Cooling System: Testing and Inspection

Cooling System, Checking for Leaks

Special tools, testers and auxiliary items required

• Cooling system tester (V.A.G 1274)

• Adapter (V.A.G 1274/8)

• Adapter (V.A.G 1274/9)

- Screw the cooling system tester (V.A.G 1274) with the adapter (V.A.G 1274/8) onto the reservoir as shown.





- Operate pump and generate a positive pressure of 1.4 to 1.6 bar.

- Check cooling system for leaks.

- Also test the cap:

- To do this, screw the adapter (V.A.G 1274/9) onto the cooling system tester (V.A.G 1274).





- Operate pump and generate a positive pressure of 1.4 to 1.6 bar.

- The pressure relief valve must not open before 1.4 bar.

- If the valve in the cap opens prematurely, replace the cap.