Cheers everyone for the help sorcing some power steering parts. They might have to wait for a while tho as my truck smokes a lot and i might have found the problem. The smoke is particulary thick when accelerating. Having looked at the engine there appears to be an oil leak just above the injector pump between the block and the head. Im gonna hav to get a guy out to have a look i think but is the head gasked difficult on one of these and more to the point are they expensive? Any ideas, sources of parts, people to call are most welcome as i have never owned a truck like this before. Its a 330 turbo diesel engine.