i bought this excavator the hydraulic pump is stuck in high flow only, wont dig at all engine will stall. cant seam to find this codes in the manual it is missing the throttle controller computer you can change or select different settings on the display ( nothing happens just the lights will change) pump controller showing 52. E5. 55. (pc300, pc360, pc400 serial number 00750) vin number is a30001+
Good day Please see attched hope it helps out. Kind regards Uffex
In the back of the right side console under the glove box are two toggle switches. One of them is the computer bypass. Throw both switches the other way and see if that changes anything. If not it likely means that you have no current going to the TVC solenoid on the pump or the solenoid itself is no good. The video link below shows how the computers display. The next link shows adjusting the pumps. You can adjust the pumps and leave the computers out but it takes some knowledge of how the system works. Good Luck