"Take out fittings"---
If I could get them out easily this would be straightforward.
I'll take the spindle out and make a right angle poker to probe into the grease hold from the inside. I suspect if I root around in there and loosen up the plug I can then apply pressure with the grease gun and it'll accept grease. A claw hammer seems workable if that doesn't work out.
I'm undergoing daily radiation treatment on my leg as well as working FT job, so my cub time is limited.
Oh, this is the rusty mutt tractor ...which has a surprisingly strong engine. It's sat outside for a lloooong time in the NC rain