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Home >> Audi >> 2016 >> S5 Prestige, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 77 (Engine Intake System (Induction) And Turbocharger (H4DOTC)) >> Turbocharger >> Inspection >> Waste Gate Actuator

Waste Gate Actuator

WARNING: This page is about a different car, the 2012 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the collector cover.
  2. Remove the intercooler. < Ref. to REMOVAL , Intercooler. >
  3. Remove the turbocharger upper cover.
    Fig 1: Turbocharger Upper Cover And Bolts
    G07680938Courtesy of SUBARU OF AMERICA, INC.
  4. Remove the boost hose (B) from the waste gate actuator (A) of the turbocharger, and connect the Mighty Vac to the waste gate actuator (A).
    Fig 2: Checking Pressure When Control Rod Stroke Becomes 1 mm (0.04 in)
    G07680939Courtesy of SUBARU OF AMERICA, INC.
  5. Pressurize slowly with the Mighty Vac, and check the pressure when the control rod stroke (D) becomes 1 mm (0.04 in). If it is not within the standard, replace the turbocharger assembly.
    CAUTION: Do not pressurize over 56.0 kPa (0.57 kgf/cm2 , 8.12 psi) to prevent damaging the waste gate actuator.

    Operating pressure (control rod stroke 1 mm (0.04 in)): 

    Standard 

    44.0 - 46.6 kPa (0.45 - 0.48 kgf/cm 2  , 

    6.38 - 6.76 psi) 

  6. After inspection, install the related parts in the reverse order of removal.

    Tightening torque: 

    7.5 N.m (0.8 kgf-m, 5.5 ft-lb) 

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