I have about 470 hours on the BX. I have been using the FEL alot to move large rounds of wood. Some of the Cherry Tree rounds must be 200-300 pounds.
I got the front axle off of the tractor and decided to put on new grassmaster front tires, they are 4ply and OEM on the BX 1500. I had to use lots of vaseline to seal up air gaps and get them to take the bead.
My blind bearing puller didn't do squat with the bushings, I had a local farm equipment mechanic pull them and press in the new bushing for 70 dollars. I put in new o rings and plastic spacers, and a new pivot pin. I cut grass for a couple of hours yesterday and everything seems to be good and dry on the bottom of the axle.
I think there are a couple of reasons for failure:
1. Age my BX is 10 years old
2. heavy FEL usage without rear ballast
3. heavy hours mine only has 460-470 hours. But a 1000+ hour machine will have more pin wear.
4. Someone mentioned pressure but, there are two breather bolt on top of the axle drive housing. I got my service manual from a famous online kubota retailer for under 70 dollars.
I got the front axle off of the tractor and decided to put on new grassmaster front tires, they are 4ply and OEM on the BX 1500. I had to use lots of vaseline to seal up air gaps and get them to take the bead.

My blind bearing puller didn't do squat with the bushings, I had a local farm equipment mechanic pull them and press in the new bushing for 70 dollars. I put in new o rings and plastic spacers, and a new pivot pin. I cut grass for a couple of hours yesterday and everything seems to be good and dry on the bottom of the axle.

I think there are a couple of reasons for failure:
1. Age my BX is 10 years old
2. heavy FEL usage without rear ballast
3. heavy hours mine only has 460-470 hours. But a 1000+ hour machine will have more pin wear.
4. Someone mentioned pressure but, there are two breather bolt on top of the axle drive housing. I got my service manual from a famous online kubota retailer for under 70 dollars.