Rear Oxygen Sensor - Subaru Legacy 2004 Service Manual

14.Rear Oxygen Sensor

A: REMOVAL
1) Disconnect the ground cable from battery.
2) Lift-up the vehicle.
3) Disconnect the connector from rear oxygen sen-
sor.
4) Remove the clip holding harness.
5) Apply spray-type lubricant to the threaded por-
tion of rear oxygen sensor, and leave it for one
minute or more.
6) Remove the rear oxygen sensor.
CAUTION:
When removing the rear oxygen sensor, wait
until exhaust pipe cools, otherwise it will dam-
age the exhaust pipe.
Rear Oxygen Sensor
B: INSTALLATION
1) Before installing rear oxygen sensor, apply anti-
seize compound only to the threaded portion of
rear oxygen sensor to make the next removal eas-
ier.
Anti-seize compound:
SS-30 JET LUBE
CAUTION:
Never apply anti-seize compound to the pro-
tector of rear oxygen sensor.
2) Install the rear oxygen sensor.
Tightening torque:
21 N
IN-00203
3) Hold the harness with clip.
4) Connect the connector to rear oxygen sensor.
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5) Lower the vehicle.
6) Connect the battery ground cable to battery.
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FU(H4SO 2.0)-33
FUEL INJECTION (FUEL SYSTEMS)
!
m (2.1 kgf-m, 15.2 ft-lb)
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FU-01116
IN-00203