Lexus IS250 · Service Manual BRAKE

REASSEMBLY

Removal / installation


1. INSTALL PARKING BRAKE ANCHOR BLOCK

  1. G033189
    Install the parking brake anchor block and cable support bracket with 2 nuts.

    Torque:
    76 N*m{ 775 kgf*cm , 56 ft.*lbf }

  1. Install the rear axle hub and bearing assembly (Click here).


2. APPLY HIGH TEMPERATURE GREASE

  1. Apply a thin layer of high temperature grease to the area where the parking brake plate contacts the parking brake shoe (Click here).


3. INSTALL PARKING BRAKE SHOE LEVER

  1. C107310E01
    Apply a thin layer of high temperature grease to the area where the parking brake shoe lever contacts the parking brake anchor block.

  1. Install the parking brake shoe lever to the parking brake cable assembly.

    NOTICE:
    Take care to install the correct parking brake shoe lever because the direction of the pin is different between left and right.


4. INSTALL NO. 2 PARKING BRAKE SHOE ASSEMBLY

  1. C107309E02
    Using SST, install the No. 2 parking brake shoe assembly with the No. 1 shoe hold down spring cup, No. 1 compression spring and No. 1 shoe hold down spring pin.
    SST
    09718-00010  

    HINT:
    Use the service hole to retain the No. 2 shoe hold down spring pin with your finger.


5. INSTALL NO. 1 PARKING BRAKE SHOE ASSEMBLY

  1. G032834E01
    Using SST, install the No. 1 parking brake shoe assembly with the No. 1 shoe hold down spring cup, No. 1 compression spring and No. 1 shoe hold down spring pin.
    SST
    09718-00010  

    HINT:
    Use the service hole to retain the No. 1 shoe hold down spring pin with your finger.


6. INSTALL PARKING BRAKE SHOE ADJUSTING SCREW SET

  1. C081250
    Apply high temperature grease to the thread and all joining areas of the parking brake shoe adjusting screw set.

  1. G032833
    Install the parking brake shoe adjusting screw set.


7. INSTALL NO. 1 PARKING BRAKE SHOE RETURN SPRING

  1. G033609
    Install the No. 1 parking brake shoe return spring.


8. INSTALL NO. 2 PARKING BRAKE SHOE RETURN SPRING

  1. G033610
    Install the No. 2 parking brake shoe return spring.


9. CHECK PARKING BRAKE INSTALLATION

  1. Make sure that all the parts are installed properly.
    If necessary, reinstall properly.

    C107312E01


10. INSTALL REAR DISC

  1. Align the matchmarks on the rear disc and rear axle hub.


11. ADJUST PARKING BRAKE SHOE CLEARANCE

  1. Temporarily install the hub nuts.

  1. Remove the shoe adjusting hole plug.

  1. Turn the shoe adjuster and expand the shoe until the disc locks.

  1. C107311E06
    Turn and contract the shoe adjuster until the disc can rotate smoothly.

    Standard:
    Return 7 notches

  1. Check that there is no brake drag against the shoe.

  1. Install the shoe adjusting hole plug.

  1. Remove the hub nuts.


12. INSTALL REAR DISC BRAKE CALIPER ASSEMBLY

  1. G032829
    Install the rear disc brake caliper assembly with the 2 bolts and 2 new No. 1 caliper plates.

    Torque:
    50 N*m{ 510 kgf*cm , 37 ft.*lbf }

    NOTICE:
    1. Do not twist the brake hose.
    2. Make sure that the bolts are free from damage and foreign matter.
    3. Do not overtighten the bolts.


13. INSTALL REAR WHEEL

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


14. INSPECT PARKING BRAKE PEDAL TRAVEL (for Automatic Transmission)

  1. Fully depress the parking brake pedal and release it to engage the parking brake.

  1. Depress the pedal to the floor again, and release it to disengage the parking brake.

  1. C107204
    Slowly depress the parking brake pedal to the floor, and count the number of clicks.

    Parking brake pedal travel:
    7 to 9 notches at 300 N (31 kgf, 67.5 lbf)


15. ADJUST PARKING BRAKE PEDAL TRAVEL (for Automatic Transmission)

  1. Depress the parking brake pedal. Hold the No. 1 wire adjusting nut using a wrench and loosen the lock nut.

  1. Release the parking brake pedal.

  1. C106337E02
    Turn the No. 1 wire adjusting nut until the parking brake pedal travel meets the above specification.

  1. Hold the wire adjusting No. 1 nut using a wrench or equivalent tool and tighten the lock nut.

    Torque:
    6.0 N*m{ 61 kgf*cm , 53 in.*lbf }

  1. Count the number of clicks after depressing and releasing the parking brake pedal 3 or 4 times.

  1. Check whether the parking brake drags or not.

  1. When operating the parking brake pedal, check that the parking brake indicator light comes on.


16. INSPECT PARKING BRAKE LEVER TRAVEL (for Manual Transmission)

  1. Pull firmly on the parking brake lever.

  1. Release the parking brake lock, and return the parking brake lever to its off position.

  1. C121749
    Slowly pull the parking brake lever all the way up, and count the number of clicks.

    Parking brake lever travel:
    4 to 6 notches at 200 N (20 kgf, 45 lbf)


17. ADJUST PARKING BRAKE LEVER TRAVEL (for Manual Transmission)

  1. Depress the parking brake lever. Hold the No. 1 wire adjusting nut using a wrench and loosen the lock nut.

  1. Release the parking brake lever.

  1. C124880E01
    Turn the No. 1 wire adjusting nut until the parking brake lever travel meets the above specification.

  1. Hold the No. 1 wire adjusting nut using a wrench or equivalent tool and tighten the lock nut.

    Torque:
    6.0 N*m{ 61 kgf*cm , 53 in.*lbf }

  1. Count the number of clicks after depressing and releasing the parking brake lever 3 or 4 times.

  1. Check whether the parking brake drags or not.

  1. When operating the parking brake lever, check that the parking brake indicator light comes on.

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