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Home >> Hummer >> 2003 >> H2 >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Disc Brakes >> Removal & Installation >> Brake Rotor >> Removal (Front)

Removal (Front)

  1. Raise and support the vehicle. Remove the tire and wheel assembly. Mark the relationship of the rotor to the hub.
  2. Install a C-clamp over the body of the brake caliper, with the C-clamp ends against the rear of the caliper body and the outboard disc brake pad. See Figure. Slowly tighten the C-clamp until the pistons are pushed into the caliper bores enough to remove the caliper from the pads. Remove the C-clamp from the caliper. Remove the 2 brake caliper bracket mounting bolts.
  3. NOTE: Support the brake caliper with heavy mechanic's 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.
  4. Remove the brake caliper and brake caliper mounting bracket as an assembly and support with heavy mechanic's wire or equivalent. DO NOT disconnect the hydraulic brake flexible hose from the caliper. Remove the rotor retaining push nuts from the wheel studs, if applicable. It may be necessary to strike the end of the hub or the rotor with a deadblow hammer to separate the rotor from the hub.
  5. Remove the rotor. See Fig 1. If the rotor is difficult to remove due to corrosion in the hub area use the following procedure to remove the rotor.
    • Clean all the surface areas and the threaded holes of contamination.
    • Generously apply penetrating oil or the equivalent to the hub/rotor area.
    • Insert M10 x 1.5" bolts (jack screws) into the threaded holes of the rotor.
    • Tighten both bolts evenly to force the rotor from the hub.
Fig 1: Removing/Installing Rotor (Front)
G00303323Courtesy of GENERAL MOTORS CORP.