Clutch Drum And Input Shaft Assembly Disassembly

Transmission. Lexus Gs430, Gs300. Uzs190 Grs190
A760E Automatic Transmission. Lexus Gs430, Gs300. Uzs190 Grs190

  1. FIX CLUTCH DRUM AND INPUT SHAFT

  2. REMOVE REVERSE CLUTCH HUB SUB-ASSEMBLY

  3. REMOVE REVERSE CLUTCH REACTION SLEEVE

  4. REMOVE REAR CLUTCH DISC

  5. INSPECT REAR CLUTCH DISC

  6. INSPECT REVERSE CLUTCH HUB SUB-ASSEMBLY

  7. REMOVE FORWARD CLUTCH HUB SUB-ASSEMBLY

  8. INSPECT FORWARD CLUTCH HUB SUB-ASSEMBLY

  9. REMOVE COAST CLUTCH HUB SUB-ASSEMBLY

  10. INSPECT UNDERDRIVE 1 WAY CLUTCH ASSEMBLY

  11. REMOVE UNDERDRIVE 1 WAY CLUTCH ASSEMBLY

  12. REMOVE FORWARD CLUTCH HUB CLUTCH DISC

  13. INSPECT FORWARD CLUTCH HUB CLUTCH DISC

  14. REMOVE COAST CLUTCH DISC

  15. INSPECT COAST CLUTCH DISC

  16. REMOVE INPUT SHAFT

  17. REMOVE INPUT SHAFT OIL SEAL RING

  18. REMOVE CLUTCH BALANCER NO.1

  19. INSPECT FORWARD CLUTCH RETURN SPRING SUB-ASSEMBLY

  20. REMOVE FORWARD CLUTCH PISTON SUB-ASSEMBLY

  21. REMOVE REVERSE CLUTCH FLANGE

  22. REMOVE DIRECT CLUTCH DISC

  23. INSPECT DIRECT CLUTCH DISC

  24. REMOVE CLUTCH BALANCER NO.3

  25. REMOVE REVERSE CLUTCH RETURN SPRING SUB-ASSEMBLY

  26. INSPECT REVERSE CLUTCH RETURN SPRING SUB-ASSEMBLY

  27. REMOVE REVERSE CLUTCH PISTON SUB-ASSEMBLY

  28. REMOVE DIRECT CLUTCH PISTON SUB-ASSEMBLY

  29. INSPECT DIRECT CLUTCH RETURN SPRING SUB-ASSEMBLY

Clutch Drum And Input Shaft Assembly -- Disassembly



1. FIX CLUTCH DRUM AND INPUT SHAFT


    Lexus Gs430, Gs300. Uzs190 Grs190.A760E Automatic Transmission.Electronic Controlled Automatic Transmission System.Clutch Drum And Input Shaft Assembly  Disassembly
  1. Place the oil pump onto the torque converter clutch, and then place the clutch drum and input shaft onto the oil pump.



2. REMOVE REVERSE CLUTCH HUB SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using a screwdriver, remove the snap ring from the clutch drum and input shaft.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the reverse clutch hub sub-assembly with the reverse clutch reaction sleeve, the clutch cushion plate, the reverse clutch flange, the 5 rear clutch discs, and the 4 clutch plates from the forward clutch hub.



3. REMOVE REVERSE CLUTCH REACTION SLEEVE


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the reverse clutch reaction sleeve from the reverse clutch hub sub-assembly.



4. REMOVE REAR CLUTCH DISC


    Lexus Gs430, Gs300. Uzs190 Grs190.A760E Automatic Transmission.Electronic Controlled Automatic Transmission System.Clutch Drum And Input Shaft Assembly  Disassembly
  1. Remove the clutch cushion plate, the reverse clutch flange, the 4 plates and the 5 discs from the reverse clutch hub.



5. INSPECT REAR CLUTCH DISC


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Check whether the sliding surfaces of the discs, the plates, and the flange are worn or burnt.
    If necessary, replace them.

    NOTICE:
    1. If the linings of the discs are peeled off or discolored, or even a part of the printed numbers is damaged, replace all discs.
    1. Before assembling new discs, soak them in ATF for at least 15 minutes.


6. INSPECT REVERSE CLUTCH HUB SUB-ASSEMBLY


  1. Inspect the pack clearance of the reverse clutch hub sub-assembly.



    1. Using a dial indicator, measure the reverse clutch piston stroke (distance A) and the moving distance (distance B) of the reverse clutch flange at both ends across the diameter while blowing air (392 kPa, 4 kgf/cm2, 57 psi) from the oil hole as shown in the illustration, and calculate the average.


      Lexus Gs430, Gs300. Uzs190 Grs190.A760E Automatic Transmission.Electronic Controlled Automatic Transmission System.Clutch Drum And Input Shaft Assembly  Disassembly

      HINT:
      Piston stroke A = 1.05 to 2.15 mm
      Flange moving distance B = 0.72 to 1.08 mm
      Pack clearance = Piston stroke A - Flange moving distance B - 0.06
      Pack Clearance:
      0.5 to 0.8 mm (0.020 to 0.031 in.)
      NOTICE:
      Install a selective flange (t = 3.3 mm) when measuring the moving distance. (shaded area in the illustration)
    2. If the pack clearance is outside the standard, select and install a clutch flange that brings the pack clearance within the standard.

      HINT:
      There are 11 types of flanges that can be used to adjust the pack clearance. Select the one with the most appropriate thickness.
      Flange thickness:
      No.
      Thickness
      0
      2.8 mm (0.110 in.)
      1
      2.9 mm (0.114 in.)
      2
      3.0 mm (0.118 in.)
      3
      3.1 mm (0.122 in.)
      4
      3.2 mm (0.126 in.)
      5
      3.3 mm (0.130 in.)
      6
      3.4 mm (0.134 in.)
      7
      3.5 mm (0.138 in.)
      8
      3.6 mm (0.142 in.)
      9
      3.7 mm (0.146 in.)
      A
      3.8 mm (0.150 in.)


7. REMOVE FORWARD CLUTCH HUB SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the forward clutch hub sub-assembly and thrust washer from the clutch drum assembly.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 2 thrust needle roller bearings and thrust bearing race No.3 from the forward clutch hub sub-assembly.



8. INSPECT FORWARD CLUTCH HUB SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using a dial indicator, measure the inside diameter of the forward clutch hub bushing.

    Standard inside diameter:
    26.037 to 26.062 mm (1.0251 to 1.0261 in.)
    If the inside diameter is greater than the standard inside diameter, replace the forward clutch hub.


9. REMOVE COAST CLUTCH HUB SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the coast clutch hub sub-assembly from the clutch drum sub-assembly.



10. INSPECT UNDERDRIVE 1 WAY CLUTCH ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Hold the coast clutch hub and turn the 1 way clutch assembly.

  1. Check that the 1 way clutch assembly turns freely counterclockwise and locks clockwise.
    If there is a problem with the 1 way clutch, replace it.



11. REMOVE UNDERDRIVE 1 WAY CLUTCH ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the underdrive 1 way clutch assembly, clutch hub thrust washer and the thrust bearing race from the coast clutch hub.



12. REMOVE FORWARD CLUTCH HUB CLUTCH DISC


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using a screwdriver, remove the hole snap ring.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the flange, cushion plate, 4 discs and 4 plates from the input shaft.



13. INSPECT FORWARD CLUTCH HUB CLUTCH DISC


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Check whether the sliding surfaces of the discs, the plates, and the flange are worn or burnt.
    If necessary, replace them.

    NOTICE:
    1. If the linings of the discs are peeled off or discolored, or even a part of the printed numbers is damaged, replace all discs.
    1. Before assembling new discs, soak them in ATF for at least 15 minutes.


14. REMOVE COAST CLUTCH DISC


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using a screwdriver, remove the hole snap ring.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the flange, the 3 discs and the 3 plates from the input shaft.



15. INSPECT COAST CLUTCH DISC


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Check whether the sliding surfaces of the discs, the plates, and the flange are worn or burnt.
    If necessary, replace them.

    NOTICE:
    1. If the linings of the discs are peeled off or discolored, or even a part of the printed numbers is damaged, replace all discs.
    1. Before assembling new discs, soak them in ATF for at least 15 minutes.


16. REMOVE INPUT SHAFT


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the thrust needle roller bearing from the input shaft.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the input shaft from the clutch drum.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the thrust needle roller bearing and thrust bearing race from the clutch drum.



17. REMOVE INPUT SHAFT OIL SEAL RING


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 4 oil seal rings from the input shaft.



18. REMOVE CLUTCH BALANCER NO.1


    Lexus Gs430, Gs300. Uzs190 Grs190.A760E Automatic Transmission.Electronic Controlled Automatic Transmission System.Clutch Drum And Input Shaft Assembly  Disassembly
  1. Place SST on the clutch balancer No.1, and compress the return spring with a press.

    SST
    09350-30020(09350-07040)
  1. Using SST and press, remove the snap ring.

    SST
    09350-30020(09350-07070)


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the clutch balancer No.1 and the forward clutch return spring from the input shaft.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the O-ring from the clutch balancer No.1.



19. INSPECT FORWARD CLUTCH RETURN SPRING SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using vernier calipers, measure the free length of the spring together with the spring seat.

    Standard free length:
    24.64 mm (0.9701 in.)
    If the free length is shorter than the standard free length, replace the clutch return spring sub-assembly.


20. REMOVE FORWARD CLUTCH PISTON SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Holding the forward clutch piston by hand, apply compressed air (392 kPa, 4.0 kgf/cm2, 57 psi) to the input shaft to remove the forward clutch piston.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the coast clutch piston from the forward clutch piston.

  1. Remove the O-ring from the forward clutch piston.



21. REMOVE REVERSE CLUTCH FLANGE


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the reverse clutch flange from the clutch drum assembly.



22. REMOVE DIRECT CLUTCH DISC


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using a screwdriver, remove the 2 hole snap rings from the clutch drum assembly.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the reverse clutch flange, the 5 plates and the 4 discs from the clutch drum assembly.



23. INSPECT DIRECT CLUTCH DISC


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Check whether the sliding surfaces of the discs, the plates, and the flange are worn or burnt.
    If necessary, replace them.

    NOTICE:
    1. If the linings of the discs are peeled off or discolored, or even a part of the printed numbers is damaged, replace all discs.
    1. Before assembling new discs, soak them in ATF for at least 15 minutes.


24. REMOVE CLUTCH BALANCER NO.3


    Lexus Gs430, Gs300. Uzs190 Grs190.A760E Automatic Transmission.Electronic Controlled Automatic Transmission System.Clutch Drum And Input Shaft Assembly  Disassembly
  1. Place SST on the clutch balancer No.3, and compress the return spring with a press.

    SST
    09387-00070
  1. Using SST and press, remove the snap ring.

    SST
    09350-30020(09350-07070)
  1. Remove the clutch balancer No.3.



25. REMOVE REVERSE CLUTCH RETURN SPRING SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the reverse clutch return spring and the O-ring from the reverse clutch piston.



26. INSPECT REVERSE CLUTCH RETURN SPRING SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using vernier calipers, measure the free length of the spring together with the spring seat.

    Standard free length:
    21.04 mm (0.828 in.)
    If the free length is shorter than the standard free length, replace the clutch return spring sub-assembly.


27. REMOVE REVERSE CLUTCH PISTON SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the reverse clutch piston sub-assembly from the clutch drum sub-assembly.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the O-ring from the reverse clutch piston sub-assembly.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the O-ring from the clutch drum sub-assembly.



28. REMOVE DIRECT CLUTCH PISTON SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190.A760E Automatic Transmission.Electronic Controlled Automatic Transmission System.Clutch Drum And Input Shaft Assembly  Disassembly
  1. Place SST on the direct clutch piston, and compress the return spring with a press.

    SST
    09320-89010
  1. Using SST and press, remove the snap ring.

    SST
    09350-30020(09350-07070)


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using 2 screwdrivers, remove the direct clutch piston sub-assembly from the clutch drum.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the clutch balancer No.2 and the direct clutch return spring sub-assembly from the direct clutch piston sub-assembly.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Remove the 2 O-rings from the direct clutch piston sub-assembly.



29. INSPECT DIRECT CLUTCH RETURN SPRING SUB-ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Using vernier calipers, measure the free length of the spring together with the spring seat.

    Standard free length:
    19.51 mm (0.768 in.)
    If the free length is shorter than the standard free length, replace the clutch return spring sub-assembly.