WATER PUMP INSTALLATION


  1. INSTALL WATER PUMP


    1. A01619IE01

      Install the water pump and a new gasket with the 9 bolts as shown in the illustration.

      Torque:
      20 N*m  { 204 kgf*cm, 15 ft.*lbf, for bolt A }
      23 N*m  { 235 kgf*cm, 17 ft.*lbf, for bolt B }
      47 N*m  { 479 kgf*cm, 35 ft.*lbf, for bolt C }

  2. INSTALL WATER PUMP PULLEY


    1. A0160TUE01

      Temporarily install the pulley with the 4 bolts.

    2. Using a screwdriver or an equivalent, hold the pulley and tighten the 4 bolts.

      Torque:
      21 N*m  { 214 kgf*cm, 15 ft.*lbf }

      Tech Tips

      Tape the screwdriver tip before use to avoid damage.

  3. INSTALL WATER INLET HOUSING


    1. A0162EY

      Install a new gasket to the water pump.

    2. Install the water inlet housing with the 3 bolts.

      Torque:
      21 N*m  { 214 kgf*cm, 15 ft.*lbf }

  4. CONNECT NO. 3 WATER BY-PASS HOSE


    1. A0162Y5E03

      Connect the No. 3 water by-pass hose to the water inlet housing.

      Tech Tips

      The direction of the hose clamp is indicated in the illustration.

  5. CONNECT WATER INLET HOSE


    1. A0160CTE02

      Connect the water inlet hose to the water inlet housing.

      Tech Tips

      The direction of the hose clamp is indicated in the illustration.

  6. CONNECT NO. 5 WATER BY-PASS HOSE


    1. A016102E02

      Connect the No. 5 water by-pass hose to the water inlet housing.

      Tech Tips

      The direction of the hose clamp is indicated in the illustration.

  7. CONNECT NO. 2 RADIATOR HOSE


    1. A0161KB

      Connect the No. 2 radiator hose to the water inlet housing.

  8. INSTALL V-RIBBED BELT


    1. A01609IE02

      Install the V-ribbed belt as shown in the illustration.

    2. Rotate the V-ribbed belt tensioner pulley counterclockwise, and then remove the bar.

      Note

      Check that the drive belt is properly set to each pulley.

    3. A015Z08E03

      Check that the belt is properly positioned on each pulley.

    4. Start the engine and check that the belt turns smoothly and no abnormal noise occurs.

  9. INSTALL RADIATOR RESERVE TANK ASSEMBLY


    1. A0162PT

      Install the radiator reserve tank assembly with the 2 bolts and 2 reserve tank hoses.

      Torque:
      5.0 N*m  { 51 kgf*cm, 44 in.*lbf }

  10. INSTALL AIR CLEANER CAP SUB-ASSEMBLY


    1. A015YT4

      Install the air cleaner cap sub-assembly with air cleaner hose and lock the 2 clamps.

      Tech Tips

      Tightening torque for the hose clamp located between the air cleaner cap sub-assembly and air cleaner hose assembly is as follows.

      Torque:
      4.0 N*m  { 41 kgf*cm, 35 in.*lbf }
    2. A015ZWF

      Connect the air cleaner hose to the throttle body with the hose clamp.

      Torque:
      4.0 N*m  { 41 kgf*cm, 35 in.*lbf }
    3. A015YRW

      Connect the 2 ventilation hoses with the 2 hose clamps.

    4. A01622I

      Connect the mass air flow meter connector and wire harness clamp.

  11. ADD ENGINE COOLANT

    Note

    Before adding coolant, turn the A/C switch OFF.

    Total capacity
    11.9 liters (12.6 US qts, 10.5 Imp. qts)

    1. Tighten the radiator drain cock plug by hand.

    2. Tighten the 2 cylinder block drain cock plugs.

      Torque:
      13 N*m  { 133 kgf*cm, 10 ft.*lbf }

    3. Add TOYOTA Super Long Life Coolant (SLLC) into the radiator reservoir.

      Capacity
      Approximately 5.0 liters (5.3 US qts, 4.4 Imp. qts)

      Tech Tips


      • LEXUS vehicles are filled with TOYOTA SLLC at the factory. In order to avoid damage to the engine cooling system and other technical problems, only use TOYOTA SLLC or similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, non-borate coolant with long-life hybrid organic acid technology (coolant with long-life hybrid organic acid technology consists of a combination of low phosphates and organic acids).

      • Contact any authorized LEXUS dealer or repairer or another duly qualified and equipped professional for further details.

      • Thermostat opening timing can be confirmed by squeezing the inlet radiator hose and sensing vibrations when the coolant starts to flow inside the hose.

    4. A015YN3

      Further add coolant into the reservoir until it reaches the FULL line.

    5. Squeeze the No. 1 and No. 2 radiator hoses several times, and then check the coolant level.

      If the coolant level is low, add coolant.

    6. A0161WSE01

      Using a 6 mm socket hexagon wrench, install the vent plug.

      Torque:
      1.5 N*m  { 15 kgf*cm, 13 in.*lbf }

    7. Bleed air from the cooling system.

      Note

      Before starting the engine, turn the A/C switch off.


      1. While idling the engine for approximately 10 minutes, make sure that the coolant remains at the FULL line by adding coolant as necessary.

      2. A0160C3E01

        After idling the engine for 10 minutes, add coolant to the level shown in the illustration.

        Capacity
        Approximately 2.5 to 3.5 liters (2.6 to 3.7 US qts, 2.2 to 3.1 Imp.qts)

      3. Close the radiator reservoir cap, and run the engine at 1500 to 2000 rpm for 5 minutes.

        Tech Tips

        Thermostat opening timing can be confirmed by squeezing the No. 1 radiator hose and sensing vibrations when the SLLC starts to flow inside the hose.

        CAUTION:

        When squeezing the radiator hose:


        • Wear protective gloves.

        • Be careful as the radiator hose is hot.

        • Keep your hands away from the radiator fan.

    8. Stop the engine and wait until the coolant cools down to ambient temperature.

      CAUTION:

      Do not remove the radiator reservoir cap while the engine and radiator are still hot. Pressurized, hot coolant and steam may be released and cause serious burns.

    9. A015YN3

      Check the coolant level.

      If the coolant level is below the FULL line, add coolant until it reaches the FULL line.

  12. INSPECT FOR COOLANT LEAK

    Note

    Before performing each inspection, turn the A/C switch OFF.

    CAUTION:

    Do not remove the radiator reservoir cap while the engine and radiator are still hot. Pressurized, hot engine coolant and steam may be released and cause serious burns.


    1. A016221

      Fill the radiator with coolant and attach a radiator cap tester.

    2. Warm up the engine.

    3. Using the radiator cap tester, increase the pressure inside the radiator to 118 kPa (1.2 kgf/cm2, 17 psi), and check that the pressure does not drop.

      If the pressure drops, check the hoses, radiator and water pump for leaks. If no external leaks are found, check the heater core, cylinder block and head.

  13. INSTALL ENGINE ROOM SIDE COVER RH (for LHD)


    1. A0161AL

      Install the engine room side cover RH with the 3 clips.

  14. INSTALL ENGINE ROOM SIDE COVER RH (for RHD)


    1. A015YK3

      Install the engine room side cover RH with the 4 clips.

  15. INSTALL NO. 1 AIR CLEANER INLET


    1. A01612G

      Install the No. 1 air cleaner inlet with the bolt and clip.

      Torque:
      5.0 N*m  { 51 kgf*cm, 44 in.*lbf }

  16. INSTALL COOL AIR INTAKE DUCT SEAL


    1. A015ZFO

      Install the cool air intake duct seal with the 9 clips.

  17. INSTALL V-BANK COVER SUB-ASSEMBLY


    1. A0160IP

      Engage the 4 clips to install the V-bank cover sub-assembly.

      Note


      • Be sure to engage the clips securely.

      • Do not apply excessive force or hit the cover to engage the clips. This may cause the cover to break.

  18. INSTALL ENGINE UNDER COVER