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Home >> Saab >> 2011 >> 9-3X Standard >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Intake System >> Repair Instructions >> Check valve, crankcase ventilation, checking/replacement

Check valve, crankcase ventilation, checking/replacement

  1. Remove Throttle body actuator unit (604). See THROTTLE BODY ACTUATOR (604) .
  2. Check the function of the check valve using 30 14 883 Pressure/vacuum pump. Connect the pump with a suitable nozzle to the hole for the check valve.
    Fig 1: Checking Check Valve
    G06148668Courtesy of SAAB-SCANIA OF AMERICA, INC.
  3. Is it possible to pump up a pressure?

    Yes:  The check valve is in order. Refit the throttle body.

    No:  The check valve is faulty and must be replaced.

    Go to step  4.

  4. Remove the intake manifold, intake manifold with SAI.
  5. Press out the check valve.
    Fig 2: Removing Check Valve
    G06148669Courtesy of SAAB-SCANIA OF AMERICA, INC.
  6. Fit a new check valve.
    Fig 3: Installing Check Valve
    G06148670Courtesy of SAAB-SCANIA OF AMERICA, INC.
  7. Fit the intake manifold, intake manifold with SAI.
  8. Fit Throttle body actuator unit (604). See THROTTLE BODY ACTUATOR (604)
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