LEMON Manuals: Even more car manuals for everyone
Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 481 (Disc Brake System) >> Repair Instructions >> Front Brake Rotor Replacement (2500 Series) >> Removal Procedure

Removal Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect the fluid level in the brake master cylinder reservoir.
  2. If the brake fluid level is midway between the maximum-full point and the minimum allowable level, no brake fluid needs to be removed from the reservoir before proceeding.
  3. If the brake fluid level is higher than midway between the maximum-full point and the minimum allowable level, remove brake fluid to the midway point before proceeding.
  4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  5. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  6. If installing the original brake rotor, mark the relationship of the brake rotor to the hub.
    7. Fig 1: Compressing Brake Caliper Pistons
    GM370154Courtesy of GENERAL MOTORS COMPANY
  7. Compress the brake caliper pistons.
    1. Install 2 large C-clamps over the top of the caliper housing and against the back of the outboard brake pad.
    2. Slowly tighten the C-clamps until the caliper pistons are pushed completely into the caliper bores.
    3. Remove the C-clamps from the caliper.
    8. Fig 2: View Of Brake Caliper & Brake Caliper Bracket
    GM924321Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    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.

    NOTE:

    Remove the brake caliper and bracket as a single unit. It is not necessary to separate them.

  8. Remove the 2 brake caliper bracket mounting bolts.
  9. Remove the caliper and bracket assembly and support with heavy mechanics wire or equivalent.
  10. Remove the rotor retaining push nuts from the wheel studs, if applicable.
  11. 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.
    1. Install the wheel nuts on the wheel studs to protect the ends of the wheel studs.
    2. Strike the brake rotor between the wheel studs to separate the brake rotor from the wheel hub.
    3. Remove the wheel nuts.
    12. Fig 3: View Of Front Brake Rotor And Hub
    GM370132Courtesy of GENERAL MOTORS COMPANY
  12. Remove the brake rotor.
  13. If the brake does not separate from the wheel hub, perform the following steps.
    • 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.
scientia non olet · About LEMON Manuals