Leaking steering joint

YanmarMatt · Nov 18, 2022

Anyone have an idea of what my issue might be here? I have a ym1510d. I used it recently to move some dirt and rock. After I parked it in the garage I noticed there was some oil on the front tire. See the picture. I am hopeful that’s a simple gasket to replace and relatively easy to access and then relatively easy to put more oil in. Does anyone know what component I might be looking for or what the issue I am looking at might be?

winston1 · Nov 18, 2022

Your knuckle seal is leaking. #8 here: 4WD_KNUCKLE_EXT: Yanmar Tractor Parts

This article might help you. Yanmar KNuckle Seal Replacement Instructions.

If leak is not bad some have had success with Lucas transmission stop leak. Sometimes bad bearings cause this. Your going to have to figure all that out on sight.

YanmarMatt · Dec 11, 2022

I read something on hoye regarding gear oil. Am I good to use 90wt or 80/90 or any similar gear oil when I refill?

winston1 · Dec 11, 2022

YanmarMatt said:
I read something on hoye regarding gear oil. Am I good to use 90wt or 80/90 or any similar gear oil when I refill?

My opinion, yes.

SPYDERLK · Dec 11, 2022

YanmarMatt said:
I read something on hoye regarding gear oil. Am I good to use 90wt or 80/90 or any similar gear oil when I refill?

You can lift the front end and check for play in the pivot assembly or if any roughness can be detected in the bearings. If if feels ok you can just go to using a light grease (0 or 00) in the front end. No more nuisance leaks.