In a quality hydraulic pump there is a passage drilled from the driveshaft end back to the suction port of the pump. a small quantity of oil moves along the shaft, to lubricate it, and is pulled back through that port,(drilled hole) to the suction side, or inlet of the pump. Whrn the pump is getting worn out, and there is slop in the shaft and gears, oil moves along them, to the above mentioned port faster than it can be returned, or pulled back by suction, often, high pressure escapes through that drilled port, and pushes out the shaft seal. The problem that you have described is a sign of a worn out pump..when you"re done throwing your money into parts...and finding that it still leaks, and is popping the shaft seal..bite the bullet...and purchase a whole NEW replacement pump I am a retired locomotive mechanic...but also moonlighted for the buggest hydraulic distributor in the midwest..and taught hydraulics at a tech college, night school, for 12 yraes.
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Today's Featured Article - Grain Threshing in the Early 40's - by Jerry D. Coleman. How many of you can sit there and say that you have plowed with a mule? Well I would say not many, but maybe a few. This story is about the day my Grandfather Brown (true name) decided along with my parents to purchase a new Ford tractor. It wasn't really new except to us. The year was about 1967 and my father found a good used Ford 601 tractor to use on the farm instead of "Bob", our old mule. Now my grandfather had had this mule since the mid 40's and he was getting some age on him. S
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