I just adjusted my valves. I used two 9/16" open wrenches, one being a stubby. I didn't need to grind down anything. The job gets easier after the first valve. Since I removed the injectors, I used the CAMSHAFT to rotate the valves. No problems in that, except that I have bent some of linkage in replacing the valve cover. I just found a picture of the correct linkages at this site, which is helpful. I found that ALL of the valves where tighter than specs. As soon as I complete re-connecting the linkages I will test drive.

I removed all of the fuel injectors, several of which were loose enough to loosen when I removed the fuel line fittings. No need to do that in your case. I was just curious. I DID also remove the fuel return hoses in order to remove the injectors.

Good luck on yours.

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Jeff Naumann
Torrance, California
1972 220D 138k miles (sold)
1982 300SD 263k miles
1989 BMW 750iL 183k miles
1993 Dodge D250 Cummins 5.9 202k Miles