I've got a small oil leak at the top of my prop governor ('78 J - IO360-A3B6D). It's coming from what I believe to be a pressure-relief adjustment screw/bolt. The prop/governor are functioning perfectly normal with no issues; the minor leak was discovered through routine inspection during an oil change.
I found reference to a McCauley "service letter" (1998-22A 12/10/1998 LEAKING OF GOVERNORS FROM PRESSURE RELIEF VALVE ALL GOVERNOR MODELS) but can't find any more information about this in a short time of searching online. Does anyone have any more info about this they could share, or have a suggestion where I might read a bit more about it?
Though I don't believe this to be a safety of flight issue I do intend to resolve the issue in the near term. The governor has less than 400 hours since overhaul by Tiffin Aire but I'm hoping this can be resolved without having to remove and return it.
Any ideas about this or the service letter?
Cnoe