Front catalytic converter, US/CA, A20NFT
Front catalytic converter, US/CA, A20NFT |
To remove |
1. |
Unplug the connectors for the oxygen sensors (A) and carefully take down the cables.
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2. |
Remove the heat shield (B) over the turbocharger.
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3. |
Remove the upper oxygen sensor (A).
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4. |
Remove the nuts (B) for the catalytic converter connection to the turbocharger.
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5. |
Raise the car.
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6. |
Remove the front spoiler shield
.
Remove Chassis reinforcement, front subframe, CV, Z19DTH/DTR, A20NFT/LHU . |
7. |
Remove the lower turbocharger pressure pipe (A).
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8. |
Remove the nuts to the rear catalytic converter (A).
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9. |
Remove the exhaust pipe's rubber mountings (B). Lift down the exhaust pipe.
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10. |
Remove the heat shield over the catalytic converter (A).
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11. |
Remove the lower oxygen sensor (B).
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12. |
Remove the catalytic converter (C) fixing from the engine block and from the catalytic converter.
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13. |
Remove the catalytic converter.
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To fit |
1. |
Lubricate the turbocharger studs with
30 20 971 Screw-thread paste
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2. |
Lift up the catalytic converter, align its bracket to the studs on the engine block and align the catalytic converter to the turbocharger connection.
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3. |
Insert the catalytic converter bracket bolts (C) into the engine block and new nuts on the studs.
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4. |
Lower the car.
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5. |
Fit the catalytic converter (B) with new nuts so that it rests evenly against the turbo.
Tightening torque 25 Nm (18.5 lbf ft) |
6. |
Raise the car.
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7. |
Tighten the catalytic converter nuts and bolts a last time.
Tightening torque 25 Nm (18.5 lbf ft) |
8. |
Lubricate the threads sparingly with
30 20 971 Screw-thread paste
and fit the lower oxygen sensor (B).
Tightening torque 40 Nm (30 lbf ft).
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9. |
Lift up the oxygen sensor cables.
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10. |
Fit the heat shield (A) over the catalytic converter.
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11. |
Fit the rear catalytic converter to the front catalytic converter.
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12. |
Hang the exhaust pipe up with the rubber mountings (B).
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13. |
Tighten the connection between the front and rear catalytic converters (A).
Tightening torque 25 Nm (18.5 lbf ft) |
14. |
Fit the turbo delivery pipe (A). Fit the
Spoiler shield, front
.
CV: Fit Chassis reinforcement, front subframe, CV, Z19DTH/DTR, A20NFT/LHU |
15. |
Lower the car.
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16. |
Lubricate the threads sparingly with
30 20 971 Screw-thread paste
and fit the upper oxygen sensor (A).
Tightening torque 40 Nm (30 lbf ft). |
17. |
Plug in and secure the oxygen sensor connectors (A).
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18. |
Fit the turbocharger heat shield (B).
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