This is a photo of the PTO/Axle Pivot Assy. There is still a seal and needle bearing in the smaller end of the housing.
I tried to take this out of the axle while it was fully assembled. I tapped on the rear of the shaft and initially it moved, but it soon got tighter and I hit it harder and harder. My thought at the time was that if the bearings had been run dry for a long time, they were probably shot and would need to be replaced anyways, but after it was too late, I discovered that this was not the case. As I hit the center shaft, the small External Retaining Ring that goes on the groove in the shaft deformed, and came out of the groove. I was then able to just tap the shaft all the way through.
After the shaft came out I tried using a punch to drive the housing out of the axle, but that did not work very well. I then discovered that a 1 1/4" deep impact socket was the perfect size to use to drive the housing out. I had to hit it hard, and a lot of times, to get it to come out, and I liberally applied PB Blaster several times during the process. It was up on my lift so I had ideal access. It would have been a major PITA to remove with the tractor on the ground.
When I got it out, I inspected it and discovered that the exterior had no grease on it, except for some that seemed to have been baked on. There was also very hard caked grease in the groove that is supposed to carry grease around the housing.
To my surprise, there was still a significant amount of grease on the inside of the housing, AND the bearing at the front of housing is "sealed" on both sides, so even if there was no grease in the housing it still would have been OK. Even after being pounded on, it still feels good. Had I not pounded on it, I would have reused it, but I can get a new bearing for $6, so I will replace it. On the other end(still in the housing) there is a seal and a needle bearing that probably would have been OK, except for when my punch slipped off of the housing and damaged it.
If I had removed the Internal Retaining Ring from the front of the housing, tapped the shaft and the front bearing out(the bearing came out easy) and then used the socket to drive the housing out, I think everything could have been cleaned, reassembled and reused.
Front bearing 1641 2RS(<$6 at Fastenal)
I rotated the housing back and forth with a pipe wrench to help get it loose. At times I had to put a cheater pipe on it, to get it to turn.