Not sure if you can do that.I have not seen the pics.I had to pull my middle gear out to fix the problem.I just bought another one and replaced it.There is no need to split the case.Loosen the pinch bolts and gently pry the middle gear out.Move it side to side but it will come out.Be sure to watch your shim placements too.If the nut and shaft are together snapped off ,you don't have much choice.