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How do I know if I have trac-loc or not ?

Discussion in 'Wrangler TJ (1996-2006)' started by hutchtoy, Aug 21, 2017.

  1. Aug 21, 2017 at 8:19 PM
    #1
    hutchtoy

    #1
    hutchtoy [OP] New Member

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    Just got a 04 TJ unlimited and am changing all the fluids so I know when it was done last and look at the diff gears to make sure they are ok. Added Mobil 1, 70 w - 140 but how do I know if I have Trac -Loc or not? The rear didn’t look like a possi set up but was beefier than the front. Tags on the rear dif show - 52114210AA T-L (traction lock?) and 80w90 60 oz + FM4 oz (quantity with additive ?). Front tag had 52099200 AE, 3 78 611312-4.
     
    hutchtoy, Aug 21, 2017
    #1
  2. Aug 21, 2017 at 8:32 PM
    #2
    chris4x4

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    chris4x4 With sufficient thrust, pigs fly just fine Moderator

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    The way I have done this, is jack up the axel, with both tires off the ground, and spin one by hand. If the other side spins the same way, you have a No-Slip, or Trac-Lok. If it spins opposite, then its an open diff.
     
    chris4x4, Aug 21, 2017
    #2
    JKBob 25 and aggrex like this.
  3. Aug 21, 2017 at 9:19 PM
    #3
    aggrex

    #3
    aggrex Well-Known Member

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    Welcome! In addition to Chris comments, with the axle cover off the assemblies look different

    trac lok vs open.jpg
     
    Last edited: Aug 21, 2017
    aggrex, Aug 21, 2017
    #3
    JKBob 25 likes this.
  4. Aug 22, 2017 at 6:27 PM
    #4
    JKBob 25

    #4
    JKBob 25 Well-Known Member

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    Welcome to the forum hutchtoy.
     
    JKBob 25, Aug 22, 2017
    #4
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