One Way Self-Level Valve

The self-level valve maintains bucket angle from ground level as the loader is raised. It routes return oil from the rod end of lift cylinders to head end of bucket cylinders during the raise cycle. The valve DOES NOT level the bucket when lowering the loader.

The valve will keep the bucket approximately level from ground to tractor hood height. Due to loader geometry and available oil flow, the valve may not accurately level above tractor hood height.

Expected Variations in Leveling
Ground to Full Lift Height
Loader Model Expected Roll Back
Angle Variation
520
(Lift cylinder in lower position on loader mast)		 15°
540 10°

 

Lower loads slowly. The self-level valve uses oil supplied from the rod end of the lift cylinders to level the bucket. Lowering the loader quickly with a load may void or "cavitate" the rod end of the lift cylinders. During the next raise cycle there may not be enough oil supplied for leveling the bucket.

Adjustment screw (A) controls amount of oil directed to bucket cylinders for self-leveling.

To adjust amount of self-leveling, loosen jam nut and use a hex key to turn adjustment screw (A):

  • If bucket dumps while raising loader, turn screw in to decrease flow through valve.
  • If bucket rolls back while raising, turn screw out to increase flow through valve.
W00261

AG,WX20570,112 -19-01JUL98-1/1