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Home >> Cadillac >> 2018 >> Escalade ESV Platinum, RWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brake System >> Repair Instructions >> Brake Master Cylinder Replacement >> Removal Procedure

Removal Procedure

WARNING:

Refer to Brake Fluid Irritant Warning .

  1. With the engine OFF, apply and release the brake pedal several times until the pedal becomes firm to deplete the brake booster reserve assist.
  2. Remove the driver side front fender rear upper brace. Refer to Front Fender Rear Upper Brace Replacement .
  3. Disconnect the brake fluid level indicator switch electrical connector.
  4. Fig 1: Master Cylinder Secondary Brake Pipe Fitting
    GM3268954Courtesy of GENERAL MOTORS COMPANY
  5. Disconnect the master cylinder secondary brake pipe fitting (1).
  6. Cap the brake pipe fitting and plug the master cylinder outlet port to prevent brake fluid loss and contamination.
  7. Disconnect the master cylinder primary brake pipe fitting (2).
  8. Cap the brake pipe fitting and plug the master cylinder outlet port to prevent brake fluid loss and contamination.
  9. Fig 2: Master Cylinder Nuts
    GM3268961Courtesy of GENERAL MOTORS COMPANY
  10. Remove the master cylinder nuts (1).
  11. Fig 3: Master Cylinder And Power Vacuum Brake Booster
    GM3268964Courtesy of GENERAL MOTORS COMPANY
  12. Remove the master cylinder (1) from the power vacuum brake booster.
  13. Inspect the O-ring seal (2) for damage and replace, if necessary.