CYL 4-6 Behind CAT

Oxygen Sensor Wrenches:

1. Plug-in wrench no. 645Od - 22
2. Open-ended ring wrench no. 4681-2
3. Open-ended ring wrench no. 4681-3
commercially available e.g. by Hazet

REMOVAL
1. Remove charge air cooler, plug-seal pressure hoses.
2. Extract rubber sleeve from engine paneling. To do so, remove A/C compressor from bracket and put it aside.

Connector:

3. Unplug, unlock and separate oxygen sensor connection.
4. Detach oxygen sensor, e.g. using plug-in wrench 6450d-22 by Hazet.

INSTALLATION
- Tightening torque 50 - 60 Nm (37 - 44 ft lb.)