Jul 11, 2013 at 10:17 AM
    #1389
    Jayhawker

    Jayhawker New Member

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    At 60k I changed the oil in the rear on my 06 Taco. 80W-90 with a LSD additive.

    I'm 18K down the road and I noticed a chatter. So here's the question.
    More additive or drain and start over?
     
    Last edited: Jul 11, 2013
  10. Jul 11, 2013 at 11:26 AM
    #1390
    Gene563

    Gene563 Well-Known Member

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    In my situation, I overfilled and syphoned some out. I didn't really notice chatter, but did experience the inside wheel spinning where it normally wouldn't.
    I added a little more additive. Also, someone here mentioned "figure 8s"; I went to an open parking lot and did a couple slow, tight, figure 8s, and gave it some more time. It seems fine now. It may just take a while to mix all the fluids properly.
     
  11. Jul 11, 2013 at 3:28 PM
    #1391
    ImpulseRed008

    ImpulseRed008 Gone But Not Forgotten

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    Maybe your fluid is low?
     
  12. Jul 15, 2013 at 1:09 PM
    #1392
    Gitmo

    Gitmo Well-Known Member

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    Couple questions before I change the diff oil front & rear as well as the t case oil..

    What should the fill and drain plug be torqued at for the front & rear? This thread says 36lb-ft for both while another thread says the front diff fill plug should be torqued at 29lb-ft and the drain plug at 48lb-ft. Doesn't say anything about the rear..
    http://www.tacomaworld.com/forum/2n...ront-diff-transfer-case-oil-change-howto.html


    So what should I torque the fill/drain plugs for the front & rear diff?
     
  13. Jul 15, 2013 at 1:33 PM
    #1393
    byrd

    byrd Unknown

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    Manual states this:
    Front Differential: Fill Plug 29 ft-lbs Drain Plug 48 ft-lbs
    Rear Differential: Fill/Drain plugs 36 ft-lbs
    Transfer Case: Fill/Drain plugs 27 ft-lbs
    Manual Transmission: Fill/Drain plugs 27 ft-lbs
    Automatic Transmission: Filter bolts 84 in-lbs....Fluid pan bolts 65 in-lbs....Drain plug 15 ft-lbs.......Overflow plug 15 ft-lbs......Refill plug 29 ft-lbs

    Jeez, glad I don't have an automatic :goingcrazy:
     
  14. Jul 15, 2013 at 1:53 PM
    #1394
    Gitmo

    Gitmo Well-Known Member

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    I have an auto :(. Thanks for the info, though!
     
  15. Jul 19, 2013 at 6:12 AM
    #1395
    Sje1124

    Sje1124 Well-Known Member

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    Need to do this soon
     
  16. Jul 19, 2013 at 6:15 AM
    #1396
    Sandman614

    Sandman614 LRGRNR

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  17. Jul 19, 2013 at 6:16 AM
    #1397
    Sje1124

    Sje1124 Well-Known Member

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  18. Jul 19, 2013 at 3:52 PM
    #1398
    kingston73

    kingston73 Well-Known Member

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    Just did mine today and have 1 question, I used 3 bottles of mobile 1 75/90 and I know the manual says it takes 2.8 qts and the generally accepted way to fill a diff is put oil in until it starts to run out BUT I put all 3 bottles in my rear diff and it still wasn't full enough for oil to start running out. I thought my drive was level but is it possible it was just tilted and not level? Basically, should I worry about adding more oil or just be satisfied that there's a bit less than 3 qts in?
     
  19. Jul 24, 2013 at 6:44 PM
    #1399
    Scorpo900

    Scorpo900 Well-Known Member

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    Weld a piece of rebar for leverage, get it loose, then cut the rebar. Will be pita, but can't think of any other way...
     
  20. Jul 24, 2013 at 6:46 PM
    #1400
    Scorpo900

    Scorpo900 Well-Known Member

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    I had the same issue, took a lot in like 3.7 QTS, to the bottom of the filler plug.. Weird. I drive slow anyways, but will be keeping an eye on it for any weird behavior.
     
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