If one of the pipes is bust going to the compessor and the place where it is bust is the aluminium section, get this welded by someone who does aluminium welding! You can take the pipes off using "Springlock" releasers (Metric) and allen keys. Just be careful of any O'rings at the compressor and in the inner pipe at the sprinlock connection. Hopefully not too much oil will have escaped so you can get the thing recharged again by any refridgeration guy.