300 row crop hyd problem

Thanks , Carl I've looked thru some of the past posts and this forum looks great !

The valves are all stacked together up underneath the instrument panel on a 300, with a common central pressure line running through them all. If sufficient pressure is getting there to operate the bucket and the hitch normally, then sufficient pressure MUST be getting to the valve that lifts the loader arms. Any "loss of power," whatever that means, has to be internal to the valve that lifts the loader arms, or slop in the linkage that runs from the control lever to the valve.

Take the hood cowling off from in front of the instrument panel and look in there while you operate the levers. You should see an obvious difference in the movement of the three valve linkages, which will indicate slop in the linkages.

If they all appear to move equally, then there is a blockage inside the valve itself. This will require some surgery to remove and repair.

Do you have quick couplers on hoses going to loader lift cylinders? I've seen quick couplers cause a remote valve to be slow and weak as well.

If your loader stays up overnight, it can't be bypassing within the cylinders.

Thanks for your help .

The only other thing I can think of would be a blockage in the hoses going to the cylinders, and that can happen if the inside layer peels off a hose, then plugs in a port or fitting. I would explore those two first, for two reasons: First it is the easy fix, and secondly internal problems within that valve bank would probably affect all valves. If you have to remove those valves, it's not a picnic, just about impossible to do without removing the fuel tank.