http://www.peachparts.com/shopforum/diesel-discussion/80341-order-installing-evap-box-w123-post526705.html#post526705

Here are the step by step instructions for installing the dash to a 82 300TD. Removal is basically in the reverse order.
Take lots of digital pictures for the instalation. It really helps. I took about 100 pictures for the entire AC rebuild, and wish I took 200.
I have not had any squeeks since reinstalling the dash.
This Christmas break my daughter and I will replace her the evaporator in her 83 240D.

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