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Home >> Lexus >> 2021 >> ES 250 Luxury >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System (A25A-FKS) - Service Information >> Thermostat >> Installation [08/2020 - ] >> Procedure

Installation [08/2020 - ]: Procedure

  1. INSTALL WATER INLET WITH THERMOSTAT SUB-ASSEMBLY 
    1. Install a new gasket to the water inlet with thermostat sub-assembly.

      HINT: 

      Be sure to clean the contact surfaces.

    2. Using an 8 mm socket wrench, install the water inlet with thermostat sub-assembly with the 2 bolts.

      Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

    3. Connect the No. 7 water by-pass hose to the water inlet with thermostat sub-assembly and slide the clip to secure it.
    4. Connect the water inlet with thermostat sub-assembly connector.
  2. CONNECT NO. 2 RADIATOR HOSE 

    Refer to PROCEDURE - Step 35 [08/2020 - 08/2021] , or refer to PROCEDURE - Step 36 [08/2021 - ]

  3. INSTALL GENERATOR ASSEMBLY 

    Refer to INSTALLATION [08/2020 - ]

  4. ADD ENGINE COOLANT 

    Refer to PROCEDURE - Step 2

  5. INSPECT FOR COOLANT LEAK 

    Refer to PROCEDURE - Step 1

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