Originally posted by Rosie
You should be able to free up the ends with the rods mounted on the vehicle. It'll just takes a bit of work because you're fighting the resistance BOTH ball joint ends at the same time. Also, some of the force you put on the rod will be taken up by the springy twisting tendency in the rod. If the ball joint ends are REALLY rusted, it may be beneficial to use 2 pipe wrenches simultaneously, one on each end of the rod, a bit inboard of the threaded sections. Once they initially break free, you should be able to squirt more oil in the slot on the rod and they'll free right up, usually.
If they're so bad that the balls joints break during this procedure, you should probably have them replaced anyway. This is also the point where the vise comes in.
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