Originally Posted by rognyt23
Some have the lift pump bolted to the engine. Mine doesn’t. The tank is 65 gallons so even if it is down the 15 gallon as it is, it is still 500 lbs to work with. Lift pump is varied by model year. I wish I could have had a 96. I thought about looking for a bung hole on bottom of the tank to mount an external electric pump but the issue of pouring diesel all over me and everything else sounds like a bad idea. Don’t know where to safely store 50+ gallons to empty it.
As others have mentioned, siphon the fuel off into a 5 gallon can then dump into a 55 gallon drum . I paid 15.00 for a clean closed head drum here in pdx. With the age of your bus it probably needs the tank cleaned out anyway.
If you really don't want to pull the tank its not hard to measure through the fuel door to the sender location then get the approximate location of the opening covered by your floor. Probe the area with a small like 1/8 bit until you find the edges then carefully cut it out .
I would really recommend pulling the tank and thoroughly cleaning it out. My bus came with service records showing it was towed for clogged fuel filters about every 2 years. It was still clogging them even with the regular fuel filter changes it had.
I now have a clean tank, 100% new fuel lines from tank to engine and back. For me it is piece of mind that I will never mess with the tank on the road.