hello , im new to this site. i have a lull 844c-42 that is giving me problems.serial ending in 1461 i have all functions except frame tilt. seems to be no pressure on the valve at all. ive pretty much checked all valves lines and they seem to be working. i also notice the pump will cut in and out while it is at idle ,cuts in at 1100 psi and cuts out at 2000 psi. when the pump cuts out all up functions stop but down still works. does anyone know what this problem is or where to start looking to trouble shoot this.. thanks, brain
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