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Home >> Lexus >> 2004 >> SC 430 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission (On-Vehicle Service) >> Transmission Valve Body ASSY >> Replacement

Transmission Valve Body ASSY: Replacement

CAUTION: When working with FIPG material, you must observe the following items:  
  • Using a razor blade and gasket scraper, remove all the old FIPG material from the gasket surfaces. 
  • Thoroughly clean all components to remove all the loose material. 
  • Clean both sealing surfaces with a non-remove solvent. 
  • Apply FIPG in an approx. 1 mm (0.04 in) wide bead along the sealing surface. 
  • Parts must be assembled within 10 minutes of application. Otherwise, the FIPG material must be removed and reapplied. 
  1. DRAIN AUTOMATIC TRANSMISSION FLUID 
    1. Remove the drain plug, gasket and drain ATF.
    2. Install a new gasket and drain plug.

      Torque: 20 N.m (205 kgf.cm, 15 ft.lbf) 

  2. REMOVE AUTOMATIC TRANSMISSION OIL PAN SUB-ASSY 
    NOTE: Some fluid will remain in the oil pan. 
    1. Remove the 19 bolts.
      Fig 1: Removing Oil Pan Bolts
      G00925269Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install the blade of SST between the transmission case on oil pan, cut off applied sealer, and remove the oil pan.

      SST 09032-00100

      NOTE: When removing the oil pan, careful not to damage the oil pan flange. 
      Fig 2: Installing Blade Of SST Between Transmission Case On Oil Pan
      G00925270Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Examine particles in pan.
      1. Remove the magnets and use them to collect steel particles. Carefully look at the foreign matter and particles in the pan and on the magnets to anticipate the type of wear you will find in the transmission.

      Steel (magnetic) ... bearing, gear and clutch plate wear

      Brass (non-magnetic) ... bushing wear

      Fig 3: Checking Particles In Pan
      G00925271Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. REMOVE VALVE BODY OIL STRAINER ASSY 
    1. Remove the 4 bolts and oil strainer.
      NOTE: Be careful as some fluid will come out of the oil strainer. 
      Fig 4: Removing Oil Strainer Bolts
      G00925272Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 3 gaskets from the oil strainer.
      Fig 5: Removing Gaskets From Oil Strainer
      G00925273Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. SEPARATE TRANSMISSION WIRE 
    1. Disconnect the ATF temperature sensor.
    2. Remove the bolt and clamp.
    3. Disconnect the 7 connectors from the solenoid valves.
      Fig 6: Removing Bolt & Clamp
      G00925274Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. REMOVE TRANSMISSION VALVE BODY ASSY 
    1. Remove the 20 bolts and valve body.
      Fig 7: Locating Valve Body Bolts
      G00925275Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the check ball body and spring.
      NOTE: Do not drop the check body and spring. 
      Fig 8: Removing Check Ball Body Spring
      G00925276Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the 4 bolts and shift solenoid valve No. 1, No. 2, No. 3 and No. 4.
    4. Remove the bolt, lock plate and shift solenoid valve SLN.
    5. Remove the 2 O-rings from shift solenoid valve No. 2 and No. 4.
    6. Remove the bolt, lock plate and shift solenoid valve SLU and SLT.
      Fig 9: Identifying Valve Body Shift Solenoid Valves
      G00925277Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSTALL TRANSMISSION VALVE BODY ASSY 
    1. Install the shift solenoid valve SLU and SLT and the lock plate with the bolt.

      Torque: 6.4 N.m (65 kgf.cm, 56 in.lbf) 

    2. Coat 2 new O-rings with ATF.
    3. Install the 2 O-rings to the shift solenoid valve No. 2 and No. 4.
    4. Install the shift solenoid valve SLN with the bolt.

      Torque: 10 N.m (100 kgf.cm, 7 ft.lbf) 

    5. Install the shift solenoid valve No. 1, No. 2, No. 3 and No. 4 with the 4 bolts.

      Torque: 

      Shift solenoid valve No. 1 and No. 3: 

      6.4 N.m (65 kgf.cm, 56 in.lbf) 

      Shift solenoid valve No. 2 and No. 4: 

      10 N.m (100 kgf.cm, 7 ft.lbf) 

      Fig 10: Identifying Valve Body Shift Solenoid Valves
      G00925278Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Install the check ball body and spring.
      Fig 11: Installing Check Ball Body & Spring
      G00925279Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Align the groove of the manual valve to pin of the lever.
      Fig 12: Aligning Groove Of Manual Valve To Pin Of Lever
      G00925280Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    8. Install the 20 bolts.

      Torque: 10 N.m (100 kgf.cm, 7 ft.lbf) 

      Bolt length: 

      Bolt A: 23 mm (0.91 in.) 

      Bolt B: 28 mm (1.10 in.) 

      Bolt C: 36 mm (1.42 in.) 

      Bolt D: 55 mm (2.17 in.) 

      Fig 13: Installing Valve Body Bolts
      G00925281Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. INSTALL TRANSMISSION WIRE 
    1. Connect the 7 connectors to the solenoid valves.
    2. Install the clamp with the bolt.

      Torque: 6.4 N.m (65 kgf.cm, 56 in.lbf) 

    3. Connect the ATF temperature sensor.
      Fig 14: Installing Clamp With Bolt
      G00925282Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. INSTALL VALVE BODY OIL STRAINER ASSY 
    1. Install 3 new gaskets.
      Fig 15: Installing Oil Strainer Gaskets
      G00925283Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install the oil strainer with the 4 bolts.

      Torque: 10 N.m (100 kgf.cm, 7 ft.lbf) 

      Fig 16: Installing Oil Strainer Bolts
      G00925284Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. INSTALL AUTOMATIC TRANSMISSION OIL PAN SUB-ASSY 
    1. Install the 3 magnets in the indications of the oil pan.
      Fig 17: Installing Magnets In Oil Pan
      G00925285Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove any packing material and be careful not to drop oil on the contacting surfaces of the transmission case and oil pan.
    3. Apply FIPG to the oil pan.

      FIPG: 

      Part No. 08826 - 00090, THREE BOND 1281 or equivalent 

      Fig 18: Applying FIPG To Oil Pan
      G00925286Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Install the oil pan with the 19 bolts.

      Torque: 7.4 N.m (75 kgf.cm, 65 in.lbf) 

      HINT:

      Replace the only "A" bolt with a new one.

      Fig 19: Installing Oil Pan Bolts
      G00925287Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. ADD AUTOMATIC TRANSMISSION FLUID 
  11. INSPECT AUTOMATIC TRANSMISSION FLUID (See  AUTOMATIC TRANSMISSION FLUID  )