LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2008 >> IS 250 AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> A760H Automatic Transaxle >> Automatic Transmission Assembly >> Installation
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Automatic Transmission Assembly: Installation

  1. INSTALL TORQUE CONVERTER CLUTCH ASSEMBLY 
    1. Using calipers and a straight edge, measure dimension A between the transmission and the end surface of the drive plate (#1).
      Fig 1: Measuring Dimension A Between Transmission And End Surface Of Drive Plate
      G05294844Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Aligning the matchmarks on the transmission case and torque converter, engage the splines of the input shaft and turbine runner.
      Fig 2: Identifying Matchmarks On Transmission Case And Torque Converter
      G05317682Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Engage the splines of the stator shaft and stator while turning the torque converter.

      HINT:

      Turn the torque converter approximately 180°.

      Fig 3: Engaging Splines Of Stator Shaft And Stator
      G05317683Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Turn the torque converter and align the matchmarks on the torque converter and transmission case to engage the key of the oil pump drive gear into the slot on the torque converter.
      NOTE: Do not push on the torque converter when aligning the matchmarks.
      Fig 4: Identifying Matchmarks On Torque Converter And Transmission Case
      G05318285Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Using calipers and a straight edge, measure dimension B shown in the illustration and check that B is greater than A measured in step (#1).

      Standard: A + 1 mm (0.04 in.) or more 

      Fig 5: Measuring Dimension B
      G05294848Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSTALL TRANSMISSION OIL COOLER 
    1. Coat 2 new O-rings with ATF, and install them to the transmission oil cooler.
    2. Coat 2 new O-rings with ATF, and install them to the spacer.
      Fig 6: Identifying O-Rings
      G05288318Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Install the transmission oil cooler and spacer to the automatic transmission assembly with the 3 bolts.

      Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf) 

      Fig 7: Locating Bolts, Transmission Oil Cooler And Spacer
      G05288317Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSTALL TRANSMISSION CONTROL SHAFT LEVER LH 
    1. Install the transmission control shaft lever to the automatic transmission assembly with the nut.

      Torque: 16 N*m (163 kgf*cm, 12 ft.*lbf) 

      Fig 8: Locating Nut And Transmission Control Shaft Lever LH
      G05317677Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSTALL TRANSFER DYNAMIC DAMPER 
    1. Install the transfer dynamic damper to the automatic transmission assembly with the 2 bolts.

      Torque: 52 N*m (530 kgf*cm, 38 ft.*lbf) 

      Fig 9: Locating Bolts And Dynamic Damper
      G05294839Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSTALL REAR NO. 1 ENGINE MOUNTING INSULATOR 
    1. Install the rear No. 1 engine mounting insulator to the automatic transmission assembly with the 3 bolts.

      Torque: 60 N*m (612 kgf*cm, 44 ft.*lbf) 

      Fig 10: Locating Rear No. 1 Engine Mounting Insulator And Bolts
      G05294853Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install the engine rear mounting member to the engine mounting insulator rear No. 1 with the 3 bolts.

      Torque: 38 N*m (380 kgf*cm, 28 ft.*lbf) 

      Fig 11: Locating Bolts And Engine Rear Mounting Member
      G05317674Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSTALL AUTOMATIC WITH TRANSMISSION TRANSFER ASSEMBLY 
    1. Install the automatic transmission assembly to the engine with the 9 bolts.

      Torque: Bolts A and B 

      71 N*m (724 kgf*cm, 52 ft.*lbf) 

      Bolt C 

      37 N*m (377 kgf*cm, 27 ft.*lbf) 

      HINT:

      • Make sure that the mark is as shown in the illustration.
      • Do not use excess force to pry on the transmission assembly.
        Fig 12: Locating Automatic Transmission Assembly Bolts
        G05294855Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. INSTALL WATER BY-PASS HOSE 
    1. Tilt down the automatic transmission assembly.
      Fig 13: Identifying Tilt Down Automatic Transmission Assembly
      G05829804Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install the 2 water by-pass hoses to the transmission assembly.
    3. Install the water by-pass hose clamp with the bolt.

      Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf) 

      Fig 14: Locating Water By-Pass Hose Clamp And Bolt
      G05317672Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. INSTALL WIRE HARNESS 
    1. Install the wire harness clamps to the automatic transmission assembly with the 4 bolts.

      Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) 

      Fig 15: Locating Bolts And Wire Harness Clamps
      G05317671Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. CONNECT CONNECTOR 
    1. Connect the park/neutral position switch connector, transmission wire connector, and 2 transmission revolution sensor connectors.

      HINT:

      Push up the lever until the claw of the transmission wire connector makes a connection sound.

      Fig 16: Locating Park/Neutral Position Switch Connector, Transmission Wire Connector And Transmission Revolution Sensor Connectors
      G05317696Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. INSTALL ENGINE REAR MOUNTING MEMBER 
    1. Install the engine rear mounting member to the body with the 4 bolts.

      Torque: 26 N*m (265 kgf*cm, 19 ft.*lbf) 

      Fig 17: Locating Bolts And Engine Rear Mounting Member
      G05294831Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. INSTALL FLOOR SHIFT GEAR SHIFTING ROD SUB-ASSEMBLY 
    1. Temporarily tighten the floor shift gear shifting rod sub-assembly with the nut.
      Fig 18: Locating Nut And Floor Shift Gear Shifting Rod Sub-Assembly
      G05294829Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install the bolt and earth wire to the automatic transmission assembly.

      Torque: 5.4 N*m (55 kgf*cm, 48 in.*lbf) 

      Fig 19: Locating Bolt And Earth Wire
      G05317668Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. INSTALL NO. 1 EXHAUST PIPE SUPPORT BRACKET SUB-ASSEMBLY 
    1. Install the No. 1 exhaust pipe support bracket sub-assembly to the automatic transmission assembly with the 2 bolts.

      Torque: 43 N*m (438 kgf*cm, 32 ft.*lbf) 

      Fig 20: Locating Bolts And No. 1 Exhaust Pipe Support Bracket Sub-Assembly
      G05318268Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. INSTALL DRIVE PLATE & TORQUE CONVERTER CLUTCH SETTING BOLT 
    1. Install the 6 torque converter clutch setting bolts.

      Torque: 41 N*m (418 kgf*cm, 30 ft.*lbf) 

      HINT:

      First install the black-colored bolt and then the remaining 5 bolts.

      Fig 21: Locating Torque Converter Clutch Setting Bolts
      G05294827Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  14. INSTALL STARTER ASSEMBLY  (See INSTALLATION )
  15. INSTALL EXHAUST MANIFOLD SUB-ASSEMBLY LH  (See INSTALLATION )
  16. INSTALL FRONT PROPELLER SHAFT ASSEMBLY  (See INSTALLATION )
  17. INSTALL PROPELLER SHAFT WITH CENTER BEARING ASSEMBLY  (See INSTALLATION )
  18. INSTALL OUTSIDE AIR GUIDE PLATE RH  (See INSTALLATION )
  19. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 
    NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See INITIALIZATION ).
  20. ADJUST SHIFT LEVER POSITION  (See ADJUSTMENT  )
  21. INSPECT SHIFT LEVER POSITION  (See ON-VEHICLE INSPECTION  )
  22. INSTALL FRONT FLOOR NO. 1 HEAT INSULATOR  (See INSTALLATION )
  23. INSTALL FRONT EXHAUST PIPE ASSEMBLY  (See INSTALLATION )
  24. INSTALL OXYGEN SENSOR  (See INSTALLATION )
  25. INSTALL FRONT CENTER FLOOR BRACE  (See INSTALLATION )
  26. INSTALL NO. 1 REAR FLOOR PANEL BRACE  (See INSTALLATION )
  27. ADD COOLANT 

    (See ON-VEHICLE INSPECTION )

  28. ADD AUTOMATIC TRANSMISSION FLUID 

    (See ADJUSTMENT  )

  29. ADJUST COOLANT 

    (See ON-VEHICLE INSPECTION )

  30. CHECK FOR ENGINE COOLANT LEAKS  (See ON-VEHICLE INSPECTION )
  31. CHECK FOR EXHAUST GAS LEAKS  (See INSTALLATION )
  32. INSTALL ENGINE UNDER COVER 
  33. INSTALL ENGINE ROOM SIDE COVER LH  (See INSTALLATION )
  34. INSTALL COOL AIR INTAKE DUCT SEAL  (See INSTALLATION )
  35. RESET MEMORY 

    (See INITIALIZATION  )