Once I remove the compressor I can determine if it was a black death or a bearing seize. I have a parallell flow condensor so I must replace it under the black death senario. Black death is usually a result of not removing the mineral oil and adding the ester oil for R134a.
My system was completely rebuilt with all new parts except the manifold hose. The old AC system was rebuilt due to an evaporator leak not a system failure. Every components was new except the manifold hose and it was completely flushed with mineral spirits and then AC flush.
Synthetic oil was used, the proper amount. The system was evacuated to 29 inches for 3 hours and R134a added. I did have a schrader valve fail and all the R134a was lost. I replaced the valves and added 2 oz of oil, that was the amount I "figured" I lost with the vavle failure, the system was evacuated again and R134a added. I did not replace the dryer. I kept some freon in the system by capping the schrader valve with the dirt cap and then when I had the new schrader valves I quickly installed them and evacuated the system right away so I felt the dryer was exposed to "air" just a longs as when you initially install the dryer.
So hopefully this is a bearing failure not the black death. Can't get to it today or tomorrow, Flying. So I'll find out Saturday.

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