2009 RENAULT TWINGO catalytic converter

19B-25
EXHAUST
Expansion chamber: Removal - Refitting
K4M
19B
REMOVING THE EXHAUST PIPE FRONT
EXPANSION CHAMBER
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
aRemove:
-the engine undertray bolts,
-the engine undertray.II - OPERATION FOR REMOVAL OF PART
CONCERNED
aRemove the expansion chamber clip (1) .
aRemove:
-the nuts (2) on the catalytic converter bracket,
-the expansion chamber,
-the catalytic converter seal,
-the catalytic converter studs using a roller-type
stud removal tool. Equipment required
roller-type stud removal tool
Tightening torquesm
catalytic converter studs7 N.m
catalytic converter
bracket nuts21 N.m
IMPORTANT
To avoid all risk of damage to the systems, apply
the safety and cleanliness instructions and opera-
tion recommendations before carrying out any
repair (see 19B, Exhaust, Exhaust: Precautions
for the repair, page 19B-8) .
IMPORTANT
Wear protective gloves during the operation.
IMPORTANT
Wear heat protective gloves during the operation.
WARNING
To prevent the surrounding components from over-
heating, do not damage (tear, pierce bend etc.) a
heat shield.
All damaged heat shields must be replaced.
131772
132340

19B-26
EXHAUST
Expansion chamber: Removal - Refitting
K4M
19B
REMOVING THE EXHAUST PIPE REAR
EXPANSION CHAMBER
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aCut the exhaust pipe (see 19B, Exhaust, Exhaust:
Precautions for the repair, page 19B-8) in the des-
ignated cutting area downstream from the expan-
sion chamber (see ) .
aRemove:
-the rubber mounting bush bolt (3) ,
-the clip (4) from the expansion chamber,
-the expansion chamber.
REFITTING THE EXHAUST PIPE FRONT
EXPANSION CHAMBER
I - REFITTING PREPARATION OPERATION
aUse ABRASIVE PADS to clean the bearing faces of
the expansion chamber on the catalytic converter
(see Vehicle: Parts and consumables for the re-
pair) (04B, Consumables - Products).aNext, degrease these bearing faces using SUR-
FACE CLEANER and clean cloths (see Vehicle:
Parts and consumables for the repair) (04B, Con-
sumables - Products).
aAlways replace:
-the catalytic converter seal,
-the expansion chamber clip,
-the catalytic converter studs.
II - REFITTING OPERATION FOR PART
CONCERNED
aRefit new studs on the catalytic converter.
aTorque tighten the catalytic converter studs (7
N.m).
aRefit:
-a new catalytic converter seal,
-the expansion chamber,
-the clip on the expansion chamber.
aTorque tighten the catalytic converter bracket
nuts (21 N.m).
aTighten the clip bolt while guiding the exhaust pipe
to ensure correct alignment.
aCheck:
-that all the exhaust pipe heat shields are in place
and properly attached.
-that there is no contact with the underbody,
-that there are no leaks.
III - FINAL OPERATION.
aRefit the engine undertray.
REFITTING THE EXHAUST PIPE REAR
EXPANSION CHAMBER
I - REFITTING PREPARATION OPERATION
aAlways replace the expansion chamber clip.
II - REFITTING OPERATION FOR PART
CONCERNED
aRefit:
-the expansion chamber,
-an expansion chamber clip.
131773

19B-28
EXHAUST
Intermediate pipe: Removal - Refitting
K9K
19B
PARTS AND CONSUMABLES FOR THE REPAIR
Pièces à remplacer systématiquement :
-any stud and/or nut from the damaged catalytic con-
verter,
-the exhaust system sealing ring on the catalytic con-
verter,
-clip.
Ingrédients :
-ABRASIVE PADS,
-SURFACE CLEANER.
REMOVING THE FRONT SECTION OF THE
INTERMEDIATE PIPE
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift ( (see Vehicle:
Towing and lifting) ).
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aRemove:
-the exhaust pipe springs and bolts on the catalytic
converter,
-the clip between the front section of the intermedi-
ate pipe and the intermediate pipe,
-the front section of the intermediate pipe,
-the sealing ring of the exhaust pipe on the catalytic
converter and throw it in the bin.
REFITTING THE FRONT SECTION OF THE
INTERMEDIATE PIPE
I - REFITTING PREPARATION OPERATION
aUsing RUBBING PADS clean the bearing faces of:
-on the catalytic converter,
-on the exhaust system.
aNext, degrease these bearing faces using SUR-
FACE CLEANER ( (see Vehicle: Parts and con-
sumables for the repair) ) and clean cloths.
II - REFITTING OPERATION FOR PART
CONCERNED
aFit the intermediate pipe, fitted with a new sealing
ring, onto the catalytic converter.
aRefit a new clip between the front section of the in-
termediate pipe and the intermediate pipe.
aRefit the exhaust pipe springs and bolts on the cata-
lytic converter.
aTorque tighten the exhaust pipe bolts on the cata-
lytic converter (21 Nm).
REMOVING THE INTERMEDIATE PIPE
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift ( (see Vehicle:
Towing and lifting) ).
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aRemove the clip between the front section of the in-
termediate pipe and the intermediate pipe.
aRemove the intermediate pipe.
aCut the exhaust pipe (see 19B, Exhaust, Exhaust:
Precautions for the repair, page 19B-8) in the des-
ignated area to be cut (see ) .
aRemove:
-the intermediate pipe rubber mounting bush bolt on
the body,
-the connector pipe,
-the rubber mounting bush bolt on the intermediate
pipe,
-the intermediate pipe rubber mounting bush. Tightening torquesm
exhaust pipe bolts on
the catalytic converter21 Nm
IMPORTANT
Consult the safety and cleanliness advice and oper-
ation recommendations before carrying out any
repair (see 19B, Exhaust, Exhaust: Precautions
for the repair, page 19B-8) .

19B-30
EXHAUST
Intermediate pipe: Removal - Refitting
D4F, and 772 – D7F
19B
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aRemove the clip between the catalytic converter and
the intermediate pipe.
aRemove the intermediate pipe
aCut the exhaust pipe (see 19B, Exhaust, Exhaust:
Precautions for the repair, page 19B-8) in the des-
ignated area to be cut (see ) .
aRemove:
-the intermediate pipe rubber mounting bush bolt on
the body,
-the connector pipe,
-the rubber mounting bush bolt on the intermediate
pipe,
-the intermediate pipe rubber mounting bush.
REFITTING
REFITTING OPERATION FOR PART CONCERNED
aRefit:
-the rubber mounting bush of the intermediate pipe,
-the rubber mounting bush bolt on the intermediate
pipe.
aFit the intermediate pipe.
aAttach the intermediate pipe to the vehicle using the
intermediate pipe rubber mounting bush bolt.
aFit a new After-Sales sleeve and follow the instruc-
tions (see 19B, Exhaust, Exhaust: Precautions
for the repair, page 19B-8) .
aRefit a new clip between the front section of the in-
termediate pipe and the intermediate pipe.aCheck the following and deal with if necessary:
-that there is no contact with the underbody,
-the presence and correct positioning of all the ex-
haust pipe heat shields.
aStart the vehicle.
aCheck that there are no leaks and deal with them if
necessary.
Note:
If replacing the rubber mounting bush, spray the
inside of the rubber mounting bush with aerosol
spray BRAKE CLEANER (see Vehicle: Parts
and consumables for the repair) (04B, Con-
sumables - Products) to facilitate fitting.

19C-5
TANK
Fuel tank: Removal - Refitting
D4F or D7F or K4M or K9K
19C
aDisconnect:
-the fuel level sensor module connector (2) ,
-the fuel level sensor module pipe union (3) .
aRemove the rear wheels (see Wheel: Removal -
Refitting) (35A, Wheels and tyres).
aRemove the rear brake drums (see Rear brake
drum: Removal - Refitting) (33A, Rear axle com-
ponents).
aUnclip:
-the handbrake cable from the secondary brake
shoe,
-the handbrake cable from the flange.aRemove:
-the clip (4) between the catalytic converter and the
rear silencer,
-the exhaust pipe rubber mounting bush bolt (5) .
119691
WARNING
To prevent impurities from entering the circuit,
place protective plugs on all fuel circuit compo-
nents exposed to the open air.
D4F or D7F or K9K
D4F or D7F or K9K
119689

19C-7
TANK
Fuel tank: Removal - Refitting
D4F or D7F or K4M or K9K
19C
aRemove:
-the clip (8) between the catalytic converter and the
expansion chamber,
-the exhaust pipe rubber mounting bush bolt (9) ,
-the heat shield clips under the tank,
-the heat shield under the tank.aOpen the ABS sensor connector protective unit (10)
.
aDisconnect the ABS sensor connectors (11) .
aDetach the anti-lock braking connectors protective
housing from the tank. K4M
131773
119438
119437

19C-9
TANK
Fuel tank: Removal - Refitting
D4F or D7F or K4M or K9K
19C
aDetach the brake cables (16) on the tank.
aFit a component support under the fuel tank.
aRemove:
-the tank bolts (17) ,
-the tank.
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aRefit the tank.
aTorque tighten the tank bolts (21 N.m).
aAttach the brake cables to the tank.
aConnect the filler pipe.
aRefit the filler pipe clip on the neck.
aConnect the anti-splashback pipe.aRefit the fuel vapour absorber (see 14A, Antipollu-
tion, Fuel vapour absorber: Removal - Refitting,
page 14A-4) .
II - FINAL OPERATION.
aConnect the brake pipes to the body.
aRefit the rear brake hose mounting bolts.
aClip the protective housing of the ABS connectors
onto the tank.
aConnect the ABS sensor connectors.
aClose the anti-lock braking system sensor connector
protective housing.
aRefit:
-the heat shield under the tank.
-the heat shield clips under the tank,
-the exhaust system rubber mounting bush bolt,
-the clip between the catalytic converter and the ex-
pansion chamber,
aClip the calliper parking brake cables onto the tank
and the callipers.
119652
119685
D4F or D7F or K4M
K4M

19C-10
TANK
Fuel tank: Removal - Refitting
D4F or D7F or K4M or K9K
19C
aRefit:
-the heat shield under the tank,
-the heat shield clips under the tank
aTighten to torque:
-the exhaust pipe rubber mounting bush bolt (21
N.m),
-the clip between the catalytic converter and the
rear silencer (21 N.m).
aClip:
-the handbrake cable onto the flange,
-the handbrake cable onto the secondary brake
shoe.
aRefit the rear brake drums (see Rear brake drum:
Removal - Refitting) (33A,Rear axle components).
aRefit the rear wheels (see Wheel: Removal - Refit-
ting) (35A, Wheels and tyres).
aConnect:
-the fuel level sensor module pipe union,
-the fuel level sensor module connector.
aRefit the access flap for the fuel level sensor mod-
ule.
aRefit the rear bench seat.
aConnect the battery (see Battery: Removal - Refit-
ting) (80A, Battery). D4F or D7F or K9K