2008 Lexus LS 460LFACTORY OEM SERVICE PROCEDURE

Automatic Transmission Unit: Disassembly

  1. REMOVE TRANSMISSION CONTROL SHAFT LEVER RH 
    1. Remove the nut and transmission control shaft lever.
      Fig 1: Locating Transmission Control Shaft Lever Nuts
      G04948614Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. REMOVE PARK/NEUTRAL POSITION SWITCH ASSEMBLY 
    1. Using a screwdriver, bend the tabs of the lock washer.
    2. Remove the nut and lock washer.
    3. Remove the bolt and park/neutral position switch.
      Fig 2: Identifying Park/Neutral Position Switch Assembly
      G04948615Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. REMOVE OIL COOLER TUBE UNION 
    1. Remove the 2 oil cooler tube unions.
    2. Remove the O-rings from the oil cooler tube unions.
      Fig 3: Removing Oil Cooler Tube Union
      G04948616Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. REMOVE NO. 1 BREATHER PLUG 
    Fig 4: Locating No. 1 Breather Plug
    G04948617Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. REMOVE AUTOMATIC TRANSMISSION FLANGE YOKE ASSEMBLY 
    1. Using SST and a hammer, loosen the staked part of the nut.

      SST 09930-00010 

      Fig 5: Loosening Staked Part Of Nut
      G04948618Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using SST and a 30 mm socket wrench, remove the nut.

      SST 09330-00021, 09950-30012 (09955-03040) 

    3. Remove SST.
    4. Tap the flange yoke with a plastic-faced hammer to remove it.
    5. Remove the 2 output shaft rear bearing No. 1 spacers and rear cover sleeve.
      Fig 6: Removing Output Shaft Rear Bearing No. 1 Spacers And Rear Cover Sleeve
      G04948619Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Using a screwdriver, pry out the oil seal from the flange yoke.
      Fig 7: Identifying Oil Seal Of Flange Yoke
      G04948620Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. REMOVE AUTOMATIC TRANSMISSION OIL PAN SUB-ASSEMBLY 
    NOTE: Do not turn the transmission over as this will contaminate the valve body with foreign matter located at the bottom of the pan.
    1. Remove the overflow plug and gasket.
    2. Remove the drain plug and gasket.
    3. Remove the 9 bolts, oil pan and gasket.
      Fig 8: Identifying Automatic Transmission Oil Pan Bolts
      G04948406Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Examine the particles in the pan.
      1. Remove the magnets from the oil pan. Use the removed magnets to collect any steel chips. Look carefully at the chips and particles in the pan and on the magnet to anticipate the type of wear which might be found in the transmission. Steel (magnetic): bearing, gear and plate wear Brass (non-magnetic): bush wear
        Fig 9: Inspecting Magnets Particles In Pan
        G04831117Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. REMOVE VALVE BODY OIL STRAINER ASSEMBLY 
    1. Remove the 4 bolts and valve body oil strainer from the valve body.
      Fig 10: Locating Valve Body Oil Strainer And Bolts
      G04948408Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the O-ring from the valve body oil strainer.
      Fig 11: Identifying O-Ring And Oil Strainer
      G04948409Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. REMOVE TRANSMISSION VALVE BODY ASSEMBLY 
    1. Remove the bolt, lock plate and ATF temperature sensor.
    2. Remove the O-ring from the ATF temperature sensor.
    3. Disconnect the 8 connectors from the solenoid valves.
      Fig 12: Locating ATF Temperature Sensor, Oil Pressure Switch And Solenoid Valves Connectors
      G04948410Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the bolt, detent spring cover and detent spring.
      Fig 13: Locating Detent Spring And Bolt
      G04948411Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Remove the 17 bolts.
    6. Remove the valve body.
    7. Disconnect the lever pin from the manual valve.
      Fig 14: Locating Valve Body And Bolts
      G04948412Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. REMOVE CHECK BALL BODY 
    1. Remove the check ball body and spring.
      Fig 15: Identifying Check Ball Body And Spring
      G04948413Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. REMOVE TRANSMISSION WIRE 
    1. Disconnect the 3 connectors from the 3 speed sensors.
      Fig 16: Locating Speed Sensor Connectors
      G04948439Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the bolt and pull out the transmission wire.
    3. Remove the O-ring from the transmission wire connector.
      Fig 17: Locating Transmission Wire Connector And Bolt
      G04948441Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. REMOVE SPEED SENSOR 
    1. Remove the 2 bolts and 2 speed sensors NC3 and SP2.
    2. Using a T30 "TORX" wrench, remove the bolt and speed sensor NT.
    3. Remove the O-ring from the speed sensor NT.
      Fig 18: Locating Speed Sensor Bolts
      G04948631Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. REMOVE AUTOMATIC TRANSMISSION CASE PLUG 
    1. Remove the plug and O-ring.
      Fig 19: Locating Automatic Transmission Case Plug
      G04948632Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. REMOVE PARKING LOCK PAWL BRACKET 
    1. Remove the 3 bolts and parking lock pawl bracket.
      Fig 20: Locating Parking Lock Pawl Bracket Bolts
      G04948633Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  14. REMOVE PARKING LOCK ROD SUB-ASSEMBLY 
    1. Disconnect the parking lock rod from the manual valve lever.
      Fig 21: Removing Parking Lock Rod Sub-Assembly
      G04948634Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  15. REMOVE PARKING LOCK PAWL SHAFT 
    1. Pull out the parking lock pawl shaft from the front side, then remove the lock pawl and spring.
    2. Remove the E-ring from the shaft.
      Fig 22: Pulling Parking Lock Pawl Shaft
      G04948635Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  16. REMOVE MANUAL VALVE LEVER SUB-ASSEMBLY 
    1. Using a screwdriver and hammer, cut off the spacer and remove it from the shaft.
      Fig 23: Removing Manual Valve Lever Sub-Assembly
      G04948636Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using a pin punch and hammer, tap out the spring pin.

      HINT:

      Slowly tap out the spring pin so that it does not fall into the transmission case.

    3. Pull the manual valve lever shaft out through the case, and remove the manual valve lever.
      Fig 24: Tapping Spring Pin
      G04948637Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  17. REMOVE MANUAL VALVE LEVER SHAFT OIL SEAL 
    1. Using a screwdriver, pry out the oil seal.
      Fig 25: Prying Out Oil Seal
      G04948638Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  18. REMOVE OIL PUMP ASSEMBLY 
    1. Remove the 11 bolts from the transmission case.
      Fig 26: Locating Transmission Oil Pump Assembly Bolts
      G04948639Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Pull out the oil pump.
      NOTE: Do not damage the oil pump.
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