Lexus IS250 · Service Manual SUSPENSION & AXLE

ON-VEHICLE INSPECTION

Inspection


REMOVE FRONT WHEEL

REMOVE FRONT DISC BRAKE CALIPER ASSEMBLY

  1. C127363
    Remove the No. 1 caliper plates from the brake caliper.

    NOTICE:
    Use wire or equivalent to prevent the brake caliper from hanging down by the flexible hose.


REMOVE FRONT DISC

  1. F041543E02
    Put matchmarks on the disc and the axle hub.

  1. Remove the front disc.


INSPECT FRONT AXLE HUB BEARING FOR LOOSENESS

  1. C117475
    Using a dial indicator, check for looseness near the center of the axle hub.

    Maximum:
    0.05 mm (0.0020 in.)

    NOTICE:
    Ensure that the dial indicator is perpendicular to the measurement surface.

    If looseness exceeds the maximum, replace the front axle hub.


INSPECT FRONT AXLE HUB FOR RUNOUT

  1. C117476
    Using a dial indicator, check for runout on the surface of the axle hub outside the hub bolt.

    Maximum:
    0.05 mm (0.0020 in.)

    NOTICE:
    Ensure that the dial indicator is set perpendicular to the measurement surface.

    If runout exceeds the maximum, replace the front axle hub.


INSTALL FRONT DISC

  1. Align the matchmarks and install the front disc.

    HINT:
    When replacing the disc with a new one, select the installation position where the front disc has the minimum runout.


INSTALL FRONT DISC BRAKE CALIPER ASSEMBLY

  1. C127363
    Install the brake caliper assembly and new No. 1 caliper plates to the steering knuckle with the 2 bolts.

    Torque:
    78 N*m{ 795 kgf*cm , 58 ft.*lbf }

    NOTICE:
    1. Do not twist the front brake hose when installing the front disc brake caliper.
    2. Make sure that there are no foreign objects or damage to the threads of the bolts.
    3. Do not overtighten the bolts because the steering knuckle is made of aluminum and may be damaged easily.


INSTALL FRONT WHEEL
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