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post #1 of (permalink) Old 07-12-2007, 08:12 AM Thread Starter
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YJ Ball Joints

Trying to get my Lower Ball joint out of the D30 in the YJ. Stu Olson's site says on the TJ the lower presses out by going up. MadXJ says on the XJ and MJ front D30 it goes down through the C to remove...I can't find anything that says which way the YJ ball joint should go. Before I fubar my Ball joint tool or the C, Tell me which way it should be removed. Up or down through the C.

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post #2 of (permalink) Old 07-12-2007, 08:30 AM Thread Starter
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For those of you madly googling the answer...

Once I took a good look at the recommended adapter for the Ball Joint tool, it was obvious...

The clue that should have given it away, the retaining clip on the Ball Joint, was long gone.

So for future reference. The YJ lower Ball Joint gets pressed out the bottom of the C.


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post #3 of (permalink) Old 07-12-2007, 08:40 AM
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The '78 FSM shows the lower being removed and installed from inside the knuckle. If it were the other way the weight of the vehicle would be hanging on the snap ring and the friction between the knuckle and ball joint. Interesting!
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Last edited by Jim_Lou; 07-12-2007 at 08:43 AM.
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post #4 of (permalink) Old 07-12-2007, 09:13 AM Thread Starter
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None of this is looking like intuition...Seems awfully backassward to me...

Any guesses on Torque? My Haynes doesn't list it. Dealer won't/can't tell me. I was gonna use Stu's numbers, but the ball joints are obviously not the same between the YJ and the TJ...

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post #5 of (permalink) Old 07-12-2007, 11:19 AM
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Here's what the '78 FSM has to say about it. I would think that all D30s go together pretty much the same way.
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post #6 of (permalink) Old 07-13-2007, 09:11 AM
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CJ and YJ ball joints are different. CJ's are pressed into the knuckle, YJ's are pressed into the axle C's. Also, CJ's don't need retaining clips and I suspect YJ's don't either. On both, the weight of the vehicle keeps them pressed in.

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post #7 of (permalink) Old 07-13-2007, 06:01 PM
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Why would they change a perfectly good design? Just to sell tools and confuse amateurs I guess.

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post #8 of (permalink) Old 07-13-2007, 07:31 PM Thread Starter
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Quote:
Originally Posted by Jim_Lou View Post
Why would they change a perfectly good design? Just to sell tools and confuse amateurs I guess.
Must be...The TJ's are different too.

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post #9 of (permalink) Old 07-16-2007, 12:20 PM
 
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Hi guys, according to my TJ FSM both ball joints push out of the axle. ie the upper one pushes up. Lower pushes down to remove.

Torque figures are 80 lb ft for the lower ball joint nut and 75 lb ft for the upper.


Last edited by Jonny Jeep; 07-16-2007 at 12:27 PM.
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post #10 of (permalink) Old 07-16-2007, 02:58 PM
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Been there, done that.

https://forums.off-road.com/jeep-shor...nap-rings.html

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88YJ: Old, noisy, slow, and just generally wonderful. Wheeling Jeep.
04WJ: Less old, less noisy, less slow, daily driver Jeep.
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