Okay, I've got the fuel sending unit out of the car...pretty easy.

Now, for the million-dollar question How do you get the big metal tube out? I'm referring to the one that houses the float itself. I want to clean up the contacts while I have the car down.

I've done a search, and other posts refer to a small nut on "the bottom" of the tube, but I can't find it. I've got a plastic sheath around a metal part which I would assume is where the fuel drains out, at the very bottom. On the top, I've got the 3 electrical contacts, and a plastic dowel and nothing else.

How does this work? Thanks in advance!

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2001 VW Jetta TDI, 5 speed, daily driver
1991 Ford F-350, work in progress
1984 Ford F-250 4x4, 6.9l turbo diesel, 5 speed manual
Previous oilburners: 1980 IH Scout, 1984 E-350, 1985 M-B 300D, 1979 M-B 300SD, 1983 M-B 300D
Spark-free since 1999