Then I detached the reservoir from its bracket. Also, I have to determine, which of the two hoses the return hose is. You can see it, when you look into the reservoir. ON the Ford Fairlane NL and the S-Type the return hose is the upper hose, but this here is the other design as used on the X-Type: The lower hose connects to the pipe, which rises up INSIDE of the reservoir so that the lower hose effectively becomes the "upper" hose, if you know what I mean.