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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1952 (Antilock Brake System - Hybrid 3.6L (Hp5)) >> Repair Instructions >> Brake Pipe Manifold Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: The high pressure accumulator (HPA) and the chambers of the brake modulator assembly to which it attaches, store brake fluid at extremely high pressures. Fluid pressure must be relieved before attempting to service the HPA. Ensure that the recommended procedures are followed to relieve system pressure, including using the manual pressure release steps. Failure to properly follow procedures to depressurize the system may result in personal injury.
WARNING: Refer to Brake Fluid Irritant Warning .
CAUTION: Refer to Brake Fluid Effects on Paint and Electrical Components Caution .
    NOTE: The ignition must be in the OFF position, without pausing at ACCESSORY, and without applying the brake pedal to ensure the brake modulator and high pressure accumulator (HPA) pressure relief occurs. This process will take approximately 1 to 3 minutes.
  1. Turn the ignition to OFF, without pausing at ACCESSORY, and remove the ignition key.
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  3. Remove the brake pressure modulator valve assembly. Refer to Brake Pressure Modulator Valve Replacement .
    4. Fig 1: Master Cylinder Return Hose Fitting, Master Cylinder Supply Hose Fitting And O-Ring Seals
    GM2192990Courtesy of GENERAL MOTORS CORP.
  4. Remove the master cylinder return hose fitting (1).
  5. Remove the master cylinder supply hose fitting (2).
  6. Remove and discard the O-ring seals (3).
    7. Fig 2: Brake Pipe Manifold Bolt
    GM2192991Courtesy of GENERAL MOTORS CORP.
  7. Remove the brake pipe manifold bolts (1).
    8. Fig 3: Brake Pipe Manifold
    GM2192992Courtesy of GENERAL MOTORS CORP.
  8. Remove the brake pipe manifold (1).
    9. Fig 4: Upper Return And Supply Transfer Tube O-Ring Seals
    GM2192993Courtesy of GENERAL MOTORS CORP.
  9. Remove the upper return and supply transfer tube O-ring seals (1).
  10. Remove the return and supply transfer tubes (2).
  11. Remove the lower return and supply transfer tube O-ring seals (3).
    12. Fig 5: Upper Transfer Tube O-Ring Seals, Transfer Tubes And Lower Transfer Tube O-Rings Seals
    GM2192994Courtesy of GENERAL MOTORS CORP.
  12. Remove and discard the 5 upper transfer tube O-ring seals (1).
  13. Remove the 5 transfer tubes (2).
  14. Remove discard the 5 lower transfer tube O-rings seals (3).
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