bayoublue
Bronze Member
I'm just curious, I've got a tc35d with a 16 la fel...I cannot curl the bucket at the same time moving the bucket up or down..... is this the way others work?
bucket movement
- Thread starter bayoublue
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257NH
Silver Member
You should be able to do both,though one will affect the other somewhat.
daTeacha
Veteran Member
Not necessarily. There was quite a discussion on this a while ago. It depends on your valve. I'm too ignorant about hydraulics to explain it correctly, but some valves prioritize one motion over the other to the extent that you can only do one motion at a time. My LX 114 loader and factory valve won't lift and curl simultaneously, but you get used to the controls and don't notice it too much unless you're watching for it. I think my old B7100 would do both at once, but I was never thinking about those kinds of things then.
Mike058
Gold Member
As I understand it, the valves for lifting and curling are in series (in some set ups). The fluid goes to the lifting circuit first. When that valve's open, the fluid goes to the arms and then back to the tank. There's no fluid available for the curl cylinders while the arms are going up or down. Once the lifting valve is in neutral, fluid is available for the curling cylinders. You could call this a "feature" if you consider all the fluid and pressure is available for the lifting arms. Call it a "bug" if you don't need all that force when you'd rather be able to curl the bucket as it goes up.
jinman
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I used to think that it was not possible to move in both lift and curl at the same time, but that is not the case. It is possible, but the amount of pressure and flow is split between the two functions and it's not a very satisfactory operation. Dumping and lowering the arms at the same time is far easier to accomplish.
Remember, pressure is going to go to the place with the least resistance. If you apply pressure equally from the same source to both curl and lift, which one operates will depend solely on which has the least resistance. If you require 1000 lb of force to lift the arms and it only takes 500 lb of force to curl the bucket, where is the fuid going to go? The arms will sit still and the bucket will curl until it reaches the end of the rods. At that limit, the arms will begin to lift. Fluid always takes the path of least resistance. In a high flow and high pressure system with flow control orifices, you can produce movement in both axes, but on our loaders, the circuits are not isolated to provide this feature.
When you lower the arms and dump the bucket at the same time, you are letting the weight of the bucket and arms aid the hydraulics and it is much easier to produce movement in both the arms and bucket simultaneously.
You can try this experiment with the bucket empty. Lower the arms and curl the empty bucket down. Now, pull the joystick back and to the left at the same time. You should see the bucket curl to maximum and then the arms start to lift. If it doesn't work that way, I'd be very surprised.
Remember, pressure is going to go to the place with the least resistance. If you apply pressure equally from the same source to both curl and lift, which one operates will depend solely on which has the least resistance. If you require 1000 lb of force to lift the arms and it only takes 500 lb of force to curl the bucket, where is the fuid going to go? The arms will sit still and the bucket will curl until it reaches the end of the rods. At that limit, the arms will begin to lift. Fluid always takes the path of least resistance. In a high flow and high pressure system with flow control orifices, you can produce movement in both axes, but on our loaders, the circuits are not isolated to provide this feature.
When you lower the arms and dump the bucket at the same time, you are letting the weight of the bucket and arms aid the hydraulics and it is much easier to produce movement in both the arms and bucket simultaneously.
You can try this experiment with the bucket empty. Lower the arms and curl the empty bucket down. Now, pull the joystick back and to the left at the same time. You should see the bucket curl to maximum and then the arms start to lift. If it doesn't work that way, I'd be very surprised.