Order of execution
1. Attach the radiator cap to the radiator cap tester through the adapter.
2. Increase pressure until cap valve moves.
Petrol engines:
- Main valve opening pressure: 83-110 kPa
- Vacuum valve opening pressure: -7 kPa
Diesel engines:
- Main valve opening pressure: 107.9±14.7 kPa
- Main valve closing pressure: 83.4 kPa
3. Verify that the valve opens and closes within the specified limits.
4. Replace the radiator cap if the valve opens and closes outside the specified limits.
Attention! Before checking, make sure that the cover is clean and free of rust and foreign matter that could interfere with its operation.