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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Disc Brake System >> Repair Instructions >> Rear Disc Brake Pads Replacement >> Installation Procedure

Installation Procedure

    Fig 1: Lower Brake Pad Springs
    GM2505629Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    If installing new brake pads, install new springs.

  1. Install new brake pad springs (1).
    2. Fig 2: Outer Brake Pad
    GM2505627Courtesy of GENERAL MOTORS COMPANY
  2. Install the outer brake pad (1).
    3. NOTE:

    The inner brake pad is equipped with the wear sensor.

  3. Install the inner brake pad (2).
  4. Prepare the brake caliper bracket bolts and the bracket threaded holes for assembly:
    • Thoroughly clean the residue from the bolt threads with denatured alcohol or equivalent and allow to dry.
    • Thoroughly clean the residue from the threaded holes with denatured alcohol or equivalent and allow to dry.
    • Apply threadlocker to 2/3 of the threaded length of the caliper bracket bolts. Refer to Adhesives, Fluids, Lubricants, and Sealers 
    • Ensure there are no gaps in the threadlocker along the length of the filled area of the bolts.
    • Allow the threadlocker to cure approximately 10 minutes before installation.
    5. Fig 3: Brake Caliper Bracket Assembly
    GM2505625Courtesy of GENERAL MOTORS COMPANY
  5. Install the brake caliper bracket assembly (1).
    6. Fig 4: Brake Caliper Bracket Bolts
    GM2505622Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  6. Install the brake caliper bracket bolts (1) and tighten to 100 N.m (74 lb ft) + 60 degrees).
  7. Using an appropriate brake caliper piston spanner tool, slowly rotate the brake caliper piston clockwise while applying inward pressure to the brake caliper piston until the piston is fully seated in the brake caliper housing.
  8. Ensure the notches in the brake caliper piston align correctly with the pins on the inner disc brake pad.
    9. Fig 5: Brake Caliper Guide Pin Bolts
    GM2332715Courtesy of GENERAL MOTORS COMPANY
  9. Install the brake caliper to the brake caliper bracket.
  10. Using a backup wrench to hold the brake caliper guide pin stationary, install the brake caliper guide pin bolts (1) and tighten to 27 N.m (20 lb ft).
  11. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  12. With the engine OFF, gradually apply the brake pedal to approximately 2/3 of its travel distance.
  13. Slowly release the brake pedal.
  14. Wait 15 seconds, then repeat steps 12-13 until a firm brake pedal is obtained. This will properly seat the brake caliper piston and brake pads.
  15. Fill the master cylinder reservoir. Refer to Master Cylinder Reservoir Filling .
  16. Burnish the brake pads and rotors. Refer to Brake Pad and Rotor Burnishing .
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