Posted 30 March 2007 - 11:12 PM
That ring in front of the cell has GOT to come off. It eitherunscrews OR it gets pryed off somehow. That one is so old I bet it would come off if you used a BIG pipe wrench and wrap that ring with a jar opener rubber disk, apply the wrench jaws to the side of it and CAREFULLY start twisting in a counter clockwise direction. It ought to come loose.
For support, line a shop vise with a rubber mat or wrap the tube with a rubber mat and get it tightened down in the vise. Be careful not to overtighten it to mar the finish on the tube though.
Tell you what...I bet I'd get it off! Even try applying a drop or 2 of WD40 oil on the lip of that ring and let it work itself in for a little while. I really do not think this is going to do any damage to the objective unless you spray the whole can in there!!!
After it is removed, you can easily wash off the tiny bit oil that may get onto the side of the lens. Once this is overwith, you're on your way in restoring and cleaning this up...
Let us know how this works out for you.