back to my hydraulic pump issue...

Anonymous-0 · Feb 22, 2011

Thanks for the tips folks. Been looking at the sites some of you recommended. Things aren't so bad as they seemed up front. There are 4 parts clerks at the local dealer, all are good at their job but 2 go out of their way. Anyway, ran in to the better of the two yesterday and he told me to stop by today. The 1st one I dealt with took advantage of the language barrier and the fact that he thought I was in a bind and had me believing that there were actually two completely different pumps and the one I found on the web wasn't one of them (even though my parts manual says that is the only one). Anyway, I went today to find out that their was only one pump with an older and newer version that required different gears because of shaft diameter. Still close to 800 bucks, but he gave me a 3 buck seal that the other guy said wasn't available and said that if the seal didn't fix the problem, the 200 buck pump I found on the net would work as long as I ordered the gear for it too. On another note, I made the levels right last week and there has been hardly any leaking yet. Will try the seal when it warms up.

Dave

Anonymous-0 · Feb 22, 2011

have same deal at my part store ,but owner likes Me and went to school with his top man.they tell Me when their parts are junk that I don't want that part beefor I buy it. rest of the guys don't have a clue.

greygoat · Feb 22, 2011

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.

Anonymous-0 · Feb 22, 2011

(quoted from post at 06:52:26 02/22/11) 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.

Pretty much what the guy that gave me the seal said. Guess I'll just get the new pump and gear then. Tractor is 47 years old and the pump is the original.

Thanks.

Dave

back to my hydraulic pump issue...

Anonymous-0

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Anonymous-0

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greygoat

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Anonymous-0

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