CTS 2006-2007, CTS-V 2005-2007, DTS 2006-2007

Brake Disc (Rotor)

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Removal & Installation



  1. Check to be sure that the park brake is released.
  2.  
  3. Before servicing the vehicle, refer to the Precautions Section.
  4.  
  5. Raise and support the vehicle.
  6.  
  7. Remove the tire and wheel assembly.
    NOTE
    Support the brake caliper with heavy mechanic wire, or equivalent, whenever it is separated from its mount and the hydraulic flexible brake hose is still connected. Failure to support the caliper in this manner will cause the flexible brake hose to bear the weight of the caliper, which may cause damage to the brake hose and in turn may cause a brake fluid leak.

  8.  
  9. Remove the brake caliper and the caliper mounting bracket as an assembly from the suspension knuckle and support the assembly with heavy mechanic's wire, or equivalent. Ensure that there is no tension on the hydraulic brake flexible hose.
  10.  
  11. Matchmark the position of the brake rotor to the wheel studs.
  12.  
  13. Remove the brake rotor mounting screw.

    Click image to see an enlarged view

    Fig. Brake rotor, hub and mounting screw shown

  14.  
  15. Remove the brake rotor. Do not force the rotor off. If the rotor is difficult to remove, ease it off by gently rotating it as you pull outward.
  16.  
  17. If the brake rotor cannot be removed perform the following:
    1. Assemble the slide hammer to the hook attachment.
    2.  
    3. Insert the hook attachment between the rotor friction surfaces in the vent section of the rotor.
    4.  
    5. Using slide hammer and hook attachment remove the rotor from the hub assembly.

      Click image to see an enlarged view

      Fig. View of rotor removal with slide hammer and hook attachment

    6.  

  18.  
  19. Inspect the park brake components for the following conditions:
    1. Bent or broken hold down spring.
    2.  
    3. Broken, cracked or worn brake shoe lining.
    4.  
    5. Bent or damaged brake shoe.
    6.  
    7. Worn, bent or damaged backing plate.
    8.  
    9. If any of these conditions are found replace the affected parts.
    10.  

  20.  

To install:

  1. Whenever the brake rotor has been separated from the hub/axle flange, any rust or contaminants should be cleaned from the hub/axle flange and the brake rotor mating surfaces. Failure to do this may result in excessive assembled lateral runout (LRO) of the brake rotor, which could lead to brake pulsation.
  2.  
  3. Inspect and clean all mating surfaces.
  4.  
  5. If installing a new brake rotor, adjust the clearance of the parking brake shoe to the drum-in-hat portion of the brake rotor.
  6.  
  7. Install the brake rotor to the hub/axle flange. Use the matchmark made prior to removal for proper orientation to the flange.
  8.  
  9. Install the brake rotor mounting screw. Tighten the brake rotor mounting screw to 124 inch lbs. (14 Nm).
  10.  
  11. Install the brake caliper and the brake caliper bracket as an assembly to the suspension knuckle.
  12.  
  13. Tighten the rear brake caliper bracket bolts to 88 ft. lbs. (120 Nm).
  14.  
  15. Install the tire and wheel assembly.
  16.  
  17. With the engine OFF , gradually apply the brake pedal to approximately 2 / 3 of its travel distance.
  18.  
  19. Slowly release the brake pedal.
  20.  
  21. Wait 15 seconds, then repeat steps 9-10 until a firm brake pedal apply is obtained; this will properly seat the brake caliper pistons and brake pads.
  22.  
  23. Check the fluid level in the master cylinder and fill as necessary.
  24.  
  25. Road test the vehicle for proper brake operation.
  26.  
  27. If the brake rotor was refinished or replaced, or if new brake pads were installed, burnish the pads and rotors.
  28.  

(J55) Brake System
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Check to be sure that the park brake is released.
  4.  
  5. Raise the vehicle.
  6.  
  7. Remove the tire and wheel.
  8.  
  9. Remove the brake caliper mounting bracket bolts.
  10.  
  11. Remove the brake caliper and the caliper mounting bracket as an assembly from the suspension knuckle and support the assembly with heavy mechanic's wire, or equivalent. Ensure that there is no tension on the hydraulic brake flexible hose.
  12.  
  13. Matchmark the position of the brake rotor to the wheel studs.
  14.  
  15. Remove the brake rotor. Do not force the rotor off. If the rotor is difficult to remove, ease it off by gently rotating it as you pull outward.

    Click image to see an enlarged view

    Fig. Rear brake rotor removal (J55) brake system

  16.  
  17. If the brake rotor cannot be removed perform the following:
    1. Assemble the slide hammer to the hook attachment.
    2.  
    3. Insert the hook attachment between the rotor friction surfaces in the vent section of the rotor.
    4.  
    5. Using slide hammer and hook attachment remove the rotor from the hub assembly.

      Click image to see an enlarged view

      Fig. View of rotor removal with slide hammer and hook attachment

    6.  

  18.  
  19. Inspect the park brake components for the following conditions:
    1. Bent or broken hold down spring.
    2.  
    3. Broken, cracked or worn brake shoe lining.
    4.  
    5. Bent or damaged brake shoe.
    6.  
    7. Worn, bent or damaged backing plate.
    8.  
    9. If any of these conditions are found replace the affected parts.
    10.  

  20.  

To install:

  1. Whenever the brake rotor has been separated from the hub/axle flange, any rust or contaminants should be cleaned from the hub/axle flange and the brake rotor mating surfaces. Failure to do this may result in excessive assembled lateral runout (LRO) of the brake rotor, which could lead to brake pulsation.
  2.  
  3. Inspect and clean all mating surfaces.
  4.  
  5. If installing a new brake rotor, adjust the clearance of the parking brake shoe to the drum-in-hat portion of the brake rotor.
  6.  
  7. Install the brake rotor to the hub/axle flange. Use the matchmark made prior to removal for proper orientation to the flange.
  8.  
  9. Install the brake caliper and the brake caliper bracket as an assembly to the suspension knuckle.
  10.  
  11. Tighten the rear brake caliper bracket bolts to 120 ft. lbs. ft. lbs. (163 Nm).
  12.  
  13. Install the tire and wheel assembly.
  14.  
  15. With the engine OFF , gradually apply the brake pedal to approximately 2 / 3 of its travel distance.
  16.  
  17. Slowly release the brake pedal.
  18.  
  19. Wait 15 seconds, then repeat steps 9-10 until a firm brake pedal apply is obtained; this will properly seat the brake caliper pistons and brake pads.
  20.  
  21. Check the fluid level in the master cylinder and fill as necessary.
  22.  
  23. Road test the vehicle for proper brake operation.
  24.  
  25. If the brake rotor was refinished or replaced, or if new brake pads were installed, burnish the pads and rotors.
  26.  

(JL9) Brake System
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Raise and support the vehicle.
  4.  
  5. Remove the tire and wheel assembly.
    NOTE
    Support the brake caliper with heavy mechanic wire, or equivalent, whenever it is separated from its mount and the hydraulic flexible brake hose is still connected. Failure to support the caliper in this manner will cause the flexible brake hose to bear the weight of the caliper, which may cause damage to the brake hose and in turn may cause a brake fluid leak.

  6.  
  7. Remove caliper mounting bracket bolts.
  8.  
  9. Remove the brake caliper and the caliper mounting bracket as an assembly.
  10.  
  11. Remove the brake rotor mounting screw.
  12.  
  13. Remove the brake rotor.
  14.  
  15. Clean all mating surfaces.

    Click image to see an enlarged view

    Fig. Rear brake rotor removal (JL9) brake system

  16.  

To install:

  1. Install the brake rotor.
  2.  
  3. Install the brake rotor mounting bolt. Tighten bolt to 106 inch lbs. (12 Nm).
  4.  
  5. Remove mechanic wire and lower brake caliper assembly into position.
  6.  
  7. Tighten the caliper mounting bracket bolts to 94 ft. lbs. (128 Nm).
  8.  
  9. Install tire and wheel assembly.
  10.  
  11. With the engine OFF , gradually apply the brake pedal to approximately 2 / 3 of its travel distance.
  12.  
  13. Slowly release the brake pedal.
  14.  
  15. Wait 15 seconds, then repeat steps 9-10 until a firm brake pedal apply is obtained; this will properly seat the brake caliper pistons and brake pads.
  16.  
  17. Check the fluid level in the master cylinder and fill as necessary.
  18.  
  19. Road test the vehicle for proper brake operation.
  20.  
  21. If the brake rotor was refinished or replaced, or if new brake pads were installed, burnish the pads and rotors.
  22.  

 
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