caterpillar guy
Well-known Member
Well I am not sure whether it was the tractor or the sprayer yet. I did change to the 856 from the 806 It is working. I did also find out that the valves are supposed to be closed center valves. That is something I didn't know.
This morning I put a gage on the line from the tractor back to the valve block. With the 856 I got the 1800-2000 PSI . So moved the gage to the end of the line where it goes into the cylinder. At an idle I got about the same pressure as the 806 when the idle was raised the pressure came up. I got about the 1800-2000 PSI at the end of the line where the cylinder goes. I went down and sprayed about half of the tank out. I also took a chain to put on the booms so they couldn't sag if the problem arose again.
I still am not sure what the problem is. I guess when I get done spraying or a freak rain day, I will look at the 806 closer. Might even check the flow more too. I suppose the pump could putout pressure and not volume. Thus causing the problem.
I do know with the 856 if you want to move or lift the booms you have to shutoff the pump circuit.
That is what I found out today.
This morning I put a gage on the line from the tractor back to the valve block. With the 856 I got the 1800-2000 PSI . So moved the gage to the end of the line where it goes into the cylinder. At an idle I got about the same pressure as the 806 when the idle was raised the pressure came up. I got about the 1800-2000 PSI at the end of the line where the cylinder goes. I went down and sprayed about half of the tank out. I also took a chain to put on the booms so they couldn't sag if the problem arose again.
I still am not sure what the problem is. I guess when I get done spraying or a freak rain day, I will look at the 806 closer. Might even check the flow more too. I suppose the pump could putout pressure and not volume. Thus causing the problem.
I do know with the 856 if you want to move or lift the booms you have to shutoff the pump circuit.
That is what I found out today.