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:
Non-turbo model and diesel engine model:
157 kPa (1.6 kgf/cm2, 23 psi)
Gasoline turbo model:
122 kPa (1.2 kgf/cm2, 18 psi)
• Each portion of radiator for leakage
• Hose joints and other connections for leakage
NOTE:
• For turbo model, be sure to install the tester to filler tank side.
• Be particularly careful not to deform the filler neck of radiator when installing, removing or using the tester.
• Non-turbo model and diesel engine model
• Gasoline turbo model
• 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.
• Do not remove the cap on the radiator side. (gasoline turbo model)
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 check.
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
Non-turbo model and diesel engine model
Standard:
93 — 123 kPa (0.95 — 1.25 kgf/cm2, 14 — 18 psi)
Service limit:
83 kPa (0.85 kgf/cm2, 12 psi)
Gasoline turbo model
Filler tank side
Standard:
93 — 123 kPa (0.95 — 1.25 kgf/cm2, 14 — 18 psi)
Service limit:
83 kPa (0.85 kgf/cm2, 12 psi)
Radiator side
Standard:
122 — 152 kPa (1.24 — 1.55 kgf/cm2, 18 — 22 psi)
Service limit:
112 kPa (1.14 kgf/cm2, 16 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.
• Non-turbo model
• Gasoline turbo model
• Diesel engine model
4. 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.
• Non-turbo model
• Gasoline turbo model
• Diesel engine model