Posted by Steve Lehman on July 11, 2009 at 20:19:00 from (70.13.177.108):
The hydraulics on my Oliver 70 (M & W add-on pump mounted behind the governor - live hydraulics)are making a rattling noise. I assume that this is due to overheating of the fluid (using all-season hydraulic oil). Am I using the correct oil in this, or should I be using a straight weight oil? Their is a 3/4" suction line that goes from the reservoir to the pump, and a 1/2" pressure line that goes to the valve. The valve is mounted on top of the reservoir, so I assume that the oil passes through the valve and dumps back into the reservoir when it is not used for lifting. Is it possible that the fluid is not dumping back through the valve fast enough? There is another inlet on the reservoir - I could run a bypass to that inlet and regulate it with a valve when I am not using the loader. I would appreciate any ideas. Thanks.
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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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