Radiator: Testing and Inspection
CHECKING / CLEANING RADIATORCheck radiator for mud or clogging. If necessary, clean radiator as follows.
Be careful not to bend or damage the radiator fins.
When radiator is cleaned without removal, remove all surrounding parts such as cooling fan, radiator shroud and horns. Then tape the harness and electrical connectors to prevent water from entering.
1. Apply water by hose to the back side of the radiator core vertically downward.
2. Apply water again to all radiator core surface once per minute.
3. Stop washing if any stains no longer flow out from the radiator.
4. Blow air into the back side of radiator core vertically downward.
Use compressed air lower than 490 kPa (5 kg/cm2, 71 psi) and keep distance more than 30 cm (11.8 inch).
5. Blow air again into all the radiator core surfaces once per minute until no water sprays out.
LEAK (Pressure) CHECK
To check for leaks, apply pressure to the cooling system with the tester.
Testing pressure......................157 kPa (1.6 kg/cm2, 23 psi)
CAUTION: Higher test pressure than specified may cause radiator damage.
WARNING: Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure coolant escaping from the radiator.