On a 617 shutoff element the Gearhead 5 degree wrenches will not fit. I use a short box wrench for the 2 drivers side bolts and a 1/4 drive Sears Chraftsman socket set for the 2 passenger side bolts. Then I pull the shutoff element out along the block to the rear of the engine and remove it around the back of the oil filter housing. The U shape and S shape wrenches are usefull at times. But not on the shutoff element.

Also you must unbolt the tranny vacuum control unit on the top of the injector pump. Just the two top bolts. Not the IP linkage.

On the 616 engine I use just the 1/4 drive socket set. It fits quite easily.

Dave

PS you must also disconnect some of the vacuum line that are in the way. I highly recommend disconnecting the vacuum pump to booster line. It's easy to break the 2 nipple coming off the line and then its very expensive to replace. Removing it is easier. Also before disconnecting any of the components I recommend taking a digital picture of the lines and setup for easy reassemble

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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