Removal and Installation
| WARNING | Do not remove radiator cap when the engine is hot. Serious burns could occur from high-pressure engine coolant escaping from the radiator. Wrap a thick cloth around the cap. Slowly turn it a quarter turn to release built-up pressure. Carefully remove the radiator cap by turning it all the way. |
REMOVAL
- Drain engine coolant from the radiator. Refer to " «CHANGING ENGINE COOLANT»(ref-367308-S12677316052010072700000) ". CAUTION: Perform this step when engine is cold. Do not spill engine coolant on drive belt.
- Remove air duct (inlet). Refer to «AIR CLEANER AND AIR DUCT»(ref-367306-S15222089282010072700000) .
- Disconnect the reservoir tank hose.
- Remove radiator hoses (upper and lower).
- Disconnect harness connectors from fan motors, and position harness aside.
- Remove the cooling fan assembly to radiator bolts and remove cooling fan assembly.
- Remove radiator upper mounts.
- Move the radiator assembly to the rearward direction of vehicle, and then lift it upward to remove. CAUTION: Do not damage or scratch A/C condenser if equipped and radiator core when removing.
INSTALLATION
Installation is in the reverse order of removal.
| CAUTION | Do not damage or scratch A/C condenser if equipped and radiator core when installing. |
| WARNING | Never remove the radiator cap when the engine is hot. Serious burns could occur form high pressure coolant escaping from the radiator. |
- Partially drain engine coolant from radiator. Refer to " «CHANGING ENGINE COOLANT»(ref-367308-S12677316052010072700000) ". CAUTION: Perform this step when engine is cold. Do not spill engine coolant on drive belt.
- Remove air duct (inlet). Refer to «AIR CLEANER AND AIR DUCT»(ref-367306-S15222089282010072700000) .
- Disconnect radiator hose (upper) at radiator side. Refer to «RADIATOR»(ref-367308-S16346757022010072700000) .
- Disconnect harness connectors from fan motor, and position harness aside.
- Remove cooling fan assembly. CAUTION: Be careful not to damage or scratch the radiator core.
Installation is in the reverse order of removal.
- Cooling fans are controlled by ECM. For details, refer to «DTC P1217 ENGINE OVER TEMPERATURE»(ref-367313-S34689687632010072700000) .
| CAUTION | Be careful not to damage or scratch the radiator core. |
Scheme 14
Scheme 14: Disassembly and Assembly
| WARNING | Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure engine coolant escaping from the radiator. |
- Drain engine coolant from the radiator. Refer to " «CHANGING ENGINE COOLANT»(ref-367308-S12677316052010072700000) ". CAUTION: Perform this step when the engine is cold.
- Remove the generator. Refer to " «REMOVAL AND INSTALLATION MR20DE»(ref-367310-S16741457392010072700000) ".
- Remove radiator hose (lower). Refer to " «COMPONENT»(ref-367308-S36236308522010072700000) ".
- Disconnect the CVT fluid cooler hose from the thermostat housing (CVT models).
- Remove water pump. CAUTION: Handle the water pump vane so that it does not contact any other parts. Water pump cannot be disassembled and should be replaced as an assembly.
Scheme 15
Scheme 15: INSPECTION AFTER REMOVAL
- Visually check that there is no significant dirt or rusting on the water pump body and vane (A).
- Make sure that there is no looseness in the vane shaft, and that it turns smoothly when rotated by hand.
- Replace water pump, if necessary.
Installation is in the reverse order of removal.
| WARNING | Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure engine coolant escaping from the radiator. |
| CAUTION | Perform when the engine is cold. |
- Drain engine coolant from the radiator. Refer to " «CHANGING ENGINE COOLANT»(ref-367308-S12677316052010072700000) ".
- Disconnect radiator hose (lower) and remove water inlet.
- Remove thermostat.
- Remove thermostat housing, if necessary.
Scheme 16
Scheme 16: INSPECTION AFTER REMOVAL
- Place a thread (A) so that it is caught in the valves of thermostat (1). Immerse fully in a container (B) filled with water. Heat while stirring.
- The valve opening temperature is the temperature at which the valve opens and the thermostat falls from the thread.
- Continue heating. Check the full-open valve lift amount. NOTE: The full-open valve lift amount standard temperature for the thermostat is the reference value.
- After checking the full-open valve lift amount, lower the water temperature and check the valve closing temperature. THERMOSTAT SPECIFICATION Items Thermostat Valve opening temperature 80.5 - 83.5°C (177 - 182°F) Full-open valve lift amount More than 8 mm/95°C (0.315 in/203°F) Valve closing temperature 77°C (171°F)
- If out of the specification, replace thermostat.
Installation is in the reverse order of removal.
| WARNING | Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure engine coolant escaping from the radiator. |
| CAUTION | Perform when the engine is cold. |
- Drain engine coolant from the radiator. Refer to " «CHANGING ENGINE COOLANT»(ref-367308-S12677316052010072700000) ".
- Remove air cleaner and air duct assembly. Refer to «AIR CLEANER AND AIR DUCT»(ref-367306-S15222089282010072700000) .
- Remove radiator hose (upper). Refer to «RADIATOR»(ref-367308-S16346757022010072700000) .
- Remove heater hoses and water hoses.
- Disconnect engine coolant temperature sensor.
- Remove water outlet.
- Remove water control valve.
- Remove engine coolant temperature sensor, if necessary. CAUTION: Handle carefully to avoid any shock to engine coolant temperature sensor. Replace the gaskets and rubber rings with a new ones.
Installation is in the reverse order of removal.
