Easy little trick for spinning ball joint studs

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RussellSullivan

RussellSullivan

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I was buttoning up the steering knuckle on a Jeep this evening, and the upper ball joint stud would spin after the castle nut got so far onto the threads. I thought some lubrication might persuade it to thread the rest of the way without influencing the ball joint stud. Long story short, a tad bit of ATF on the threads of both the stud and the nut helped me get it tight and get a cotter pin through. Not sure if anyone else has done this, but it was a quick and easy solution for me tonight.
 
what if you tapped onto the UCA forcing the morse taper ball stud into the UCA? It may hold the stud enough to tighten the cranky nut, lube wouldnt hurt on the threads either.
 
pishta said:
what if you tapped onto the UCA forcing the morse taper ball stud into the UCA? It may hold the stud enough to tighten the cranky nut, lube wouldnt hurt on the threads either.
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It was in about as far as it would go. I just thought it was a handy way of getting it done without too much headache. This Jeep is on it's way out, and the steering knuckle and/or ball joint could very well be worn enough to allow it to spin.
 
You can also use a bottle jack to hold the taper up in its bore. Just a little pressure is all that is usually needed.
 
I always use a prybar and jam the stud back onto the spindle and hold it tight and whip the nut right off with an impact. Nuthin to it but to do it.
 
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