I wanted to find out how to seperate the body from the chassis.
Thank you for your help.Try TOYTRAIN : : OHO®-Dampflok for an expoded diagram.
From memory, undo two screws on the cab backsheet (either side of the buffer), and two screws under the cab. Then the (green) cab comes away, The (black) boiler is just a clip fit, lifting from the front end.
All the best
David