1. 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:
Pressure:
157 kPa (1.6 kgf/cm2, 23 psi)
• Each portion of radiator for leakage
• Hose joints and other connections 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.
2. 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. If the valve opened at the service limit or less, replace the radiator cap.
Radiator cap valve open pressure
Specification:
93 — 123 kPa (0.95 — 1.25 kgf/cm2, 14 — 18 psi)
Service limit:
83 kPa (0.85 kgf/cm2, 12 psi)
|
(A) |
Check points for deformation |
|
(B) |
Check points for deformation, damage, rust |
3. 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.
• Gasoline engine model
• Diesel engine model
4. Check the radiator fan operates using Subaru Select Monitor, when the coolant temperature rise to 95°C (203°F) or more. If it does not operate, check the radiator fan system.
• Gasoline engine model
• Diesel engine model