Subaru 2009 IMPREZA Service Manual page 1057

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INTAKE (INDUCTION)

12) Connect the ground cable to battery.

13) Fill engine coolant. <Ref. to CO(H4DOTC)-14,

FILLING OF ENGINE COOLANT, REPLACE-

MENT, Engine Coolant.>

C: INSPECTION

1. WASTE GATE ACTUATOR

• Except for WRX-SS model

1) Remove the intercooler. <Ref. to IN(H4DOTC)-

13, REMOVAL, Intercooler.>

2) Remove the turbocharger upper cover.

3) 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).

(A) Waste gate actuator

(B) Boost hose

(D) Control rod stroke

Turbocharger

IN(H4DOTC)-18

4) Pressurize slowly with the Mighty Vac, and mea-

sure the pressure when the control rod stroke (D)

becomes 1 mm (0.04 in). If it is not within the stan-

dard, replace the turbocharger assembly.

Do not pressurize over 56.0 kPa (0.57 kgf/cm

8.12 psi) to prevent damaging the waste gate

Operating pressure

(Control rod stroke 1 mm (0.04 in)):

44.0 — 46.6 kPa

(0.45 — 0.48 kgf/cm

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)

• WRX-SS model

1) Remove the intercooler. <Ref. to IN(H4DOTC)-

13, REMOVAL, Intercooler.>

2) Remove the turbocharger upper cover.

, 6.38 — 6.76 psi)