Caution: Thoroughly remove moisture from the surface of all parts being tested.
Caution: When removing the tester to check the radiator cap, be careful not to splash coolant.
Attention! When connecting and disconnecting the tester, as well as during the test, be careful not to deform the radiator filler neck.
Caution: If there are coolant leaks, repair or replace the relevant parts.
Fig. 6.1. Checking the radiator cap opening pressure: 1 – Radiator cap adapter
1. Use a special adapter to connect the radiator cap to the tester (Fig. 6.1).
2. Increase the pressure until the pressure gauge needle stops.
- Maximum allowable pressure is 65 kPa.
- Nominal pressure: 75–105 kPa.
3. Replace the radiator cap if the pressure shown on the pressure gauge is below the maximum permissible value.
Caution: Before checking, make sure the radiator cap is clean, as rust or other foreign matter on the cap gasket may cause incorrect pressure gauge readings.