R44 RII Hydraulic Reservoir Filler Size
On pre-flight noticed the hydraulic fluid in our R44 RII is lower than it was prior to going in for it's 100hr. No leaks found but as fluid is just showing in the sight glass, which is ok for flight, and not the middle area as normal I want to top it up and monitor for usage.
Anyone know what the filler nut size is - all the robbo maint manuals & POH's specify the correct torque setting 100inch pounds (11NM) but not the physical size? Just want to make sure I have the correct socket with me for the wrench. If not I'll have to get the verniers out!
cheers for any help