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Home >> Subaru >> 2010 >> Legacy Premium, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 14 (Exhaust System - Exhaust (H4DOTC - 2.5L DOHC Turbo)) >> Front Exhaust Pipe >> Installation

Front Exhaust Pipe: Installation

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  1. While holding the front exhaust pipe with transmission jack, set the front exhaust pipe, and install the nuts which hold the front exhaust pipe to the cylinder head exhaust port.
    NOTE: Use a new gasket.

    Tightening torque: 

    42.5 N.m (4.3 kgf-m, 31.3 ft-lb) 

    Fig 1: Locating Front Exhaust Pipe Nuts
    G06649534Courtesy of SUBARU OF AMERICA, INC.
  2. Attach the bolt which holds the turbocharger stay.

    Tightening torque: 

    33 N.m (3.4 kgf-m, 24.3 ft-lb) 

    Fig 2: Locating Bolts And Turbocharger Stay
    G06649533Courtesy of SUBARU OF AMERICA, INC.
  3. Set the oil catch tank to the turbocharger, and attach the bolt and nut which secure the oil catch tank to the turbocharger and oil catch tank stay.
    NOTE:
    • Use a new gasket.
    • When installing the oil catch tank, tighten to the specified torque in the alphabetical order shown in the figure.

    Tightening torque: 

    T1:6.4 N.m (0.7 kgf-m, 4.7 ft-lb) 

    T2:10.5 N.m (1.1 kgf-m, 7.7 ft-lb) 

    Fig 3: Identifying Oil Catch Tank
    G06649537Courtesy of SUBARU OF AMERICA, INC.
  4. Install the engine cover.

    Tightening torque: 

    6.4 N.m (0.7 kgf-m, 4.7 ft-lb) 

    Fig 4: Locating Engine Cover
    G06649538Courtesy of SUBARU OF AMERICA, INC.
  5. Install the center exhaust pipe (rear) and temporarily tighten the bolt which holds center exhaust pipe (rear) to the hanger bracket.
    Fig 5: Locating Center Exhaust Pipe (Rear) Bolt
    G06649530Courtesy of SUBARU OF AMERICA, INC.
  6. Install the rear exhaust pipe to the center exhaust pipe (rear).
    NOTE: Use a new gasket.

    Tightening torque: 

    18 N.m (1.8 kgf-m, 13.3 ft-lb) 

    Fig 6: Locating Rear Exhaust Pipe
    G06649529Courtesy of SUBARU OF AMERICA, INC.
  7. Assemble the center exhaust pipe (rear) to the center exhaust pipe (front).
    NOTE: Use a new gasket.

    Tightening torque: 

    42.5 N.m (4.3 kgf-m, 31.3 ft-lb) 

    Fig 7: Locating Center Exhaust Pipe (Rear) Bolts
    G06649528Courtesy of SUBARU OF AMERICA, INC.
  8. Tighten the bolts which hold center exhaust pipe (rear) to the hanger bracket.

    Tightening torque: 

    35 N.m (3.6 kgf-m, 25.8 ft-lb) 

    Fig 8: Locating Center Exhaust Pipe (Rear) Bolt
    G06649530Courtesy of SUBARU OF AMERICA, INC.
  9. Install the bolts which secure the intake duct to the turbocharger, and connect the air control hose (A).
    NOTE:
    • Use new O-rings.
    • Be careful not to pinch the O-ring.

    Tightening torque: 

    6.4 N.m (0.7 kgf-m, 4.7 ft-lb) 

    Fig 9: Locating Air Control Hose
    G06649543Courtesy of SUBARU OF AMERICA, INC.
  10. Install the bolt which holds oil inlet pipe C (C) and oil inlet pipe A (A), and install oil inlet pipe B (B) to oil inlet pipe A (A).
    CAUTION: In order to prevent damaging the oil inlet pipe, fix the section (a) shown in the figure when tightening the oil inlet pipe flare nut, and avoid the part from rotating together while tightening the nut.
    Fig 10: Identifying Oil Inlet Pipe A
    G06648571Courtesy of SUBARU OF AMERICA, INC.

    Tightening torque: 

    T1: 6.4 N.m (0.7 kgf-m, 4.7 ft-lb) 

    T2: 20 N.m (2.0 kgf-m, 14.8 ft-lb) 

    Fig 11: Identifying Oil Inlet Pipe B, Oil Inlet Pipe C And Oil Inlet Pipe A
    G06648584Courtesy of SUBARU OF AMERICA, INC.
  11. Install the under cover. Ref. to INSTALLATION , Front Under Cover.
  12. Lower the vehicle.
  13. Install the engine coolant hose to the clip (A), and install the bolts which secure the intake duct to the turbocharger.

    Tightening torque: 

    16 N.m (1.6 kgf-m, 11.8 ft-lb) 

    Fig 12: Locating Intake Duct Bolt
    G06649524Courtesy of SUBARU OF AMERICA, INC.
  14. Install the radiator sub fan motor assembly. Ref. to INSTALLATION , Radiator Sub Fan and Fan Motor.
  15. Connect the engine coolant hoses to the water tank pipe and water pump.
    Fig 13: Locating Engine Coolant Hose
    G06649523Courtesy of SUBARU OF AMERICA, INC.
  16. Connect connectors to the front oxygen (A/F) sensor and rear oxygen sensor, and secure the front oxygen (A/F) sensor harness and rear oxygen sensor harness with the clip (A).
    Fig 14: Identifying Front Oxygen (A/F) Sensor Harness And Rear Oxygen Sensor Harness
    G06649329Courtesy of SUBARU OF AMERICA, INC.
  17. Install the air intake duct. Ref. to INSTALLATION , Air Intake Duct.
  18. Connect the ground cable to battery.
    Fig 15: Connecting Ground Cable To Battery
    G06649549Courtesy of SUBARU OF AMERICA, INC.
  19. Fill engine coolant. Ref. to FILLING OF ENGINE COOLANT , REPLACEMENT, Engine Coolant.
  20. Install the collector cover.