Removing And Installing Oxygen Sensors Ahead Of Catalytic Converter On DFI Engines

Removing And Installing Oxygen Sensors Ahead Of Catalytic Converter On DFI Engines

Technical values










Preliminary work

Cylinder bank 1 to 4

1. Remove air-cleaner element.







2. Remove heat protection panel on the generator. -arrows at front- The heat protection panel remains fitted on the exhaust manifold.
3. Remove primary catalytic converter.

Cylinder bank 5 to 8

1. Remove air-cleaner element
2. Remove underbody panelling under the engine.

Removing oxygen sensor ahead of catalytic converter

Cylinder bank 1 to 4

CAUTION:
The oxygen sensor cable can be damaged if twisted.
- Change in emissions.
- Check Engine light comes on.

- Always expose oxygen sensor cable so that the wire can turn when unscrewing or screwing in the sensor.
- Do not kink cable.










1. Disconnect cable plug on oxygen sensor and release cable around the exhaust manifold and generator.







2. Carefully unscrew oxygen sensor at the exhaust manifold. -1- Use a short open-ended wrench if necessary and tap loose with a hammer.

Cylinder bank 5 to 8

CAUTION:
The oxygen sensor cable can be damaged if twisted.
- Change in emissions.
- Check Engine light comes on.

- Always expose oxygen sensor cable so that the wire can turn when unscrewing or screwing in the sensor.
- Do not kink cable.










1. Disconnect cable plug on oxygen sensor and release cable around the exhaust manifold.







5. Remove oxygen sensor from below at the exhaust manifold using a suitable tool. -1-.


Installing oxygen sensor ahead of catalytic converter

Cylinder bank 1 to 4

1. Carefully coat the thread of the oxygen sensor with 000.043.207.07.







2. Carefully screw in oxygen sensor at the exhaust manifold by hand. -1- Screw on oxygen sensor correctly. Difficult to access with torque wrench. Careful tightening by hand is acceptable. - Tightening torque:45 Nm (33 ftlb.) ±5 Nm (±3.5 ftlb.)

CAUTION:
The oxygen sensor cable can be damaged if twisted.
- Change in emissions.
- Check Engine light comes on.

- Always expose oxygen sensor cable so that the wire can turn when unscrewing or screwing in the sensor.
- Do not kink cable.










3. Route oxygen sensor cable around the exhaust manifold and generator and clip it in.


Cylinder bank 5 to 8

1. Carefully coat the thread of the oxygen sensor with 000.043.207.07.







6. Use a suitable tool to screw the oxygen sensor into the exhaust manifold by hand from below. -1- Screw on oxygen sensor correctly. Tightening torque: 45 Nm (33 ftlb.) ±5 Nm (± 3.5 ftlb.)

CAUTION: The oxygen sensor cable can be damaged if twisted.
- Change in emissions.
- Check Engine light comes on.

- Always expose oxygen sensor cable so that the wire can turn when unscrewing or screwing in the sensor.
- Do not kink cable.










7. Route oxygen sensor cable around the exhaust manifold and clip it in.

Subsequent work

Cylinder bank 1 to 4

1. Fit primary catalytic converter.







2. Fit heat protection panel on the generator. -arrows at front-.
3. Fit air-cleaner element.

Cylinder bank 5 to 8
1. Fit air-cleaner element.
6. Fit underbody panelling under the engine.