Working on my Burman Steering Box. I found a Washer underneath the Nut that holds the Drop Arm to the Rocker Shaft. It’s a special washer to hold an O ring or similar. Cannot find this washer anywhere in the XK 120 SPC. See pic below with the washer upside down to show the place for the O ring. This washer was heavily corroded.
Am i right in assuming that this is a later addition from e.g. the Mk 2 (like Washer Jaguar code 6428) probably used in an attempt to stop oil leaking via the Rocker Shaft? But the XK 120 has an Oil Seal in that position which makes another O ring unnecessary.