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As MPM mentioned, keep the RPMs up. That translates to using a lower gear, if you have a choice. The lower gear reduces the torque necessary from the hydraulic motor, and reduces the pressure required from the pump, as well as pushing more fluid through the transmission cooler. This is...

I found this on another forum, the preventive maintenance for the problem is to change the HST fluid every 50 hours and add STP. Mike ShultzeThis may not be the same as Kubota tractors, but at work we have parking lot sweepers that have Kubota engines and are HST. They use the Kubota HST fluid...

Shane what did you find for a problem? Was there a spring broke in the HST and worn plate?