Need help diagnosing Super C hydraulic problem

Paul Shuler · Oct 12, 2009

Was useing my old rusty but trusty 52 Super C this weekend and notice the hydraulics worked but had gotten very slow. Next day they wouldn't work a lick. The fast hitch didnt drift down but it wouldnt go up or down. The touch control arms wouldnt work either. My first thought was the pump seal had gone bad and leaked all the fluid into the oil pan. But the touch control is full and the crank case is not over full. How do I determine if it's the pump or a touch control problem? It lifted the front of a trailor with a load of wood pellets on it a week ago and never even grunted. Thank you for any replies,
Paul

ScottyHOMeY · Oct 12, 2009

Pump might be suspect.

What are you using for fluid in the T/C, and are you havin' a cold snap?

Paul Shuler · Oct 12, 2009

It has whatever it had in it a year ago when I bought the tractor. I topped it off last year with a pint or so of standard hydraulic fluid I picked up at Orielys auto parts. It has been cool but we have not dropped below freezing yet. Maybe 38 the other night.

IH fan · Oct 12, 2009

I would suspect either the pump gone bad or the relief valve bad or has some contaminant in it. I don't know where the relief valve is located, but it's going to have one somewhere or something would blow up.

Hugh MacKay · Oct 12, 2009

Paul: Not saying this will help, but my first move would be drain the system, clean the screen and fill with new fluid.

I can a agree with others and thoughts on pump, however the touch control unit can be rendered helpless by minute amounts of dirt. There are some very small passages in there. You may just dislodge that something with the screen cleaning and new fluid. Remember the least cost and labor intensive functions come first. I might not be right, but it's worth a try.

CNKS · Oct 12, 2009

The pump isn't going to go bad all at once. The hyd block shouldn't either, but as Hugh says, one of the passages may be plugged. Try changing the fluid first, and be sure to clean the screen.

IH fan · Oct 12, 2009

Hugh is right... contaminate in the system can be one of the biggest headaches of a hydraulics system. I worked 25 years in the engineering test lab of a hydraulics company and contamination was one of the biggest problems. Even water causes immense problems in the higher pressure systems and can be as harmful as throwing sand in it. At the time I was running Cs and Super Cs, I did not pay much attention to the system other than I knew where the fill cap was. I have no idea where the individual parts might be, but any screen, filters, etc., and clean fluid would be a good place to start. As you drain it, examine the fluid to see if there seem to be particles of metal in it. This would be an indication of excessive wear, and most likely in the pump.

gab · Oct 12, 2009

Does the pump make any sound at all? Mine quit working shortly after I bought it, no sound at all. I did the oil and screen thing, nothing. Took the head off the back, pulled everything out I could and installed new orings, nothing. Took the whole touch control off, rolled it over on the bench to start disassembly and heard a rattle or a jingle. Took a flat plate off the top or bottom, don't remember and out rolls a pipe plug. The hole was only tapped about two threads deep and it blew the plug out after about forty some years and me buying it.
I dought you could have the same problem but if all else fails.

teach · Oct 12, 2009

I had a problem something like that and I had to take the back plate off. There was a small screen in one of the holes that was plugged. I don't remember any more put if you look at a parts book I think you will see it.

Need help diagnosing Super C hydraulic problem

Paul Shuler

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ScottyHOMeY

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Paul Shuler

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IH fan

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Hugh MacKay

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CNKS

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IH fan

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gab

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teach

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