How to test leaking Air start valve?
- Open all the valves for starting main engine except distributor valve.
- Open all units indicator cocks.
- Start the main engine from ECR by moving the telegraph of AHD direction.
- Now the engine wont start , but automatic main air starting valve will open and starting air will be available to all units air start valve.
- If any air start valve leaks , then the air will go to units and comes out from indicator valve.
- For checking this personnel should be employed near all indicator cocks