While waiting for another parts order to arrive, I moved on to restuffing the can capacitors.
Very easy to cut them open by rocking a fresh box cutter blade over the aluminum right below the cap lip.
Here's what I found inside.
There appears to be a pressure release value under the cap which should make it trivial to reattach.
I'll try using some big o-rings.
The new caps fit easily inside the empty can.
I'll transfer the original terminal lug to some new tinned brass rod and thread it through the base for the positive.
Which leaves the negative. I might try some aluminum compatible solder or sneak a ground lead out through the base.
