Originally Posted By: SubLGT
Originally Posted By: eljefino
Don't do it. If the ball joint seizes or just gets really stiff the taper could start spinning and would hog out the knuckle. If the cotter pin snaps it could even unscrew the castle nut.
If the ball joint seizes, isn't it better to have the stud turn, than have the stud be broken off?
If the joint seizes, the stud will eventually break off regardless.
If a seized balljoint stud is able to rotate, it is true that it will
probably not break on account of
torque, at least not for a while, although the hole in the knuckle will eventually get destroyed (which is not repairable).
But a seized balljoint will be subject to excessive
flexing stress at the stud
even if it can rotate, so it will eventually break from flex anyway.
Do not apply any sort of lube to the balljoint stud.
To easily and quickly remove any balljoint stud from its tapered hole very easily and reliably, no matter how tight, use the correct and quite-inexpensive tool:
http://www.harborfreight.com/3-4-quarter-inch-forged-ball-point-joint-separator-99849.html
Other sizes are available, and all can be ground-out by you to handle larger joints.