Why does my bucket not uncurl from the ground?

Why does my bucket not uncurl from the ground?

So there is nothing wrong with the curl cylinders. Any ideas what this could be? The other odd behavior is that the curl circuit will not depressurize. In other words, even if I turn the tractor off, lower the bucket to the ground, and then move the joystick around, the curl circuit remains fully pressurized.

Why does the bucket on my tractor not uncurl?

While using the tractor the other day, I accidentally dug the edge of the bucket into the ground while driving forward at speed. The hit was pretty hard, and my chest slammed into the steering wheel. After that impact, the bucket no longer un-curls. It curls fine.

Why does my bucket not depressurize when I hit the wheel?

This is because it has a piloted check valve in the lift and curl circuits. If you damaged the piloted check valves, that would explain why the rod side of the cylinder will not depressurize. Maybe damage to the spool valve? Did you have your hand on the lever when you hit the wheel?

What causes the uncurl circuit to not depressurize?

If the curl circuit is always pressurized, then the uncurl circuit is going to be fighting the curl circuit. What would cause the curl circuit to not depressurize?

So there is nothing wrong with the curl cylinders. Any ideas what this could be? The other odd behavior is that the curl circuit will not depressurize. In other words, even if I turn the tractor off, lower the bucket to the ground, and then move the joystick around, the curl circuit remains fully pressurized.

While using the tractor the other day, I accidentally dug the edge of the bucket into the ground while driving forward at speed. The hit was pretty hard, and my chest slammed into the steering wheel. After that impact, the bucket no longer un-curls. It curls fine.

This is because it has a piloted check valve in the lift and curl circuits. If you damaged the piloted check valves, that would explain why the rod side of the cylinder will not depressurize. Maybe damage to the spool valve? Did you have your hand on the lever when you hit the wheel?

If the curl circuit is always pressurized, then the uncurl circuit is going to be fighting the curl circuit. What would cause the curl circuit to not depressurize?