MB Doc, thanks for the reply! I was able to pin the cams and remove the sprockets, and get all 3 chain rails removed from the head (the ones held in place with dowel pins). I've been taking photos and I'll update this thread with more info & pics when I get it back together.

One more question: Do the M119 chain tensioners really go bad? I thought the typical complaint of the "chain rattle" was almost always due to the faulty check valve in the oil filter housing (which I do plan to replace), not a bad tensioner. This is an early-build 1992 motor, btw, with 77kmi on it - the chain tensioner is original, it's date-stamped 1991. I've also heard there was a recall/upgrade to the original tensioners, but can't find any info on that. If you recommend that I replace the tensioner, is the aftermarket "SWAG" brand tensioner acceptable? I don't know if that is OEM or not. It's significantly less expensive than an OE tensioner from the dealer.


Thanks again!