Stage 2 - Disassembly of end cap
Once the end cap was cut from the can it was clear that this had been sealed by some form of pitch type material which had set rock hard. This all had to be removed to free the end ring and to get access to the other ring of metal with the tabs used to secure the can to the chassis - used when the capacitor connections lie underneath the chassis. At this stage it was the intention to re-use the Paxolin disc if possible but the tab ring wasn't required and could be discarded.
Took quite some time with a fine metal pick to remove all this material from the end cap:-
Eventually I managed to disassemble the end cap to leave us with the three components already mentioned - the end ring, the tab ring and the Paxolin disc with the connectors: -
Close examination of the Paxolin disc showed that it was in an advanced state of disintegration and I decided that it probably wouldn't withstand drilling and fitting of new connectors. So that left us with just the can and the end ring: -
Although most of the crud had been scraped out from the inside of the can there was still a waxy residue with embedded bits. What I did then was to stand the can upside down on a scrap piece if wood and then used my hot air gun to heat the can and melt the wax which flowed out onto the scrap wood. Any remaining wax residue was removed using cellulose thinners which left us with a nice clean can, ready for the next stages!