Water Pump Installation

Engine. Lexus Gs430, Gs300. Uzs190 Grs190
3Uz-Fe Cooling. Lexus Gs430, Gs300. Uzs190 Grs190

  1. CLEAN WATER PUMP ASSEMBLY

  2. INSTALL WATER PUMP ASSEMBLY

  3. INSTALL NO. 2 TIMING BELT IDLER SUB-ASSEMBLY

  4. INSTALL WATER INLET HOUSING

  5. INSTALL TIMING BELT

  6. INSTALL NO. 1 CRANKSHAFT POSITION SENSOR PLATE

  7. INSTALL TIMING GEAR COVER SPACER

  8. INSTALL NO. 1 TIMING BELT COVER

  9. INSTALL NO. 2 TIMING BELT COVER SUB-ASSEMBLY

  10. INSTALL IDLER PULLEY ASSEMBLY

  11. INSTALL NO. 3 TIMING BELT COVER SUB-ASSEMBLY RH

  12. INSTALL NO. 3 TIMING BELT COVER SUB-ASSEMBLY LH

  13. CONNECT OIL COOLER PIPE

  14. INSTALL CRANKSHAFT DAMPER SUB-ASSEMBLY

  15. INSTALL NO. 2 IDLER PULLEY SUB-ASSEMBLY

  16. INSTALL V-RIBBED BELT TENSIONER ASSEMBLY

  17. INSTALL COMPRESSOR ASSEMBLY

  18. INSTALL GENERATOR ASSEMBLY

  19. INSTALL V-RIBBED BELT

  20. INSTALL RADIATOR ASSEMBLY

  21. INSTALL UPPER RADIATOR SUPPORT SUB-ASSEMBLY

  22. INSTALL HOOD LOCK ASSEMBLY

  23. INSTALL HOOD LOCK CONTROL CABLE COVER

  24. INSTALL RADIATOR SUPPORT OPENING COVER

  25. INSTALL FRONT BUMPER COVER

  26. DISCONNECT NO. 1 OIL COOLER OUTLET TUBE

  27. DISCONNECT NO. 1 OIL COOLER INLET TUBE

  28. CONNECT RADIATOR HOSE OUTLET

  29. CONNECT RADIATOR HOSE INLET

  30. ADD ENGINE COOLANT

  31. CHECK FOR ENGINE COOLANT LEAKS

  32. INSTALL AIR CLEANER ASSEMBLY

  33. INSTALL NO. 1 AIR CLEANER INLET

  34. INSTALL ENGINE ROOM SIDE COVER LH

  35. INSTALL ENGINE ROOM SIDE COVER RH

  36. INSTALL COOL AIR INTAKE DUCT SEAL

  37. INSTALL V-BANK COVER SUB-ASSEMBLY

  38. INSTALL ENGINE UNDER COVER

  39. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL

  40. PERFORM INITIALIZATION

Water Pump -- Installation



1. CLEAN WATER PUMP ASSEMBLY


2. INSTALL WATER PUMP ASSEMBLY


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Install a new O-ring to the water by-pass hose.



    Lexus Gs430, Gs300. Uzs190 Grs190
    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Install a new gasket and the water pump with the 5 bolts, 2 stud bolts and nut.

    Torque:
    21 N*m{214 kgf*cm, 15 ft.*lbf} for bolts
    18 N*m{194 kgf*cm, 24 ft.*lbf} for nuts and stud bolts


3. INSTALL NO. 2 TIMING BELT IDLER SUB-ASSEMBLY


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Install the pulley with the bolt.

    Torque:
    34.5 N*m{352 kgf*cm, 25 ft.*lbf}


4. INSTALL WATER INLET HOUSING


Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Install a new O-ring.

  1. Apply soapy water to the O-ring.

  1. Apply seal packing to the groove of the water inlet housing as shown in the illustration.

    Seal packing:
    Part No. 08826-00100 or equivalent
    NOTICE:
    1. After applying seal packing, install the part within 5 minutes.
    2. Be sure to keep the O-ring away from engine oil. The O-ring must be replaced if it contacts engine oil.


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Install the water inlet housing with the 2 bolts. Then connect the water hose.

    Bolt length:
    Item
    Specified Condition
    Bolt A
    77 mm (3.03 in.)
    Bolt B
    22 mm (0.86 in.)
    Torque:
    18 N*m{194 kgf*cm, 24 ft.*lbf}


5. INSTALL TIMING BELT
  1. Check the No. 1 and No. 2 belt idlers.

    1. Visually check the seal portion of the idler pulley for oil leakage.

      1. If leakage is found, replace the idler.
    2. Check that the idler turns smoothly.

      1. If necessary, replace the idler.


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Check the water pump.

    1. Visually check the air hole and water hole for coolant leakage.

      1. If leakage is found, replace the water pump and belt.
    2. Turn the pulley, and check that the water pump bearing moves smoothly and quietly.

      1. If necessary, replace the water pump.
  1. Remove any oil or water on the crankshaft, oil pump pulley, water pump pulley, No. 1 and No. 2 idler. Keep them clean.

    NOTICE:
    Only wipe the pulleys. Do not use any cleansing agents on the pulleys.


  1. Set the No. 1 cylinder to TDC/compression.



      Lexus Gs430, Gs300. Uzs190 Grs190
    1. Turn the hexagon head portion of the camshaft to align the timing marks of the camshaft timing pulleys and timing belt plates.

      HINT:
      Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
      Turn the camshaft timing pulleys slightly clockwise to make installation of the timing belt easier.
      Camshaft timing pulley of LH bank:
      1/2 of a tooth
      Camshaft timing pulley of RH bank:
      1 tooth


    2. Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
    3. Using the crankshaft damper bolt, turn the crankshaft to align the timing marks of the crankshaft timing pulley and oil pump body.



    4. Lexus Gs430, Gs300. Uzs190 Grs190
    5. Remove any oil or water on each pulley. Keep them clean.

      NOTICE:
      Only wipe the pulleys. Do not use cleaning agents on the pulleys.
    6. Face the front mark (arrow) on the belt forward.

    7. Connect the belt to the crankshaft timing pulley. Align the installation mark on the belt with the timing mark of the crankshaft timing pulley.

    8. Connect the belt to the No. 2 idler.

    9. Connect the belt to the camshaft timing pulley (LH bank). Align the installation mark on the belt with the timing mark of the camshaft timing pulley.

    10. Connect the belt to the water pump pulley.

    11. Connect the belt to the camshaft timing pulley (RH bank). Align the installation mark on the belt with the timing mark of the camshaft timing pulley.

    12. Connect the timing belt to the No. 1 idler.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Set the belt tensioner.

    1. Using a press, slowly press in the push rod using 981 to 9,807 N (100 to 1,000 kgf, 220 to 2,205 lbf) of pressure.

    2. Align the holes of the push rod and housing. Pass a 1.27 mm hexagon wrench through the holes to keep the setting position of the push rod.

    3. Release the press.

    4. Install the dust boot to the belt tensioner.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Install the belt tensioner.

    1. Temporarily install the belt tensioner with the 2 bolts.

    2. Alternately tighten the 2 bolts.

      Torque:
      26 N*m{265 kgf*cm, 19 ft.*lbf}
    3. Using pliers, remove the 1.27 mm hexagon wrench from the belt tensioner.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Check the valve timing.

    1. Using the crankshaft damper bolt, slowly turn the crankshaft timing pulley 2 revolutions from TDC to TDC.

      NOTICE:
      Always turn the crankshaft pulley clockwise.


    2. Lexus Gs430, Gs300. Uzs190 Grs190
    3. Check that each pulley aligns with the timing marks as shown in the illustration.

      1. If the pulley and timing marks do not align, remove the belt and reinstall it.
    4. Remove the crankshaft damper bolt.



6. INSTALL NO. 1 CRANKSHAFT POSITION SENSOR PLATE


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Install the sensor with the bolt and stud bolt.

    Torque:
    7.5 N*m{76 kgf*cm, 66 in.*lbf}


7. INSTALL TIMING GEAR COVER SPACER
  1. Install a new gasket and cover spacer.



8. INSTALL NO. 1 TIMING BELT COVER
  1. Install the timing belt cover with the 4 bolts.

    Torque:
    7.5 N*m{76 kgf*cm, 66 in.*lbf}


9. INSTALL NO. 2 TIMING BELT COVER SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Set the No. 2 cover by matching the claws and pin with each part.

  1. Install the timing belt cover with the 2 bolts.

    Torque:
    16 N*m{163 kgf*cm, 12 ft.*lbf}
    HINT:
    Use bolts that are 106 mm (4.17 in.) in length.


10. INSTALL IDLER PULLEY ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Install the idler with the 2 bolts and 2 nuts.

    Torque:
    16 N*m{163 kgf*cm, 12 ft.*lbf} for 12 mm head
    Torque:
    32 N*m{326 kgf*cm, 24 ft.*lbf} for 14 mm head
    Bolt length:
    106 mm (4.17 in.) for 12 mm head bolt A
    114 mm (4.49 in.) for 14 mm head bolt B


11. INSTALL NO. 3 TIMING BELT COVER SUB-ASSEMBLY RH


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Install the gasket to the cover.

  1. Install the cover with the cap nut and 3 bolts.

    Torque:
    7.5 N*m{76 kgf*cm, 66 in.*lbf}


12. INSTALL NO. 3 TIMING BELT COVER SUB-ASSEMBLY LH


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Install the gasket to the cover.

  1. Pass the camshaft position sensor wire through the cover hole.

  1. Install the cover with the 4 bolts.

    Torque:
    7.5 N*m{76 kgf*cm, 66 in.*lbf}
  1. Install the wire grommet to the cover.

  1. Install the sensor connector to the sensor holder.

  1. Connect the sensor connector.

  1. Install the sensor wire to the wire clamp on the cover.

  1. Install the engine wire to the 2 wire clamps on the cover.



13. CONNECT OIL COOLER PIPE


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Connect the 3 water by-pass hoses as shown in the illustration.

  1. Install the oil cooler pipe to the cover with the cap nut and the bolt.

    Torque:
    7.5 N*m{76 kgf*cm, 66 in.*lbf}


14. INSTALL CRANKSHAFT DAMPER SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Align the damper set key with the key groove of the crankshaft damper.

  1. Using SST and a hammer, tap in the crankshaft damper.

    SST
    09223-46011


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Using SST, install the damper bolt.

    SST
    09213-70011
    09330-00021
    Torque:
    245 N*m{2,498 kgf*cm, 181 ft.*lbf}


15. INSTALL NO. 2 IDLER PULLEY SUB-ASSEMBLY
  1. Install the pulley with the bolt.

    Torque:
    39 N*m{398 kgf*cm, 29 ft.*lbf}


16. INSTALL V-RIBBED BELT TENSIONER ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Install the belt tensioner with the bolt and 2 nuts.

    Torque:
    15.5 N*m{158 kgf*cm, 11 ft.*lbf}
    HINT:
    Use a bolt that is 106 mm (4.17 in.) in length.


17. INSTALL COMPRESSOR ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Hang the compressor bracket onto the fan bracket and temporarily install the compressor with the bolt.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Install the compressor with the 3 bolts, nut and bracket.

    Torque:
    49 N*m{500 kgf*cm, 36 ft.*lbf} for bolt
    29.4 N*m{300 kgf*cm, 22 ft.*lbf} for nut
    NOTICE:
    Tighten the bolts in the order shown in the illustration to install the compressor.


18. INSTALL GENERATOR ASSEMBLY


Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Install the generator with the bolt and 2 nuts.

    HINT:
    Install the bolt and 2 nuts in alphabetical order.
    Torque:
    39 N*m{398 kgf*cm, 29 ft.*lbf} for bolt A and nut B
    15.5 N*m{158 kgf*cm, 11 ft.*lbf} for nut C
  1. Install the ground cable with the bolt D.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Install the battery cable with the nut, and then attach the rubber cap.

    Torque:
    12 N*m{122 kgf*cm, 9 ft.*lbf}
  1. Install the bracket with the bolt.

    Torque:
    6.0 N*m{61 kgf*cm, 53 in.*lbf}
  1. Connect the cable to the generator.



19. INSTALL V-RIBBED BELT


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Set the V-belt to everything except the No. 2 idler pulley, as shown in the illustration.

  1. Loosen the V-belt by turning the belt tensioner counterclockwise.

  1. Then set the V-belt to the idler pulley.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. After a new belt has been installed, check that the mark is within the A range shown in the illustration.



20. INSTALL RADIATOR ASSEMBLY


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Install the 2 radiator support cushions and 2 radiator lower supports to the radiator.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Install the fan to the radiator, and attach the 3 claws.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Install the radiator and attach the ECM outlet duct.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Align the radiator with the condenser. Then install the radiator with the 4 bolts.

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


21. INSTALL UPPER RADIATOR SUPPORT SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Install the radiator support with the 5 bolts.

    Torque:
    5.5 N*m{56 kgf*cm, 48 in.*lbf}


  1. Attach the 6 clamps and install the wire harness.


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation



22. INSTALL HOOD LOCK ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Apply MP grease to the sliding areas of the lock.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Install the hood lock.

  1. Install the 2 bolts and nut.

    Torque:
    8.0 N*m{82 kgf*cm, 71 in.*lbf}
  1. Install a new cap.

  1. Connect the hood lock control cable.



23. INSTALL HOOD LOCK CONTROL CABLE COVER


Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Attach the claw and install the cable cover.

  1. Install the 3 screws.



24. INSTALL RADIATOR SUPPORT OPENING COVER


Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Install the cover with the 4 clips.



25. INSTALL FRONT BUMPER COVER
  1. Connect the ultrasonic sensor connector.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Attach the 3 claws on the LH side.

  1. Attach the 3 claws on the RH side.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Install the bumper cover with the 2 clips, 6 screws and 5 bolts.



26. DISCONNECT NO. 1 OIL COOLER OUTLET TUBE



Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation

  1. Temporarily install the oil cooler outlet tube.

  1. Temporarily install the oil cooler inlet tube.

  1. Install the 2 clamps with the 2 bolts.

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


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Tighten the oil cooler outlet tube No. 1.

    Torque:
    42 N*m{428 kgf*cm, 31 ft.*lbf}
    NOTICE:
    Use a torque wrench with a fulcrum length of 460 mm (18.11 in.).


27. DISCONNECT NO. 1 OIL COOLER INLET TUBE


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Tighten the oil cooler inlet tube.

    Torque:
    42 N*m{428 kgf*cm, 31 ft.*lbf}
    NOTICE:
    Use a torque wrench with a fulcrum length of 460 mm (18.11 in.).


28. CONNECT RADIATOR HOSE OUTLET


Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Connect the hose outlet.

    HINT:
    1. Face the clamp's claw toward the bottom of the vehicle.
    1. Make sure the clearance between the clamp edge and radiator hose edge (labeled A) is between 1 to 5 mm (0.039 to 0.197 in.).
    1. Insert the hose until it contacts the radiator. Make sure the clearance between the hose and radiator (labeled B) is between 0 to 2.5 mm (0 to 0.098 in.).


29. CONNECT RADIATOR HOSE INLET


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Connect the hose inlet.



30. ADD ENGINE COOLANT
  1. Tighten the radiator drain cock plug by hand.

  1. Tighten the 2 cylinder block drain cock plugs.

    Torque:
    12.7 N*m{130 kgf*cm, 9 ft.*lbf}
  1. Add engine coolant.

    HINT:
    Add engine coolant until coolant overflows from the vent plug.
    Specified capacity:
    11.0 liters (11.7 US qts, 9.7 lmp. qts)
    HINT:
    1. TOYOTA 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).
    1. Please contact your TOYOTA dealer for further details.
  1. Install the vent plug.

  1. Slowly pour coolant into the radiator reservoir until it reaches the FULL line.

  1. Press the inlet and outlet radiator hoses several times by hand, and then check the level of the coolant.
    If the coolant level is low, add coolant.

  1. Install the radiator cap.

  1. Bleed air from the cooling system.

    1. Warm up the engine until the thermostat opens. While the thermostat is open, circulate the coolant for several minutes.

      HINT:
      Adjust the air conditioner set temperature to MAX (HOT).
    2. Maintain the engine speed at 2,000 to 2,500 rpm.

    3. Press the inlet and outlet radiator hoses several times by hand to bleed air.

      NOTICE:
      When pressing the radiator hoses:
      1. Wear protective gloves.
      1. Be careful as the radiator hoses are hot.
      1. Keep your hands away from the radiator fan.
  1. Stop the engine, and wait until the engine coolant cools down to ambient temperature.

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


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Check the coolant level in the radiator reservoir.
    If the coolant level is low, add SLLC to the radiator reservoir FULL line.



31. CHECK FOR ENGINE COOLANT LEAKS
  1. Check for engine coolant leaks (Click here).



32. INSTALL AIR CLEANER ASSEMBLY
  1. Install the air cleaner assembly with the 3 bolts.

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


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Connect the MAF meter connector and clamp to the air cleaner.



33. INSTALL NO. 1 AIR CLEANER INLET
  1. Install the inlet with the bolt.

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


34. INSTALL ENGINE ROOM SIDE COVER LH


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Install the side cover with the 3 clips.



35. INSTALL ENGINE ROOM SIDE COVER RH


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Install the side cover with the 2 clips and nut.



36. INSTALL COOL AIR INTAKE DUCT SEAL


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Install the duct seal with the 7 clips.



37. INSTALL V-BANK COVER SUB-ASSEMBLY
  1. Install the cover with the 2 nuts.

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


38. INSTALL ENGINE UNDER COVER
  1. Connect the ultrasonic sensor connector.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Cooling.Cooling System.Water Pump  Installation
  1. Attach the 3 claws on the LH side.

  1. Attach the 3 claws on the RH side.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Install the bumper cover with the 2 clips, 6 screws and 5 bolts.



39. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL


40. PERFORM INITIALIZATION
  1. Perform initialization (Click here).

    NOTICE:
    Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.