I may be a newbie of sorts with MB's but I don't understand how much different it would be to check the valve lap between the valve and lifter or between the lifter and cam lobe. On most non OHC engines you check it between the valve and the rocker arm.

Please enlighten?

Stephen

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85 300D 305K miles WVO(105K so far), Mine
82 300SD 235K miles BIO-D, Wifes
96 F250 SC PSD 4X4 285K MILES BIO-D, Ours
89 BRONCO 182K MILES sold
Finally Compression Ignition Only!