I'm rebuilding my '69S engine. Previously, somebody installed solid timing chain tensioners which I am replacing with standard mechanical tensioners (rebuilt) from a '70, and I have the safety collars as well. I'm ready to install, but am stuck at the following step.

The factory service manual says to slide Porsche special tool (gauge ring) P214v over the plunger, loosen the bleed screw on the side of the tensioner, depress the plunger until the gauge ring is flush with the top of the tensioner body, and tighten the screw.

I don't have the tool, and can't find anyone who does or can sell me one. I haven't seen one, but I expect that it is just a 1-2 inch diameter collar, maybe a half inch tall with a hole in the middle. Does anyone have one of these that can give me the dimensions. Has anyone actually done this? The shops say that they just install new mechanical or pressure fed tensioners, so they didn't even know about this procedure.

Any help would be appreciated.

Thanks,

Bob