Ball Joints/ Control Arms

Discussion in 'How To' started by kj705, Aug 30, 2020.

  1. MarksmanAkula

    MarksmanAkula Full Access Member

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    If i remember correctly i took mine off just so i could get the lower ball joint out of the knuckle. All i remember is hitting mine with a big hammer, as my press wouldn't fit.

    Not sure about other KJ's though.

    I did remove my axle hub nut mostly because i was replacing my wheel hubs at that time as well.
     
  2. kj705

    kj705 New Member

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    How do you remove the nut without the axle spinning? I already took off the caliper and all the nuts on the ball joint?
     
  3. tommudd

    tommudd Moderator Staff Member Moderator

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    Long bar between two wheel studs will keep it from turning
    remove the whole spindle, get it out where you can work on the u-joint
    if you do not have the correct tool to press out the LBJ, cut the top part off , then one of the included tools will work to shove it out
    to loosen the ball joints just smack the spindle with a 3 lb hammer , one correctly landed hit will pop them loose
     
  4. kj705

    kj705 New Member

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    Cool, thanks. I need to get the axle nut off on the 4x4 right? After the axle nut, does it slide straight out?
     
  5. MarksmanAkula

    MarksmanAkula Full Access Member

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    With my axle nut i have a 1/2" high torque impact. A few hits with a 35MM socket and it spun right off. Never tried the breaker bar method.
     
  6. tommudd

    tommudd Moderator Staff Member Moderator

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    I use a battery powered impact as well but the bar works great
     
  7. kj705

    kj705 New Member

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    So put a bar through 2 studs and one of the ends into the ground?
     
  8. duderz7

    duderz7 Full Access Member

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    I personally prefer the brake caliper bracket mounted and a large screwdriver into the disc vent up against it to keep it from spinning method.
     
  9. kj705

    kj705 New Member

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    that’s true, i guess i can throw the caliper bracket back on
     
  10. lfhoward

    lfhoward Full Access Member

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    You should be able to replace a ball joint without needing to remove the axle nut.

    oops, didn’t see the second page of replies! :rolleyes:
     
  11. kj705

    kj705 New Member

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    How would I press the old lbj out and press the new one in with the steering knuckle on the car?
     
  12. lfhoward

    lfhoward Full Access Member

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    The LBJ is pressed into the lower control arm. Once the ball joint is released from the steering knuckle, can’t you get the LCA to drop down and then press it out? You’d need to rent some kind of puller. I can see how it would probably be easier if you could remove the axle nut and then swing the knuckle out of the way.

    Sorry, I haven’t done this exact job before. I did a hub bearing a few weeks ago but decided not to disconnect the ball joints from the knuckle on that job. I am going by what I remember of how things were connected together.
     
  13. tommudd

    tommudd Moderator Staff Member Moderator

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    You can't really, the CV is in the way , goes right over top of the ball joint.
    Now on 2 wheel drive KJs yes you can, very easy
    And for the amount of time it takes popping both upper and lower ball joints loose, makes it a whole lot easier
     
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  14. kj705

    kj705 New Member

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    Pressed in the new LBJ. I hope the grease fitting is facing the right way I got conflicting info from YouTube and the MOOG instructions it came with. Going to put the new upper control arm in tonight.
     
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  15. tommudd

    tommudd Moderator Staff Member Moderator

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    To the front , you tube, oh my
     
  16. uss2defiant

    uss2defiant Full Access Member

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  17. kj705

    kj705 New Member

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    haha
     
  18. kj705

    kj705 New Member

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    Didn't see South Main Auto made a video about this. Thanks!
     
  19. kj705

    kj705 New Member

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    got the upper control arm bolts finger tight and put the steering knuckle back on. do you guys know if it's a good idea to add chassis grease to the spindle that the steering knuckle goes into?
     
  20. kj705

    kj705 New Member

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    thanks everyone for the help! finished the drivers side upper control arm and lower ball joint, finished the rear tri-link. All that's left is to get the stripped lug nut off the passenger side to finish the ball joint on that side.
     
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