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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 213 (Disc Brake System) >> Repair Instructions >> Rear Brake Rotor Replacement (1500 Series) >> Removal Procedure

Removal Procedure

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  1. Inspect the fluid level in the brake master cylinder reservoir.
  2. If the fluid level is midway between the maximum-full point and the minimum allowable level, no fluid needs to be removed from the reservoir before proceeding.
  3. If the fluid level is higher than midway between the maximum-full point and the minimum allowable level, remove fluid to the midway point before proceeding.
  4. Release the park brake, if necessary.
  5. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  6. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
    7. Fig 1: Compressing Brake Caliper Piston
    GM1497136Courtesy of GENERAL MOTORS CORP.
  7. Compress the brake caliper piston:
    1. Install a large C-clamp over the top of the caliper housing and against the back of the outboard pad.
    2. Slowly tighten the C-clamp until the piston is pushed completely into the caliper bore.
    3. Remove the C-clamp from the caliper.
  8. Remove the brake caliper bracket mounting bolts.
    9. 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.
    Fig 2: View Of Brake Caliper & Bracket Assembly
    GM1708847Courtesy of GENERAL MOTORS CORP.
  9. Remove the brake caliper and the bracket as an assembly and support with heavy mechanics wire or equivalent.
  10. If installing the original brake rotor, mark the relationship of the rotor to the hub.
  11. Adjust the park brake so that the adjuster is fully seated.
    12. Fig 3: View Of Push Nuts
    GM1708857Courtesy of GENERAL MOTORS CORP.
  12. Remove the push nuts from the brake rotor if necessary.
  13. Apply a small amount of penetrating oil to the wheel studs.
  14. Install the lug nuts on the end of the wheel studs.
  15. Using a dead blow hammer, tap the brake rotor between the wheel studs.
  16. Remove the lug nuts from the wheel studs.
    17. Fig 4: View Of Brake Rotor
    GM1708887Courtesy of GENERAL MOTORS CORP.
  17. Remove the brake rotor from the axle flange.
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