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Front dif

Discussion in '2.5 Gen Tundras (2014-2021)' started by Yota18, May 19, 2018.

  1. May 19, 2018 at 3:49 AM
    #1
    Yota18

    Yota18 [OP] Inferno Club

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    maybe a dumb question but do our front diffs spin even when 4x isn’t engaged? Asking because I’m planning on regearing and was wondering about break in. If I’m only wheeling around in 2wheel are the front diffs getting broken in too or would that require some 4x action?
     
  2. May 19, 2018 at 7:42 AM
    #2
    Levidale08

    Levidale08 New Member

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    Yes they do. It doesn’t require any break in.
     
  3. May 19, 2018 at 9:22 AM
    #3
    jberry813

    jberry813 The Mad Scientist Staff Member

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    Both CVs will spin but the passenger side ADD tube will be unlocked and the transfer case not engaged. The drivers side moving will carry some inertia that the R&P will slightly spin. However I would encourage you to get at least 100 dirt miles in 4x4 in.

    And yes, any new R&P will require a break in process if you want the gears to last and not start humming.
     
  4. Jun 1, 2018 at 6:11 AM
    #4
    Yota18

    Yota18 [OP] Inferno Club

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    I just saw this I was about to bump it, never got an alert or missed it for this thread. So the front diff still spin but slow and not under a load? Thanks for the info appreciate it!
     
    landphil likes this.
  5. Jul 4, 2018 at 1:53 PM
    #5
    jberry813

    jberry813 The Mad Scientist Staff Member

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    Correct. Which really won't break in the gears. The pinion needs to be loaded for it to start wearing the gears in.
     
  6. Jul 4, 2018 at 3:33 PM
    #6
    rds95991

    rds95991 New Member

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    I miss the old manual hubs.

    Granted it could be a pain at times engaging and disengaging the hubs on a spur of the moment and you had to lock them in every month for a few miles to keep them lubed.

    But you could put it in low range without engaging the front hubs for serious pull.

    But keeping them engaged all the time just seems wrong.
     
    texasrho83 likes this.
  7. Jul 4, 2018 at 3:41 PM
    #7
    HighDesertSurfer

    HighDesertSurfer Surf The Dirt

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    In other words " Hit the dirt!" :)
    :mudding:
     
  8. Jul 4, 2018 at 3:54 PM
    #8
    Bergmen

    Bergmen New Member

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    It's too bad that transfer cases don't have a "front wheel drive only" selection so you could work the front drive parts independently. For those that rarely go off-road and use their 4WD, this would be a convenient option.

    Dan
     
  9. Jul 4, 2018 at 4:25 PM
    #9
    texasrho83

    texasrho83 Teacher in a Tundra

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    I've done a little..
    I did this in a Chevy I had that threw the rear driveshaft. Hobbled home on the front driveshaft and made it just fine
     

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