Secondary Air Injection Combination Valves, Checking For Function and Leaks

Secondary Air Injection Combination Valves, Checking for Function and Leaks

Test Sequence

- Disconnect pressure hose - 1 - at combination valve for secondary air injection.





• Ignore - arrows -.

Connect an appropriate assisting hose to the combination valve.

- Blow into the assisting hose using light pressure (do not use pressurized air).

• Combination valve must be closed, it must not be possible to blow through.

- Blow into the assisting hose using higher pressure (do not use pressurized air).

• The combination valve must open, it must be possible to blow through.

If the switching point is not recognized:

- Replace combination valve: Left => [ Left Combination Valve for Secondary Air Injection ] Left Combination Valve for Secondary Air Injection, right => [ Right Combination Valve for Secondary Air Injection ] Right Combination Valve for Secondary Air Injection.