front bucket dropping overnight

[ovrszd]

If there is no where for the fluid to go then yes it could not collapse. However, if you have a lift cylinder that has bad seals, you can disconnect and cap the pressure side and the load will still fall. As the fluid bypasses the seal it forces fluid back through the valve. This does not prove the valve is out of spec, but proves the seals are bad.

By fixing the cylinder the fluid only has one path back to tank which most of the time is back in spec of the valves performance.

Let's say the valve manufacturer claims a 12 CC per minute leakage rate. If the piston seal is bad, then the rate would be 24 cc per minute. Doesn't take long at that rate for the load to be on the ground.

Is that a fair assumption?

Sorry, it is not.

 

[K5lwq]

I guess my next question would have to be why did we always have success rebuilding the cylinder to correct the issue? And why is Rick able to make his customers happy by rebuilding or replacing the cylinder?

 

[K5lwq]

Nothing to be sorry for, we are just having a discussion.

 

[4570Man]

The loader can drop faster with leaky cylinder seals but it’s NOT the root cause of the problem.

 

[K5lwq]

But why does it drop faster?

 

[4570Man]

Higher pressure in the cylinder and leaking in both sides of the valve.

 

[K5lwq]

That is what I have been saying. Because it leaks on both sides of the valve, the valve can still be in manufacturing specs but the load is falling faster than it would with good seals.

 

[mcfarmall]

It's your tractor telling you to put the bucket on the ground when you aren't using it!

 

[ovrszd]

It's your tractor telling you to put the bucket on the ground when you aren't using it!

Exactly.

 

[mguitas]

if I leave my loader up two feet off the ground, the next day it will still be at the same spot. I guess there not all the same.