Terramite hydraulic bleed off.

[kdhawk200]

I am having bleed off problems with my terramite. I changed a lot of the cylinders out and still have the problem. All of the functions have some sort of bleed off. I changed the loader bucket tilt cylinder and also changed out the backhoe cylinders. I have some small leak on the loader lift cylinders which I haven't changed yet. I changed the outrigger cylinders and hose, and they bleed off rather quickly. I am thinking of changing out the Loader and backhoe control valves. This would be very expensive. I hate to do this and it not fix the problem. I checked for leaks at the pump and all over.
Any help would be appreciated.

 

[J_J]

If all valves are in neutral, and you have leak down, it is either worn seals or worn spools, as the pump is not in the circuit.

Are you changing out cyl in pairs?

If you know your cyl are good, then the only other problem, is a worn spool in the valve.

You could switch hoses to other spools and recheck the drift down.

If you have cyl relief valves, they could be leaking.

Old thin fluid could be a problem.