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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 210 (Hydraulic Brake System) >> Repair Instructions >> Brake Master Cylinder Adapter Replacement >> Removal Procedure

Removal Procedure

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  1. Place the ignition switch in the OFF position.
  2. Apply the park brake.
    3. Fig 1: Master Cylinder Nuts
    GM1966259Courtesy of GENERAL MOTORS CORP.
  3. Remove the master cylinder nuts (1).

    Discard the master cylinder nuts.

    4. Fig 2: Master Cylinder
    GM1966261Courtesy of GENERAL MOTORS CORP.
  4. Without disconnecting the brake pipes, remove and position aside the master cylinder (1).

    Support the master cylinder with heavy mechanics wire or equivalent.

    5. Fig 3: Master Cylinder Seal
    GM1892241Courtesy of GENERAL MOTORS CORP.
  5. Inspect the master cylinder seal (1) for damage and replace, if necessary.
  6. Disconnect the master cylinder primary piston position sensor electrical connector.
  7. Remove the master cylinder primary piston position sensor, if necessary. Refer to Brake Master Cylinder Primary Piston Position Sensor Replacement .
    8. Fig 4: Brake Pushrod Retainer Bolt
    GM1892248Courtesy of GENERAL MOTORS CORP.
  8. Remove the brake pushrod retainer bolt (1), if equipped.
    9. Fig 5: Brake Pushrod Retainer
    GM1892250Courtesy of GENERAL MOTORS CORP.
  9. Remove the brake pushrod retainer (1).
    10. Fig 6: Stoplamp (Brake Light) Switch
    GM1892252Courtesy of GENERAL MOTORS CORP.
  10. Slide the stoplamp switch (1) off of the brake pedal pushrod pin while simultaneously disconnecting the brake pushrod.
    11. Fig 7: 4 Brake Pedal Bracket Nuts
    GM1892257Courtesy of GENERAL MOTORS CORP.
  11. Remove the 4 brake pedal bracket nuts (1).
    12. Fig 8: Brake Master Cylinder Adapter
    GM1966263Courtesy of GENERAL MOTORS CORP.
  12. Remove the brake master cylinder adapter (1).
  13. Inspect the master cylinder adapter gasket for damage and replace, if necessary.
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