Search results

H is 24V, R goes to the control solenoid, so you need to insert a jumper from R to H to close the control solenoid B is the supply solenoid. Once the control solenoid jumper is in place/solenoid closed, you will need to jumper H to B briefly and give a 1-2 second shot of supply air to...

You probably still have a leak somewhere. The controller closes the control solenoid and gives a shot of air from the supply solenoid on the PCU to open the dump and wheel valves to the PCU. Then it looks for a stable pressure reading on the pressure sensor on the PCU. If that reading is not...

That is a 7-8 PSI relief valve. The PCU uses it as a pressure regulator to drop the air in the system low enough that the dump valves on the frame open to release tire air to the atmosphere. The deflate solenoid opens the manifold to that relief which vents the manifold pressure down to 7-8 ish...