Engine Assembly Removal

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

  1. DISCHARGE FUEL SYSTEM PRESSURE

  2. DISCONNECT CABLE FROM BATTERY NEGATIVE TERMINAL

  3. PLACE FRONT WHEELS FACING STRAIGHT AHEAD

  4. REMOVE FRONT WHEEL

  5. REMOVE COOL AIR INTAKE DUCT SEAL

  6. REMOVE ENGINE ROOM SIDE COVER RH

  7. REMOVE ENGINE ROOM SIDE COVER LH

  8. REMOVE NO. 1 AIR CLEANER INLET

  9. REMOVE V-BANK COVER

  10. REMOVE ENGINE UNDER COVER

  11. REMOVE NO. 2 ENGINE UNDER COVER

  12. REMOVE ENGINE UNDER COVER REAR RH

  13. REMOVE ENGINE UNDER COVER REAR LH

  14. REMOVE ECM COVER

  15. DISCONNECT ENGINE WIRE

  16. REMOVE POWER STEERING LINK WIRE HARNESS

  17. DRAIN ENGINE OIL

  18. DRAIN ENGINE COOLANT

  19. DRAIN AUTOMATIC TRANSMISSION FLUID

  20. REMOVE INTAKE AIR CONNECTOR PIPE

  21. REMOVE AIR CLEANER ASSEMBLY

  22. DISCONNECT RADIATOR HOSE INLET

  23. DISCONNECT RADIATOR HOSE OUTLET

  24. DISCONNECT NO. 1 OIL COOLER INLET TUBE

  25. DISCONNECT NO. 1 OIL COOLER OUTLET TUBE

  26. REMOVE RADIATOR ASSEMBLY

  27. DISCONNECT NO. 2 FUEL PIPE SUB-ASSEMBLY

  28. REMOVE V-RIBBED BELT

  29. DISCONNECT HEATER WATER INLET HOSE A

  30. DISCONNECT HEATER WATER OUTLET HOSE A (FROM HEATER UNIT)

  31. DISCONNECT UNION TO CHECK VALVE HOSE

  32. DISCONNECT COMPRESSOR ASSEMBLY

  33. REMOVE FRONT CONSOLE UPPER PANEL GARNISH

  34. REMOVE CONSOLE UPPER PANEL ASSEMBLY

  35. REMOVE INSTRUMENT PANEL FINISH PANEL END RH

  36. REMOVE INSTRUMENT PANEL FINISH PANEL END LH

  37. DISCONNECT HEATED OXYGEN SENSOR CONNECTOR

  38. REMOVE FRONT FLOOR BRACE CENTER

  39. REMOVE FRONT EXHAUST PIPE ASSEMBLY

  40. REMOVE FRONT NO. 5 FLOOR HEAT INSULATOR

  41. REMOVE FRONT NO. 6 FLOOR HEAT INSULATOR

  42. REMOVE FRONT NO. 1 FLOOR HEAT INSULATOR

  43. REMOVE PROPELLER WITH CENTER BEARING SHAFT ASSEMBLY

  44. REMOVE FRONT TWC

  45. REMOVE NO. 1 EXHAUST PIPE SUPPORT BRACKET SUB-ASSEMBLY

  46. DISCONNECT FLOOR SHIFT GEAR SHIFTING ROD SUB-ASSEMBLY

  47. DISCONNECT SHOCK ABSORBER ASSEMBLY FRONT LH

  48. DISCONNECT HEIGHT CONTROL SENSOR LINK

  49. DISCONNECT SHOCK ABSORBER ASSEMBLY FRONT RH

  50. DISCONNECT LOWER BALL JOINT ASSEMBLY FRONT RH

  51. DISCONNECT LOWER BALL JOINT ASSEMBLY FRONT LH

  52. DISCONNECT NO. 2 STEERING INTERMEDIATE SHAFT ASSEMBLY

  53. REMOVE ENGINE AND TRANSMISSION ASSEMBLY

  54. REMOVE ENGINE WIRE

  55. REMOVE NO. 1 OIL COOLER INLET TUBE

  56. REMOVE NO. 1 OIL COOLER OUTLET TUBE

  57. DISCONNECT WIRE HARNESS AND CONNECTOR

  58. REMOVE FLYWHEEL HOUSING UNDER COVER

  59. REMOVE AUTOMATIC TRANSMISSION ASSEMBLY

  60. REMOVE DRIVE PLATE & RING GEAR SUB-ASSEMBLY

  61. REMOVE OIL DIPSTICK GUIDE

  62. REMOVE FRONT ENGINE MOUNTING INSULATOR

  63. REMOVE NO. 1 EXHAUST MANIFOLD HEAT INSULATOR

  64. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY RH

  65. INSPECT EXHAUST MANIFOLD SUB-ASSEMBLY RH

  66. REMOVE NO. 2 EXHAUST MANIFOLD HEAT INSULATOR

  67. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY LH

  68. INSPECT EXHAUST MANIFOLD SUB-ASSEMBLY RH

  69. REMOVE NO. 2 WIRE HARNESS HEAT INSULATOR

  70. REMOVE ENGINE STAND

  71. REMOVE INTAKE MANIFOLD ASSEMBLY

  72. REMOVE GENERATOR ASSEMBLY

  73. REMOVE NO. 1 ENGINE HANGER

  74. REMOVE NO. 2 ENGINE HANGER

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

  76. REMOVE OIL COOLER PIPE

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

  78. REMOVE WATER INLET HOUSING

  79. REMOVE FRONT WATER BY-PASS JOINT

  80. REMOVE REAR WATER BY-PASS JOINT

  81. REMOVE WATER BY-PASS PIPE SUB-ASSEMBLY

  82. REMOVE STARTER ASSEMBLY

  83. REMOVE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

  84. REMOVE CAMSHAFT POSITION SENSOR

  85. REMOVE VVT SENSOR

  86. REMOVE CRANKSHAFT POSITION SENSOR

  87. REMOVE KNOCK SENSOR

  88. REMOVE IGNITION COIL

  89. REMOVE OIL PRESSURE SWITCH

  90. REMOVE NO. 2 OIL COOLER PIPE SUB-ASSEMBLY

  91. REMOVE OIL FILTER BRACKET SUB-ASSEMBLY

  92. REMOVE ENGINE OIL LEVEL SENSOR

  93. REMOVE NO. 1 ENGINE MOUNTING BRACKET FRONT RH

  94. REMOVE NO. 1 ENGINE MOUNTING BRACKET FRONT LH

Engine Assembly -- Removal



1. DISCHARGE FUEL SYSTEM PRESSURE
NOTICE:
  1. Perform the following procedures to prevent fuel from spilling out before removing any fuel system parts.
  1. Pressure will still remain in the fuel line even after performing the following procedures. When disconnecting the fuel line, cover it with a shop rag or a piece of cloth to prevent fuel from spraying.
  1. Remove the F/PMP fuse.

    1. Remove the engine room No. 2 relay block cover upper.

    2. Remove the F/PMP fuse.

    3. Start the engine.

    4. After the engine has stopped, turn the engine switch off.

      HINT:
      DTC P0171/25 (fuel problem) and/or P0191/49 (fuel pressure sensor signal error) may be detected.
    5. Crank the engine again. Check that the engine does not start.

    6. Remove the fuel tank cap to discharge pressure from the fuel tank.

    7. Reinstall the F/PMP fuse.

  1. Disconnect the fuel pump connector.

    1. Remove the rear seat cushion.

    2. Remove the rear floor service hole cover.

    3. Disconnect the fuel pump connector.

    4. Start the engine.

    5. After the engine has stopped, turn the engine switch off.

      HINT:
      DTC P0171/25 (fuel problem) and/or P0191/49 (fuel pressure sensor signal error) may be detected.
    6. Crank the engine again. Check that the engine does not start.

    7. Remove the fuel tank cap to discharge pressure from the fuel tank.

    8. Reconnect the fuel pump connector.

    9. Install the rear floor service hole cover.

    10. Install the rear seat.



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


3. PLACE FRONT WHEELS FACING STRAIGHT AHEAD


4. REMOVE FRONT WHEEL


5. REMOVE COOL AIR INTAKE DUCT SEAL


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Remove the 7 clips and intake duct seal.



6. REMOVE ENGINE ROOM SIDE COVER RH


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Remove the nut, 2 clips and side cover.



7. REMOVE ENGINE ROOM SIDE COVER LH


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Remove the 3 clips and side cover.



8. REMOVE NO. 1 AIR CLEANER INLET
  1. Remove the bolt and air cleaner inlet.



9. REMOVE V-BANK COVER
  1. Remove the 2 nuts and V-bank cover.



10. REMOVE ENGINE UNDER COVER


11. REMOVE NO. 2 ENGINE UNDER COVER


12. REMOVE ENGINE UNDER COVER REAR RH
  1. Remove the 2 screws and cover.



13. REMOVE ENGINE UNDER COVER REAR LH
  1. Remove the 2 screws and cover.



14. REMOVE ECM COVER


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 3 bolts and ECM cover.



15. DISCONNECT ENGINE WIRE
  1. Disconnect the engine wire from the connector holder.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Using a screwdriver, disconnect the connector holder.

    HINT:
    Tape the screwdriver tip before use.
  1. Disconnect the 5 ECM connectors.

  1. Remove the nut and disconnect the positive battery (+) cable.

  1. Remove the engine room No. 1 relay block cover.

  1. Remove the nut and disconnect the wire from the engine room No. 1 junction block.

  1. Remove the bolt and disconnect the ground cable.



16. REMOVE POWER STEERING LINK WIRE HARNESS


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Remove bolt (A) to disconnect the ground wire from the bracket.

  1. Remove the 2 clamps to disconnect the wire harness from the bracket.

  1. Disconnect connector (C) and (D) from the power steering link assembly.

  1. Release the lock of connector (E) and disconnect connector (E) from the power steering link assembly.

  1. Remove bolt (B) and the power steering ground wire from the power steering link assembly.



17. DRAIN ENGINE OIL
  1. Remove the oil filler cap.

  1. Remove the oil drain plug and drain the oil into a container.



18. DRAIN ENGINE COOLANT
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.
  1. Remove the radiator cap and vent plug.



  1. Loosen the radiator drain cock plug and 2 cylinder block drain cock plugs. Then drain the coolant.

    HINT:
    Collect the coolant in a container and dispose of it according to the regulations in your area.


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal



19. DRAIN AUTOMATIC TRANSMISSION FLUID
  1. Remove the drain plug and gasket, and drain the ATF.

  1. Install a new gasket and the drain plug.

    Torque:
    20 N*m{204 kgf*cm, 15 ft.*lbf}


20. 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.



21. REMOVE AIR CLEANER ASSEMBLY
  1. Disconnect the MAF meter connector and clamp.

  1. Remove the 3 bolts and air cleaner assembly.



22. DISCONNECT RADIATOR HOSE INLET


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



23. DISCONNECT RADIATOR HOSE OUTLET


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Disconnect the hose outlet.



24. DISCONNECT NO. 1 OIL COOLER INLET TUBE


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Disconnect the tube from the radiator.



25. 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.



26. REMOVE RADIATOR ASSEMBLY
  1. Remove the radiator (Click here).



27. DISCONNECT NO. 2 FUEL PIPE SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the No. 2 fuel pipe clamp.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Disconnect the fuel tube connector connected to the fuel main tube, then pinch and pull the connector.



28. 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.


29. DISCONNECT HEATER WATER INLET HOSE A


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the clamp and disconnect the heater water inlet hose A.



30. DISCONNECT HEATER WATER OUTLET HOSE A (FROM HEATER UNIT)
  1. Remove the clamp and disconnect the heater water outlet hose A.



31. DISCONNECT UNION TO CHECK VALVE HOSE
  1. Remove the clamp and disconnect the union to check valve hose.



32. DISCONNECT COMPRESSOR ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Disconnect the connector.

  1. Remove the 3 bolts, nut and bracket.

  1. Remove the compressor.



33. REMOVE FRONT CONSOLE UPPER PANEL GARNISH


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using a clip remover, detach the claws and remove the garnish.

    HINT:
    Tape the clip remover tip before use.


34. REMOVE CONSOLE UPPER PANEL ASSEMBLY


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Twist the shift lever knob in the direction indicated by the arrow and remove it.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Using a screwdriver, detach the 9 clips.

    HINT:
    Tape the screwdriver tip before use.
  1. Remove the ash receptacle and then disconnect the connector.



35. REMOVE INSTRUMENT PANEL FINISH PANEL END RH


Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Remove the screw.

  1. Using a screwdriver, detach the 3 clips and 3 claws.

    HINT:
    Tape the screwdriver tip before use.
  1. Remove the finish panel end.



36. REMOVE INSTRUMENT PANEL FINISH PANEL END LH


Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Remove the screw.

  1. Using a screwdriver, detach the 4 clips and 3 claws.

    HINT:
    Tape the screwdriver tip before use.
  1. Remove the finish panel end.



37. DISCONNECT HEATED OXYGEN SENSOR CONNECTOR
  1. Disconnect the 2 sensor connectors.

  1. Disconnect the grommet and pass the sensor connector out of the cabin through the floor panel.



38. REMOVE FRONT FLOOR BRACE CENTER


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 4 bolts and front floor brace center.



39. REMOVE FRONT EXHAUST PIPE ASSEMBLY


Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Remove the 4 bolts and 4 nuts.

  1. Disconnect the exhaust pipe front ends from the 2 TWCs and remove the 2 gaskets.

  1. Remove the 2 bolts, 2 compression springs, exhaust pipe and gasket.



40. REMOVE FRONT NO. 5 FLOOR HEAT INSULATOR


41. REMOVE FRONT NO. 6 FLOOR HEAT INSULATOR


42. REMOVE FRONT NO. 1 FLOOR HEAT INSULATOR
  1. Remove the 4 nuts and heat insulator.



43. REMOVE PROPELLER WITH CENTER BEARING SHAFT ASSEMBLY
(Click here)


44. REMOVE FRONT TWC


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Remove the 6 nuts and 2 TWCs.

  1. Remove the 2 gaskets from the 2 TWCs.



45. REMOVE NO. 1 EXHAUST PIPE SUPPORT BRACKET SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Remove the 2 bolts and support bracket.



46. DISCONNECT FLOOR SHIFT GEAR SHIFTING ROD SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the nut and disconnect the shifting rod.



47. DISCONNECT SHOCK ABSORBER ASSEMBLY FRONT LH


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Support the front suspension lower arm with a jack.

    NOTICE:
    Be sure to place a wooden block between the jack and the front suspension lower arm to avoid damage.
  1. Loosen the bolt while holding the nut. Disconnect the lower part of the front shock absorber from the front suspension lower arm.

    NOTICE:
    Do not remove the nut.


48. DISCONNECT HEIGHT CONTROL SENSOR LINK
  1. Remove the nut and disconnect the height control sensor link.



49. DISCONNECT SHOCK ABSORBER ASSEMBLY FRONT RH


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Support the front suspension lower arm with a jack.

    NOTICE:
    Be sure to place a wooden block between the jack and the front suspension lower arm to avoid damage.
  1. Loosen the bolt while holding the nut. Separate the lower part of the front shock absorber from the front suspension lower arm.

    NOTICE:
    Do not remove the nut.


50. DISCONNECT LOWER BALL JOINT ASSEMBLY FRONT RH


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 2 bolts and disconnect the steering knuckle from the lower ball joint.



51. DISCONNECT LOWER BALL JOINT ASSEMBLY FRONT LH


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 2 bolts and steering knuckle from the lower ball joint.



52. DISCONNECT NO. 2 STEERING INTERMEDIATE SHAFT ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Fix the steering wheel with the seat belt in order to prevent rotation.

    HINT:
    This operation is useful to prevent damage to the spiral cable.


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Loosen bolt (A) and remove bolt (B), then slide the No. 2 steering intermediate shaft.

    HINT:
    1. Do not remove bolt (A).
    2. Do not disconnect the No. 2 steering intermediate shaft from the power steering link.


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Put matchmarks on the No. 2 steering intermediate shaft and the power steering link.

  1. Separate the No. 2 intermediate shaft from the power steering link.



53. REMOVE ENGINE AND TRANSMISSION ASSEMBLY
  1. Set the engine lifter.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Remove the 4 bolts and disconnect the engine rear mounting member.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Remove the 12 bolts shown in the illustration.

  1. Operate the engine lifter, then remove the engine from the vehicle.

    NOTICE:
    Make sure the engine is clear of all wiring and hoses.


54. REMOVE ENGINE WIRE


55. REMOVE NO. 1 OIL COOLER INLET TUBE
  1. Remove the 2 bolts and clamps.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Loosen the union nut and remove the oil cooler inlet tube.



56. REMOVE NO. 1 OIL COOLER OUTLET TUBE


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Loosen the union nut and remove the oil cooler outlet tube.



57. DISCONNECT WIRE HARNESS AND CONNECTOR


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Tilt down the automatic transmission.

    NOTICE:
    Take care so that the cooling fan does not come into contact with the fan shroud.


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Remove the 5 bolts and wire harness clamps.

  1. Disconnect the park/neutral position switch connector.

  1. Disconnect the transmission wire connector.

  1. Disconnect the 2 speed sensor connectors.

  1. Disconnect the wire harness from the automatic transmission.

    HINT:
    Bolt (A) is tightened to the transmission housing.


58. REMOVE FLYWHEEL HOUSING UNDER COVER


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 2 bolts and under cover.



59. REMOVE AUTOMATIC TRANSMISSION ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Turn the crankshaft to gain access to each bolt.

  1. Hold the crankshaft pulley nut with a wrench and remove the 6 bolts.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 9 bolts.

  1. Separate and remove the automatic transmission.



60. REMOVE DRIVE PLATE & RING GEAR SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Remove the 8 bolts, rear spacer, ring gear and front spacer.



61. REMOVE OIL DIPSTICK GUIDE
  1. Remove the bolt, guide and O-ring.



62. REMOVE FRONT ENGINE MOUNTING INSULATOR


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Remove the 2 bolts. Then remove the front suspension crossmember sub-assembly from the engine.



63. REMOVE NO. 1 EXHAUST MANIFOLD HEAT INSULATOR


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 4 bolts and heat insulator.



64. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY RH


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 8 nuts, exhaust manifold and gasket.



65. INSPECT EXHAUST MANIFOLD SUB-ASSEMBLY RH


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using a precision straightedge and feeler gauge, measure the surface contacting the cylinder head for warpage.

    Maximum warpage:
    0.50 mm (0.0197 in.)
    If the warpage is greater than the maximum, replace the manifold.


66. REMOVE NO. 2 EXHAUST MANIFOLD HEAT INSULATOR


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 4 bolts and heat insulator.



67. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY LH


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 8 nuts, exhaust manifold and gasket.



68. INSPECT EXHAUST MANIFOLD SUB-ASSEMBLY RH


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using a precision straightedge and feeler gauge, measure the surface contacting the cylinder head for warpage.

    Maximum warpage:
    0.50 mm (0.0197 in.)
    If the warpage is greater than the maximum, replace the manifold.


69. REMOVE NO. 2 WIRE HARNESS HEAT INSULATOR
  1. Remove the 2 bolts and No. 2 wire harness heat insulator.



70. REMOVE ENGINE STAND


71. REMOVE INTAKE MANIFOLD ASSEMBLY
  1. Remove the manifold (Click here).



72. 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.



73. REMOVE NO. 1 ENGINE HANGER


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Remove the 2 bolts and engine hanger.



74. REMOVE NO. 2 ENGINE HANGER


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Remove the 2 bolts and engine hanger.



75. 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.



76. REMOVE OIL COOLER PIPE


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



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


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



78. REMOVE WATER INLET HOUSING
  1. Remove the 2 bolts and inlet housing.



79. REMOVE FRONT WATER BY-PASS JOINT


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Disconnect the ECT sensor connector.

  1. Remove the 4 nuts, water by-pass joint and 2 gaskets.



80. REMOVE REAR WATER BY-PASS JOINT


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Disconnect the heater inlet hose from the water by-pass joint.

  1. Remove the 4 nuts, water by-pass joint and 2 gaskets.



81. REMOVE WATER BY-PASS PIPE SUB-ASSEMBLY
  1. Disconnect the heater outlet hose from the water by-pass pipe.

  1. Disconnect the wire clamp (for knock sensor 1, 2) from the bracket of the water by-pass pipe.

  1. Remove the bolt.

  1. Pull out the water by-pass pipe from the water pump.

  1. Remove the O-ring from the water by-pass pipe.



82. REMOVE STARTER ASSEMBLY


Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Remove the 2 bolts that hold the starter to the cylinder block.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Disconnect the starter connector.

  1. Detach the terminal cap.

  1. Remove the nut and disconnect the starter cable.

  1. Remove the bolt and disconnect the starter cable protector and remove the starter.



83. REMOVE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY
  1. Disconnect the 2 sensor connectors.

  1. Remove the 2 bolts and 2 oil control valves.



84. REMOVE CAMSHAFT POSITION SENSOR
  1. Disconnect the sensor connector.

  1. Remove the bolt and sensor.



85. REMOVE VVT SENSOR
  1. Disconnect the 2 sensor connectors.

  1. Remove the 2 bolts and sensors.



86. REMOVE CRANKSHAFT POSITION SENSOR
  1. Disconnect the sensor connector.

  1. Remove the bolt and sensor.



87. REMOVE KNOCK SENSOR
  1. Disconnect the 2 sensor connectors.

  1. Remove the 2 sensors.



88. REMOVE IGNITION COIL
  1. Remove the 8 bolts and 8 ignition coils.



89. REMOVE OIL PRESSURE SWITCH
  1. Disconnect the oil pressure switch connector.

  1. Using a 24 mm deep socket wrench, remove the oil pressure switch.



90. REMOVE NO. 2 OIL COOLER PIPE SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Remove the water hoses and bolt.



91. REMOVE OIL FILTER BRACKET SUB-ASSEMBLY
  1. Disconnect the oil pressure switch connector.

  1. Remove the stud bolt, 2 nuts and oil filter bracket with gasket.



92. REMOVE ENGINE OIL LEVEL SENSOR
  1. Disconnect the sensor connector.

  1. Remove the 4 bolts, sensor and gasket.



93. REMOVE NO. 1 ENGINE MOUNTING BRACKET FRONT RH
  1. Remove the 4 bolts and mounting bracket.



94. REMOVE NO. 1 ENGINE MOUNTING BRACKET FRONT LH
  1. Remove the 4 bolts and mounting bracket.