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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 >> Installation Procedure

Installation Procedure

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    Fig 1: Brake Master Cylinder Adapter
    GM1966263Courtesy of GENERAL MOTORS CORP.
  1. Install the master cylinder adapter gasket, if removed.
  2. Install the brake master cylinder adapter (1).
  3. NOTE: Refer to Fastener Notice .
    Fig 2: Brake Pedal Bracket Nuts
    GM1892257Courtesy of GENERAL MOTORS CORP.
  4. Install the 4 brake pedal bracket nuts (1).

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

  5. Fig 3: Stoplamp (Brake Light) Switch
    GM1892252Courtesy of GENERAL MOTORS CORP.
  6. Connect the brake pedal pushrod while simultaneously installing the stoplamp switch (1).
  7. Fig 4: Brake Pushrod Retainer
    GM1892250Courtesy of GENERAL MOTORS CORP.
  8. Install the brake pushrod retainer (1).

    Rotate the brake pushrod retainer 360 degrees to ensure the retainer is fully engaged in the brake pedal pushrod pivot pin groove.

  9. Fig 5: Brake Pushrod Retainer Bolt
    GM1892248Courtesy of GENERAL MOTORS CORP.
  10. Install the brake pushrod retainer bolt (1), if equipped.

    Tighten:  Tighten the bolt to 10 N.m (89 lb in).

  11. Fig 6: Master Cylinder Seal
    GM1892241Courtesy of GENERAL MOTORS CORP.
  12. Install the master cylinder primary piston position sensor, if removed. Refer to Brake Master Cylinder Primary Piston Position Sensor Replacement .
  13. Connect the master cylinder primary piston position sensor electrical connector.
  14. Install the master cylinder seal (1), if removed.

    Ensure the brake master cylinder seal is fully seated in the groove on the master cylinder housing.

  15. Fig 7: Master Cylinder
    GM1966261Courtesy of GENERAL MOTORS CORP.
  16. Position the master cylinder (1) to the master cylinder adapter.
  17. Fig 8: Master Cylinder Nuts
    GM1966259Courtesy of GENERAL MOTORS CORP.
  18. Install 2 new master cylinder nuts (1).

    Tighten:  Tighten the nuts to 33 N.m (24 lb ft).