EXHAUST SYSTEM REMOVAL/INSTALLATION [SKYACTIV-D 2.2]

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Warning
•  A hot engine and exhaust system can cause severe burns. Turn off the engine and wait until they are cool before removing the exhaust system.
Caution
•  Perform exhaust gas temperature sensor removal/installation only when inspection or replacement is required, such as when DTCs for the sensor are displayed, because it may cause exhaust gas leakage. If the exhaust gas temperature sensor is removed/installed once, always verify that there is no exhaust gas leakage after reinstallation.
Note
•  If the catalytic converter is replaced, perform the “Operation After Replacing Catalytic Converter” procedure.

Operation After Replacing Catalytic Converter

1.  If the catalytic converter is replaced, perform the following procedure.

STEP

ACTION

PAGE/CONDITION
1
Perform DPF data reset procedure.
(See DIESEL PARTICULATE FILTER DATA RESET [SKYACTIV-D 2.2].)
2
Wait for 20 s.
—
3
Perform KOEO self-test procedure.
(See KOEO/KOER SELF TEST [SKYACTIV-D 2.2].)
4
Perform KOER self-test procedure.
(See KOEO/KOER SELF TEST [SKYACTIV-D 2.2].)
5
Perform fuel injector injection amount correction.
(See FUEL INJECTOR INJECTION AMOUNT CORRECTION [SKYACTIV-D 2.2].)
6
Perform compulsory diesel particulate filter regeneration.
(See COMPULSORY DIESEL PARTICULATE FILTER REGENERATION [SKYACTIV-D 2.2].)
7
Clear the DTCs.
(See OBD READ/CLEAR DIAGNOSTIC TEST RESULTS [SKYACTIV-D 2.2].)


Exhaust System Removal/Installation

1.  Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].)

2.  Remove in the order shown in the figure.

3.  Remove the exhaust system insulator. (See Exhaust system insulator removal/installation.)

4.  Install in the reverse order of removal.

Step 1

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1
Main silencer
2
Tunnel member
3
Middle pipe
4
Plate

Step 2

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1
Catalytic converter insulator
(See Catalytic converter insulator removal note.)
(See Catalytic converter insulator installation note.)
2
Insulator
3
Exhaust hose
4
Catalytic converter upper bracket
(See Catalytic converter upper bracket installation note.)
5
Catalytic converter lower bracket
(See Catalytic converter lower bracket removal note.)
(See Catalytic converter bracket installation note.)
6
Catalytic converter
(See Catalytic converter removal note.)
(See Catalytic converter installation note.)
(See Operation After Replacing Catalytic Converter.)


Exhaust system insulator removal/installation

1.  Remove in the order shown in the figure.

2.  Install in the reverse order of removal.

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1
Insulator (rear)
(See Insulator (rear) removal note.)
2
Insulator (middle)
3
Insulator (front)


Insulator (rear) removal note

Note
•  If re-installed, use the same rivets.

1.  Using a hammer and punch (diam. 2—2.8 mm{0.08—0.11 in}), punch out the mandrel.

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2.  Pull out and remove the flange using a drill (diam. 5 mm {0.2 in}).

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Catalytic converter insulator removal note

1.  Remove the battery. (See BATTERY REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

2.  Remove the catalytic converter insulator.


Catalytic converter lower bracket removal note

1.  Remove the front crossmember. (See FRONT CROSSMEMBER REMOVAL/INSTALLATION [SKYACTIV-D 1.5, SKYACTIV-D 2.2].)

2.  Remove the catalytic converter lower bracket.


Catalytic converter removal note

1.  Disconnect the exhaust gas temperature sensor No.2 connector.

2.  Disconnect the exhaust gas sensor No.3 connector.

3.  Remove the exhaust gas sensor No.3 wiring harness installation nuts. (See EXHAUST GAS TEMPERATURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

4.  Disconnect the A/F sensor connector.

5.  Remove the catalytic converter.


Catalytic converter installation note

1.  Temporarily tighten bolt and nuts shown in the figure.

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2.  Tighten the bolt and nuts in the other shown in the figure.

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Catalytic converter installation bolt and nuts tightening torque
45—62 N·m {4.6—6.3 kgf·m, 34—45 ft·lbf}

3.  After installation, verify that the tightening torque for the bolt and nuts is correct.


Catalytic converter bracket installation note

Note
•  When installing the catalytic converter bracket, always use the following procedure.

1.  Temporarily tighten bolts 1 and bolt 2 shown in the figure.

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2.  Tighten bolts 1 shown in the figure.

Catalytic converter upper bracket installation bolt (engine side) tightening torque
38—51 N·m {3.9—5.2 kgf·m, 29—37 ft·lbf}

3.  Tighten bolts 2 shown in the figure.

Catalytic converter upper bracket installation bolt (catalytic converter side) tightening torque
38—51 N·m {3.9—5.2 kgf·m, 29—37 ft·lbf}

4.  After installation, verify that the tightening torque for bolts is correct.

5.  Temporarily tighten bolts 3 and bolt 4 shown in the figure.

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6.  Tighten the bolts in the order shown in the figure.

Catalytic converter lower bracket installation bolt tightening torque
38—51 N·m {3.9—5.2 kgf·m, 29—37 ft·lbf}

7.  Temporarily tighten bolts 5 and bolt 6 shown in the figure.

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8.  Tighten the bolts in the order shown in the figure.

Catalytic converter lower bracket installation bolt tightening torque
38—51 N·m {3.9—5.2 kgf·m, 29—37 ft·lbf}

9.  After installation, verify that the tightening torque for bolts is correct.


Catalytic converter upper bracket installation note

Note
•  Set the catalytic converter upper bracket to the bracket surface on the catalytic converter and cylinder head sides and install it.


Catalytic converter insulator installation note

1.  Temporarily tighten the catalytic converter insulator installation bolts.

2.  Tighten the bolts in the order shown in the figure.

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Catalytic converter insulator installation bolt tightening torque
8—10 N·m {82—101 kgf·cm, 71—88 in·lbf}