I think what you’ll find is that the lift action will drastically slow down when you have the curl function fully open, or vice versa. If the curl function stalls (bypasses), then the lift won’t have any pressure to work with to prevent flipping the tractor forward or breaking the boom, and may actually drift down. It’s a lot easier to hurt the loader going up than going down. The lift cylinder has nearly double the force when lifting than it does lowering. When lowering, the cross section area of the rod (Nearly half the total cross section of the cylinder) subtracts from the total available force, and all you can do is push the front of the tractor up a little bit. If you’re raising a load, your center of gravity is chasing the position of the load, and quickly making the tractor unstable. The lifting has to be restricted to the mechanical strength of the boom, and curling while lifting can exceed that rating. Also consider how much more upward travel lifting has versus lowering, I think you’ll come to a very quick decision about how dangerous that can get in very short order if the combination of the curl and lift are not limited enough to avoid lifting the back of the tractor. Most of the restrictions we run into on the smaller tractor frames are safety measures dictated to keep us from killing ourselves. The valve is designed with those restrictions in mind. You’ll find that one motion or the other stops or significantly slows down when you engage the lower left quadrant of the stick travel. That’s by design and keeps ambulance chasers away from Kubota. If you are indeed curling up while raising the bucket, then something isn’t working the way it was designed. I didn’t say right, I said the way it was designed. “Right” is however you want your tractor and equipment to work. Mechanically, as designed, the lever cannot be pulled diagonally left and down to engage both lift and curl at the same time. OM for the FEL says so.
