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Home >> GMC >> 2002 >> C3500 HD 6.5 F, Standard >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brakes >> Repair Instructions >> Master Cylinder Replacement >> Installation Procedure

Installation Procedure

  1. Bench bleed the master cylinder. Refer to Master Cylinder Bench Bleeding .
  2. Ensure the retainer (3) and the wiring harness bracket (2) are properly seated on the hydraulic brake booster (4).
    3. Fig 1: View Of Booster Assembly, Wiring Harness Bracket & Spacer
    GM363525Courtesy of GENERAL MOTORS CORP.
  3. Install the master cylinder (1).
    4. Fig 2: Master Cylinder & Nuts
    GM360967Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  4. Install the master cylinder nuts.

    Tighten:  Tighten the nuts to 36 N.m (27 lb ft).

  5. Remove the rubber cap or plug from the exposed brake pipe fitting ends.
  6. Connect the brake pipes.

    Tighten:  Tighten the pipe fittings to 25 N.m (18 lb ft).

  7. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding (Manual)  or Hydraulic Brake System Bleeding (Pressure) .
  8. Release the park brake.
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