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Home >> Subaru >> 2019 >> WRX STI Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Intake System (Induction) And Turbocharger (Except For STI)) >> Turbocharger >> Inspection >> Waste Gate Actuator

Waste Gate Actuator

WARNING: This page is about a different variant/trim than selected.
  1. Remove the front exhaust pipe. Refer to EXHAUST (EXCEPT FOR STI)>FRONT EXHAUST PIPE>REMOVAL .
  2. Remove the exhaust cover.
    G09480122Courtesy of SUBARU OF AMERICA, INC.
  3. Remove the vacuum control hose (B) from the waste gate actuator (A) of the turbocharger, and connect the Mighty Vac to the waste gate actuator (A).
    G13258895Courtesy of SUBARU OF AMERICA, INC.
  4. Pressurize slowly with the Mighty Vac, and check the pressure when the control rod stroke (D) becomes 1±0.15 mm (0.0394±0.0059 in). If it is not within the standard, replace the turbocharger assembly.
    CAUTION: Do not pressurize over 112.7 kPa (1.15 kg/cm2 , 16.34 psi) to prevent damaging the waste gate actuator.

    Operating pressure (control rod stroke 1±0.15 mm (0.0394±0.0059 in)): 

    Standard 

    84.0 - 88.0 kPa (0.86 - 0.90 kg/cm2 , 12.18 - 12.76 psi)

  5. 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)