Posted by Steve@Advance on October 16, 2017 at 13:10:13 from (24.182.105.179):
In Reply to: massey 50 posted by dennisj81 on October 16, 2017 at 12:05:19:
According to the IT manual, before serial # 500630, the relief is 1900-2300. After that serial # it is 2300-2800.
Says to check with the position control in the full up position, but I think you would need to chain the 3 point down, somewhere in the middle to get a true reading.
The relief pressure is set, non adjustable. There is a relief cartridge screwed into the pump.
You can check for internal leakage by removing the inspection covers, looking in with a flashlight (DON'T REACH IN THERE!) for oil swirling around down by the pump, which would indicate a leaking relief valve or blown oring on the stand pipe (that brings oil up to the cylinder), or oil spraying down from above, which would mean the upper oring on the stand pipe, or the cylinder seals leaking. Some seepage from the cylinder seals is normal.
Of course all this depends on the remotes being closed off.
That originally had 90 weight mineral oil, which is too thick for cold weather. Most run 15w40 engine oil.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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