Renew Oxygen Sensors And Reset Service Interval Counter - Triumph TR7 Owner's Manual

(1) Depressunse the fuel system by disconnecting the fuel
pump ground lead and cranking the engine for several
seconds Reconnect the fuel pump earth lead.
(2) Release the fuel pipes from the filter. clamping them to
prevent spIllage.
(3) Slacken off the filter clamp. bracket fastenings.
(4) Withdraw the filter noting Its
poSition
lor refitting
(5) Fit
a new fitter and reverse Instructions (2) to (4).
Check Condition of Fuel Filler Cap Seal
MAINTENANCE AND ADJUSTMENTS
Renew Oxygen Sensorlsl and Reset Service Interval
Counter
The oxygen sensor is located on the exhaust manifold on
TR7 models and one sensor is located on each exhaust
pipe forward of the catalyst, on TR8 and Rover 3500
models.
To renew the sensor(s):-
(1) Disconnect the electrical lead from the sensor.
(2) Unscrew the sensor from the exhaust manifold/pipe.
taking care not to strain the exhaust system
(3) Lubflcate the threads of the new sensor and fit It to the
exhaust manifold/pipe rlghten the sensor sufficient to
make a gas tIght seal. but do not overtighten.
(4) Reconnect the electrical leads to the senSOL
(5) Reset the Servtce Interval Counter uSing lhe special tool
necessary lor this purpose
Fig. 27
1"163
Fig.26 Oxygen s.nsor- TR7
2
Oxygen ..nsor -
TRB
lind Rover
3500
49