Bill, Thanks for the info. I gather the rock shaft will slide sideways once the lift arms are removed. My tires are wide enough to get the arm off but maybe not to pull the bushing. No big deal to remove the wheel.
Wish I had a cross section of the rock shaft assembly so I had some idea about how to pull the bushing. Is there a shoulder on the bushing to rig a puller against? I have a repair manual but it does not cover the rockshaft assembly.