Brake Disc Machining. General Procedures

Repair

1. Vehicle preparation.

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2. Lathe installation.

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3. Lateral runout adjustment.

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4. Making the cut.

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5. Machining the opposite side.

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6. Lathe maintenance.

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Repair

1. 1
   If machining a rear brake disc, activate EPB service mode.
   Refer to: Electric Parking Brake (EPB) Service Mode Activation and Deactivation (206-05 Parking Brake and Actuation, General Procedures).
2. 2
   Remove the wheel and tire.
   Refer to: Wheels and Tires (204-04A Wheels and Tires, Removal and Installation).
3. 3

   NOTICE: Do not allow the caliper to hang from the brake hose, as this may damage the hose.

   Remove the bolts and position the brake caliper and anchor plate assembly aside. Support the brake caliper and anchor plate assembly using mechanic's wire.
4. 4

   NOTICE: On some vehicles, the opposite side axle may rotate during the machining process. On these applications, the brake disc must be secured, otherwise damage to the brake disc may occur.

   If necessary, secure the opposite brake disc by hand-tightening 2 wheel nuts.
5. 5
   • Install the hub adapter using four wheel nuts on the wheel hub with 4, 7 or 8 studs.

   • Install the hub adapter using five wheel nuts on the wheel hub with 5 or 10 studs.

   • Install the hub adapter using six wheel nuts on the wheel hub with 6 studs.
6. 6
   Install the brake lathe.
7. 7
   If the brake lathe is not self-centering, adjust the lathe runout using a dial indicator.
8. 8
   Center the cutting head, adjust the cutting tips and install the chip deflector/silencer.
9. 9
   Machine the brake disc.
10. 10
    Remove the brake lathe and silencer.
11. 11
    Remove the wheel nuts and hub adapter.
12. 12
    Remove the metal chips.
13. 13
    Measure the brake disc thickness. If the measurement is below the minimum specification, install a new brake disc.
    Refer to: Brake Disc (206-03 Front Disc Brake, Removal and Installation).
    Refer to: Brake Disc (206-04 Rear Disc Brake, Removal and Installation).
14. 14
    If previously installed, remove the 2 wheel nuts securing the opposite brake disc.
15. 15
    Install the brake caliper or the brake caliper and anchor plate assembly, and install the bolts.
    Refer to: Brake Caliper Anchor Plate (206-03 Front Disc Brake, Removal and Installation).
    Refer to: Brake Caliper Anchor Plate (206-04 Rear Disc Brake, Removal and Installation).
16. 16
    Install the wheel and tire.
    Refer to: Wheels and Tires (204-04A Wheels and Tires, Removal and Installation).
17. 17
    If EPB service mode was activated, deactivate service mode.
    Refer to: Electric Parking Brake (EPB) Service Mode Activation and Deactivation (206-05 Parking Brake and Actuation, General Procedures).