While looking to replace the Fuel Filter I noticed that the main Fuel Tank supply hose# 1264701675 is showing its age and the rubber has cracks in it. I figure I need to empty the Tank in order to replace it. In a way this would be the logical time to replace the Fuel Screen (is 2014700506 the correct # ?) and clean the tank. Can the tank even be cleaned without removing it from the car ? How? What do you think. Am I being overzealous here and asking for a major headache?TIA

300SE - 1987 Euro