Working on a truck which the hydraulic steering isn't working but lift/tilt work. With the rear end off the ground the wheels turn, but still with difficulty.
With the key in the in position the hydraulic pump spins constantly but doesn't ramp up when the wheel is turned. Checked fuses, good. Swapped out the sensor on the column above the orbital, no change.
Any info on what to check from here would be GREATLY appreciated.