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DIY: Rear Differential Breather Mod

Discussion in '2nd Gen Tundras (2007-2013)' started by csuviper, May 25, 2016.

  1. Oct 23, 2016 at 5:07 PM
    #61
    Dustydirt19

    Dustydirt19 Hoghead

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    Sucks air in to cool
     
  2. Oct 23, 2016 at 5:45 PM
    #62
    15whtrd

    15whtrd Mr. Blonde

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    OK all done. I didn't put U at the top. Decided against it once I saw how the breather worked. Very simple but it has a cap the end that I feel if I turn it upside down it may hold water and possibly suck it back inside. But I may install a filter later on. I routed it along the inside of the frame rail. I did it the hard way and did not drop the spare.

    IMG_2108.jpg
     
  3. Oct 23, 2016 at 5:56 PM
    #63
    15whtrd

    15whtrd Mr. Blonde

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    Yeah I read all of them.
    I totally get the concept. And it all does make sense.

    I'm just saying that when I inspected the breather valve itself it is really only a one-way valve. It would just allow air out but not back in. I'm just saying try it blow through the thing and then try to blow in reverse. Or suck however you like LOL. Because when I unscrewed it from my diff it took a big gulp of air. I had driven the truck early this morning and came back and parked it. A couple hours later I started the mod after the truck and rear end had cooled down. Went and unscrewed the valve and it sucked air. I'm a plumber by trade and I do get how things expanding contract with heat and cold. I'm just wondering if it really would suck water back in because the valve only works one direction. But it still is a good peace of mind having it up in the tail light now!
     
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  4. Oct 23, 2016 at 5:58 PM
    #64
    15whtrd

    15whtrd Mr. Blonde

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    Ahh I see what I said on my original post. I said exhaled I meant inhaled.
     
  5. Oct 23, 2016 at 6:34 PM
    #65
    Dustydirt19

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    Now we're tracking!! Lol
     
  6. Oct 23, 2016 at 6:36 PM
    #66
    Dustydirt19

    Dustydirt19 Hoghead

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    Where did everyone get the union and new breather from?
     
  7. Oct 23, 2016 at 6:39 PM
    #67
    joonbug

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    Ordered union from dealer, $12. And re use the breather
     
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  8. Nov 30, 2016 at 7:59 AM
    #68
    TTU19

    TTU19 Wreck 'Em

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    I have a dumb question. Is this mostly only for 4x4, or any non-4x4 as well?
     
  9. Nov 30, 2016 at 8:00 AM
    #69
    joonbug

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    All
     
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  10. Nov 30, 2016 at 8:04 AM
    #70
    TTU19

    TTU19 Wreck 'Em

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    Cool, guess that is something I need to add to the list of things to do.
     
  11. Nov 30, 2016 at 8:20 AM
    #71
    TTU19

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    Tail lights are no problem. I replaced the reverse lights before so I know what to do on those.
     
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  12. Nov 30, 2016 at 8:24 AM
    #72
    TTU19

    TTU19 Wreck 'Em

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    Cool. So you just need that Toyota part, hose, and some zip ties? No drilling or anything?
     
  13. Jan 8, 2017 at 9:38 PM
    #73
    csuviper

    csuviper [OP] Moderator Staff Member

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    Some Mods :) See build thread for details
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  14. Jan 8, 2017 at 9:48 PM
    #74
    zcarpenter92

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  15. Jan 9, 2017 at 12:36 AM
    #75
    joonbug

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    I don't think the ARB comes with the union so you will still need to get it. This only replaces the breather and the hose. But you can re-use the breather that you take off the diff and just buy hosing. Be sure to buy atleast 10 ft.
     
  16. Jan 9, 2017 at 5:02 AM
    #76
    Cfincke

    Cfincke Mall Crawler but capable

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    What @joonbug said, get at least 10 feet of hose. I only bought 8 feet and wish i had another foot or two for clean routing of the hose.
     
  17. Jan 9, 2017 at 6:26 AM
    #77
    zcarpenter92

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    Ah, good thing I looked at the "Products Discussed in this Thread" deal and found it there. How many additional feet did you add to accomadate your lift @joonbug?
     
    Last edited: Jan 9, 2017
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  18. Jan 21, 2017 at 4:15 PM
    #78
    tat2ude39

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    Is there a breather in the front axle on a 4x4 too, that may need to be addressed also?
     
  19. Jan 21, 2017 at 4:32 PM
    #79
    joonbug

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    Oh sorry Zach, didn't see this. I think 10 ft should be enough. They were at the end of the roll so they just gave me the rest which was like 11 feet. And I had a little leftover. You just need a little slack, for when the suspension flexes. I gave it more slack than I needed just to be safe.
     
  20. Jan 21, 2017 at 4:35 PM
    #80
    zcarpenter92

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    Yeah I'd hate to break a hose once my lift goes on. I may need to order the fitting online, since my dealer can't find the right breather even with the part number I have em.
     
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  21. Jan 21, 2017 at 5:08 PM
    #81
    tat2ude39

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    Thanks Ron :thumbsup:
     
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  22. Feb 24, 2017 at 3:30 PM
    #82
    GodlessPro

    GodlessPro Bougie BASTRD

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    I did this last weekend. The pictures and part numbers that @dcsleeper408 posted make this very easy.
     
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  23. Apr 11, 2017 at 9:34 PM
    #83
    LibertySand

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    One Clicked that part on AMAZON. This is a need to fix/upgrade for sure!

    Great write up. Need to get this done before Sedona Event.
     
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  24. Aug 18, 2017 at 5:58 PM
    #84
    Les7311

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    When will these mods stop!!!!!
     
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  25. Feb 21, 2018 at 9:38 PM
    #85
    Mountun Goat

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    Sorry if I missed it. Does anyone know the thread size of the diff breather? I have a few of these kicking around my shop and maysel use em if I got em. I assume it’s a 5/16” npt?
     
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  26. Feb 21, 2018 at 9:46 PM
    #86
    dcsleeper408

    dcsleeper408 BASTRDS

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    I forgot what the thread was called. But it wasn’t npt. You will end up cross threading/stripping the housing. You can pull out your breather to compare thread to double check.
     
  27. Feb 22, 2018 at 5:04 AM
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    Cuzican

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    The thread is either 10x1.5 or 10x1.25, I can't remember.
     
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  28. Feb 22, 2018 at 11:20 AM
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    Mountun Goat

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  29. Feb 22, 2018 at 1:37 PM
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    Cuzican

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    Just found something that says 10x1.0, can't say for sure if it's accurate though.
     
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  30. Feb 22, 2018 at 1:41 PM
    #90
    Sunnier

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    I have one I haven't yet installed. If you tell me what to measure (show me a pic of you measuring one you have, so I know I'm measuring the right way), I'm happy to do.

    FYI: when you enter that part number into an internet search it comes up for a sale from about a million sources. Definitely not something you need to get from a dealer. This is a perfect example of a free 2-day deliver Amazon Prime purchase. If you decide to just get another.
     
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