2009 RENAULT TWINGO sensor

12B-11
TURBOCHARGING
Turbocharger: Removal - Refitting
D4F, and 780 or 782
12B
III - FINAL OPERATION
aRefit:
-the catalytic converter (see 19B, Exhaust, Cata-
lytic converter: Removal - Refitting, page 19B-
12) ,
-the front right-hand wheel driveshaft (see Front
right-hand driveshaft: Removal - Refitting)
(29A, Driveshafts),
-the lower engine tie-bar (see 19D, Engine mount-
ing, Lower engine tie-bar: Removal - Refitting,
page 19D-18) ,
-the upstream oxygen sensor (see 17B, Petrol in-
jection, Oxygen sensors: Removal - Refitting,
page 17B-13) ,
-the air filter unit (see 12A, Fuel mixture, Air filter
unit: Removal - Refitting, page 12A-13) .
aConnect the battery (see Battery: Removal - Refit-
ting) (80A, Battery).
aRefill:
-and bleed the cooling system (see 19A, Cooling,
Cooling system: Draining - Refilling, page 19A-
9) ,
-the manual gearbox (see Manual gearbox oils:
Draining - Filling) (21A, Manual gearbox).
aRefit the engine undertray.

12B-12
TURBOCHARGING
Turbocharger oil pipe: Removal - Refitting
D4F, and 780 or 782
12B
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
aDisconnect the battery (see Battery: Removal - Re-
fitting) (80A, Battery).
aRemove:
-the air filter unit (see 12A, Fuel mixture, Air filter
unit: Removal - Refitting, page 12A-13) ,
-the air filter box strut bolt,
-the air filter box strut,
-the upstream oxygen sensor (see 17B, Petrol in-
jection, Oxygen sensors: Removal - Refitting,
page 17B-13) . Tightening torquesm
turbocharger oil return
pipe bolts10 N.m
turbocharger oil supply
pipe bolt on the cylinder
block19 N.m
turbocharger oil supply
pipe bolt on the turbo-
charger19 N.m
turbocharger oil supply
pipe bolt10 N.m

12B-15
TURBOCHARGING
Turbocharger oil pipe: Removal - Refitting
D4F, and 780 or 782
12B
aRefit:
-the upstream oxygen sensor (see 17B, Petrol in-
jection, Oxygen sensors: Removal - Refitting,
page 17B-13) ,
-the air filter box strut,
-the air filter box strut bolt,
-the air filter unit (see 12A, Fuel mixture, Air filter
unit: Removal - Refitting, page 12A-13) .
aConnect the battery (see Battery: Removal - Refit-
ting) (80A, Battery).

13A-1
FUEL SUPPLY
Diesel supply circuit: Operating diagram
K9K
13A
The diesel fuel supply system includes a diesel injec-
tion computer and various sensors.
120417
(1) Fuel tank
(2) Dipstick
(3) Electrical diesel fuel reheater
(4) Man ual priming pump
(5) Diesel filter
(6) High pressure pump
(7) Fuel fl ow actuator
(8) Injector rail
(9) Injector rail pressure sensor
(10) Diesel injector
(11) Venturi
IMPORTANT
Loosening a high pressure pipe union when the
engine is running is strictly prohibited.
WARNING
It is forbidden:
-to dismantle the interior of the pump or injectors.
-to remove the pressure sensor from the fuel rail
(because of circuit contamination problems). If the
pressure sensor fails, the pressure sensor, the rail
and the five high pressure pipes must be replaced,
-to dismantle the flow regulator solenoid valve and
the pressure regulator solenoid valve on the high
pressure pump.

13A-5
FUEL SUPPLY
Fuel filter: Removal - Refitting
K9K
13A
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aRemove:
-the fuel filter mounting nut (3) ,
-the fuel filter from its mounting.
aDetach the water detection sensor offset connector
on the fuel filter mounting (if fitted).
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aaAttach the water detection sensor offset connector
to the fuel filter mounting (if fitted).
aRefit the fuel filter to its mounting.
aFit the fuel filter mounting nut.
II - FINAL OPERATION.
aPosition the fuel pipes.
aConnect to the fuel filter:
-the manual priming pump outlet pipe,
-the high pressure pump inlet pipe.
aOpen the bleed screw on top of the fuel filter.
aPrime the fuel circuit using a manual priming pump
until the disconnected pipes are filled with fuel.
aClose the bleed screw on top of the fuel filter.
aCheck that there are no fuel leaks.
aStart the engine.
aCheck that there are no fuel leaks.
aSwitch off the engine.
aRefit the engine cover.
BLEEDING
aRemove the fuel filter mounting nut.
aDetach the manual priming pump.
aRemove the fuel filter without pulling on the water
detection sensor wiring harness in the diesel fuel.
aPosition a container under the fuel filter which has
been removed from its mounting.
aTurn the bleed cap or the water detection sensor in
the diesel fuel (depending on equipment) by no
more than one turn.
aAllow it to flow until diesel fuel appears.
aClose the bleed cap or the water detection sensor
(depending on equipment).
121441
Note:
If the fuel filter is to be reused, fit blanking plugs
to the fuel supply pipes and fuel filter openings,
using the appropriate blanking plug kit, depend-
ing on the engine (see 13B, Diesel injection,
Diesel injection: Precautions for the repair,
page 13B-1) .
WARNING
Do not remove the blanking plugs from each
component until the last moment.
Also, do not remove the components from their
packaging until they are to be fitted to the vehi-
cle.
Note:
Chec k that the fuel filter is correctly positioned
and secure on its mounting by shaking it: the fil-
ter must not move.
WARNING
Prepare for the flow of fluid, and protect the sur-
rounding components.

13A-6
FUEL SUPPLY
Fuel filter: Removal - Refitting
K4M
13A
The fuel filter is incorporated in the "fuel level sensor
module". To remove the fuel filter, remove the "fuel lev-
el sensor module" (see 19C, Tank, Fuel level sensor
module: Removal - Refitting, page 19C-13) .

13B-2
DIESEL INJECTION
Diesel injection: Precautions for the repair
K9K
13B
II - ADVICE TO BE FOLLOWED BEFORE ANY
OPERATION
1) Carry out the work in a clean working area and take
care to protect removed components from dust using
plastic bags which are hermetically-resealable, for ex-
ample.
2) Always order the following from the Parts Depart-
ment before carrying out work:
-a new set of blanking plugs, specific to the engine,
-enough lint-free cleaning cloths.
-one of the two cleaning products for fuel pipe
unions,
-the parts that are always to be replaced after each
removal operation, mentioned in the operational pro-
cedures specific to the vehicle (see related Workshop
Repair Manual).
3) Wear safety goggles fitted with side shields to pre-
vent the cleaning product from splashing the eyes.
4) Wear leaktight protective gloves (Nitrile type) to
avoid prolonged contact with the skin.
5) Before carrying out work on the injection system,
use plastic bags or clean rags, for example, to protect:
-the accessories and timing belts,
-the electrical accessories (starter, alternator, power-
assisted steering pump, sensors and electrical con-
nectors),
-the flywheel face.
III - INSTRUCTIONS TO BE FOLLOWED DURING
THE OPERATION
Wash your hands before and while carrying out the
work.
Replace leaktight protective gloves (Nitrile type) when
they are soiled or damaged.
All components removed from the injection system
must be stored in a hermetically sealed plastic bag
once they have been capped.
Reseal the bag hermetically, for example using adhe-
sive tape, even if the bag must be opened shortly after-
wards: ambient air can be a source of impurities.After opening the fuel circuit, the use of brushes, clean-
ing agents, air blow guns, rifle-type brushes or stan-
dard cloths is strictly prohibited: these items are likely
to allow impurities to enter the system.
When replacing a component with a new one or when
refitting it after storing it in a plastic bag, do not unpack
it until it is time to fit it on the vehicle.
IV - CLEANING
There are currently two procedures for cleaning the
fuel circuit before opening it in order to carry out work in
the workshop.
These procedures enable the fuel circuit to be cleaned
to prevent contamination from entering: they both have
the same end result and neither is preferred over the
other.
1 - Cleaning using injector cleaner
Clear the access to the unions that need opening, fol-
lowing the work procedures specific to the vehicle (see
the relevant Workshop Repair Manual).
Protect sections which are sensitive to fuel leaks.
Pour the injector cleaning agent into a container which
is free from impurities.
Dip a clean brush, which is not shedding bristles, into
the container of injector cleaning agent.
Clean the unions carefully using the brush and the in-
jector cleaning agent.
Blast the components that have been cleaned with
compressed air (tools, workbench, and also parts,
unions and around the injection system). Check that no
bristles from the brush have come away and that the
area is clean.
Wipe the sections that were cleaned with fresh clean-
ing cloths.
Open the circuit at the unions and immediately fit the
relevant blanking plugs. Note:
When using leather protective gloves, wear a pair of
leaktight protective gloves (Nitrile type) over the top.
IMPORTANT
Wear leaktight gloves (Nitrile type) for this opera-
tion.
IMPORTANT
Wear goggles with side protectors for this opera-
tion.

13B-8
DIESEL INJECTION
Diesel injection: List and location of components
K9K, and 740
13B
121418
(1) High pressure pump
(2) Venturi
(3) Injectors
(4) Heater plugs
102315
(5) Fuel fl ow actuator
(6) Diesel fuel temperature sensor
(7) Accelerometer
121420
(8) Injector rail
(9) Injector rail pressure sensor
121422
(10) Diesel injection computer