Combines header hydraulics creeping down

[slayer]

did you install just the single poppet or the kit

 

[Super]

Yes the seal kit should fix the problem.I know of many 9000's with this problem.The part is ah151400 cost $83.You may want to have somebody that's been these valves do the work,small springsandballs.Good luck

 

[Mic]

The problem is not in the cylinder if the cylinder is not leaking externally. It has to be in the hydraulic system. If a seal inside the cylinder is leaking, the cylinder should not move unless that oil is in turn leaking to the outside of the cylinder. This is a safety feature engineered into all hydraulic cylinders, and why cylinders should push to move a load rather than pull. There is a greater volume of oil behind the piston than in front of it due to the volume taken up by the piston rod. This prohibits a cylinder from failing unless oil leaks to the outside. A dual acting cylinder will fail to retract, however, if the internal seal is bad, as with backhoes, etc... I would guess that the problem is in the control system somewhere.