2002 Lexus SC 430FACTORY OEM SERVICE PROCEDURE

Center Differential: Disassembly

WARNING: This page is about a different car, the 2003 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT HIGH SPEED OUTPUT GEAR RADIAL AND THRUST CLEARANCE 
    1. Using a feeler gauge, measure the high speed output gear thrust clearance.

      Standard clearance: 

      0.10 - 0.25 mm (0.0039 - 0.0098 in.) 

      Maximum clearance: 

      0.25 mm (0.0098 in.) 

      Fig 1: Measuring High Speed Output Gear Thrust Clearance
      G01353730Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using a dial indicator, measure the high speed output gear radial clearance.

      Standard clearance: 

      0.035 - 0.091 mm (0.00138 - 0.00358 in.) 

      Maximum clearance: 

      0.091 mm (0.00358 in.) 

      Fig 2: Measuring High Speed Output Gear Radial Clearance
      G01353731Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. REMOVE FRONT DRIVE GEAR PIECE 
    1. Using a snap ring expander, remove the snap ring.
    2. Using SST and a press, remove the front drive gear piece.

      SST 09950-00020, 09950-60010 (09951-00320)

      NOTE: Be careful not to drop the center differential assembly.
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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.