The pins should have a ring around them that a flat piece of metal fits in that is held in by a bolt once you remove these then take a heel bar place against frame and push pin out far enough to grab with a big pair of channel locks then pull pin out.if the unit wasn't greased regularly the it may be a little tougher
Once the pin is out put a bar under back of cyl and pry it up and out of the cradle
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