Next, here is a closer look at the pump control valve. The bleed screw #18 is circled.
The bleeding procedure is: -
1. Stop the engine. Wiggle all the control levers (lift, tilt, ripper) to release any pressure in the system.
2. Unscrew the bleed screw
3 turns ONLY.
(Will require a metric Allen Key to fit the plug)
3. Start the engine and run at
LOW IDLE ONLY. A small amount of oil may come out of the bleed screw during the procedure.
The following steps may cause the implements to move. Be prepared for that and ensure that people keep well away from them.
4. Move the blade tilt control lever to full tilt in one direction for 5 seconds then return it to neutral.
5. Move the blade tilt control lever to full tilt in the other direction for 5 seconds then return it to neutral.
6. Repeat steps 4 & 5 for the Blade Lift control lever.
7. Repeat Steps 4 & 5 for the Ripper control lever.
8. Close the purge valve before stopping the engine.
NOTE: It is important to perform the procedure in the order of Tilt->Ripper->Lift because it starts at the cover end of the implement control valve and works to the other end. Performing the procedure in any other order is not guaranteed to get all the air out of the implement signal circuit.