Timing Belt Removal

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

  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

  2. REMOVE COOL AIR INTAKE DUCT SEAL

  3. REMOVE ENGINE ROOM SIDE COVER RH

  4. REMOVE ENGINE ROOM SIDE COVER LH

  5. REMOVE NO. 1 AIR CLEANER INLET

  6. DRAIN ENGINE COOLANT

  7. REMOVE V-BANK COVER

  8. REMOVE INTAKE AIR CONNECTOR PIPE

  9. REMOVE ENGINE UNDER COVER

  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 AIR CLEANER ASSEMBLY

  15. REMOVE RADIATOR ASSEMBLY

  16. REMOVE V-RIBBED BELT

  17. REMOVE GENERATOR ASSEMBLY

  18. REMOVE NO. 1 IDLER PULLEY BRACKET SUB-ASSEMBLY

  19. REMOVE COMPRESSOR ASSEMBLY

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

  21. REMOVE OIL COOLER PIPE

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

  23. REMOVE NO. 2 IDLER PULLEY SUB-ASSEMBLY

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

  25. REMOVE V-RIBBED BELT TENSIONER ASSEMBLY

  26. REMOVE IDLER PULLEY ASSEMBLY

  27. REMOVE CRANKSHAFT DAMPER SUB-ASSEMBLY

  28. REMOVE NO. 1 TIMING BELT COVER

  29. REMOVE NO. 1 CRANKSHAFT POSITION SENSOR PLATE

  30. REMOVE TIMING BELT

Timing Belt -- Removal



1. 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.


2. REMOVE COOL AIR INTAKE DUCT SEAL


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



3. REMOVE ENGINE ROOM SIDE COVER RH


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



4. REMOVE ENGINE ROOM SIDE COVER LH


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



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



6. 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.Timing Belt  Removal



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



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 ENGINE UNDER COVER


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

  1. Remove the 3 bolts and air cleaner assembly.



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



16. 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.


17. 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.



18. REMOVE NO. 1 IDLER PULLEY BRACKET SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the bolt, pulley plate and idler pulley.



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



19. REMOVE COMPRESSOR ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 3 bolts, nut, stay and wire bracket, and disconnect the cooler compressor.

    HINT:
    It is not necessary to completely remove the compressor. With the low-pressure and high-pressure hoses connected to the compressor, hang the compressor (with the magnetic clutch) on the vehicle body with a rope.


20. 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.



21. REMOVE OIL COOLER PIPE


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



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


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



23. REMOVE NO. 2 IDLER PULLEY SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the pulley bolt, cover plate and idler pulley.



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


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



25. REMOVE V-RIBBED BELT TENSIONER ASSEMBLY


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



26. REMOVE IDLER PULLEY ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 2 bolts, 2 nuts and idler pulley.



27. REMOVE CRANKSHAFT DAMPER SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Timing Belt  Removal
  1. Using SST, remove the damper bolt.

    SST
    09213-70011
    09330-00021


    Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Timing Belt  Removal
  1. Using SST, remove the damper.

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


28. REMOVE NO. 1 TIMING BELT COVER
  1. Remove the 4 bolts and cover.



29. REMOVE NO. 1 CRANKSHAFT POSITION SENSOR PLATE


30. 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 Engine Mechanical.Engine.Timing Belt  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
    3. 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°).


    4. Lexus Gs430, Gs300. Uzs190 Grs190.3Uz-Fe Engine Mechanical.Engine.Timing Belt  Removal
    5. 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 Engine Mechanical.Engine.Timing Belt  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.