LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2003 >> GS 430 >> Repair and Diagnosis >> Engine Performance >> Adjustment >> Engine Mechanical (3UZ-FE) >> Engine Unit >> Removal
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Engine Unit: Removal

  1. REMOVE HOOD 
  2. REMOVE ENGINE UNDER COVER 
  3. DRAIN ENGINE COOLANT 
  4. DRAIN ENGINE OIL 
  5. REMOVE V-BANK COVER 
  6. REMOVE AIR CLEANER INLET 
  7. REMOVE AIR CLEANER ASSEMBLY 
  8. REMOVE INTAKE AIR CONNECTOR PIPE 
  9. REMOVE RADIATOR ASSEMBLY (See  REMOVAL  ) 
  10. REMOVE DRIVE BELT (See  BELT TENSION  )  . The drive belt tension can be released by turning the belt tensioner counterclockwise. The pulley bolt for the belt tensioner has a left-hand thread.
  11. REMOVE FRONT SUSPENSION MEMBER BRACE 

    Remove the 6 bolts and brace.

    Fig 1: Removing Front Suspension Member Brace
    G02951512Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. DISCONNECT WIRE, CABLES, HOSES AND CLAMP 
    • Disconnect the generator wire from generator.
    • Disconnect the wire for generator wire from wire clamp on generator.
    • Disconnect the ground cable from stay on generator.
    • Disconnect the PS oil hose from No. 1 oil pan.
    • Disconnect the 2 PS air hoses from hose clamp on No. 3 RH timing belt cover.
    • Disconnect the hose clamp for PS air hose.
    • Disconnect the PS air hose from upper intake manifold.
    • Disconnect the starter cable from battery.
    • Disconnect the ground strap from body.
    • Disconnect the 2 heater hoses.
    • Disconnect the fuel inlet hose (rear fuel pipe) from fuel main tube.
  13. DISCONNECT ENGINE WIRE FROM ECU BOX 
    1. Remove these parts:
      • Remove the ECM cover
      • Remove the ECM hood
    2. Disconnect these connectors:
      • Disconnect the 3 engine ECM connectors
      • Disconnect the 4 wire harness connectors
      • Disconnect the 2 junction connectors
    3. Disconnect the grommet and engine wire from the ECM box.
  14. DISCONNECT HEATED OXYGEN SENSORS FROM FRONT EXHAUST PIPE 
    1. Disconnect the 2 wire grommets from the floor panel.
    2. Disconnect the 2 oxygen sensors from the exhaust pipe.
  15. REMOVE FRONT AND CENTER EXHAUST PIPES 
  16. REMOVE TWC 

    Remove the 3 nuts, TWC and gasket. Remove the 2 TWC.

    Fig 2: Removing TWC
    G02951513Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  17. REMOVE CENTER FRONT FLOOR BRACE 
  18. REMOVE HEAT INSULATORS 
  19. REMOVE PROPELLER SHAFT (See  REMOVAL  ) 
  20. DISCONNECT A/C COMPRESSOR FROM ENGINE 
    1. Disconnect the A/C compressor connector.
    2. Disconnect the wire clamp from the wire bracket on the A/C compressor.
    3. Remove the bolt, nut and A/C compressor stay.
    4. Remove the bolt, and disconnect the wire bracket from the A/C compressor.
    5. Remove the bolt, and disconnect the A/C compressor from the engine.
    Fig 3: Disconnecting A/C Compressor From Engine
    G02951514Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  21. REMOVE PS PUMP 
    1. Remove the 2 screws and RH engine under cover.
      Fig 4: Removing Screws And RH Engine Under Cover
      G02951515Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the PS oil pressure switch connector.
    3. Remove the 2 bolts and nut, and disconnect the PS pump from the engine.
  22. REMOVE TRANSMISSION CONTROL ROD 

    Remove the 2 clips and control rod.

    Fig 5: Removing Clips And Control Rod
    G02951516Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  23. DISCONNECT PS GEAR HOUSING 
    1. Check the steering wheel at the straight-ahead position.
    2. Remove the bolt holding the sliding yoke to the steering intermediate shaft.
      Fig 6: Removing Bolt Holding Sliding Yoke To Steering Intermediate Shaft
      G02951517Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the bolt, and disconnect the 2 PS oil tubes from the front frame.
    4. Remove the 4 bolts, and disconnect the PS gear housing from the front frame.
      Fig 7: Disconnecting PS Gear Housing From Front Frame
      G02951518Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Disconnect the sliding yoke from the intermediate shaft.

    HINT:

    Suspend the PS gear housing securely.

  24. REMOVE ENGINE AND TRANSMISSION ASSEMBLY FROM VEHICLE 
    1. Remove the nut and No.1 V-bank cover bracket from the No.2 engine hanger.
    2. Attach the engine chain hoist to the engine hangers.
      Fig 8: Attaching Engine Chain Hoist To Engine Hangers
      G02951519Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the 2 hole plugs.
    4. Remove the 4 nuts holding the engine mounting insulators to the front suspension crossmember.
      Fig 9: Removing Nuts Holding Engine Mounting Insulators To Front Suspension Crossmember
      G02951520Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Remove the 4 bolts, 4 nuts and rear engine mounting member.
      Fig 10: Removing Rear Engine Mounting Member
      G02951521Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Lift the engine out of the vehicle slowly and carefully.
      Fig 11: Lifting Engine Out Of Vehicle
      G02951522Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      Make sure the engine is clear of all wiring, hoses and cables.

    7. Place the engine and transmission assembly onto the stand.
  25. DISCONNECT ENGINE WIRE FROM TRANSMISSION Disconnect the connectors and wire: 
    • Disconnect the VSV connector.
    • Disconnect the PNP switch connector.
    • Disconnect the solenoid connector.
    • Disconnect the direct clutch speed sensor connector.
    • Disconnect the engine wire from 3 wire clamps.
  26. REMOVE OIL DIPSTICK GUIDE AND DIPSTICK FOR TRANSMISSION 
    1. Remove the bolt.
    2. Pull out the dipstick guide and dipstick from the dipstick tube of transmission.
    3. Remove the O-ring from the dipstick guide.
  27. REMOVE OIL COOLER PIPES FOR TRANSMISSION 
    1. Disconnect the oil level sensor connector.
    2. Remove the 3 bolts and 3 stays.
    3. Loosen the 2 union nuts, and remove the 2 oil cooler pipes.
  28. REMOVE TORQUE CONVERTER CLUTCH BOLTS 
    1. Remove the 2 bolts and flywheel housing under cover.
      Fig 12: Removing Flywheel Housing Under Cover
      G02951523Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the crankshaft pulley bolt to gain access to each bolt.
      Fig 13: Turning Crankshaft Pulley Bolt To Gain Access To Each Bolt
      G02951524Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Hold the crankshaft pulley bolt with a wrench, and remove the 6 bolts.
  29. REMOVE TRANSMISSION 
    1. Remove the 10 bolts and ground strap.
      Fig 14: Removing Ground Strap Bolts
      G02951525Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the transmission together with the torque converter clutch from the engine.
  30. REMOVE DRIVE PLATE 

    Remove the 8 bolts, front spacer, drive plate and rear spacer.

    Fig 15: Removing Drive Plate
    G02951526Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
scientia non olet · About LEMON Manuals