Subaru Impreza 2002 Service Manual page 832

15.Rear Oxygen Sensor
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Disconnect the connector from rear oxygen sen-
sor.
3) Lift-up the vehicle.
4) Apply SUBARU CRC or its equivalent to the
threaded portion of rear oxygen sensor, and leave
it for 1 minute or more.
SUBARU CRC (Part No. 004301003)
5) Remove the rear oxygen sensor.
CAUTION:
When removing the oxygen sensor, wait until
the exhaust pipe cools, otherwise it will dam-
age exhaust pipe.
REAR OXYGEN SENSOR
B: INSTALLATION
1) Before installing the 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 by JET LUBE
CAUTION:
Never apply anti-seize compound to the protec-
tor of rear oxygen sensor.
G6M0095
2) Install the rear oxygen sensor.
Tightening torque:
21 N·m (2.1 kgf-m, 15.2 ft-lb)
B2M4244
3) Lower the vehicle.
4) Connect the connector to rear oxygen sensor.
B2M0741
FU-49
FUEL INJECTION (FUEL SYSTEMS)
B2M0742A
B2M0741
B2M4244