Water Pump Removal

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

  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

  2. REMOVE ENGINE UNDER COVER

  3. REMOVE V-BANK COVER SUB-ASSEMBLY

  4. REMOVE COOL AIR INTAKE DUCT SEAL

  5. REMOVE ENGINE ROOM SIDE COVER RH

  6. REMOVE ENGINE ROOM SIDE COVER LH

  7. REMOVE NO. 1 AIR CLEANER INLET

  8. REMOVE INTAKE AIR CONNECTOR PIPE

  9. REMOVE AIR CLEANER ASSEMBLY

  10. DISCONNECT RADIATOR HOSE INLET

  11. DISCONNECT RADIATOR HOSE OUTLET

  12. DISCONNECT NO. 1 OIL COOLER INLET TUBE

  13. DISCONNECT NO. 1 OIL COOLER OUTLET TUBE

  14. REMOVE FRONT BUMPER COVER

  15. REMOVE RADIATOR SUPPORT OPENING COVER

  16. REMOVE HOOD LOCK CONTROL CABLE COVER

  17. REMOVE HOOD LOCK ASSEMBLY

  18. REMOVE UPPER RADIATOR SUPPORT SUB-ASSEMBLY

  19. REMOVE RADIATOR ASSEMBLY

  20. REMOVE V-RIBBED BELT

  21. REMOVE GENERATOR ASSEMBLY

  22. REMOVE COMPRESSOR ASSEMBLY

  23. REMOVE V-RIBBED BELT TENSIONER ASSEMBLY

  24. REMOVE NO. 2 IDLER PULLEY SUB-ASSEMBLY

  25. REMOVE CRANKSHAFT DAMPER SUB-ASSEMBLY

  26. DISCONNECT OIL COOLER PIPE

  27. REMOVE NO. 3 TIMING BELT COVER SUB-ASSEMBLY LH

  28. REMOVE NO. 3 TIMING BELT COVER SUB-ASSEMBLY RH

  29. REMOVE NO. 2 TIMING BELT COVER SUB-ASSEMBLY

  30. REMOVE IDLER PULLEY ASSEMBLY

  31. REMOVE NO. 1 TIMING BELT COVER

  32. REMOVE TIMING GEAR COVER SPACER

  33. REMOVE NO. 1 CRANKSHAFT POSITION SENSOR

  34. REMOVE NO. 1 TIMING BELT TENSIONER ASSEMBLY

  35. REMOVE NO. 1 CRANKSHAFT POSITION SENSOR PLATE

  36. REMOVE TIMING BELT

  37. REMOVE WATER INLET HOUSING

  38. REMOVE NO. 2 TIMING BELT IDLER SUB-ASSEMBLY

  39. REMOVE WATER PUMP ASSEMBLY

Water Pump -- Removal



1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION:
Wait at least 90 seconds after disconnecting the cable from negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.


2. REMOVE ENGINE UNDER COVER


Lexus Gs430, Gs300. Uzs190 Grs190

  1. Using a clip remover, remove the 3 clips.

  1. Remove the 10 screws and under cover.



3. REMOVE V-BANK COVER SUB-ASSEMBLY

  1. Remove the 2 bolts and cover.



4. REMOVE COOL AIR INTAKE DUCT SEAL


Lexus Gs430, Gs300. Uzs190 Grs190

  1. Using a clip remover, remove the 7 clips and duct seal.



5. REMOVE ENGINE ROOM SIDE COVER RH


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

  1. Remove the nut, 2 clips and side cover.



6. REMOVE ENGINE ROOM SIDE COVER LH


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

  1. Remove the 3 clips and side cover.



7. REMOVE NO. 1 AIR CLEANER INLET

  1. Remove the bolt and inlet.



8. REMOVE INTAKE AIR CONNECTOR PIPE


    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Disconnect the air hose and No. 1 ventilation hose.

  1. Loosen the 2 hose clamps and remove the intake air connector.



9. REMOVE AIR CLEANER ASSEMBLY

  1. Disconnect the MAF meter connector and clamp.

  1. Remove the 3 bolts and air cleaner assembly.



10. DISCONNECT RADIATOR HOSE INLET


Lexus Gs430, Gs300. Uzs190 Grs190

  1. Disconnect the hose inlet.



11. DISCONNECT RADIATOR HOSE OUTLET


Lexus Gs430, Gs300. Uzs190 Grs190

  1. Disconnect the hose outlet.



12. DISCONNECT NO. 1 OIL COOLER INLET TUBE


Lexus Gs430, Gs300. Uzs190 Grs190

  1. Disconnect the tube from the radiator.



13. DISCONNECT NO. 1 OIL COOLER OUTLET TUBE


Lexus Gs430, Gs300. Uzs190 Grs190

  1. Disconnect the tube from the radiator.

  1. Detach the tube from the radiator's clamp.



14. REMOVE FRONT BUMPER COVER

  1. Using a clip remover, remove the 2 clips.

    HINT:
    Put protective tape under the front fender.


    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Remove the 6 screws and 5 bolts.



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

  1. Pull the bumper cover to detach the 3 claws on the LH side.

  1. Pull the bumper cover to detach the 3 claws on the RH side and remove the bumper cover.

  1. w/ Clearance sonar system:
    Disconnect the ultrasonic sensor connector.



15. REMOVE RADIATOR SUPPORT OPENING COVER


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

  1. Remove the 4 clips and cover.



16. REMOVE HOOD LOCK CONTROL CABLE COVER


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

  1. Remove the 3 screws.

  1. Detach the claw and remove the cable cover.



17. REMOVE HOOD LOCK ASSEMBLY


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

  1. Disconnect the hood lock control cable.

  1. Remove the cap.

  1. Remove the 2 bolts and nut.

  1. Remove the hood lock.



18. REMOVE UPPER RADIATOR SUPPORT SUB-ASSEMBLY


  1. Using a clip remover, detach the 6 clamps and remove the wire harness.


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



    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Disconnect the connectors.

  1. Remove the 5 bolts and radiator support.



19. REMOVE RADIATOR ASSEMBLY

  1. Disconnect the wire harness from the cooling fan ECU.



    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Remove the 4 bolts.



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

  1. Detach the ECM outlet duct.

  1. Remove the radiator from the engine room.



    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Disconnect the reservoir hose.



    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Detach the 3 claws and remove the fan.



    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Remove the 2 radiator support cushions and 2 radiator lower supports from the radiator.



20. REMOVE V-RIBBED BELT


    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Loosen the belt tension by turning the belt tensioner counterclockwise, and remove the belt.

    HINT:
    The tension pulley has a left hand thread.


21. REMOVE GENERATOR ASSEMBLY


Lexus Gs430, Gs300. Uzs190 Grs190

  1. Disconnect the generator connector.

  1. Remove the bolt and bracket.

  1. Detach the rubber cap, and then remove the nut and battery cable.



    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Remove the bolt and ground cable.

  1. Remove the bolt, 2 nuts and generator.



22. REMOVE COMPRESSOR ASSEMBLY


Lexus Gs430, Gs300. Uzs190 Grs190

  1. Disconnect the connector.

  1. Remove the 3 bolts, nut and bracket.

  1. Remove the compressor.



23. REMOVE V-RIBBED BELT TENSIONER ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Remove the bolt, 2 nuts and belt tensioner.



24. REMOVE NO. 2 IDLER PULLEY SUB-ASSEMBLY

  1. Remove the bolt, cover plate and pulley.



25. REMOVE CRANKSHAFT DAMPER SUB-ASSEMBLY


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

  1. Using SST, remove the damper bolt.

    SST
    09213-70011
    09330-00021


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

  1. Using SST, remove the damper.

    SST
    09950-50013(09951-05010,09952-05010,09953-05010,09953-05020,09954-05021)


26. DISCONNECT OIL COOLER PIPE


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

  1. Remove the cap nut and the bolt.

  1. Disconnect the oil cooler pipe from the timing belt cover.

  1. Disconnect the 3 water by-pass hoses from the oil cooler pipe.



27. REMOVE NO. 3 TIMING BELT COVER SUB-ASSEMBLY LH


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

  1. Disconnect the engine wire from the 2 wire clamps.

  1. Disconnect the camshaft position sensor connector.

  1. Disconnect the camshaft position sensor wire from the wire clamp on the timing belt cover.

  1. Remove the wire grommet from the timing belt cover.

  1. Remove the 4 bolts.

  1. Disconnect the timing belt cover from the timing plate and camshaft bearing cap.

  1. Disconnect the wire clamp for the sensor from the timing belt cover.

  1. Remove the connector holder from the sensor connector.

  1. Remove the timing belt cover.



28. REMOVE NO. 3 TIMING BELT COVER SUB-ASSEMBLY RH


    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Remove the cap nut, 3 bolts, timing belt cover and gasket.



29. REMOVE NO. 2 TIMING BELT COVER SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Remove the 2 bolts and timing belt cover.



30. REMOVE IDLER PULLEY ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Remove the 2 bolts, 2 nuts and idler pulley.



31. REMOVE NO. 1 TIMING BELT COVER

  1. Remove the 4 bolts and cover.



32. REMOVE TIMING GEAR COVER SPACER

  1. Remove the cover spacer and gasket.



33. REMOVE NO. 1 CRANKSHAFT POSITION SENSOR


    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Disconnect the sensor connector.

  1. Remove the bolt and sensor.



34. REMOVE NO. 1 TIMING BELT TENSIONER ASSEMBLY

  1. Remove the 2 bolts and tensioner.



35. REMOVE NO. 1 CRANKSHAFT POSITION SENSOR PLATE

  1. Remove the plate.



36. REMOVE TIMING BELT


    Lexus Gs430, Gs300. Uzs190 Grs190

  1. If planning to reuse the belt, check the installation marks on the timing belt.

    1. Check that there are 3 installation marks on the belt by turning the crankshaft as shown in the illustration.

      1. If the installation marks have disappeared, place new installation marks on the belt before removing each part.


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

  1. Set the No. 1 cylinder to approximately 50° BTDC/compression.

    1. Using the crankshaft damper bolt, turn the crankshaft to align the timing marks of the crankshaft timing pulley and oil pump body.



      2. Lexus Gs430, Gs300. Uzs190 Grs190

    2. Check that the timing marks of the camshaft timing pulleys and timing belt plates are aligned.

      1. If not, turn the crankshaft 1 revolution (360°).


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

    3. Using the crankshaft damper bolt, turn the crankshaft counterclockwise by approximately 45°.

      NOTICE:
      With the timing belt disengaged, the crankshaft damper must be at the correct angle to avoid damage in a later step.

  1. Alternately loosen the 2 bolts. Then remove the 2 bolts, belt tensioner and dust boot.



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

  1. Using SST, loosen the tension between the camshaft timing pulley (RH bank) and crankshaft timing pulley by slightly turning the camshaft timing pulley (RH bank) counterclockwise.

    SST
    09960-10010(09962-01000,09963-00350)

  1. Disconnect the belt from the No. 1 timing belt idler, and remove the belt.



37. REMOVE WATER INLET HOUSING


Lexus Gs430, Gs300. Uzs190 Grs190

  1. Remove the 2 bolts and water inlet housing.

  1. Remove the O-ring from the inlet housing.



38. REMOVE NO. 2 TIMING BELT IDLER SUB-ASSEMBLY

  1. Remove the bolt, cover plate and pulley.



39. REMOVE WATER PUMP ASSEMBLY


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

  1. Remove the 5 bolts, 2 stud bolts and nut.



    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Using a screwdriver, remove the water pump and gasket.

  1. Remove the O-ring.