Hydraulic leak help on Wheelhorse C-145

[TonyToro Jr. 2,193]

Mods if I didn’t put this in the right section feel free to move it.
Good afternoon everybody.

2 snowstorms ago I started to see a was small wet spot under my C-145 after plowing. Didn’t think much of it. Got through this past storm yesterday and came out this morning to a big wet spot and still leaking. The problem is underneath the valve body. It isn’t any of the hydraulic lines. But may be some of the fitting. I’ve done some research and they do have o-rings that seal them. I am thinking that may be the problem. Let me know what you guys think and how hard it is to replace those.

Sorry for not the best picture I’ll try and get better ones tommorow.

Thanks in advance!

Edited 15 hours ago by TonyToro Jr.

[c-series don 10,850]

First thing I would do is clean that whole area, then clean it again. Then you can pinpoint where it’s leaking from, but seeing up in there kinda sucks. I can’t remember if they’re O- ring style fittings or not. 

[Brockport Bill 2,138]

hard to tell what you are referencing since the photo is such a narrow close up? I am not sure if the C145 has master hydro valve same configuration as C175h -- but i had leaks from area of master valve inside hoodstand -- your photo looks like the hoses coming out side panel hole that has rubber gromet ???? In the case of my two C175s, i could not determine what was source of leak - the master valve unit, a hose fitting/connection, or a hose itself? Removing and reinstalling from the tractor the master valve unit was a nightmare - did not want to guess the source of the leak so did not want to do the job more than once .......so i removed the master valve unit - and replaced the internal O rings and also spent the $ for 4 new hoses. Both c175s now have no leaks. It might have been as much a future repair maintenance prevention as much as it was a leak repair -- but i now have no leaks - - and hopefully no future leaks. I believe you can generally locally source new fittings or entire new hose sets -- or order from online or some Red Sq vendors. good luck -- more photos will be helpful ?

[Bill D 2,463]

Looks like leaking spool valve orings.  @cleathas a nice write up with pictures that shows how to change them.  It's possible to change them with the valve in the tractor.   Clean everything well before you start.  Use Viton orings only.

[953 nut 63,291]

13 hours ago, TonyToro Jr. said:

It isn’t any of the hydraulic lines. But may be some of the fitting. I’ve done some research and they do have o-rings that seal them. I am thinking that may be the problem

I doubt the "O" Rings on the fittings are the problem. They are torqued to 260 inch pounds from the factory and unless someone snuck in there with a wrench they won't move. I would say @Brockport Bill has the right idea, do it all and do it right.