Removing the fuel screen in the W123 tank requires a 46MM (1-13/16 inch )wrench or socket. I have the Harbor Freight very large socket set and ground down the 46mm sockets height to fit the screen. I also ground flat the sides of the socket to put a wrench on it. I also have the Harbor Freight
large Metric wrench set. So for $70 or so you can do what I did.

I found this flat stamped steel wrench at 1-13/16 for a coupe of $$

http://www.instawares.com/caster-wrench-flat.142-1367.0.7.htm

$2.99 plus $7.48 shipping for a total of $10.47 is not a bad price.

Or these guys at $9.80

http://www.twinsupply.com/proddetail.asp?prod=142-1367

If anyone buys it, let us know how it works.

Dave

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1970 220D, owned 1980-1990
1980 240D, owned 1990-1992
1982 300TD, owned 1992-1993
1986 300SDL, owned 1993-2004
1999 E300, owned 1999-2003
1982 300TD, 213,880mi, owned since Nov 18, 1991- Aug 4, 2010 SOLD
1988 560SL, 100,000mi, owned since 1995
1965 Mustang Fastback Mileage Unknown(My sons)
1983 240D, 176,000mi (My daughers) owned since 2004
2007 Honda Accord EX-L I4 auto, the new daily driver
1985 300D 264,000mi Son's new daily driver.(sold)
2008 Hyundai Tiberon. Daughters new car