Hello...I have a KB2475 and cannot connect hydraulic lines to 2610 tractor. Backhow legs left down and I think that is the issue. Is there way to release that hydralic pressure on the backhoe? thanks

SOURCE: system creeps down even when tractor is operating.

There are 2 potential problems -
1. Leaking spool on the control valve - rebuild the vale.

2. Cylinder blow-by. Disassemble piston and replace the seals.

To test if its the cylinder - retract the cylinders all the way... remove the hoses on the blind end (non rod end) of each cylinder, and again pull the valve to the retract position.

If fluid continues to pour out of the cylinder - the piston seal is damaged, and the affected cylinder must be repaired.

To test if the valve spool is faulty - disconnect the a and b ports just after the valve. Turn on the system and check for seepage from the disconnected lines (without moving the lever).

Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

SOURCE: I just purchased a 2440 john deere tractor it was

would say that your variable displacement pump has rust or other on/inside, it.

Are you using hydralic fluid (not eng oil) in her?
Can you let it run on blocks for a bit - drain and re-fill transmission?

SOURCE: my father in law has a 1980 410d john deere

did they rebuild the hydralic pump and if so they need to do it again and check the valves in it

SOURCE: 1967 case 990 tractor. My hydraulics raise but I

On the right hand side of the axle on top is a cover with 2 slotted bolts holding it on. Pull this and you will see additional linkage, and a heavy cable which conrols the rockshaft. There should also be 2 valves under this cover. Pull the valves out, inspect for damage, clean them up real good and reinstall. If it continues to leak off at the rockshaft with hand pressure, Then readjust the linkages. NOTE: There are 7 adjustments to the linkage to get this to operate properly, each adjustment affects the sensitivity of the rockshaft and need to be done in sequence. Yours is a David Brown 990 tractor. Your Case dealership will have the manuals for the adjustment procedure. If after adjustment, it continues to leak off, you will need to pull the rockshaft cylinder inside the axle and have it rebuilt.

SOURCE: where do fill up hydraulic fluid on a 1490 case

backend by the linkage someware, sory but dont know what oil to use