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Not sure on damaging anything going full stick but is concern of system pressure stalling the engine and or what are the pressure spikes when you turn, feather etc. I think you need to get a gauge and fittings or phone a friend that has them to determine what is going.

Are the hose ends the same where they connect to the motor and PO check block? If yes could you just loop the C1 & C2 ports together? This would remove the track drive motor from the rest of the circuit. If you can feather the control that would point towards a problem in the motor or track...

Interesting thought on track binding but why does it work full speed reverse and not when trying to operate at less than full speed? If this unit has blade on front should be easy to lift both tracks off the ground with blade and bucket and see what happens. Duhh this is a dumper not a mini ex...

Maybe I can help explain what to look for and why when watching the hoses going to the travel motors. When trying to drive one of hoses going to the motor will or should free flow through one of the PO checks down to the motor. This hose will see some pressure in trying to drive the motor. If...

2manyrocks, In that picture of the block for track motors the schematic on the side of the block shows being dual pilot operated check valves C1 & C2 should connect to the motor. Have you driven it down a hill? Curious how it will respond with those po checks in the drive circuit. I tried a...

Are there any marking on the the blocks bolted to side frame that I believe are labeled LTR and RTR which i presume is left track and right track. It looks like there is valve sticking out one end but can't see the back side. These could be some form of pressure control for the track motors or...

The pictures show a double gear pump. I suspect one pump feeds left track and other feeds right track. Is this correct? Would suspect that while trying to feather the track drive the valves are restricting flow to the point of reaching close to system relief pressure but that is something you...