hydro pump mystery

The illustration in my shop manual shows a big seal for the early pumps and an o-ring for the later pumps. I think that's probably what was used on your pump. Hal

Fax # 775-860-4015

Before you answer, read what I said to fenton.

Two days ago when I said I never had one of these pumps apart, that is precisely what I meant. That didn't mean I've never had a hydraulic pump apart. They all have one thing in common, that being a driving shaft, and along that driving shaft is the only way hydraulic oil can leak into the crankcase, in this application. In all your communication you speak of gears, but you never identify whether they are oil pumping gears or driving gears. Until you do that no one can help you. By the way the pump in my IT manual is a Pesco pump. It states some tractors are equiped with a Thompson pump.

If indeed fenton has a pump with no seal in that output shaft, he may as well toss it on the scrap pile and find another pump. The other item I notice, you are spelling it Pesko and my IT manual is saying Pesco.

Another interesting item, it is now 47 years since my dad bought the 130. Over the 47 years I've owned 6 of these tractors, and I've yet to take a hydraulic pump or touch control unit apart. I've removed the pumps a few times doing other work on tractor. We learned very early on Farmalls one fault on hydraulics was much too small resovoirs. Even the slightest leak had to be dealt with quickly, or you ran the danger of system running dry. Hydraulic pumps will operate without oil just about the same length of time the engine crankcase will run without oil.

I guess the hard lesson we had was with Cockshutt 540 and Wagner loader with a front mounted pump, having the high presure line runing along loader frame to valves. Wagner also used the tubular sub frame as a resovoir My kid brother sheared that high presure line loading gravel. Of course he lost all the hydraulic oil in about 30 seconds. Since loader was in raised position, he thought it would be ok to drive the 1/2 mile back to farm. When he got there you could have cooked dinner on that pump. Expensive lesson even back in 1961. Dad brought in a new set of rules, if in doubt with oils, "SHUT IT DOWN". That is when we noted the Farmall 130 held 8 pints and 300 very little more. Even the Cockshutt, the onboard system for 3 point hitch held very little more. The loader did hold about 12 to 15 gallons. Dad's next new rule was every time you check the engine crancase oil (daily) you also check the hydraulic oil level as well as rad. That rule has served me well.

I know this is a bit long winded, however I've felt for sometime, most of these rebuilds on touch control systems, both pump and touch control unit we read about here at YT could have been avoided had closer attention been given the system. That little pump out of oil for 30 sec. will be toast. I think touch control units have been adversely affected by sitting around low in oil thus allowing rubber and leather to dry out. Now I realize when you buy a used tractor, you have little control over what previous owner did.

By the way Peabody this little lecture was not for you. I think we are however seeing an unprecedented number of guys with relatively little experience buying these old tractors, many of them to basically do yard work on and under 5 acre property. When I say little experience, I bet most of them had some at grandpa's farm 30 years ago. That is why they are seeing these oldies as a much better buy than what's new on the market. I feel that the old hands here at YT should not only tell these guys how to fix or repair your own, the time is here to tell them how to avoid some of these problems.