Cooling System: Inspection
- To check the radiator for leakage, fill it with engine coolant, and attach the radiator cap tester (A) to the filler neck, and apply pressure. Check the following points:
157 kPa (1.6 kg/cm 2 , 23 psi)
- Hose joints and other connections for leakage
- Each portion of radiator for leakage
NOTE:- Be particularly careful not to deform the filler neck of radiator when installing and removing the tester and after testing.
- When performing this check, be sure to keep the engine stationary and fill radiator with coolant.
- Wipe off check points before applying pressure.
- Be careful not to spill coolant when detaching tester from radiator.
- Check the radiator cap valve open pressure using radiator cap tester.NOTE: Rust or dirt on the cap may prevent valve from functioning normally. be sure to clean the cap before testing.
Raise the pressure until the needle of gauge stops and see if the pressure can be retained for five to six seconds. The radiator cap is normal if a pressure above the limit value has been maintained for this period. Replace the radiator cap if its valve opens at less than the service limit.
Radiator cap valve open pressure
Standard:
73.6 - 103 kPa (0.8 - 1.1 kg/cm 2 , 11 - 15 psi)
Service limit:
63.6 kPa (0.6 kg/cm 2 , 9.2 psi)
- Start the engine, and then inspect that it does not overheat or it is not cooled excessively. If it overheats or it is cooled excessively, check the cooling system. Refer to WATER PUMP Water Pump. Refer to THERMOSTAT Thermostat. Refer to RADIATOR Radiator. Refer to RADIATOR CAP Radiator Cap.
- Check the radiator fan operates using Subaru Select Monitor, when the coolant temperature exceeds 95°C (203°F). If it does not operate, check the radiator fan system. Refer to RADIATOR FAN SYSTEM INSPECTION, Radiator Fan System.