Oxygen Sensor, Replacing (M52 And M62 Engine) - BMW 5251 Service Manual

Exhaust System
Label and disconnect sensor harness connectors (arrows).
CAUTlOI\C
Label connectors so that front and rear connectors are not
mixed up.
-
Detach harness from guides and brackets.
-
Remove oxygen sensor from exhaust manifold using special
tool 11 7 030 or equivalent.
-
Installation is reverse of removal
New sensor threads come coated with anti-seize paste.
If reusing old sensor, apply thin coat of anti-seize paste to
threads only. Do not contaminate tip of sensor with paste
or lubricants of any sort.
Install harness and connector in original location.
Tightening torque
Oxygen sensor to manifold 50 Nm
(37
ft-lb)
Oxygen sensor, replacing
(M52 and M62 engine)
The sensors are installed at the front and rear of the catalytic
converters.
I
WARNING-
I
I
Allow components to cool before servicing.
I
Using BMW scan tool DlSplus or equivalent, read out and
clear ECM fault codes.
Detach harness from guides and brackets.
Remove oxygen sensors (arrows) from exhaust using spe-
cial tool l l 7 030 or equivalent.
Installation is reverse of removal
New sensor threads come coated with anti-seize paste.
If reusing a sensor, apply thin coat of anti-seize paste to
threads only. Do not contaminate tip of sensor with paste
or lubricants of any sort.
Install harness and connector in original location.
Tightening torque
Oxvaen sensor to manifold
50 Nm
(37
it-lb)