BX 2200 hydraulic Relief Valve?

[jcshacker]

I was running my Brother in-law's BX2200 with a front-end loader when I noticed hydraulic fluid leaking. Upon inspection I noticed it was coming out of what appears to be a hydraulic pressure relief valve. It is located under the seat and has a red button in the center on a rubber washer. I let it cool down and I checked the hydraulic fluid and it is reading way past the last hash mark on the dipstick. He bought it used and he said he has never added fluid or changed the fluid and he has never had the leak before. It was over 90 degrees today and I was running with full loads of gravel. Is this a pressure relief valve? Should I drain some fluid out down to the line on the dipstick? Why would it do it today but not for the last year?
Thanks!!

 

[TGD]

I think that the 'red button' is the breather for the hydraulyc system. Heat generated (and possibly foam) from the ambiant temp and being overfilled probably caused the fluid to expand enough to escape out the breather. Yes I would bring the level down to the full mark on the dipstick. That should take care of things.

PhilD

 

[ericbx1500]

Mine does the same thing during hotter days and when working it harder. Mine just gets a little wet around the breather and sometimes I get a little smell of hydro fluid. My fluid level is right up to par. This is normal and the breather is doing what it should be doing. I wouldn’t worry about it. Let your tractor sit over night and recheck the fluid level. If it’s still high drain some out.

 

[Doc_Bob]

Drain the fluid to the correct level and watch it for the next dozen runs.
Bob

 

[jcshacker]

I drained it down to the correct level and have been running it hard for a couple of hours with no sign of any leaks. Thanks to all who have responded!!!