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Home >> Lexus >> 2019 >> LS 500 Base, RWD >> Repair and Diagnosis >> Drivelines & Axles >> Wheel Hubs >> Axle And Differential - Service Information (1 Of 3) >> FRONT AXLE HUB (for AWD) >> On-Vehicle Inspection [12/2017 - 10/2023] >> Procedure

On-Vehicle Inspection [12/2017 - 10/2023]: Procedure

  1. AIR SUSPENSION CONTROL PROHIBITED (w/ Air Suspension) 

    Refer to PRECAUTION [12/2017 - ]

  2. DISCONNECT BRAKE BOOSTER PUMP CONNECTOR (w/o Vacuum Brake Booster) 

    Refer to PROCEDURE - Step 2 [12/2017 - 09/2018] , or refer to PROCEDURE - Step 2 [09/2018 - 10/2020] , or refer to PROCEDURE - Step 2 [10/2020 - 10/2022] , or refer to PROCEDURE - Step 2 [10/2022 - 10/2023]

  3. REMOVE FRONT WHEEL 

    Refer to REMOVAL [12/2017 - 10/2023]

  4. DISCONNECT DISC BRAKE CYLINDER ASSEMBLY 

    See step  8 [12/2017 - 10/2022], or see step  8 [10/2022 - 10/2023]

  5. REMOVE FRONT DISC LH 
  6. INSPECT FRONT AXLE HUB BEARING LOOSENESS 
    1. Using a dial indicator, check for looseness near the center of the front axle hub sub-assembly.
      GTY776622Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Maximum Looseness

      0.05 mm (0.00196 in.)

      NOTE:
      • Ensure that the dial indicator is set perpendicular to the measurement surface.
      • Keep the magnet of the dial indicator away from the front speed sensor.

      HINT: 

      If the looseness exceeds the maximum, replace the front axle hub sub-assembly.

  7. INSPECT FRONT AXLE HUB RUNOUT 
    1. Using a dial indicator, check for runout on the surface of the front axle hub sub-assembly outside the front axle hub bolts.
      GTY776623Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Maximum Runout

      0.05 mm (0.00196 in.)

      NOTE:
      • Ensure that the dial indicator is set perpendicular to the measurement surface.
      • Make sure to set the tip of the dial indicator towards the outside of the front axle hub bolts.
      • Keep the magnet of the dial indicator away from the front speed sensor.

      HINT: 

      If the runout exceeds the maximum, replace the front axle hub sub-assembly.

  8. INSTALL FRONT DISC LH 
  9. CONNECT DISC BRAKE CYLINDER ASSEMBLY 

    See step  13 [12/2017 - 10/2020], or see step  13 [10/2020 - 10/2022], or see step  13 [10/2022 - 10/2023]

  10. INSTALL FRONT WHEEL 

    Refer to INSTALLATION [12/2017 - 10/2023]

  11. CONNECT BRAKE BOOSTER PUMP CONNECTOR (w/o Vacuum Brake Booster) 

    Refer to PROCEDURE - Step 6