560 hydraulic issue

CenTex Farmall · May 23, 2012

Dad's 560 has a leak down problem in the hydraulic circuit for the F.H. cylinder. With any load on it it will bleed down and then cycle back up. With a heavy load such as a round bale it will cycle about every 10 seconds putting a noticeable load on the pump and engine in the process. Very annoying and puts a lot of heat in the hydraulic fluid.

It seems like it would simply be leakage in the cylinder itself, but could it possibly be in the spool valve? If the spool valve is not likely we'll go ahead with plans to rebuild the cylinder.

mkirsch · May 23, 2012

If the tractor has its original Tel-a-depth system, the valve for the fast hitch isn't a simple spool valve. There's a whole system of linkages and gears so the hitch can "tell" the valve what position it's in.

From what little I know and have read about it, you are much better off messing with the cylinder to see if that fixes the problem.

pete 23 · May 23, 2012

Most likely problem by far is a bad o-ring in the check valve located in the rear of seat. The teledepth valve itself is not fitted close enough to hold a load that is why they use check valves on all fast hitch tractors. Early models had single one hose check valve, later ones had double so it will hold cyl in both directions like lifting the rear of tractor. Could be cyl but I doubt that. Easy to tell, with load lifted, engine off, remove hose that is not supporting load at the check valve,and if fluid comes out of hose, cyl leaking, fluid coming out of port hose taken out of at check valve, then check valve is leaking.

560 hydraulic issue

CenTex Farmall

Well-known Member

mkirsch

Well-known Member

pete 23

Well-known Member

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