're a4 body removal not as straight 4ward as it may seem .seems to b some what easier if you remove the main threaded bar that hold everything on to centre drive wheel .remove screw that holds speed .remove don't bogie then there is a screw under the bogie and one on cartasie. There are 2 more screws under the back drive wheels remove these as well.take off front coupling. And gently remove you will have to prise the vallance. Over the cylinders. And the body should come away a bit tight mind you.hope this is of help