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Home >> Lexus >> 2015 >> IS 250 Base, RWD >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System (4GR-FSE) - Service Information >> Thermostat >> Installation [04/2013 - 08/2015] >> Procedure

Installation [04/2013 - 08/2015]: Procedure

  1. INSTALL WATER INLET WITH THERMOSTAT SUB-ASSEMBLY 
    1. Install a new gasket and the water inlet with thermostat sub-assembly with the 3 nuts.

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

  2. CONNECT NO. 6 WATER BY-PASS HOSE 
    1. Connect the No. 6 water by-pass hose to the water inlet and slide the clip to secure it.
  3. CONNECT NO. 2 RADIATOR HOSE 
    1. Connect the No. 2 radiator hose to the water inlet with thermostat sub-assembly and slide the clip to secure it.
  4. INSTALL INLET NO. 1 AIR CLEANER 

    Refer to PROCEDURE - Step 74

  5. ADD ENGINE COOLANT 

    See step  5

  6. INSPECT FOR COOLANT LEAK 

    Refer to PROCEDURE - Step 1

  7. INSTALL CENTER NO. 4 ENGINE UNDER COVER 

    Refer to PROCEDURE - Step 9

  8. INSTALL V-BANK COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 104

  9. INSTALL COOL AIR INTAKE DUCT SEAL 

    Refer to PROCEDURE - Step 3

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