Automatic Transmission Assembly Removal

Transmission. Lexus Gs430, Gs300. Uzs190 Grs190
A960E Automatic Transmission. Lexus Gs430, Gs300. Uzs190 Grs190

  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

  2. REMOVE ENGINE UNDER COVER

  3. REMOVE ENGINE UNDER COVER NO.2

  4. DRAIN COOLANT

  5. DRAIN AUTOMATIC TRANSMISSION FLUID

  6. REMOVE ENGINE UNDER COVER AIR GUIDE BRACKET

  7. REMOVE FRONT EXHAUST PIPE ASSEMBLY

  8. REMOVE PROPELLER W/CENTER BEARING SHAFT ASSEMBLY

  9. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY LH

  10. REMOVE STARTER ASSEMBLY

  11. REMOVE DRIVE PLATE & TORQUE CONVERTER CLUTCH SETTING BOLT

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

  13. SEPARATE FLOOR SHIFT GEAR SHIFTING ROD SUB-ASSEMBLY

  14. SUPPORT AUTOMATIC TRANSMISSION ASSEMBLY

  15. REMOVE ENGINE REAR MOUNTING MEMBER

  16. SEPARATE CONNECTOR

  17. SEPARATE WIRE HARNESS

  18. SEPARATE WATER BY-PASS HOSE

  19. REMOVE AUTOMATIC TRANSMISSION ASSEMBLY

  20. REMOVE ENGINE MOUNTING INSULATOR REAR NO.1

  21. REMOVE TRANSMISSION CONTROL SHAFT LEVER RH

  22. REMOVE TRANSMISSION OIL COOLER

  23. REMOVE TORQUE CONVERTER CLUTCH ASSEMBLY

  24. INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY

Automatic Transmission Assembly -- Removal



1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL


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



4. DRAIN COOLANT
(Click here)


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

  1. Install a new gasket and the drain plug.

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


6. REMOVE ENGINE UNDER COVER AIR GUIDE BRACKET


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 2 bolts and engine under cover air guide bracket.



7. REMOVE FRONT EXHAUST PIPE ASSEMBLY
(Click here)


8. REMOVE PROPELLER W/CENTER BEARING SHAFT ASSEMBLY
(Click here)


9. REMOVE EXHAUST MANIFOLD SUB-ASSEMBLY LH
(Click here)


10. REMOVE STARTER ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190.A960E Automatic Transmission.Electronic Controlled Automatic Transmission System.Automatic Transmission Assembly  Removal
  1. Disconnect the starter connector.

  1. Detach the terminal cap.

  1. Remove the nut and disconnect the starter cable.

  1. Remove the 2 bolts and starter.



11. REMOVE DRIVE PLATE & TORQUE CONVERTER CLUTCH SETTING BOLT


    Lexus Gs430, Gs300. Uzs190 Grs190.A960E Automatic Transmission.Electronic Controlled Automatic Transmission System.Automatic Transmission Assembly  Removal
  1. Turn the crankshaft to gain access to each bolt.

  1. Hold the crankshaft pulley nut with a wrench and remove the 6 torque converter clutch setting bolts.



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


    Lexus Gs430, Gs300. Uzs190 Grs190.A960E Automatic Transmission.Electronic Controlled Automatic Transmission System.Automatic Transmission Assembly  Removal
  1. Remove the 2 bolts and exhaust pipe No.1 support bracket sub-assembly from the automatic transmission assembly.



13. SEPARATE 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.



14. SUPPORT AUTOMATIC TRANSMISSION ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Support the automatic transmission assembly with a transmission jack.



15. REMOVE ENGINE REAR MOUNTING MEMBER


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



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 4 nuts and engine rear mounting member from the automatic transmission assembly.



16. SEPARATE CONNECTOR


    Lexus Gs430, Gs300. Uzs190 Grs190.A960E Automatic Transmission.Electronic Controlled Automatic Transmission System.Automatic Transmission Assembly  Removal
  1. Tilt down the automatic transmission assembly.



    Lexus Gs430, Gs300. Uzs190 Grs190.A960E Automatic Transmission.Electronic Controlled Automatic Transmission System.Automatic Transmission Assembly  Removal
  1. Disconnect the neutral start switch connector, transmission wire connector and 2 transmission revolution sensor connectors.

    HINT:
    Disengage the claw, press down the lever, and then disconnect the transmission wire connector.


17. SEPARATE WIRE HARNESS


    Lexus Gs430, Gs300. Uzs190 Grs190.A960E Automatic Transmission.Electronic Controlled Automatic Transmission System.Automatic Transmission Assembly  Removal
  1. Remove the 2 bolts and separate the wire harness clamps from the automatic transmission assembly.



18. SEPARATE WATER BY-PASS HOSE


    Lexus Gs430, Gs300. Uzs190 Grs190.A960E Automatic Transmission.Electronic Controlled Automatic Transmission System.Automatic Transmission Assembly  Removal
  1. Remove the bolt and water by-pass hose clamp.

  1. Separate the 2 water by-pass hoses from the transmission oil cooler.



19. REMOVE AUTOMATIC TRANSMISSION ASSEMBLY


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



20. REMOVE ENGINE MOUNTING INSULATOR REAR NO.1


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 4 bolts and engine mounting insulator rear No.1 from the automatic transmission assembly.



21. REMOVE TRANSMISSION CONTROL SHAFT LEVER RH


    Lexus Gs430, Gs300. Uzs190 Grs190.A960E Automatic Transmission.Electronic Controlled Automatic Transmission System.Automatic Transmission Assembly  Removal
  1. Remove the nut and transmission control shaft lever RH from the neutral start switch assembly.



22. REMOVE TRANSMISSION OIL COOLER


    Lexus Gs430, Gs300. Uzs190 Grs190.A960E Automatic Transmission.Electronic Controlled Automatic Transmission System.Automatic Transmission Assembly  Removal
  1. Remove the 3 bolts, transmission oil cooler from the automatic transmission assembly.

  1. Remove the 2 O-ring.



23. REMOVE TORQUE CONVERTER CLUTCH ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190.A960E Automatic Transmission.Electronic Controlled Automatic Transmission System.Automatic Transmission Assembly  Removal
  1. Put matchmarks on the torque converter and transmission case.

  1. Remove the torque converter from the automatic transmission assembly.



24. INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190.A960E Automatic Transmission.Electronic Controlled Automatic Transmission System.Automatic Transmission Assembly  Removal
  1. Inspect the one-way clutch.

    1. Install SST so that it fits in a notch of the converter hub and a notch of the outer race of the one-way clutch.

      SST
      09350-32014(09351-32010,09351-32020)
    2. Press on the serrations of the startor with a finger and rotate it.
      Check that it rotates smoothly when turned clockwise and locks up when turned counterclockwise.

      SST
      09350-32014(09351-32010,09351-32020)
      If necessary, clean the converter and retest the one-way clutch.
      Replace the converter if the one-way clutch still fails the test.


    Lexus Gs430, Gs300. Uzs190 Grs190.A960E Automatic Transmission.Electronic Controlled Automatic Transmission System.Automatic Transmission Assembly  Removal
  1. Determine the condition of the torque converter clutch assembly.

    1. If the inspection result of the torque converter clutch assembly meets the following item, replace the torque converter clutch.

      Malfunction Item:
      Any metallic sound is heard from the torque converter clutch during stall test or when the shift lever is in the N position.
      The one-way clutch is free or locked in both directions.
      Fine powder exceeding the sample limit is identified in ATF. (See the sample.)
      HINT:
      The sample shows approx. 0.25 liters (0.26 US qts, 0.22 lmp. qts) of ATF that is taken out from the removed torque converter clutch.
  1. Replace the ATF in the torque converter clutch.

    1. If the ATF is discolored and/or has a foul odor, completely stir the ATF in the torque converter clutch and drain it with the installation face up.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Clean and check the oil cooler and oil pipe line.

    1. If the torque converter clutch is inspected or the ATF is changed, clean the oil cooler and oil pipe line.

      HINT:
      1. Spray compressed air of 196 kpa (2 kgf/cm, 28 psi) from the inlet hose.
      2. If a lot of fire powder is found in the ATF, add new ATF using a bucket pump and clean it again.
    2. If the ATF is cloudy, inspect the oil cooler (radiator).



    Lexus Gs430, Gs300. Uzs190 Grs190.A960E Automatic Transmission.Electronic Controlled Automatic Transmission System.Automatic Transmission Assembly  Removal
  1. Prevent deformation of the torque converter clutch.

    1. When there is any damage to the end of the bolt for the torque converter clutch and to the bottom of the bolt hole, replace the bolt and the torque converter clutch.

    2. All of the bolts have to be of the same length.