Wiper transmission arm bushing removal?

Which bushings? The plastic ones that go over the linkage pivots as circled or the ones that go through the cowl and bolt in place. If it's the plastic ones it will depend on which design it is, most are more or less a one way item, you have to cut the old one out, then when you install the new one you put it over the pivot and press the parts together, the inner pivot combined with the outer bracket locks the pieces together. That is if you can get the correct bushings though.