Center Exhaust Pipe: Installation

Set the center exhaust pipe (front) together with turbocharger upper stay (A), and install stud bolts (3 places) to the turbocharger by using the TORX® socket E10.
NOTE: Use a new gasket.

Tightening torque:

14.7 N.m (1.5 kgf-m, 10.8 ft-lb)

Fig 1: Locating Turbocharger Stud Bolts (3 Places)
Courtesy of SUBARU OF AMERICA, INC.
Temporarily tighten the nuts (3 places) which secure the center exhaust pipe (front) to the turbocharger together with the turbocharger upper stay (A).
NOTE: Use a new self-locking nut.

Fig 2: Locating Front Center Exhaust Pipe Nuts (3 Places)
Courtesy of SUBARU OF AMERICA, INC.
Using ST, install the nut (1 place) which secures the center exhaust pipe (front) to the turbocharger.
NOTE: Use a new self-locking nut.

ST 18283AA010 WRENCH ADAPTER

Tightening torque:

Calculation formula

T = L/(120 mm (4.72 in)+L) x 42.5 N.m (4.3 kgf-m, 31.3 ft-lb)

T: Tightening torque

L: Effective length of torque wrench

NOTE: In the effective length of the torque wrench used is unknown, consult the manufacturer of the torque wrench.

Fig 3: Measuring Length Of Torque Wrench
Courtesy of SUBARU OF AMERICA, INC.
1. Effective length of the ST
2. Effective length of the torque wrench
3. Center of drive angle of the ST
4. Center of drive angle of the torque wrench
5. Center of the position where a force is applied by hand
Fig 4: Locating Front Center Exhaust Pipe To Turbocharger Nut (1 Place)
Courtesy of SUBARU OF AMERICA, INC.
Temporarily tighten the nuts (3 places) which secure the center exhaust pipe (front) to the turbocharger together with the turbocharger stay (A).
Tightening torque:

42.5 N.m (4.3 kgf-m, 31.3 ft-lb)

Fig 5: Locating Front Center Exhaust Pipe Nuts (3 Places)
Courtesy of SUBARU OF AMERICA, INC.
Install the bolt which secures the turbocharger stay, and install the exhaust pipe cover (A) to the center exhaust pipe (front).
Tightening torque:

T1: 7.5 N.m (0.8 kgf-m, 5.5 ft-lb)

T2: 33 N.m (3.4 kgf-m, 24.3 ft-lb)

Fig 6: Locating Exhaust Pipe Cover Bolts
Courtesy of SUBARU OF AMERICA, INC.
Install the center exhaust pipe (rear) and temporarily tighten the bolt which holds center exhaust pipe (rear) to the hanger bracket.

Fig 7: Locating Hanger Bracket Bolt
Courtesy of SUBARU OF AMERICA, INC.
Install the bolts, springs, and nuts which secure 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 8: Locating Rear Exhaust Pipe Bolt
Courtesy of SUBARU OF AMERICA, INC.
Install the nuts which secure the center exhaust pipe (front) to the center exhaust pipe (rear).
NOTE: Use a new gasket.

Tightening torque:

42.5 N.m (4.3 kgf-m, 31.3 ft-lb)

Fig 9: Locating Rear Center Exhaust Pipe Nuts
Courtesy of SUBARU OF AMERICA, INC.
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 10: Locating Hanger Bracket Bolt
Courtesy of SUBARU OF AMERICA, INC.
Lower the vehicle.
Install the exhaust pipe stay (B) and water pump pulley cover (A) to the turbocharger stay and water pump, and install the bolts which secure the water pump pulley cover (A) and exhaust pipe stay (B) to the turbocharger stay.
Tightening torque:

T1: 19 N.m (1.9 kgf-m, 14.0 ft-lb)

T2: 33 N.m (3.4 kgf-m, 24.3 ft-lb)

Fig 11: Locating Exhaust Pipe Stay And Water Pump Pulley Cover Bolts
Courtesy of SUBARU OF AMERICA, INC.
Lift up the vehicle.
Connect the connector on the rear oxygen sensor to the engine harness, and connect the ground cable to the exhaust pipe cover.
Tightening torque:

7.5 N.m (0.8 kgf-m, 5.5 ft-lb)

Fig 12: Locating Connector On Rear Oxygen Sensor To Engine Harness
Courtesy of SUBARU OF AMERICA, INC.
Secure the front oxygen (A/F) sensor harness to the water pump pulley cover with the clip (A), and connect the front oxygen (A/F) sensor connector to the engine harness.

Fig 13: Locating Front Oxygen (A/F) Sensor From Engine Harness Connector
Courtesy of SUBARU OF AMERICA, INC.
Install the under cover. Ref. to EXTERIOR/INTERIOR TRIM>Front Under Cover>INSTALLATION .
Lower the vehicle.
Connect the battery ground terminal. Ref. to NOTE>NOTE>BATTERY .
Install the collector cover.