Howdy friends... I need to prep for my head removal (92 300D, OM602). Can anyone confirm the size bolt I'll need to use the "nut and washers" technique to try easing the chain guide pin(s) out? And can I just remove the upper pin if I am leaving the chain/cam sprocket in place while the head is off? I thought I read somewhere that this is possible.

I am emboldened do get this done after finding that my chain is NOT stretched beyond spec. Depending on how I look at the timing marks and the lines up at the cam sprocket, I am AT WORST at 3 degrees, probably less. The chain looks good, as does the sprocket; chain appears to have been replaced at some point as it is stamped "Made in Japan." Odd, but hey, I'm not complaining.

Thanks!

__________________
1992 300D 2.5T
1980 Euro 300D (sadly, sold)
1998 Jetta TDI, 132K "Rudy"
1974 Triumph TR6
1999 Saab 9-5 wagon (wife's)