2012 Lexus LS 460L AWDFACTORY OEM SERVICE PROCEDURE

Charging System (Service Information): Generator: Reassembly: Reassembly

  1. INSTALL GENERATOR ROTOR BEARING 
    Fig 1: Pressing Generator Rotor Bearing Into Drive End Frame
    GTY105245Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Using SST and a press, press a new generator rotor bearing into the drive end frame.
      • SST: 09950-60010 
        • 09951-00500
      • SST: 09950-70010 
        • 09951-07100
    2. Align the protrusions of the retainer with the drive end frame's cutouts, and then install the retainer with the 4 screws.
      Fig 2: Identifying Retainer With Screws
      GTY100851Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Torque: 3.0 N*m (30 kgf*cm, 27 in.*lbf) 

  2. INSTALL GENERATOR ROTOR ASSEMBLY 
    Fig 3: Identifying Generator Rotor Assembly
    GTY104412Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Install the generator rotor assembly.
    2. Install the generator washer.
      Fig 4: Identifying Generator Washer
      GTY103656Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSTALL GENERATOR COIL ASSEMBLY 
    Fig 5: Pressing Generator Coil Into Drive End Frame
    GTY104457Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Using SST and a press, press the generator coil into the drive end frame.
      • SST: 09612-70100 
    2. Tighten the 4 through bolts.
      Fig 6: Identifying Bolts
      GTY101389Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Torque: 7.5 N*m (76 kgf*cm, 66 in.*lbf) 

  4. INSTALL GENERATOR BRUSH HOLDER ASSEMBLY 
    Fig 7: Inserting Pin Into Generator Brush Holder Assembly
    GTY104052Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Insert a pin (diameter 1.0 mm) into the generator brush holder assembly to fix the 2 brushes in place.
    2. Install the generator brush holder to the generator coil with the 2 screws.
      Fig 8: Identifying Generator Brush Holder Screws
      GTY105250Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Torque: 1.8 N*m (18 kgf*cm, 16 in.*lbf) 

    3. Remove the pin (diameter 1.0 mm).
  5. INSTALL GENERATOR TERMINAL INSULATOR 
    Fig 9: Identifying Generator Terminal Insulator To Generator Coil
    GTY105249Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Install the generator terminal insulator to the generator coil.
  6. INSTALL GENERATOR REAR END COVER 
    Fig 10: Identifying Generator Rear End Cover Nuts
    GTY101698Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Install the generator rear end cover to the generator coil with the 3 nuts.

      Torque: 4.6 N*m (47 kgf*cm, 41 in.*lbf) 

  7. INSTALL GENERATOR PULLEY 
    • SST: 09820-63011 
      • 09820-06010
      • 09820-06021
    Fig 11: Identifying Pulley Lock Nut With SST
    GTY100502Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Install the generator pulley, and temporarily install the pulley lock nut.
    2. Install SST1-A to the pulley shaft.
    3. Install SST1-B to SST1-A.
    4. Hold SST 1-A on the pulley shaft area, and tighten SST 1-B to the specified torque.

      Torque: 39.2 N*m (400 kgf*cm, 29 ft.*lbf) 

      NOTE: Securely fix SST1-A to the pulley shaft.

      HINT: 

      Read SST1-B tightening torque by using the reactive torque of SST1-A.

    5. Mount 2 faces of SST2 in a vise.
      Fig 12: Mounting Faces Of SST2 In Vise
      GTY101824Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. With SST1-A and B attached to the generator, insert the pulley lock nut into the hexagon portion of SST2.
    7. To tighten the pulley nut, rotate SST1-A in the generator's reverse rotation direction.
      Fig 13: Tightening Pulley Nut
      GTY103213Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Torque: 133 N*m (1351 kgf*cm, 98 ft.*lbf) 

    8. Remove the generator from SST2.
    9. Fix SST1-B in place, and rotate SST1-A to the right to loosen it. Then remove SST1-A and B from the generator.
      Fig 14: Identifying SST1-A And B From Generator
      GTY105242Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    10. Check that the pulley rotates smoothly.
Factory Service Tools

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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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