Bernd,

I have enclosed a link to a repair kit..and a rebuilt pump. I only use the linked site because it is a great reference for price and availability.

I don't know what is involved in getting something to the Hinterland, but it seems like just purchasing a rebuilt pump would be a time saver. Good luck.

http://www.partsamerica.com/PartTypes.aspx?pgid=STERAMS&desc=Steering

Stuart