YUCCCH!
1st, Thanks Boosterbenz for DIY.

Today I removed the fuel sender and cleaned it up and so far it seems to be working properly.

1. got the giant socket from a mechanic I know. Kept it hand loose and drove home.
2. Able to remove bottom clip with a small set of pliers very easily...Just apply soft firm grip and turn unit to loosen.
The fsu disassembles very easily.
Then I found the GUNK. (No pics unfortunately. My son thought his digital camera was at a friends....)
3. The best tip I have is to use a small spray can of Electronics Cleaner from the AP store, used for car batteries. Spray everything including the inside of the casing tube, which otherwise would be a ***** to get clean.
I had one and it cleaned like new without touching the FSU and disturbing the wiring. The stuff cleans and dries in seconds. I then gave a quick spray of Anti- corrosive battery terminal spray on the contacts just for good measure.
4. Reverse steps to assemble, and so far a working Fuel gauge....

__________________
'87 924S
'81 280SEL

Sold ->

81 300SD -
93 300E w/ 3.2
85 300D-
79 300SD
82 300CD
83 300CD - CA
87 190E 5 spd
87 Porsche 924S

"..I'll take a simple "C" to "G" and feel brand new about it..."