Trailing Valve
- Disconnect the vacuum solenoid sensing tubes from the solenoid valve and vacuum pipe. Blow through the solenoid valve from the vacuum sensing tube "B". Make sure the air passes through the valve and comes out the air filter "C".
- Disconnect the connector from the trailing vacuum control valve and connect battery power to terminals on the valve. Blow through the valve from the vacuum sensing tube "B". Make sure the air passes through the valve and comes out the port "A" of the valve.