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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Brake System >> Repair Instructions >> Master Cylinder Replacement >> Removal Procedure

Removal Procedure

WARNING:

Refer to Brake Fluid Irritant Warning .

  1. Turn the ignition switch to the OFF position.
  2. Apply and release the brake pedal several times until the brake pedal becomes firm to deplete the power vacuum brake booster vacuum reserve.
  3. Remove the intake manifold cover, if necessary. Refer to Intake Manifold Cover Replacement .
  4. Using a suitable tool, remove and properly dispose of the brake fluid from the master cylinder reservoir.
  5. Without draining the coolant and without disconnecting the hoses, remove and position aside the radiator surge tank. Refer to Radiator Surge Tank Replacement (LEA, LUK) .
  6. If equipped with the manual transmission, disconnect the clutch master cylinder reservoir hose. Refer to Clutch Master Cylinder Reservoir Hose Replacement .
  7. Disconnect the brake fluid level indicator switch electrical connector.
  8. Fig 1: Master Cylinder Primary And Secondary Brake Pipe Fittings
    GM2219332Courtesy of GENERAL MOTORS COMPANY
  9. Disconnect the master cylinder primary brake pipe fitting (1) .
  10. Cap the brake pipe fitting to prevent brake fluid loss and contamination.
  11. Disconnect the master cylinder secondary brake pipe fitting (2) .
  12. Cap the brake pipe fitting to prevent brake fluid loss and contamination.
  13. Fig 2: Master Cylinder Nuts
    GM2221057Courtesy of GENERAL MOTORS COMPANY
  14. Remove the master cylinder nuts (1) .
  15. Fig 3: Master Cylinder & O-Ring Seal
    GM2221059Courtesy of GENERAL MOTORS COMPANY
  16. Remove the master cylinder (1) .
  17. Remove the master cylinder O-ring seal (2) .