Engine Assembly Removal

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

  1. DISCHARGE FUEL SYSTEM PRESSURE

  2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

  3. REMOVE FRONT WHEEL

  4. DRAIN ENGINE OIL

  5. DRAIN ENGINE COOLANT

  6. DRAIN AUTOMATIC TRANSMISSION FLUID

  7. REMOVE COOL AIR INTAKE DUCT SEAL

  8. REMOVE ENGINE ROOM COVER SIDE RH

  9. REMOVE ENGINE ROOM SIDE COVER LH

  10. REMOVE V-BANK COVER SUB-ASSEMBLY

  11. REMOVE ENGINE UNDER COVER

  12. REMOVE NO. 2 ENGINE UNDER COVER

  13. REMOVE FRONT EXHAUST PIPE ASSEMBLY

  14. REMOVE PROPELLER WITH CENTER BEARING SHAFT ASSEMBLY

  15. REMOVE NO. 1 AIR CLEANER INLET

  16. REMOVE AIR CLEANER ASSEMBLY WITH HOSE

  17. DISCONNECT RADIATOR HOSE INLET

  18. DISCONNECT RADIATOR HOSE OUTLET

  19. DISCONNECT RADIATOR RESERVE TANK HOSE

  20. DISCONNECT UNION TO CHECK VALVE HOSE

  21. DISCONNECT HEATER WATER INLET HOSE A

  22. DISCONNECT HEATER WATER OUTLET HOSE A

  23. DISCONNECT FUEL MAIN TUBE

  24. REMOVE ENGINE ECM COVER

  25. DISCONNECT ENGINE WIRE

  26. REMOVE FAN AND GENERATOR V BELT

  27. REMOVE COMPRESSOR WITH PULLEY ASSEMBLY

  28. DISCONNECT HEIGHT CONTROL SENSOR LINK

  29. REMOVE FRONT SUSPENSION MEMBER PROTECTOR LOWER

  30. REMOVE TIE ROD ASSEMBLY RH

  31. REMOVE TIE ROD ASSEMBLY LH

  32. REMOVE FRONT SHOCK ABSORBER ASSEMBLY RH

  33. REMOVE FRONT SHOCK ABSORBER ASSEMBLY LH

  34. REMOVE NO. 2 STEERING INTERMEDIATE SHAFT ASSEMBLY

  35. REMOVE FRONT LOWER BALL JOINT RH

  36. REMOVE FRONT LOWER BALL JOINT LH

  37. DISCONNECT POWER STEERING LINK WIRE HARNESS

  38. DISCONNECT FLOOR SHIFT GEAR SHIFTING ROD SUB-ASSEMBLY

  39. REMOVE ENGINE AND TRANSMISSION ASSEMBLY

  40. REMOVE AUTOMATIC TRANSMISSION ASSEMBLY

  41. REMOVE DRIVE PLATE AND RING GEAR SUB-ASSEMBLY

  42. REMOVE FRONT ENGINE MOUNTING INSULATOR

  43. FIX ENGINE ON ENGINE STAND

  44. REMOVE ENGINE WIRE

  45. REMOVE OIL DIPSTICK SUB-ASSEMBLY

  46. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY RH

  47. INSPECT EXHAUST MANIFOLD SUB-ASSEMBLY RH

  48. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY LH

  49. INSPECT EXHAUST MANIFOLD SUB-ASSEMBLY LH

  50. REMOVE GENERATOR ASSEMBLY

  51. REMOVE NO. 2 IDLER PULLEY SUB-ASSEMBLY

  52. REMOVE V-RIBBED BELT TENSIONER ASSEMBLY

  53. REMOVE WATER PUMP PULLEY

  54. DISCONNECT NO. 1 WATER BY-PASS HOSE

  55. DISCONNECT NO. 2 WATER BY-PASS HOSE

  56. REMOVE REAR ENGINE COVER SUB-ASSEMBLY

  57. REMOVE NO. 3 WATER BY-PASS PIPE

  58. REMOVE NO. 4 WATER BY-PASS PIPE

  59. REMOVE INTAKE AIR SURGE TANK SUB-ASSEMBLY

  60. INSPECT INTAKE AIR SURGE TANK SUB-ASSEMBLY

  61. REMOVE FUEL PRESSURE PULSATION DAMPER ASSEMBLY

  62. REMOVE FUEL DELIVERY PIPE SUB-ASSEMBLY

  63. REMOVE FUEL INJECTOR ASSEMBLY

  64. REMOVE INTAKE MANIFOLD

  65. INSPECT INTAKE MANIFOLD

  66. REMOVE KNOCK SENSOR

  67. REMOVE ENGINE MOUNTING BRACKET RH

  68. REMOVE ENGINE MOUNTING BRACKET LH

  69. REMOVE OIL FILLER CAP SUB-ASSEMBLY

  70. REMOVE IGNITION COIL ASSEMBLY

  71. REMOVE ENGINE OIL LEVEL SENSOR

  72. REMOVE OIL PRESSURE SWITCH ASSEMBLY

  73. REMOVE ENGINE COOLANT TEMPERATURE SENSOR

Engine Assembly -- Removal



1. DISCHARGE FUEL SYSTEM PRESSURE
CAUTION:
  1. Do not disconnect any part of the fuel system until you have discharged the fuel system pressure.
  2. Even after discharging the fuel pressure, place a cloth or equivalent over fittings as you separate them to reduce the risk of fuel spray on yourself or in the engine compartment.
  1. Disconnect the cable from the negative (-) battery terminal.

    CAUTION:
    Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.


    Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Disconnect the fuel pump connector.

  1. Connect the cable to the negative (-) battery terminal.

  1. Start the engine. After the engine has stopped on its own, turn the engine switch off.

    NOTICE:
    DTC P0171/P0172 (system too lean) may be set.
  1. Crank the engine again, then check that the engine does not start.

  1. Loosen the fuel tank cap, then discharge the pressure in the fuel tank completely.

  1. Connect the fuel pump connector.



2. DISCONNECT CABLE FROM NEGATIVE BATTERY 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. REMOVE FRONT WHEEL


4. DRAIN ENGINE OIL
  1. Remove the drain plug.



5. 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 reservoir cap.



  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 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal



6. DRAIN AUTOMATIC TRANSMISSION FLUID


  1. Add the automatic transmission fluid following the flow chart below.


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



  1. When adding the maximum amount of fluid: [*1]

    1. Lift up the vehicle.



    2. Lexus Gs430, Gs300. Uzs190 Grs190
    3. Remove the 2 bolts and transmission case cover.



    4. Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
    5. Remove the refill plug and overflow plug.



    6. Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
    7. Add ATF through the refill hole until it drains out from the overflow hole.

      NOTICE:
      Be sure to use ATF WS.


    8. Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
    9. Install a new gasket and the overflow plug.

      Torque:
      20 N*m{204 kgf*cm, 15 ft.*lbf}
    10. Add proper amount of ATF through the refill hole.

      NOTICE:
      Refill amount differs depending on the related procedures indicated below.
      Related procedures
      Refill amount
      Removal and installation of oil pan
      (Including the oil drain)
      1.3 liters (1.4 US qts, 1.1 lmp.qts)
      Removal of transmission valve body assembly
      3.3 liters (3.5 US qts, 2.9 lmp.qts)
      Removal of torque converter assembly
      4.4 liters (4.7 US qts, 3.9 lmp.qts)


    11. Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
    12. Install a new O-ring and the refill plug.

      Torque:
      39 N*m{400 kgf*cm, 29 ft.*lbf}
    13. Lower the vehicle.



    14. Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
    15. Using SST, create a short-circuit between terminals TC and CG of the DLC3.

      SST
      09843-18040
    16. Start the engine.

      NOTICE:
      1. Be sure to place the key inside the cabin in order to start the engine.
      2. Turn the A/C off.
    17. Slowly move the shift lever from the P to the S position, shift the gear from 1st to 6th and then return the shift lever to the P position.

    18. Switch to the fluid temperature detection mode.

      1. Move the shift lever from the N to the D position, or from D to N, within 1.5 seconds.
      2. Continue this procedure for 6 seconds or more.
      Standard:
      Meter indicator light "D" comes on for 2 seconds and then goes off.
    19. Return the shift lever to the P position and disconnect terminal TC after confirming the above condition.

    20. Idle the engine to raise fluid temperature.



    21. Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
    22. Lift up the vehicle immediately after meter indicator light "D" comes on.

      NOTICE:
      1. Add fluid only when the meter indicator light is on.
      2. Perform this procedure while the engine is idling.


    23. Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
    24. Remove the overflow plug. If ATF overflows, proceed to [*2].
      If ATF does not overflow, proceed to [*3].

      HINT:
      "Overflow" indicates the condition under which ATF drains out from the overflow tube.


    Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. When fluid overflows: [*2]

    NOTICE:
    Capacity of the overflow tube is approximately 3 cc.

    1. Install a new gasket and the overflow plug when the draining ATF has become a trickle.

      Torque:
      20 N*m{204 kgf*cm, 15 ft.*lbf}
      NOTICE:
      Be careful when handling the drained ATF as it will be hot.
    2. Install a new O-ring and tighten the refill plug.

      Torque:
      39 N*m{400 kgf*cm, 29 ft.*lbf}


    3. Lexus Gs430, Gs300. Uzs190 Grs190
    4. Install the transmission case cover with the 2 bolts.

      Torque:
      5.4 N*m{55 kgf*cm, 48 in.*lbf}
    5. Lower the vehicle.

    6. Turn the engine switch off and remove the SST.



  1. When fluid does not overflow:[*3]



      Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
    1. Remove the refill plug.



    2. Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
    3. Add ATF through the refill hole until it drains out from the overflow hole.



    4. Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
    5. Install a new gasket and the overflow plug when the draining ATF has become a trickle.

      Torque:
      20 N*m{204 kgf*cm, 15 ft.*lbf}
    6. Install a new O-ring and tighten the refill plug.

      Torque:
      39 N*m{400 kgf*cm, 29 ft.*lbf}


    7. Lexus Gs430, Gs300. Uzs190 Grs190
    8. Install the transmission case cover with the 2 bolts.

      Torque:
      5.4 N*m{55 kgf*cm, 48 in.*lbf}
    9. Lower the vehicle.

    10. Turn the engine switch off and remove the SST.



  1. When adding a minimum amount of fluid: [*4]



      Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
    1. Using SST, create a short-circuit between terminals TC and CG of the DLC3.

      SST
      09843-18040
    2. Start the engine.

      NOTICE:
      1. Be sure to place the key inside the cabin in order to start the engine.
      2. Turn the A/C off.
    3. Slowly move the shift lever from the P to the S position, shift the gear from 1st to 6th and then return the shift lever to the P position.

    4. Switch to the fluid temperature detection mode.

      1. Move the shift lever from the N to the D position, or from D to N, within 1.5 seconds.
      2. Continue this procedure for 6 seconds or more.
      Standard:
      Meter indicator light "D" comes on for 2 seconds and then goes off.
    5. Return the shift lever to the P position and disconnect terminal TC after confirming the above condition.

    6. Idle the engine to raise fluid temperature.



    7. Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
    8. Lift up the vehicle immediately after meter indicator light "D" comes on.

      NOTICE:
      1. Add fluid only when the meter indicator light is on.
      2. Perform this procedure while the engine is idling.


    9. Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
    10. Remove the overflow plug. If ATF overflows, proceed to [*5]. If ATF does not overflow, proceed to [*6].

      HINT:
      "Overflow" indicates the condition under which ATF drains out from the overflow tube.


  1. When fluid overflows: [*5]



      Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
    1. Install a new gasket and the overflow plug when the draining ATF has become a trickle.

      Torque:
      20 N*m{204 kgf*cm, 15 ft.*lbf}
      NOTICE:
      Be careful when handling the drained ATF as it will be hot.


    2. Lexus Gs430, Gs300. Uzs190 Grs190
    3. Install the transmission case cover with the 2 bolts.

      Torque:
      5.4 N*m{55 kgf*cm, 48 in.*lbf}
    4. Lower the vehicle.

    5. Turn the engine switch off and remove the SST.



  1. When fluid does not overflow: [*6]



      Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
    1. Remove the refill plug.



    2. Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
    3. Add ATF through the refill hole until it drains out from the overflow hole.



    4. Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
    5. Install a new gasket and the overflow plug when the draining ATF has become a trickle.

      Torque:
      20 N*m{204 kgf*cm, 15 ft.*lbf}
    6. Install a new O-ring and tighten the refill plug.

      Torque:
      39 N*m{400 kgf*cm, 29 ft.*lbf}


    7. Lexus Gs430, Gs300. Uzs190 Grs190
    8. Install the transmission case cover with the 2 bolts.

      Torque:
      5.4 N*m{55 kgf*cm, 48 in.*lbf}
    9. Lower the vehicle.

    10. Turn the engine switch off and remove the SST.



7. REMOVE COOL AIR INTAKE DUCT SEAL


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



8. REMOVE ENGINE ROOM COVER SIDE RH


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



9. REMOVE ENGINE ROOM SIDE COVER LH


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



10. REMOVE V-BANK COVER SUB-ASSEMBLY


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 2 nuts and V-bank cover.



11. 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.



12. REMOVE NO. 2 ENGINE UNDER COVER
  1. Remove the 4 screws, 2 grommets, 2 spacers and under cover.



13. REMOVE FRONT EXHAUST PIPE ASSEMBLY


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

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

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



14. REMOVE PROPELLER WITH CENTER BEARING SHAFT ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Put matchmarks on both flanges.

  1. Remove the 4 nuts, bolts and washers.

    HINT:
    If the flange connection is hard to separate, temporarily tighten one nut only and evenly tap the flange with a brass bar and hammer to separate the propeller shaft assembly from the differential companion flange.


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 2 bolts, 2 center support bearing washers and center support bearing.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Insert SST in the transmission to prevent oil leakage.

    SST
    09325-40010
    NOTICE:
    Be careful not to damage the oil seal.


15. REMOVE NO. 1 AIR CLEANER INLET


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the bolt and air cleaner inlet.



16. REMOVE AIR CLEANER ASSEMBLY WITH HOSE


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Disconnect the ventilation hose from the cylinder head.



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

  1. Disconnect the clamp from the air cleaner.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Disconnect the VSV (for EVAP).

  1. Loosen the hose clamp.

  1. Remove the 3 bolts and air cleaner case.



17. DISCONNECT RADIATOR HOSE INLET
  1. Disconnect the hose from the water inlet with thermostat and radiator tank upper.



18. DISCONNECT RADIATOR HOSE OUTLET
  1. Disconnect the hose from the water inlet and radiator tank lower.



19. DISCONNECT RADIATOR RESERVE TANK HOSE


20. DISCONNECT UNION TO CHECK VALVE HOSE


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the clamp and disconnect the union to check valve hose.



21. DISCONNECT HEATER WATER INLET HOSE A


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



22. DISCONNECT HEATER WATER OUTLET HOSE A


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



23. DISCONNECT FUEL MAIN TUBE


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the fuel pipe clamp.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Pinch and pull the fuel hose's connector to disconnect it from the fuel pipe.

    NOTICE:

    1. Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
      Check for foreign matter in the fuel hose and around the fuel hose's connector. Clean if necessary. Foreign matter can affect the O-ring's ability to seal the connector and fuel pipe.
    2. Do not use any tools to separate the connector and fuel pipe.
    3. Do not forcefully bend or twist the hose.
    4. Keep the connector and pipe free from foreign matter.

    5. Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
      Put the connector in a plastic bag to prevent damage and contamination.
    6. If the connector and fuel pipe are stuck together, pinch the connector and turn it carefully to disconnect it.


24. REMOVE ENGINE ECM COVER


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



25. DISCONNECT ENGINE WIRE


Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Disconnect the ECM connectors.

  1. Using a screwdriver, disconnect the connector holder.

  1. Disconnect the 6 ECM connectors.

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

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



    Lexus Gs430, Gs300. Uzs190 Grs190
  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.



26. REMOVE FAN AND GENERATOR V BELT


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. While releasing the belt tension by turning the belt tensioner counterclockwise, and remove the V-ribbed belt from the belt tensioner.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. While turning the belt tensioner counterclockwise, align with its holes, and then insert the 5 mm bi-hexagon wrench into the holes to fix the V-ribbed belt tensioner.



27. REMOVE COMPRESSOR WITH PULLEY ASSEMBLY


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

  1. Remove the 3 bolts and nut.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using an E8 "torx" socket, remove the stud bolt and with pulley compressor.

    HINT:
    It is not necessary to completely remove the compressor. With the hoses connected to the compressor, hang the compressor on the vehicle body with a rope.


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



29. REMOVE FRONT SUSPENSION MEMBER PROTECTOR LOWER
  1. Remove the 4 bolts and protector.



30. REMOVE TIE ROD ASSEMBLY RH
SST
09628-00011
HINT:
Perform the same procedure as for the LH side.


31. REMOVE TIE ROD ASSEMBLY LH
  1. Remove the clip and the castle nut.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Using SST, separate the tie rod end LH from the steering knuckle.

    SST
    09628-00011
    NOTICE:
    1. Hang SST with a string, etc. to prevent it from falling.
    2. Do not damage the front disc brake dust cover.
    3. Do not damage the ball joint dust cover.
    4. Do not damage the steering knuckle.


32. REMOVE FRONT SHOCK ABSORBER ASSEMBLY RH


    Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Support the front suspension lower arm with a jack. 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.


    Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Loosen the lock nut of the front shock absorber.

    NOTICE:
    1. Do not remove the lock nut.
    2. Loosen the lock nut only when disassembling the front shock absorber with coil spring.


    Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Remove the 3 nuts from the upper side of the front suspension support.

  1. Slowly lower the jack. Remove the bolt and nut from the lower side to remove the front shock absorber with coil spring.



33. REMOVE FRONT SHOCK ABSORBER ASSEMBLY LH


    Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Support the front suspension lower arm with a jack. 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.


    Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Loosen the lock nut of the front shock absorber.

    NOTICE:
    1. Do not remove the lock nut.
    2. Loosen the lock nut only when disassembling the front shock absorber with coil spring.


    Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Remove the 3 nuts from the upper side of the front suspension support.

  1. Slowly lower the jack. Remove the bolt and nut from the lower side to remove the front shock absorber with coil spring.



34. REMOVE 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 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Loosen bolt (A) and remove bolt (B), then slide the steering intermediate shaft assembly No.2.

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

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



35. REMOVE FRONT LOWER BALL JOINT RH


36. REMOVE FRONT LOWER BALL JOINT LH


37. DISCONNECT POWER STEERING LINK WIRE HARNESS


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

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

  1. Disconnect 2 connectors (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 earth wire from the power steering link assembly.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 2 bolts, 2 washers, 2 nuts, and the power steering link assembly from the front suspension cross member.



38. DISCONNECT FLOOR SHIFT GEAR SHIFTING ROD SUB-ASSEMBLY
  1. Set the shift lever to the neutral position.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the nut, and separate the floor shift gear shifting rod sub-assembly.



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



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 4 bolts, then separate the engine rear mounting member.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 12 bolts shown in the illustration.

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

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


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Install the 2 engine hangers with the 4 bolts as shown in the illustration.

    Part No.:
    No. 1 Engine hanger
    12281 - 31070
    No. 2 Engine hanger
    12282 - 31070
    Bolts
    91671 - 10825
    Torque:
    33 N*m{336 kgf*cm, 24 ft.*lbf}
  1. Attach an engine sling device and hang the engine with a chain block.



40. REMOVE AUTOMATIC TRANSMISSION ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 9 bolts and automatic transmission assembly.



41. REMOVE DRIVE PLATE AND RING GEAR SUB-ASSEMBLY


Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Using SST, hold the crankshaft.

    SST
    09213-70011(09213-70020)
    09330-00021


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 8 bolts, front spacer, drive plate and rear spacer.



42. REMOVE FRONT ENGINE MOUNTING INSULATOR


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



43. FIX ENGINE ON ENGINE STAND
  1. Fix the engine onto a engine stand with the bolts.



44. REMOVE ENGINE WIRE
  1. Remove the engine wire from the engine.



45. REMOVE OIL DIPSTICK SUB-ASSEMBLY


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the oil dipstick.

  1. Remove the 2 bolts, then remove the No. 1 and No. 2 oil dipstick guide.

  1. Remove the O-ring from the oil level gauge guide.



46. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY RH
  1. Disconnect the heated oxygen sensor connector.

  1. Remove the 6 nuts, exhaust manifold and gasket.



47. 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:
    0.7 mm (0.028 in.)
    HINT:
    The maximum allowable warpage of each installation surface is 0.3 mm (0.012 in.).
    If the warpage is greater than the maximum, replace the manifold.


48. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY LH
  1. Disconnect the heated oxygen sensor connector.

  1. Remove the 6 nuts, exhaust manifold and gasket.



49. INSPECT EXHAUST MANIFOLD SUB-ASSEMBLY LH


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

    Maximum warpage:
    0.7 mm (0.028 in.)
    HINT:
    The maximum allowable warpage of each installation surface is 0.3 mm (0.012 in.).
    If the warpage is greater than the maximum, replace the manifold.


50. REMOVE GENERATOR ASSEMBLY


Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Detach the clamp, and remove the bolt from the generator.

  1. Disconnect the generator connector.

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



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the nut, bolt and generator bracket.



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



51. REMOVE NO. 2 IDLER PULLEY SUB-ASSEMBLY
  1. Remove the bolt, plate and idler pulley.



52. REMOVE V-RIBBED BELT TENSIONER ASSEMBLY


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 5 bolts, then remove the V-ribbed belt tensioner assembly.



53. REMOVE WATER PUMP PULLEY


Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Using SST, hold the water pump pulley.

    SST
    09960-10010(09962-01000,09963-00700)
  1. Remove the 4 bolts and water pump pulley.



54. DISCONNECT NO. 1 WATER BY-PASS HOSE


55. DISCONNECT NO. 2 WATER BY-PASS HOSE


56. REMOVE REAR ENGINE COVER SUB-ASSEMBLY


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



57. REMOVE NO. 3 WATER BY-PASS PIPE
  1. Remove the bolt and water by-pass pipe.



58. REMOVE NO. 4 WATER BY-PASS PIPE
  1. Remove the bolt and water by-pass pipe.



59. REMOVE INTAKE AIR SURGE TANK SUB-ASSEMBLY
  1. Remove the 2 bolts and intake manifold stay.

  1. Remove the 4 bolts and 2 surge tank stays.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Using a 5 mm hexagon socket wrench, remove the 7 bolts, 2 nuts and gasket.

    HINT:
    Cover the intake manifold port to prevent foreign matter from entering it.


60. INSPECT INTAKE AIR SURGE TANK SUB-ASSEMBLY


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

    Maximum warpage:
    Specified Condition
    Condition
    When installed
    0.3 mm (0.011 in.)
    When not installed
    2.5 mm (0.098 in.)
    If the warpage is greater than the maximum, replace the surge tank.


61. REMOVE FUEL PRESSURE PULSATION DAMPER ASSEMBLY


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

  1. Pull out the fuel pressure pulsation damper from the fuel delivery pipe.



62. REMOVE FUEL DELIVERY PIPE SUB-ASSEMBLY


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the bolt and disconnect the No. 1 fuel hose from the cylinder head cover.

  1. Disconnect the 6 fuel injector connectors.

  1. Remove the 5 bolts and the fuel delivery pipe together with the 6 fuel injectors.

    NOTICE:
    Be careful not to drop the injectors when removing the fuel delivery pipe.


63. REMOVE FUEL INJECTOR ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Pull out the 6 fuel injectors from the delivery pipe.



    Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Remove the 6 insulators and 6 O-rings from the 6 fuel injectors.



64. REMOVE INTAKE MANIFOLD


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 6 bolts, 4 nuts, intake manifold and gasket.

    HINT:
    Cover the cylinder head intake port to prevent foreign matter from entering it.


65. INSPECT INTAKE MANIFOLD


Lexus Gs430, Gs300. Uzs190 Grs190.3Gr-Fe Engine Mechanical.Engine.Engine Assembly  Removal
  1. Surge tank side:

    1. Using a precision straightedge and feeler gauge, measure the surface contacting the cylinder head for warpage.

      Maximum warpage:
      0.1 mm (0.003 in.)
      If the warpage is greater than the maximum, replace the intake manifold.
  1. Cylinder head side:

    1. Using a precision straightedge and feeler gauge, measure the surface contacting the cylinder head for warpage.

      Maximum warpage:
      0.1 mm (0.003 in.)
      If the warpage is greater than the maximum, replace the intake manifold.


66. REMOVE KNOCK SENSOR


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



67. REMOVE ENGINE MOUNTING BRACKET RH
  1. Remove the 4 bolts and mounting bracket.



68. REMOVE ENGINE MOUNTING BRACKET LH
  1. Remove the 4 bolts and mounting bracket.



69. REMOVE OIL FILLER CAP SUB-ASSEMBLY


70. REMOVE IGNITION COIL ASSEMBLY
  1. Remove the 6 bolts and 6 ignition coils.



71. REMOVE ENGINE OIL LEVEL SENSOR
  1. Remove the 4 bolts, then remove the oil level sensor and gasket.



72. REMOVE OIL PRESSURE SWITCH ASSEMBLY


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using a 24 mm deep socket wrench, remove the oil pressure switch.



73. REMOVE ENGINE COOLANT TEMPERATURE SENSOR


Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using a 19 mm deep socket wrench, remove the temperature sensor.