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hot rear axle

Discussion in '1st Gen. Tacomas (1995-2004)' started by juice, Jun 2, 2011.

  1. Jun 2, 2011 at 9:28 PM
    #1
    juice

    juice [OP] Member

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    I just made it home from about a 15 mile drive and crawled under my truck to find the rear diff to be very hot. I know its gonna get hot but this seem excessive,so i compared it to the wifes suv that was driven the same distance and its a considerable difference. Any ideas??? Is it the mud tires thats putting the extra resistance one the drivetrain creating more heat? the suv is running streets. thanks for any thoughts
     
  2. Jun 2, 2011 at 9:33 PM
    #2
    krimson

    krimson Nothin

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    Whens the last time you changed your differential fluid?
     
  3. Jun 2, 2011 at 9:59 PM
    #3
    juice

    juice [OP] Member

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    I checked the fluids after i bought the truck and they looked fresh and clean.idk I may just change it anyway. what additive do i need to add to the diff oil for the e-locker and how much? thanks guys!!!
     
  4. Jun 2, 2011 at 10:01 PM
    #4
    kmok

    kmok Plastidipped ma Hootus!

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    No additives needed for the elocker. I'm not sure how much off the top of my head, it should be in the owner's manual though if you still have it.
     
  5. Jun 2, 2011 at 10:02 PM
    #5
    David K

    David K Well-Known Member

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    Differential Breather Mod Light Bar: 2 Hella 4000 HID, 1 Cibie Halogen. Bilstein 5100s Ride Rite Air Bags
    Off Roader? Do the differential breather mod! A hot pumpkin dropped in cool water will cause contamination to pass by the axle seals!
     
  6. Jun 2, 2011 at 10:12 PM
    #6
    juice

    juice [OP] Member

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    the toyota servive guy said it needed a lsd additive to the gear oil. not sure if he really knew what he was talking about. Got to do the breather mod.
     
  7. Jun 2, 2011 at 10:14 PM
    #7
    steve o 77

    steve o 77 braaap

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    it does not need the additive. You don't have a LSD.
     
  8. Jun 2, 2011 at 10:16 PM
    #8
    kmok

    kmok Plastidipped ma Hootus!

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    Yeah that guy doesn't know what he's talking about. You don't have a lsd so there's no need for the additive even with the elocker. I've changed the differential fluid in my 03 TRD and all I added was the owner's manual recommended gear oil. Differential breather mod is very easy too.
     
  9. Jun 2, 2011 at 10:31 PM
    #9
    juice

    juice [OP] Member

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    cool, thanks for the info fellas !!!! :D
     
  10. Jun 3, 2011 at 8:02 AM
    #10
    David K

    David K Well-Known Member

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    Differential Breather Mod Light Bar: 2 Hella 4000 HID, 1 Cibie Halogen. Bilstein 5100s Ride Rite Air Bags

    No, I mean the axle seals...

    Water can't get in through the stock breather as it is a one way check valve that will only let hot gasses out of the differential.

    What the breather mod does is put the breather used on our front differential (which is mounted remote and high up) on the end of a hose off the rear differential, high up.

    This 'front breather' that we also use for the rear mod is a 2 way breather... lets gasses/ air move in or out of the differential. It is now a breather and a vacuum breaker... so, when you drive into deep water (18"+), instead of the the cold water being drawn towards the hot differential (through the axle seals), 'cold' air will break the vacuum created by the temperature difference. This is how it works on the front differential.

    This was all explained in the various rear differential breather mod posts... but maybe not as clearly as I just did here. :)
     
  11. Jun 3, 2011 at 8:16 AM
    #11
    mjohn617

    mjohn617 Well-Known Member

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    Ummmm......then why would you bother re-positioning the breather in the first place?

    EDIT:

    Ok so your using the two way in the rear...got it.
     
  12. Jun 3, 2011 at 8:19 AM
    #12
    David K

    David K Well-Known Member

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    Differential Breather Mod Light Bar: 2 Hella 4000 HID, 1 Cibie Halogen. Bilstein 5100s Ride Rite Air Bags
    To stop the rear differential from being contaminated with muddy water! Happened to my truck when it was only 5 months old going to Mision Santa Maria... Had the differential serviced when I got back because it was dirty. See the MSM photos... http://vivabaja.com/msm2010/
     
  13. Jun 3, 2011 at 9:54 AM
    #13
    skytower

    skytower Well-Known Member

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    80w-90 gl4 or gl5. Amsoil Severe Gear works well!
     
  14. Jun 3, 2011 at 4:39 PM
    #14
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Mine seems to stay around 170* or so in the summer....As long as its not over 200* everything should be fine.
     
  15. Jun 3, 2011 at 4:51 PM
    #15
    JLee

    JLee The Man! Vendor

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    I lost track thousands of dollars ago.

    Yep x2
     
  16. Jun 3, 2011 at 6:02 PM
    #16
    David K

    David K Well-Known Member

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    Thanks Jerry!
     
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