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Engine Intake System (H4DOTC) (Except Sti): Removal & Installation Subaru Impreza GH

Mechanical 10 illustrations ~281 words

INSTALLATION

Install in the reverse order of removal.

CAUTIONBe sure to use SUBARU genuine air cleaner element depending on the engine type when replacing the air cleaner elements. Otherwise engine performance may be damaged.

Note. Check that there are no foreign objects in the air cleaner case.

REMOVAL

Remove the clip which secures the air intake duct, and remove the air intake duct.

Scheme 325

Scheme 325: REMOVAL

Install in the reverse order of removal.

  1. Disconnect the ground cable from battery.
  2. Remove the intake manifold. Ref. to «REMOVAL»(ref-357241-S20017998592010031100000) , Intake Manifold.
  3. Remove the sensor, engine harness and fuel pipe attached to the intake manifold. Ref. to «DISASSEMBLY»(ref-357241-S40787409122010031100000) , Intake Manifold.
  4. Remove the intake duct from intake manifold.

Scheme 326

Scheme 326

Install in the reverse order of removal.

Tightening torque

17 N.m (1.7 kgf-m, 12.5 ft-lb)

Scheme 327

Scheme 327: REMOVAL

Scheme 328

Scheme 328

Scheme 329

Scheme 329
  1. Disconnect the air by-pass pipe (A) and vacuum hose (B) from the air by-pass valve.
  2. Loosen the clamp (C) which connects the intercooler and intake duct.
  3. Remove the bolts which secure the intercooler to the turbocharger.
  4. Remove the bolts which secure the intercooler to the intercooler stay, and remove the intercooler.
  5. Remove the brake booster vacuum hose from the clip (A), and remove the intercooler stay.

Scheme 330

Scheme 330

Install in the reverse order of removal.

Note. Use new O-rings. Be careful not to pinch the O-ring.

Tightening torque

16 N.m (1.6 kgf-m, 11.8 ft-lb)

Scheme 331

Scheme 331: INSTALLATION

Tightening torque

3 N.m (0.3 kgf-m, 2.2 ft-lb)

Scheme 332

Scheme 332
  1. Disconnect the air by-pass pipe (B) and vacuum hose (C) from the air by-pass valve (A).
  2. Remove the air by-pass valve (A) from the inter-cooler.

Scheme 333

Scheme 333

Install in the reverse order of removal.

Note. Use new O-rings. Be careful not to pinch the O-ring.

Tightening torque

6.5 N.m (0.7 kgf-m, 4.8 ft-lb)

Scheme 334

Scheme 334: INSTALLATION