By the way, on this board, I readd that we must not rotate the crank reverse direction. But the tech rotated the crank a little reverse to check tightness. He said when he worked on stretched chain, he could feel free play when he rotated crank back and forth.

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1992 300D 2.5 turbo diesel. 319 k miles.
124.128 chassis, 602.962 engine, 722.418 tranny.