560 hydraulics

I am wondering if there is any way to make my 560 have more hydraulic pressure. I havent checked it lately but if my memeory is correct it had about 1500 a couple years ago and that isnt quite enough for my swather. Thanks

is the pproblem pressure or flow. you can get a relief valve that is higher or you might have to buy a larger volun=me pump. my 656 had a cracked combining valve . installed a nother one but had rough time getting it set to balance , pressure would drop if not set right good luck

can you put a larger diameter cylinder on the swather?

yes I could put on a larger cylinder but more pressure would be better all the way around. I use the tractor for other things also. And yes I am pretty sure pressure is the problem. Can I make more pressure with the parts in the tractor or does it require new parts? I have restored this tractor so I dont want to change things from original unless I have to but I do use it and low pressure systems dont work very well with newer heavier equipment as all of us know. Thanks for the input and help so far.

Where and what is the combining valve? You had a hard time getting it set, did you have pressure right when the tractor was started but then drop off after a short amount of time?

I would recommend against doing anything to increase the pressure. Remember you're talking about a 50-year-old (on average) tractor that was designed for 1500PSI hydraulics originally. All the hydraulic lines and valves on that tractor are original and have 50 years of fatigue on them. Plus, replacements are difficult to come by when you do blow something.

(quoted from post at 07:11:05 06/04/10) I would recommend against doing anything to increase the pressure. Remember you're talking about a 50-year-old (on average) tractor that was designed for 1500PSI hydraulics originally. All the hydraulic lines and valves on that tractor are original and have 50 years of fatigue on them. Plus, replacements are difficult to come by when you do blow something.

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I'll second what he said... the pump may only be designed for 1500psi. The rest of the system is probably not a problem, but the pump could be. I don't know for sure if we (Cessna) built the pump in the 560... we did for at least some 460s, so I'd bet we did also for the 560. At the time we built those pumps, we "under-rated" them, or tested them at a higher pressure, but since they are probably hard to find these days (Eaton, who bought Cessna, does a very poor job of supporting older components), why take a chance. Another 250 psi might not be enough anyway, and I surely wouldn't go more than that. I know there were two sizes of pumps made for them, but don't recall the displacement. I would also recommend a larger diameter cylinder. I had a friend that bought a really heavy Wilbeck offset disc that his 4640 JD would not lift until I found some NOS parts to build him a 5" limit stop cylinder. We only made a few of those cylinders, but luckily still had parts to build at least one more.
Might also be a good idea to recheck the pressure to be sure it's still high enough and also check it hot to be sure it isn't lower then.

Mic, the 460, 560, 660, 656, 2606 and similar models all pretty much used the same Cessna or Thompson pumps in 12 or 17 gpm. Look at caseih.com and do a search for parts for 560 and look at the hydraulic options.

My 2606 came with same pump and relief valve setup as the other tractors. However the IH 3000 loader comes with an 1800 psi pop off valve to replace the original one. The pumps can for sure handle 1800 and probably 2000 without much of a problem. When I look for similar pumps, 2000 to 2200 seems to be a cutoff for pressure for the common pumps. I wouldn't try going to 2500 or 3000 psi which is the about the minimum norm now for pumps.

Pumps can run $400-600. A new relief valve gets expensive and can be over a hundred bucks. Check the part numbers and call your dealer.

I'm not sure if you gain much for the price but you don't know without trying.

If you look at your relief valve under the rockshaft housing cover under your seat, you will see they screw in and are adjustable. However they are "staked" at the factory with 2 indentions in the threads to keep them from turning by vibration and such. You could try removing the cover and the valve and put it in a vise and try to clean up the stakes. Screw the inside part in part of a turn or so. Put it back in and try it. You can run it with the cover off cause when the relief valve goes, it just bubbles out with not much pressure. Then adjust as wanted.

Don't mess up the gasket on the rockshaft cover when you pull it and you may need to help it with a putty knife in places.

You can up the pressure some but the downside is that the valves and every other hydraulic part has internal check balls/relief valves that may keep you from going very high except I think my 2606 came with a 1200 (or 1500) psi relief valve and the loader got it up to 1800.

With hydraulics, pressure equates to power of a cylinder or motor and gpm volume equates to speed of travel and torque of a cylinder or motor.

What is wrong with the swather? Not enough power to open the cylinder or too slow because of volume versus cylinder size.

Post back with answer and what you do.

when out of set oil will bypass. you have an djustable rod that you can adjust.I put on a used combining valve and it was 1/8th out of adjustment, whenset right both pumps will work as one and oil will not leak into case and you will have pressure without adjustment I had none as was bypassing works good now and have 1500 lbs pressure