There is a big rubber hose that runs from the metal filler hose to the tank. It looks simple enouth but after loosening the hose clamps I cannot get the hose to turn or move. Also there is a collar or ring that is up against the hose clamp by the tank that can turn and can tightly slide down the hose. What is that ring or collar for? Once I get the big rubber hose removed and the smaller hose removed then it seems like it is easy to remove the tank. Thank you, Randy

Cars & Trucks - Cadillac - Fleetwood - 1990 Cadillac Fleetwood