First things first. That hole for the large wheel needs to be re-bushed. You also need to make sure the pivot is burnished, so any marks on the pivot will need to be removed. You do not need one of those horrid bushing tools, they are a waste of money, do the re-bushing by hand. The reamer if used correctly will self center to the hole. The power is shutting off because of the angle of the wheel, it can not mesh correctly with the other teeth/ wheels. this will cause the beat of the clock to become shallow and stop the clock. I'm sure once this has be repaired the movement will have a better action from the escape wheel to the pallets, at the moment I can tell the power is shutting off causing the escape wheel teeth to become shallow to the pallets and it stops. The best clock oil to use is Windles.
There's a lot of good info in this thread, just to chime in and stress that the hole really needs to be re-centered before proceeding. Often the wear is within the oil sink, and that is normally well centered, and you can use that as a visual guide. In your case the wear has gone outside the oil sink; ideally here I use a compass with a wide point and scriber tip and make a now concentric circle around the hole, then file up to that with a round file. Then ream to size for a bushing.