2004 Lexus LS 430FACTORY OEM SERVICE PROCEDURE

Generator ASSY: Replacement

  1. SEPARATE BATTERY NEGATIVE TERMINAL 
  2. REMOVE AIR CLEANER INLET NO. 1 
  3. REMOVE V-BANK COVER 
  4. REMOVE ENGINE UNDER COVER NO. 1 
  5. REMOVE FAN AND GENERATOR V BELT 
    1. Loosen the belt tension by turning the drive belt tension counterclockwise, and remove the drive belt.

    HINT:

    The pulley bolt of the belt tensioner has a left-hand thread.

    Fig 1: Removing Fan And Generator V Belt
    G01032136Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. DISCONNECT PS OIL COOLER PIPE 
    1. Remove the 2 bolts and 2 screws, disconnect the 2 PS oil cooler pipes from the oil pan.
  7. REMOVE GENERATOR ASSY 
    1. Disconnect the generator connector.
    2. Remove the rubber cap and nut, disconnect the generator wire.
    3. Remove the bolt and ground cable from the generator.
    4. Remove the bolt and cord clip from the generator.
      Fig 2: Disconnecting PS Oil Cooler Pipe
      G01032137Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Remove the bolt, 2 nuts, wire bracket and generator.
      Fig 3: Locating Bolt Of Generator Assy
      G01032138Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. INSTALL GENERATOR ASSY 
    1. Install the generator and wire bracket with the bolt and 2 nuts.

      Torque: 39 N.m (400 kgf.cm, 29 ft.lbf) 

    2. Install the cord clip to the generator with the bolt.
    3. Install the ground cable to the generator with the bolt.
    4. Connect the generator wire and install the rubber cap with the nut.

      Torque: 9.8 N.m (100 kgf.cm, 7 ft.lbf) 

    5. Connect the generator connector.
  9. CONNECT PS OIL COOLER PIPE 
    1. Connect the 2 PS oil cooler pipes to the oil pan with the 2 bolts and 2 screws.
      Fig 4: Connecting PS Oil Cooler Pipe
      G01032139Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. INSTALL FAN AND GENERATOR V BELT 
    1. Install the drive belt by turning the drive belt tension counterclockwise.

    HINT:

    The pulley bolt of the belt tensioner has a left-hand thread.

    Fig 5: Installing Fan And Generator V Belt
    G01032140Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. INSTALL ENGINE UNDER COVER NO.1 
  12. INSTALL V-BANK COVER 

    Torque: 5.0 N.m (51 kgf.cm, 44 in.lbf) 

  13. INSTALL AIR CLEANER INLET NO.1 
  14. CONNECT BATTERY NEGATIVE TERMINAL 
  15. POWER WINDOW CONTROL SYSTEM INITIALIZE (See  INITIALIZATION  ) 
  16. FRONT POWER SEAT CONTROL SYSTEM INITIALIZE (See  INITIALIZATION  ) 
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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