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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 98 (Engine Cooling System) >> Repair Instructions >> Coolant Air Bleed Pipe Assembly Replacement (RPOs LC9/LY5/LMG/L76/L92) >> Removal Procedure

Removal Procedure

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    Fig 1: View Of Radiator Vent Inlet Hose & Clamps
    GM1699347Courtesy of GENERAL MOTORS CORP.
  1. If replacing the rear coolant air bleed covers, remove the intake manifold. Refer to Intake Manifold Replacement (RPOs LC9/LMG/LY5/L76/L92) or Intake Manifold Replacement (RPOs LY2/LY6) . Otherwise proceed to the next step.
  2. Remove the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .
  3. Drain the cooling system. Refer to Draining and Filling Cooling System .
  4. Reposition the radiator vent inlet hose clamp (1) at the coolant air bleed pipe fitting.
  5. Remove the radiator vent inlet hose (2) from the coolant air bleed pipe fitting.
    6. Fig 2: Engine Coolant Air Bleed Pipe
    GM1401993Courtesy of GENERAL MOTORS CORP.
  6. Remove the coolant air bleed pipe bolts (309) (intake manifold shown removed for clarity).
  7. Remove the coolant air bleed pipe (307) and seals (308).
    8. Fig 3: Engine Coolant Air Bleed Cover Bolts
    GM1402001Courtesy of GENERAL MOTORS CORP.
  8. Remove the coolant air bleed cover bolts (312), if required.
  9. Remove the coolant air bleed covers (313) and seals (308), if required.
    10. Fig 4: View Of Coolant Air Bleed Pipe Seal
    GM1552485Courtesy of GENERAL MOTORS CORP.
  10. Remove the seals (308) from the coolant air bleed pipe and/or covers.
  11. Discard the seals.
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