Hi All I have added some remote hydraulics to an a25c water cart. The specs say that the hydraulic pressure is 2900psi and I need 2500psi min., so all good. However checked the pump 1 and 2 tests points underneath and I am getting 1500psi. Have read manual and it says pump 1 and 2 should be at 350psi when idling? Also machine is turning or articulating by itself on startup, steering wheel turns unmanned, which is not good, especially when loaded on a truck. The steering is very light when used. I have put new tie rod end on the linkage arm. Should I reduce pump 1 and 2 pressure to 350psi, but where can I get the 2900psi into the water pump line? If anyone can assist me in understanding this it would be appreciated. thanks
after speaking to one of my fitters, he said he can remember you can shim the steering valve slide to stop the self steering, this could also be attributing to the pressure reading you have as it will will be to high depending on how out of alignment the valve slide is.
Here's a question. Was the problem with the steering there before you added the additional water cart hydraulics.?
Thanks, I will check that out.
Yes, problem was there when I got it. Have not got auxillary remotes connected at the moment. thanks
Found it in the manual - Machine wanders/selfsteers Control valve not centred - correctly See checking steering valve neutral position and adjusting steering linkage, section 6 The hydraulic pressure changes on demand , so changes when steering used. Pressures easily changed by little screws on the pumps. The steering valve does not move much at all so yes, "alignment of the valve slide" cheers
Finally made my computer work without sh!ting it's self, the "how to" is attached below
Thanks sf, will lift the floor out, give it a de-grease and pressure wash and see if I can shim that valve in situ. Will also check linkages for slop as it seems quite sensitive to any slack. Not much room in there to move! Much appreciated