300Tdi Discovery
EMISSION CONTROL
5
REPAIR
Rear sensors
9. Release sensor cable from clips.
10. Release multiplug from bracket and disconnect.
11. Unscrew and remove sensor from exhaust pipe
using special tool LRT-12-047 (LST134).
Refit
12. Ensure mating faces are clean.
NOTE: New HO2S is supplied pre-treated
with anti-seize compound.
13. If refitting existing HO2S, coat threads with
anti-seize compound.
CAUTION: Do not allow anti-seize
compound to come into contact with HO2S
nose or enter exhaust system.
14. Position HO2S with new sealing washer on
exhaust pipe. Tighten to
20 Nm using special
tool LRT-12-047 (not RH front sensor).
15. Reconnect multiplug to engine harness and
secure to bracket.
16. RH front sensor only:
Place coil bracket in position and fit nuts. Tighten
to
8 Nm.
CAUTION: Ensure sensor leads are
secured using clips provided. Failure to
correctly secure leads could result in
damage to HO2S.
17. Remove stands. Lower vehicle.
