M35x AWD V6-3.5L (VQ35DE) (2007)
Thermostat: Service and Repair
WATER INLET AND THERMOSTAT ASSEMBLY
Exploded View CO-29
Removal and Installation
REMOVAL
1. Remove engine room cover (RH and LH).
2. Remove air duct (inlet).
3. Remove front engine undercover using power tool.
4. Drain engine coolant from radiator drain plug at the bottom of radiator, and from water drain plug at the front of cylinder block.
CAUTION:
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Perform this step when the engine is cold.
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Do not spill engine coolant on drive belts.
5. Disconnect radiator hose (lower) and oil cooler water hose from water inlet and thermostat assembly.
6. Remove water inlet and thermostat assembly.
CAUTION: Do not disassemble water inlet and thermostat assembly. Replace them as a unit, if necessary.
INSPECTION AFTER REMOVAL
1. Check valve seating condition at ordinary room temperatures. It should seat tightly.