B350 1 Ton Van V8-5.9L VIN Z (1992)
Oxygen Sensor: Service and Repair
NOTE:
The oxygen sensor is located above the outlet of the left exhaust manifold.
Heated Oxygen Sensor Electrical Connection
REMOVAL/INSTALLATION
1.
Disconnect the main engine harness from oxygen sensor connector.
CAUTION: Take care not to pull on oxygen sensor wires when servicing the O2 sensor.
WARNING: THE EXHAUST PIPE MAY BE EXTREMELY HOT. AVOID CONTACT WITH THE EXHAUST PIPE WHEN SERVICING
THE OXYGEN SENSOR.
2.
Remove O2 sensor with Tool C-4907.
NOTE: The original O2 sensor threads were coated with an anti-seize compound. The compound must be removed from the threads in the
exhaust manifold prior to sensor installation.
3.
Clean the threads in the exhaust manifold with an 18 mm X 1.5 + 6E tap.
4.
If the original sensor is to be installed, the sensor threads must be coated with an anti-seize compound (Loctite 771-64 or equivalent). New O2
sensors are packaged with compound on the threads and additional compound is not required.
5.
Tighten sensor to 27 Nm (20 ft. lbs.) torque.
