[x98boardwell]

I am use to the 930 oil fed tensioners where you can put a small allen key in once the shaft is all the way down and it will hold in the down position during removal and insertion.

On these I don't see anyway to do this.... Can you help me with the following? This is a 1972 2.4 liter.

1) Removal of chain tensioner... how to push shaft back in as well... or just proper removal technique will also help with that I'm guessing.
2) Removal of cams (can I slightly loosen all rocker arms and remove cam since I am only doing minor valve job (seals and guides) rather than remove all rocker arms and shafts..? The motor only has 2,500 kilometers on it and does not leak at all... so trying to save some unneeded work.

Here are a couple pics of both sides.