LEMON Manuals: Even more car manuals for everyone
Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Disc Brakes >> Repair Instructions >> Front Brake Rotor Replacement >> Removal Procedure

Removal Procedure

    Fig 1: Compressing Brake Caliper Pistons
    GM370154Courtesy of GENERAL MOTORS CORP.
    NOTE: Any new rotor must have the protective coating removed from the friction surfaces before being placed in service. Remove the protective coating using denatured alcohol or an equivalent brake cleaner, and wipe the surface clean with clean cloths. Do not use gasoline, kerosene, or other oil base solvents which may leave an oily residue. This residue is damaging to the brake lining and is flammable.
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  3. Mark the relationship of the rotor to the hub.
  4. 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.
  5. Slowly tighten the C-clamp until the pistons are pushed into the caliper bores enough to remove the caliper from the pads.
  6. Remove the C-clamp from the caliper.
  7. Fig 2: View Of Brake Caliper & Brake Caliper Bracket
    GM924321Courtesy of GENERAL MOTORS CORP.
  8. Remove the 2 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.
  10. 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.
  11. Remove the rotor retaining push nuts from the wheel studs, if applicable.
  12. 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.
  13. Fig 3: View Of Front Brake Rotor And Hub
    GM370132Courtesy of GENERAL MOTORS CORP.
  14. Remove the rotor.
  15. 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 (2) M10 x 1.5 bolts into the threaded holes of the rotor.
    • Tighten both bolts evenly to force the rotor from the hub.