Renault F4R - Page 903

19B-29
EXHAUST
Catalytic converter: Removal - Refitting
F4R
19B
a Remove:
-the bolt (9) from the catalytic converter upper brac-
ket on the catalytic converter,
-the bolt (10) from the upstream strut of the catalytic
converter on the catalytic converter,
-the catalytic converter nuts (11) ,
-the catalytic converter,
-the seal between the catalytic converter and the
turbocharger.
REFITTING
I - REFITTING PREPARATION OPERATION
a parts always to be replaced: seal between turbo-
charger and catalytic converter (10,09,01,08).
a parts always to be replaced: catalytic converter
stud on the turbocharger (if loosened) (10,09,01,
04).
If replacing the catalytic converter
a Remove the downstream oxygen sensor (see 17B,
Petrol injection, Oxygen sensors: Removal - Re-
fitting, page 17B-1) .
II - REFITTING OPERATION FOR PART
CONCERNED
a Refit:
-a new seal between the turbocharger and the cata-
lytic converter,
- the catalytic converter.
a Fit without tightening:
- the catalytic converter upper bracket bolt on the ca-
talytic converter,
- the catalytic converter nuts,
- the catalytic converter upstream strut bolt on the
catalytic converter.
a Tighten to torque:
- the catalytic converter upstream strut bolts on
the catalytic converter (11 Nm),
- the catalytic converter upper bracket bolt on
the catalytic converter (11 N.m),
- the catalytic converter nuts (40 N.m).
III - FINAL OPERATION
a Clip on the downstream oxygen sensor wiring.
a Connect the downstream oxygen sensor connector.
21926
Note:
If a stud loosens during removal, coat it with
HIGH RESISTANCE THREADLOCK (see Vehi-
cle: Parts and ingredients for the repairwork)
(04B, Consumables - Products).
Torque tighten the catalytic converter studs on
the turbocharger (9 N.m).
WARNING
To prevent the surrounding components from
overheating, do not damage (tear, pierce, bend,
etc.) a heat shield.
Any damaged heat shields must be replaced.