I have just finished fettling my AGM p66 table lamp. Also what can i use to fit in the threaded part to pump it up.
I use a regular Coleman pump. It works well enough, even if some air pass outside if you don't press it hard enough against the air hole in the lid.
Old Schrader valves can normaly be adapted to fit threads like this. I took the brass block from a Primus Pump NRV and silver soldered it to the end of a Schrader valve. The Primus thread fits most of the American filler cap inlet needle valves which enables the use of a cycle pump. ::Neil::