Lexus IS250 · Service Manual BRAKE

INSTALLATION

Removal / installation


1. INSTALL FRONT SPEED SENSOR

  1. Wipe off sealant attached to the front speed sensor's fitting surface with white gasoline.

    NOTICE:
    Prevent foreign matter from attaching to the sensor rotor.

  1. C108175E01
    Install a new front speed sensor to the hub and bearing assembly. The front speed sensor connector should be placed in the upper position.

  1. C109297E01
    Using the SST and press, install the skid control sensor onto the hub and bearing.
    SST
    09214-76011  

    NOTICE:
    1. Keep the sensor away from magnets.
    2. Do not use a hammer on the front speed sensor.
    3. Check that there is no foreign matter such as iron chips on the front speed sensor's detecting portion.
    4. Slowly press the front speed sensor straight.


2. INSTALL FRONT AXLE HUB SUB-ASSEMBLY

  1. F048238
    Install the front axle hub sub-assembly and front disc brake dust cover with the 4 bolts.

    Torque:
    69 N*m{ 702 kgf*cm , 51 ft.*lbf }


3. 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.


4. 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.


5. 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.


6. 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.


7. CONNECT FRONT SPEED SENSOR

  1. C105625E03
    Connect the speed sensor connector to the front speed sensor.

    NOTICE:
    Do not twist the sensor wire.


8. INSTALL FRONT WHEEL

Torque:
103 N*m{ 1,050 kgf*cm , 76 ft.*lbf }


9. INSPECT SPEED SENSOR SIGNAL

HINT:
(Click here)

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