2008 Lexus IS FFACTORY OEM SERVICE PROCEDURE

Automatic Transmission Unit: Reassembly

  1. BEARING POSITION 
    Fig 1: Identifying Bearing Position
    G05751110Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Bearing Position 

    BEARING POSITION

    Position Front Race Diameter - Inside/Outside Thrust Bearing Diameter Inside/Outside Rear Race Diameter Inside/Outside
    A - 36.2 mm (1.43 in.)/58.2 mm (2.30 in.) 44.0 mm (1.73 in.) / 62.0 mm (2.44 in.)
    B - 34.5 mm (1 36 in.) / 49.4 mm (1.94 in.) 36.6 mm (1.44 in.)/51.9 mm (2.04 in)
    C 46.5 mm (1.83 in.)/60.1 mm (2.37 in.) 47.0 mm (1.85 in.)/61.9 mm (2.44 in.) -
    D - 71 9 mm (2 83 in) / 85.6 mm (3.37 in.) 72.7 mm (2.86 in.) / 89.2 mm (3.51 in.)
    E 30.0 mm (1.18 in.) / 49.9 mm (1.96 in.) 31.0 mm (1.22 in.) /53.1 mm (2.09 in.) -
    F 31.5 mm (1.24 in.) /53.0 mm (2.09 in.) 28.7 mm (1.13 in.)/52.3 mm (2.06 in.) 28.7 mm (1.13 in.)/50.4 mm (1.98 in.)
    G - 30.5 mm (1.20 in.) / 55.7 mm (2.19 in.) 33.5 mm (1.32 in.) / 59.0 mm (2.32 in.)
    H - 58.9 mm (2.32 in) / 77.3 mm (3.04 in.) 62.0 mm (2.44 in.) / 82.5 mm (3.25 in.)
  2. INSTALL REAR OUTPUT SHAFT RADIAL BALL BEARING 
    1. Using SST, fully tap the bearing into the transmission case

      SST 09316-60011 (09316-00011,09316-00021) 

      Fig 2: Tapping Bearing Into Transmission Case
      G05751111Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using needle-nose pliers, install the snap ring.
  3. INSTALL REAR AUTOMATIC TRANSMISSION OIL SEAL 
    1. Coat the lip of a new oil seal with MP grease.
    2. Using SST and a hammer, tap the oil seal into the transmission case.

      SST 09214-76011 

      Standard oil seal depth: 3.3 to 3.7 mm (0.130 to 0.146 in.) 

  4. INSTALL BRAKE PLATE STOPPER SPRING 
    1. Install the 2 brake plate stopper springs.
  5. INSTALL NO. 2 BRAKE PISTON 
    1. Coat 3 new O-rings with ATF, and install them to the No. 2 brake piston.
      Fig 3: Tapping Oil Seal Into Transmission Case
      G04948710Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install the No. 2 brake piston to the transmission case.

      HINT.

      Make sure that the parking hole of the No 2 brake piston is on the bottom side by engaging the 2 brake piston protrusions to the transmission case spline grooves. (One groove is 3 places clockwise from the top, and the other is 2 places clockwise from the bottom as shown in the illustration).

    3. Install the No. 2 brake piston return spring to the transmission case.
      Fig 4: Identifying Parking Hole Of Brake Piston
      G04948711Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Set SST on the No. 2 brake piston return spring, tighten SST and compress the return spring.

      SST 09380-50010 

    5. Using SST, install the snap ring.

      SST 09350-30020 (09350-07070) 

      Fig 5: Compressing Return Spring With SST
      G04948684Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. SELECT NO. 2 BRAKE FLANGE 
    1. Measure length A (from the tip of the No 2 brake piston to the step in the transmission case) in the illustration.*1

      Standard length: 14.77 to 15.37 mm (0.581 to 0.605 in.) 

      Fig 6: Measuring Length From Tip Of Brake Piston To Step In Transmission Case
      G05751115Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Assemble the 4 No. 2 brake discs, 3 No. 2 brake plates, and No. 2 brake flange as shown in the illustration. Then, with a weight of 500 g (17 64 oz) or less placed on the flange, measure length B.*2

      Standard: 14.11 to 14.69 mm (0.556 to 0.578 in.) 

      Fig 7: Measuring Length
      G05751116Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Choose a No 2 brake flange from the table so that the value of measured length A minus length B (from steps *1 and *2) will be 0.52 to 0.82 mm (0 0205 to 0.0323 in.).

      Flange Thickness 

      FLANGE THICKNESS SPECIFICATION

      Mark Thickness
      0 1.95 to 2.05 mm (0.0768 to 0.0807 in.)
      1 2.05 to 2.15 mm (0.0807 to 0.0846 in.)
      2 2 15 to 2.25 mm (0.0846 to 0 0886 in.)
      3 2 25 to 2.35 mm (0.0886 to 0 0925 in.)
      4 2 35 to 2.45 mm (0 0925 to 0 0965 in.)
      5 2.45 to 2.55 mm (0 0965 to 0 100 in.)
      6 2 55 to 2 65 mm (0.100 to 0.104 in.)
      7 2.65 to 2.75 mm (0.104 to 0.108 in)
      8 2.75 to 2.85 mm (0.108 to 0.112 in)
  7. INSTALL DIRECT CLUTCH PISTON 
    1. Coat a new O-ring with ATF, and install it to the direct clutch drum sub-assembly
    2. Coat a new O-ring with ATF, and install it to the direct clutch piston
    3. Install the direct clutch piston to the direct clutch drum sub-assembly.
    4. Coat a new O-ring with ATF, and install it to the No 2 clutch balancer.
      Fig 8: Identifying Direct Clutch Piston To Direct Clutch Drum Sub-Assembly
      G04948715Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Install the direct clutch piston return spring sub-assembly and No. 2 clutch balancer to the direct clutch drum sub-assembly
      Fig 9: Identifying Direct Clutch Piston Return Spring Sub-Assembly
      G04948682Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Place SST on the No 2 clutch balancer and compress the return spring with a press.

      SST 09387-00020 

    7. Using SST, install the snap ring

      SST 09350-30020 (09350-07070) 

      Fig 10: Compressing Return Spring With Press
      G04948681Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. INSTALL NO. 2 CLUTCH DISC SET 
    1. Install the 6 plates, 6 discs and flange to the direct clutch drum

      Install in order: P - D - P - D - P - D - P - D - P - D - P - D - F 

      HINT.

      P = Plate

      D = Disc

      F = Flange

      NOTE: Before assembling new discs, soak them in ATF for at least 2 hours.
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