When you cleaned and took. Off again wasn’t still leaking? Also notice an inflight issues?
How long since the prop was overhauled? I had that issue with a customer's Twin Comanche that had been sitting for a dozen years, though only had 120 hours since overhaul. Most shops will only overhaul if the last overhaul was more than 10 years ago. That was particularly egregious in this instance as the only issue was bad seals and the risk of internal corrosion, which will be detected as soon as the prop is disassembled for resealing. Found a shop in Colorado, Aero Prop USA that would do the reseal job. Props were fine inside except the seals and saved at least $6K for the pair.
I do use the prop to pull and the cowling to push in combination with the tow bar.
You had to send it out for that right?
Hi Kristin, it was last overhauled 2014. 390 since tso. Just spoke with my mechanic and said I may need overhaul. He stated to clean it for now and fly it again to see if it still leaks. Annual was about 7 hours ago but with a different Ap/ia. It shows he greased 1oz with aeroshell 6.
It really depends on how much and whether it continues. A little bit of grease looks like a lot when the prop is being spun at 2400rpm. When I first started to see small streaks, I flew it another 200 hours until I rebuilt it. Even then I could have probably flown it a good bit further. I have an MT 3-blade composite. According to MT, unless you are seeing large amounts, it is difficult to run the hub out of grease. I would wipe it down and monitor closely for the next few flights. You might also pull and clean the inside of the spinner - your A&P recently lubing it could have created a bit of excess to leak.
4 times is excessive. Plus many pilots pull too far back on the blue lever at run up. I really like Mike Busch's books as he gives very practical advice to stay safe, minimize unneeded maintenance, and reduce maintenance-induced failures. At run up, you're just trying to verify the governor is operational and, when cold, circulate a bit of warmer oil into the hub. Yanking the blue lever and slowing a prop spinning 2000rpm by 600-800 rpm at run-up puts a lot of unneeded stress on the prop, which can excessively wear bearings and seals. Mike says to gently pull back until the rpm drops 100 rpm or so, which accomplishes the desired objectives.
I’ll try to remember that. I do remember reading about circulating oil (not sure where it actually goes), but my mind keeps thinking it’s a good thing to do. I need to start doing it once but after the airplane sits for a couple week I like to make sure everything is good before flying.
