Normal operating temperature is 100 degrees over ambient temperature. Anything above that would be concidered hot. If the system is indeed running hot then the system is staying on high pressure. The unloading valve is suppose to dump oil back to the sump when you are not using your hydraulics to prevent the oil from getting hot. Hot oil is thin and easier to slip by the gears from the high pressure side of the pump to the low pressure side. Does it sound like the engine is laboring all the time like you are constantly using the hydraulic system. Sometimes the tel-a-depth valve spool will hang up in the valve and not return to neutral and keep the system on high pressure. If you have weak hydraulics to the auxillary valve only then you need to check for a blown o ring on the check valve piston. Chuck
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Today's Featured Article - The Day Mom Drove the 8N - by Brian Browning. My Dad was wanting to put in a garden but couldn't operate the 8N and handle the old horse drawn plow he had found and rigged up to use with the tractor. Well, he decided to go get Mom out of the house and have her drive the tractor while he walked behind the plow. You got to understand that while my Mom is a hard worker who will always help whenever she can... she had never operated farm machinery before that day. Dad got her out there, explained how the clutch was the same as in our o
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