Oil filter housing off to put that screw back in?! Thats a definite 'I'm not worrying about it'.

Maybe this is a German mechanic trick...once you get that screw off, leave it off for the next German mechanic who needs to mess with the pump.

thanks,
dd

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'85 300D, 'Lance',250k, ... winter beater (100k on franken-Frybrid 3 Valve Kit)
'82 300D, 'Tex', 228k body / 170k engine ... summer car
'83 300TD Cali Wagon 210k, wife's car