Note: Coolant change operation and filling capacities are given in chapter "Maintenance and general inspection and adjustment procedures".
Checking the tightness of the cooling system
1. Make sure the coolant level reaches the radiator filler neck. Connect a radiator filler cap valve tester and pressurize 160 kPa, then check for coolant leaks from the hose connections or the coolant hoses themselves.
Attention:
- Thoroughly remove moisture from the surface of all tested parts.
- When removing the radiator plug tester from the radiator neck, be careful not to splash (leakage) coolant.
- When connecting and disconnecting the tester, as well as during the test, be careful not to deform the radiator filler neck.
2. If there are coolant leaks, repair or replace the related parts.
Checking the opening pressure of the radiator cap valve
Note: Make sure the radiator cap is clean before checking (free from pollution), as rust or other foreign matter on the cover gasket may cause the pressure gauge to read incorrectly.
1. Use the special adapter to connect the radiator cap to the tester.
2. Increase the pressure until the pressure gauge needle stops.
Rated value - 74 - 103 kPa
Maximum allowable value - 64 kPa
3. Replace the radiator cap if the pressure shown on the pressure gauge is below the maximum allowable value.