2009 RENAULT TWINGO fuel pump

13A-3
FUEL SUPPLY
Manual priming pump: Removal - Refitting
K9K
13A
aDisconnect the fuel pipe union (2) .
aRemove the manual priming pump.
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
a
aRefit the manual priming pump.
aConnect the fuel pipe union.
aClip on the fuel pipe.
aConnect the fuel pipe union to the electric diesel fuel
heater.
aClip the fuel pipe on to the body.
II - FINAL OPERATION.
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.
120045
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.

13A-4
FUEL SUPPLY
Fuel filter: Removal - Refitting
K9K
13A
PARTS AND CONSUMABLES FOR THE
REPAIR WORK
aCONSUMABLES:
-cleaning cloths.
aMake sure you have a new diesel filter before open-
ing the fuel circuit.
REMOVAL
I - REMOVAL PREPARATION OPERATION
aRemove the front engine cover.aDisconnect the fuel filter:
-the high pressure pump inlet pipe (1) ,
-the manual priming pump outlet pipe (2) .
aRemove the fuel supply pipes (1) and (2) . IMPORTANT
During this operation, be sure to:
-refrain from smoking or bringing red hot objects
close to the working area,
-be careful of fuel splashes when disconnecting
the union.
IMPORTANT
Wear goggles with side protectors for this opera-
tion.
IMPORTANT
Wear latex gloves during the operation.
IMPORTANT
Consult the safety and cleanliness advice and
operation recommendations before carrying out
any repair (see 13B, Diesel injection, Diesel
injection: Precautions for the repair, page
13B-1) .
Note:
Periodically bleed the water contained in the die-
sel filter via the bleed screw (see maintenance
handbook for vehicle concerned).
WARNING
To avoid any corrosion or damage, protect the
areas on which fuel is likely to run.
121441
WARNING
Prepare for the flow of fluid, and protect the sur-
rounding components.
WARNING
To prevent impur ities from entering the circuit,
plugs must be fitted to the openings of all the fuel
circuit components exposed to the open air.
WARNING
Keep the pipe unions away from contaminated
areas.

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-7
FUEL SUPPLY
Electric diesel fuel heater: Removal - Refitting
C44, and K9K
13A
REMOVAL
I - OPERATION FOR REMOVAL OF PART
CONCERNED
aPosition the vehicle on a two-post lift ( (see Vehicle:
Towing and lifting) ).
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aDisconnect the electric diesel fuel heater electrical
connector (1) .
aRemove the nut (2) from the electric diesel fuel heat-
er mounting on the body.
aDisconnect the inlet and outlet fuel supply pipes (3)
from the electric diesel fuel heater.
aRemove the electric diesel fuel heater and its mount-
ing from the vehicle.
aSeparate the electric diesel fuel heater from its
mounting, letting it flow.
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aFit then lock the electric diesel fuel heater to its
mounting.
aFit the electric diesel fuel heater and its mounting to
the vehicle.
aConnect the electric diesel fuel heater inlet and out-
let fuel supply pipes.
aRefit the electric diesel fuel heater mounting nut on
the body.
aTighten the diesel heater mounting nut on the body.
aConnect the electric diesel fuel heater electrical con-
nector.
aPrime the diesel circuit using the manual priming
pump (4) .
aStart the engine then let it run for a few minutes to
check that it starts properly and to check that there
are no leaks.
II - FINAL OPERATION.
aDeal with possible fuel leaks.
120049
Note:
Make preparations for fuel outfl ow.
120045

13A-8
FUEL SUPPLY
Fuel circuit: Operating diagram
D4F or D7F or K4M
13A
Operating diagram of the fuel supply circuit ( « pump - sender - fuel filter » assembly)
The fuel supply circuit does not have a return.
The fuel pressure does not vary with engine load.
The circuit comprises:
-a rail (1) without a return pipe union and without a
supply pressure regulator,
-a single pipe (2) coming from the tank,
-a « pump - sender - fuel filter » supply assembly fitted
with a pressure regulator (3) , fuel pump (4) and fuel
filter (5) (all located in the tank),
-a fuel vapour recirculation tank (6) .
109471

13A-14
FUEL SUPPLY
Fuel flow: Check
D4F or D7F
13A
CHECK
a
I - PREPARATION OPERATION FOR CHECK
aRemove the oil filler neck.
aDisconnect the fuel supply union.aFit a “T” union to the fuel supply union (Mot. 1311-
08).
aFit a pipe which is long enough to drain the pump
into a container to the “T” outlet union. Special tooling required
Mot. 1311-08Union for taking fuel pres-
sure measurements .
Equipment required
graduated measuring cylinder
IMPORTANT
During this operation, be sure to:
-refrain from smoking or bringing red hot objects
close to the working area,
-be careful of fuel splashes when disconnecting
the union.
IMPORTANT
Wear goggles with side protectors for this opera-
tion.
IMPORTANT
Wear leaktight gloves (Nitrile type) for this opera-
tion.
WARNING
To avoid any corrosion or damage, protect the
areas on which fuel is likely to run.
D4F
D4F, and 772
121778

13A-15
FUEL SUPPLY
Fuel flow: Check
D4F or D7F
13A
aFit a “T” union to the fuel supply union (Mot. 1311-
08).
aFit a pipe which is long enough to drain the pump
into a container to the “T” outlet union.aFit a “T” union to the fuel supply union (Mot. 1311-
08).
aFit a pipe which is long enough to drain the pump
into a container to the “T” outlet union.
II - CHECK
aImmerse the pipe into a graduated measuring cyl-
inder (2000 ml).
aRemove the cover from the engine compartment
connection unit. D4F, and 780 or 782
121729
D7F
121779

13A-16
FUEL SUPPLY
Fuel flow: Check
D4F or D7F
13A
aRemove the relay (1) .
aShunt the relay to supply the electric fuel pump.
III - FINAL OPERATION
aRefit:
-the fuel pump relay,
-the cover of the engine compartment connection
unit.
aRemove the “T” union (Mot. 1311-08).
aConnect the fuel supply union.
aRefit the oil filler neck.
119373
Note:
The flow reading should be 80 to 120 l/h.
D4F