HST Hydraulic leak

[RobertDetomasi]

I have 1999 Kubota L3710 HST. Flawless performance for first 2000 hours of normal duty. Last 800 hours was very heavy plowing. Noticed hydraulic fluid leak. Checking fluid found no fluid in oil level window. Added fluid. Resumed normal duties(no heavy plowing). No more leaking. WHY???
So what happened? Overheated oil boiled over? Pressure relief valve worked. It's a mystery..............

 

[mddorange]

:welcome:
To TBN Robert. You came to the right place to get any question answered.

I can't help since I don't have a HST, but someone will be along that will have the answer.

 

[oldnslo]

If you noticed the leak could you tell in what area it was coming from?

First thought is something on the plow circuit since this appears to be when you noticed the leak