911 Turbo AWD F6-3600cc 3.6L SOHC Twin Turbo (1997)
O2 Connector
2. Unplug, unlock and separate oxygen sensor connection (black connector).
3. Drain engine oil at turbocharger oil tray.
4. Remove oil return line between turbocharger and oil pump bracket.
O2 Sensor
5. Detach oxygen sensor, e.g. using open-ended ring wrench 4681-3 by Hazet.
INSTALLATION
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Screw in oxygen sensor, at the same time turning cable.
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Tightening torque: 50 - 60 Nm (37 - 44 ft lb.)
NOTE: Other values for "Hazet special tool 4681-3": Tightening torque: 38 - 46 Nm (28 - 34 ft lb.)