Waste Gate Actuator

Remove the front exhaust pipe. <Ref. to REMOVAL , Front Exhaust Pipe.>
Remove the exhaust cover.

Fig 1: Locating Exhaust Cover Bolts
Courtesy of SUBARU OF AMERICA, INC.
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).

Fig 2: Identifying Waste Gate Actuator, Control Rod, Control Rod Stroke And Vacuum Control Hose
Courtesy of SUBARU OF AMERICA, INC.
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/cm 2 , 12.18 - 12.76 psi)
After inspection, install the related parts in the reverse order of removal.
Tightening torque:

6.4 N.m (0.7 kgf-m, 4.7 ft-lb)