I'm removing the fuel tank from a '78 240 wagon, and have everything disconnected and unbolted except for the metal junction on the filler neck. I can see the tube above and to the rear of the right wheelwell, but can't see how it comes apart. The Haynes manual shows a pair of screwclamps connecting the fill tube with the tank neck, but naturally this illustration doesn't resemble the metal accordion-looking connection on this car. Anyone done this? Thanks!