Tc18 loosing power hst and hydraulics

[Hollyblue]

My tc18 ran great till yesterday when using it heavily (for the size). It started to lose power both HST and hydraulic. Started it today and quickly lost power again. (I'm guessing it warmed up) Related or not, I noticed it was dripping (drip every 10-15 seconds when running and under load with bucket lifting tractor front) hydraulic fluid from under the diesel tank area on to the gear case right behind the starter. First tractor, and haven't found a thread where both HST and hydraulic lost pressure. Not a clue on what to do, and need it up and running ASAP. Also was running in some deep clay mud and may have hit a log, but see nothing wrong and may also be unrelated. I was running it harder and longer than I normally do and hydraulic oil seemed to be quite warm. Any advice would be greatly appreciated!! It also has a yannmar diesel.

 

[ericm979]

Check the transmission/hydraulic fluid level.

 

[Hollyblue]

Levels good, and not noticing any drop. Changing filters, but couldn't find any threads that seem to link the two together. Saw a thread that said something about a screen, but can't find the thread again.