Heated Oxygen Sensor After Catalytic Converter, Bank 1

Heated Oxygen Sensor after Catalytic Converter, Bank 1

Special tools, testers and auxiliary items required

• Ring Spanner 7-piece Set (3337)





• Engine/Transmission Jack (V.A.G 1383 A)





Removing

• All cable ties unfastened or cut open on removal are to be re-attached in same position on installation.

- Remove rear engine cover - arrows -.





- Remove cover - 1 - on right side of engine compartment.





- Remove air hose - arrows -.





- Take connectors - 1 - to - 4 - out of holder on right side of bulkhead.





- Disconnect connector - 4 -.

- Lay free Heated Oxygen sensor (HO2S) wiring downward.

- Remove right front wheel.

- Remove bolts - arrows - for exhaust pipe of auxiliary/additional heater at noise insulation, on vehicles with auxiliary heater.





- Unfasten quick-release fasteners - 1 -, remove bolts - 2 - and detach noise insulation.





- Remove holder screws for noise insulation - arrows -.





- Detach universal mount (VAG 359/2) from Engine/Transmission Jack (V.A.G 1383 A) and place wooden block - arrow - on press tool instead.





- Support rear cross member using Engine/Transmission Jack (V.A.G 1383 A).

- Remove bolts - 1 - and - 2 -, then bolts - 3 - and - 4 -.

- Slowly lower rear cross member using engine/transmission jack V.A.G 1383 A, until distance between rear cross member and body is equal to dimension " x".





• Dimension x = 60 mm

• Transmission must not be lowered any further, as joint of axle shaft and decoupling elements of exhaust system could be damaged.

- Remove heat shield - arrow - for right drive axle.





- Remove connecting rod - 2 -.





- Remove socket-head bolt - 1 -.

- Lay free Heated Oxygen Sensor (HO2S) wires - arrows - at locations marked on transmission.





• Illustration shows engine/transmission assembly removed.

- Remove Heated Oxygen Sensor (HO2S) - 1 - using special Ring Spanner 7-Piece Set (3337).





Installing

Install in reverse order, paying attention to the following:

• Thread of new Heated Oxygen Sensor (HO2S) is coated with assembly paste which must not be allowed to go into openings in probe.

• Re-attach all cable ties at same location on installation.

• Secure all hose connections with standard hose clamps.

- Install subframe.

- Perform alignment of exhaust system.

Tightening Specifications





* If a Heated Oxygen Sensor (HO2S) is to be re-used, grease thread only with hot bolt paste. This must not be allowed to go into openings in probe.