lexus Workshop Repair Guides

Lexus Workshop Service and Repair Manuals

Thermostat, Engine Cooling|Specifications|Page 3051 > < Thermostat, Engine Cooling|Specifications|Page 3049
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2. REMOVE ENGINE UNDER COVER
3. REMOVE COOL AIR INTAKE DUCT SEAL
4. REMOVE NO. 1 AIR CLEANER INLET
5. DRAIN ENGINE COOLANT
6. REMOVE V-BANK COVER SUB-ASSEMBLY
7. DISCONNECT RADIATOR HOSE OUTLET

8. REMOVE WATER INLET SUB-ASSEMBLY WITH THERMOSTAT

(a)

Remove the 3 nuts, water inlet with thermostat and gasket.

INSPECTION

1. INSPECT WATER INLET SUB-ASSEMBLY WITH THERMOSTAT

HINT:  The water inlet with thermostat is stamped with the valve opening temperature.

(a)

Immerse the water inlet with thermostat in water and gradually heat the water.

(b) Check the valve opening temperature.

Standard valve opening temperature: 80 to 84°C (176 to 183°F)
If the valve opening temperature is not within the specified range, replace the water inlet subassembly with thermostat.

Thermostat, Engine Cooling|Specifications|Page 3051 > < Thermostat, Engine Cooling|Specifications|Page 3049