Oxygen Sensor Before Catalytic Converter, Bank 1

Oxygen Sensor Before Catalytic Converter, Bank 1

Special tools, testers and auxiliary items required

• Ring Spanner 7-Piece Set for Oxygen Sensor (3337 )

Removing

- Pull rear engine cover off - arrows -.





- Pull front engine cover off - arrows -.





- Remove bolts - arrows -.





- Remove the air duct - 1 - and - 2 -.

- Disconnect check valve - 1 - from air duct hose.





- Remove the air duct hose, thereby loosening the hose clamp - 2 - and opening the clips - arrows -.

- Remove pin from spreader clips - arrow -.





- Remove air filter housing.

- Disconnect the electrical harness connector - 1 - for heated oxygen sensor (G39) and free up wire.





• Ignore - 2 -.

- Remove the oxygen sensor - 2 - with the ( 3337).





• To improve clarity, the removed engine is shown.

Installing

Installation is in reverse order of removal, note the following:

• New oxygen sensors are coated with assembly paste; the paste must not get into slots of oxygen sensor body.

• When reinstalling the previously used oxygen sensor, coat thread with hot bolt paste. Paste must not get on to slits of sensor body.

• Electrical wire of oxygen sensor must always be secured in the same position when installing so that contact with the exhaust pipe is avoided.

Tightening Specifications