Here is some more information. The pump is a Webster Electric 3HCS-2R. The oil that I am using is the Wal-Mart (I'll take my lumps now) Year Around Hydraulic Oil. Have no idea on the weight. Looks almost clear, like a mineral oil. The noise seems to get worse when the unit warms up. The breather for the reservoir is on a 4" long standpipe, but the actual breather hole is 1/4" diameter and is not plugged. If the reservoir is full, oil will come out the breather. The reservoir outlet (3/4") is near the top of the reservoir, and there is no filter. As I recall, there is an elbow inside the reservoir that turns down for the suction line. The hydraulic valve is a Gresen. From the layout of the system, it must be an open center system. The tractor is a 3-gear 70 (1940), but the noise has nothing to do with the timing gears. I am in the process of installing a Horn loader with Sears & Roebuck single-acting cylinders on this tractor. It looks like I will have to get some additional reservoir capacity, since the volume of the cylinders appears to be more than the volume of the reservoir.
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Today's Featured Article - Timing Your Magneto Ignition Tractor - by Chris Pratt. If you have done major engine work or restored your tractor, chances are you removed the magneto and spark plug wires and eventually reached the point where you had to put it all back together and make it run. On our first cosmetic restoration, not having a manual, we carefully marked the wires, taped the magneto in the position it came off, and were careful not to turn the engine over while we had these components off. We thought we could get by with this since the engine ran perfectly and would not need any internal work. After the cleanup and painting was done, we began reassembly and finally came to t
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