Replacing front hub seals L4310

[troverman]

I have a 2002 L4310 which is suddenly leaking a decent amount of oil out the left hub. Two questions:

1. What fluid should be put in here? Do you fill it at the rubber plug on the axle?

2. How hard it disassembly and replacement of the seal?

 

[rbargeron]

Good discussion of replacing seals here. The axle drawing posted there doesn't load now but I'll find it and attach it to this post by edit. Dick B

 

[troverman]

Thanks for the link, Dick.

I think it is a do-able job. Should I replace just the top leaking seal, or the other seals inside?

What is your opinion of the L4310? From your other thread, it seems you think the older Kubotas were better?

Interestingly, I have a 2013 B2920...much smaller, but actually has more hours. No seal leaks at all on this similar front axle design.

 

[rbargeron]

Posted the diagram above. I usually replace the leaker and the bottom cap. The A seal comes in two pieces - be sure to get the old one off completely.

I've had Kubotas a long time. I do think some of the older models were very well made. The front axle seals on the later L models have been a weak point. B's are somewhat lighter and axle seal leaks don't seem to be common.