Engine Cooling System: Maintenance Infiniti FX35 I

Flushing Cooling System

1. Fill radiator with water until water spills from the air relief hole, then close air relief plug. Fill radiator and reservoir tank with water and reinstall radiator cap.
2. Run engine and warm it up to normal operating temperature.
3. Rev engine two or three times under no-load.
4. Stop engine and wait until it cools down.
5. Drain water from the system. Refer to «DRAINING ENGINE COOLANT»(ref-172368-S07276578412005022400000) .
6. Repeat steps 1 - 5 until clear water begins to drain from radiator.

Scheme 24

Scheme 25

Scheme 26

1. Remove front engine undercover with power tool.
2. Drain engine coolant from radiator. Refer to «CHANGING ENGINE COOLANT»(ref-172368-S19622047562005022400000) . NOTE: Perform when engine is cold.
3. Remove air duct and air cleaner case assembly. Refer to «AIR CLEANER AND AIR DUCT»(ref-158850-S12244247462005020300000) .
4. Remove reservoir tank and reservoir tank bracket.
5. Disconnect A/T fluid cooler hoses from radiator. Install blind plug to avoid leakage of A/T fluid.
6. Disconnect radiator upper and lower hoses from radiator.
7. Remove radiator cooling fan assembly. Refer to «COOLING FAN»(ref-172368-S25048391492005022400000) .
8. Rotate two radiator upper mount brackets 90 degrees in the direction shown in the figure, and remove them.
9. Lift up and remove radiator. CAUTION: Do not damage or scratch air conditioner condenser and radiator core when removing.