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Home >> Lexus >> 2020 >> LS 500h AWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brake System (Rear) - Service Information >> REAR BRAKE (except 4-Pot Caliper) >> Installation [10/2023 - ] >> Procedure

Installation [10/2023 - ]: Procedure

  1. INSTALL REAR DISC LH 
    1. Check the identification mark to determine the installation side.
      NOTE:

      The rear disc needs to be installed to the correct side of the vehicle. There is a "L", indicating the disc for the left wheel, or a "R", indicating the disc for the right wheel, engraved on the disc in the position shown in the illustration.

      GTY776891Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. When reusing the rear disc LH:
      1. Align the matchmarks of the rear disc and rear axle hub and bearing assembly LH, and install the rear disc LH.
        GTY1232693Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Matchmark
    3. When replacing the rear disc LH:
      1. Inspect the rear disc runout.

        See step  5

      2. Select the installation position where the rear disc has minimal runout, and install the rear disc LH.
    4. Using a 5 mm hexagon socket wrench, install the bolt.

      Torque: 20 N.m (204 kgf/cm, 15 ft.lbf) 

      NOTE:
      • Do not apply excessive force to the bolt and rear disc.
      • Confirm that the head of the bolt is not protruding from the surface of the disc.
  2. INSTALL PARKING BRAKE SHOE ADJUSTING HOLE PLUG 
    1. Install the parking brake shoe adjusting hole plug to rear disc LH.
  3. INSTALL REAR DISC BRAKE CYLINDER ASSEMBLY LH 
    1. Install the rear disc brake cylinder assembly LH to the rear axle carrier sub-assembly LH with the 2 bolts.

      Torque: 151 N.m (1540 kgf/cm, 111 ft.lbf) 

  4. CONNECT REAR FLEXIBLE HOSE 
    1. Connect the rear flexible hose to the rear disc brake cylinder assembly LH with a new union bolt and a new gasket.

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

      NOTE:

      Install the rear flexible hose lock securely into the lock hole in the rear disc brake cylinder assembly LH.

  5. INSTALL REAR DISC BRAKE ANTI-SQUEAL SHIM 

    Refer to PROCEDURE - Step 1

  6. INSTALL REAR DISC BRAKE PAD 

    Refer to PROCEDURE - Step 2

  7. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL 

    See step  7

  8. BLEED BRAKE LINE 

    Refer to BLEEDING [10/2023 - ]

  9. ADJUST PARKING BRAKE 

    Refer to ADJUSTMENT [10/2023 - ]

  10. INSTALL REAR WHEEL 

    Refer to INSTALLATION [10/2023 - ]

  11. PARKING BRAKE SHOE BEDDING 

    Refer to UTILITY [10/2023 - ]