LD1
Epic Contributor
Yes, with lift disconnected and trying to lift anyway.....how fast the thing actually lifts (when trying to lower) is an indication of how much oil is actually leaking past the piston seals.
But still wouldn't cause loader drift. You could completely remove the seals....and the loader would still not drift. Oil actually has to EXIT the cylinder for it to drift down. There is no if's, and's, or but's about that.
The issue oldnslo eluded to is that with bad piston seals.....oil can now seep past the lift..AND lower ports in the valve body itself. Giving the oil double the escape paths.
Fixing the cylinders may help the symptom....but the issue is still oil leaking past the valve.
Manufactures usually rate valve leakage. Since valves are metal on metal, and have to move....they cannot be a 100% seal. 3cc/min of oil at 1000psi is a pretty standard number.
Just how much yours is leaking can be calculated
But still wouldn't cause loader drift. You could completely remove the seals....and the loader would still not drift. Oil actually has to EXIT the cylinder for it to drift down. There is no if's, and's, or but's about that.
The issue oldnslo eluded to is that with bad piston seals.....oil can now seep past the lift..AND lower ports in the valve body itself. Giving the oil double the escape paths.
Fixing the cylinders may help the symptom....but the issue is still oil leaking past the valve.
Manufactures usually rate valve leakage. Since valves are metal on metal, and have to move....they cannot be a 100% seal. 3cc/min of oil at 1000psi is a pretty standard number.
Just how much yours is leaking can be calculated