L2900DT-GST (4wd) Chronic Hydraulic leaks - at wits end.

[GreensvilleJay]

The saga continues...

Since putting on new hoses, there are no more leaks at the pump or the diversion valve (yet). Last night I pulled the tractor into the garage, and this morning there is a leak under the front right steering arm casting. It looks like the gasket holding the outer and inner sections of the casting together is leaking. Or maybe the casting wasn't put together tight enough. Or something.

I tried a wrench on the bolts holding it together and they are damn tight, so unlike the pump, this is not a matter of a bolt not being torqued enough. If there is a tightening pattern maybe it wasn't followed?

The dealership's work notes say they "Replaced Front Axle Swivel Seals" on both sides. Could this be related to that? I found this video online showing that job, and it looks like this seal is part of it. Should I jack up the tractor and take that arm off, look at the O-ring inside and reset it? Any other spots to start? Any other spots that are more likely to be the source of oil dripping from that seam?

Edit to add: The oil leaking out here is strong smelling, oil-coloured oil. Not the red transmission fluid that was leaking elsewhere.

Oddly I did a similar seal(the real swivel joint) today on my BX23S.....after weeping for 2 years I finally decided to fix it.
For you, #070 oring in NIW #31 post may have not been seated right. It's a bit of a challenge ( well for me...) to hold and align the heavy piece onto axle and then 'wiggle it and turn the bolts in N-S-E-W, repeat, again and again. the idea is to pull the part flat and square onto the axle. If you don't ,you could 'squish' the 0ring. it took me 15-20 minutes so anyone younger, without bifocals could do it in 5 minutes......

I use 80-90 oil, it's thicker than PUDT and a LOT cheaper. Sure 'stinks' though. Keep wondering if I could use 10W40 as I have 30+gallons of it here in quart cans.