You need a valve spring compressor that hooks under the cam and then has a piece that slips under the rocker and allows you to compress the spring. I got mine from AST (Assenmacher Specialty Tools), but I have also heard that KD makes one that will work. They are used on just about all MB OHC engines. You also need to be sure that the piston is not near TDC or the valve won't go down far enough to remove the rocker.

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Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe