How To: Change a Front CV Axle

Discussion in 'How To' started by twack, Apr 16, 2010.

  1. TwoBobsKJ

    TwoBobsKJ Full Access Member

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    Unless there is a leak from the passenger axle seal I wouldn't bother replacing the seal. It can be a pain to swap out from what I've seen here on the forums.

    The intermediate shaft is held in the diff by a snap ring just like the one on the CV end of the shaft. If your CV comes off the shaft when you go to take the CV axle off then you'll need to grab the intermediate shaft with a pair of vice grips and give it a good hard tug and it'll pop out. If the CV axle and intermediate shaft come out together (which is common, but as well as you take care of your KJ it's unlikely you have rust around there ;) ) then it's actually a very simple swap out. You'll pop the intermediate shaft into the diff, pop the CV axle onto the intermediate shaft then reassemble the hub, etc.

    Bob
     
    Last edited: Jul 2, 2015
  2. CactusJacked

    CactusJacked Full Access Member

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    I have a feeling the hub is going to slide right off the intermediate shaft without a fight. The end on mine was so worn, the snap ring wasn't doing any holding on the shaft, and was stuck in the groove of the hub. Didn't matter, as I was replacing the shaft and both axles anyway. I didn't bother opening another can of worms with messing with the seal, as it wasn't leaking before, nor is it now. To get the shaft out of the housing, I attached a vice grips on the end and pried between the grips and housing with my gorilla bar.
     
  3. HoosierJeeper

    HoosierJeeper Gold Supporter/Admin Staff Member Administrator

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    Thanks for the guide!!! Is there much of a risk damaging that seal when doing this? I'm inclined to leave it if you're saying it's hard, that means damn near impossible for me lol.
     
  4. CactusJacked

    CactusJacked Full Access Member

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    Just slide the old one straight out gently, and the new one in the same. Oil up the seal surface of the new shaft so you don't rub the seal the wrong way.
     
  5. CzarKJ

    CzarKJ Full Access Member

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    Passenger seal and bearing nearly destroyed my love of my Kj... just putting it out there. It's a true PITA.
     
  6. HoosierJeeper

    HoosierJeeper Gold Supporter/Admin Staff Member Administrator

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    Doing the driver's side right now...passenger side next. Do you pull the CV out from the hub end first or diff end first?
     
  7. CzarKJ

    CzarKJ Full Access Member

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    If I understand correctly... I removed the hub off my cv then got that out of the way. Then was able to slide the cv out.
     
  8. HoosierJeeper

    HoosierJeeper Gold Supporter/Admin Staff Member Administrator

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    I have both sides (diff and hub) free. I can't seem to pull any end out though. So I pull it from the hub side first to get it out of the hub then the diff side?
     
  9. CzarKJ

    CzarKJ Full Access Member

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    Once you take the nut off the cv end the hub (should) slides right off then you can deal with taking the cv out
     
  10. HoosierJeeper

    HoosierJeeper Gold Supporter/Admin Staff Member Administrator

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    Mine is completely loose there but I can't maneuver it out of the hub. I have the sway bar, UCA, tie rod and clevis disconnected. Am I doing something really wrong? It sounds pretty simple...
     
  11. TwoBobsKJ

    TwoBobsKJ Full Access Member

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    You'll need to take the spindle/hub off to get the CV out. You may be able to get the CV out if you just take the lower ball joint out of the upper control arm - but it kind of depends on how many hands you have working on it. When I do it myself I take the upper and lower ball joints out of their respective arms.

    Bob
     
  12. HoosierJeeper

    HoosierJeeper Gold Supporter/Admin Staff Member Administrator

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    How hard is it to disconnect the LBJ? So the whole knuckle has to come off then...
     
    Last edited: Jul 8, 2015
  13. TwoBobsKJ

    TwoBobsKJ Full Access Member

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    Similar to the upper - take off the nut then give the LCA a good whack with the hammer. I prefer to take off the lower first because the upper will hold the knuckle in place. Then take off the upper.

    Bob
     
  14. HoosierJeeper

    HoosierJeeper Gold Supporter/Admin Staff Member Administrator

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    Thanks much...will try it tomorrow, wish me luck lol. :D
     
  15. JDa

    JDa Full Access Member

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    I am going to be doing this next weekend. Couple of questions:
    -I understand the axle seal is a pain in the rear, but what makes it so painful to replace? Any tips if I do have to replace it? Not planning on replacing it, I just want to make sure I can handle it if they are bad.
    - anyone happen to know the part #s for the axle seal?
    - is there a place where the torque settings are listed?

    Thanks for the help.
     
  16. JDa

    JDa Full Access Member

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    Found the torque specs, anyone have info on the seals?
     
  17. CzarKJ

    CzarKJ Full Access Member

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    So passenger side the seal is recessed in where the cv sits. Can't exactly just put a screwdriver on the side and tap it. I had to use a slide hammer with reverse jaw and a relief cut. I used part number OAI16534.12 from 4wd hardware. Fits and works fine.

    Oh and if you find yourself fixing a seal replace the bearing that's behind it.
     
  18. JDa

    JDa Full Access Member

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    Thanks!
     
  19. JDa

    JDa Full Access Member

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    Follow up question, do I need to grease either end? Doesn't appear to be any on the ends when I took the cv axles out of the box.
     
  20. CzarKJ

    CzarKJ Full Access Member

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    Nope. But a dab of antisieze wouldn't hurt I would think.