2009 RENAULT TWINGO RS Engine And Peripherals Workshop Manual

13B-40
DIESEL INJECTION
High pressure pipe between rail and injector: Removal - Refitting
K9K
13B
aClean the diesel pipe unions on the high pressure
pump (see 13B, Diesel injection, Diesel injection:
Precautions for the repair, page 13B-1) .
aDisconnect from the high pressure pump:
-the diesel supply pipe (2) ,
-the diesel return pipe (3) to the diesel filter.aUnclip the neck at (4) .
aRemove the neck wiring harness.
aRemove:
-the neck nut (5) ,
-the neck.
121423
WARNING
To avoid any corrosion or damage, protect the
areas on which fuel is likely to run.
WARNING
To prevent impurities from entering the circuit,
plugs must be fitted to the openings of all the fuel
circuit components exposed to the open air.121419

13B-41
DIESEL INJECTION
High pressure pipe between rail and injector: Removal - Refitting
K9K
13B
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aClean the high pressure pipe unions (6) between the
rail and the injectors (see 13B, Diesel injection,
Diesel injection: Precautions for the repair, page
13B-1) .
aRemove then dispose of:
-the clips between the high pressure pipes,
-the high pressure pipes (6) between the rail and the
injectors.REFITTING
I - REFITTING PREPARATIONS OPERATION
a
II - REFITTING OPERATION FOR PART
CONCERNED
a
aFit the new high pressure pipes between the rail and
the injectors.
aScrew on the high pressure pipe unions between the
rail and the injectors until contact is made, but do not
tighten them.
121418
WARNING
To avoid any corrosion or damage, protect the
areas on which fuel is likely to run.
Note:
Do not damage the injector return nozzle.
WARNING
To prevent impurities from entering the circuit,
plugs must be fitted to the openings of all the fuel
circuit components exposed to the open air.
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.
20960
WARNING
Before fitting a new high pressure pipe, lightly
lubricate the nut threads with the oil from the
applicator provided in the new parts kit.
Be careful not to allow oil into the high pressure
pipe.
Do not lubricate high pressure pipes supplied
without an applicator, as these high pressure
pipes are self-lubr icating.

13B-42
DIESEL INJECTION
High pressure pipe between rail and injector: Removal - Refitting
K9K
13B
aFit and lock a new clip between the high pressure
pipes between the rail and the injectors.
aUsing the (Mot. 1746), tighten to torque:
-the high pressure pipe unions between the
pump and the yellow rail (24 Nm),
-the high pressure pipe unions between the
pump and the silver rail (28 Nm).
III - FINAL OPERATION.
aRefit:
-the channel,
-the neck nut.
aFit the neck wiring harness.
aClip the neck on.
aConnect to the high pressure pump:
-the diesel fuel supply pipe,
-the diesel return pipe to the diesel filter.
aRemove the protection on the alternator and starter.
aConnect the connectors:
-the heater plugs,
-the injectors,
-the flow actuator,
-diesel fuel temperature sensor.
aRemove the blanking cover protecting the dipstick
guide inlet orifice on the cylinder block.
aRefit:
-the dipstick guide,
-the dipstick guide nut,
-the oil level dipstick.
aRefit the neck nuts.
aPrime the fuel circuit with a manual priming pump
until the disconnected pipes are filled with fuel; if
necessary, bleed the fuel filter (see 13A, Fuel sup-
ply, Fuel filter: Removal - Refitting, page 13A-4) .
aCheck that there are no fuel leaks.
aConnect the battery (see ) (MR 411, 80A, Battery).
aCheck the high pressure circuit (see 13B, Diesel in-
jection, High pressure pipe: Check, page 13B-34)
.
aUse the Diagnostic tool to check for an absence of
stored faults; deal with these and clear them as nec-
essary.
aRefit the engine cover.

13B-43
DIESEL INJECTION
Injector rail: Removal - Refitting
K9K
13B
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment)
aRemove the front engine cover.
aDisconnect the battery (see Battery: Removal - Re-
fitting) (80A, Battery).
aDisconnect:
-the heater plug connectors (1) ,
-the connectors (2) from the injectors. Special tooling required
Mot. 1746Offset wrench for tightening
High Pressure pump pipes.
Tightening torquesm
studs of the injection rail
on the cylinder head8 Nm
injector rail nuts28 Nm
unions for the high pres-
sure pipes between the
rail and the yellow-
coloured injector24 Nm
unions for the high pres-
sure pipes between the
rail and the silver-
coloured injector28 Nm
unions for the high pres-
sure pipes between the
pump and the yellow-
coloured r ail24 Nm
unions for the high pres-
sure pipes between the
pump and the silver-
coloured r ail28 Nm
IMPORTANT
Consult the safety and cleanliness advice and oper-
ation recommendations before carrying out any
repair (see 13B, Diesel injection, Diesel injec-
tion: Precautions for the repair, page 13B-1) .
IMPORTANT
Use the diagnostic tool before any operation is car-
ried out on the injection circuit to check:
-that the rail is not under pressure,
-that the fuel temperature is not too high.
Working on the circuit with the engine running is
strictly forbidden.
WARNING
To avoid any corrosion or damage, protect the
areas on which fuel is likely to run.
IMPORTANT
Wear leaktight gloves (nitrile type) for this opera-
tion.
WARNING
To prevent impurities from entering the circuit, place
protective plugs on all fuel circuit components
exposed to the open air.
127895

13B-44
DIESEL INJECTION
Injector rail: Removal - Refitting
K9K
13B
aDisconnect:
-the fuel flow actuator (3) ,
-the diesel temperature sensor (4) .
aAt (5) , unclip the electrical wiring from the neck.
aMove the electrical wiring to one side.aDisconnect the injector rail pressure sensor connec-
tor (6) .
aRemove:
-the dipstick (7) ,
-the oil level dipstick nut (8) ,
-the oil level dipstick guide (9) .
aPlug the oil level dipstick guide inlet opening on the
cylinder block.
aRemove:
-the bolt on the neck of the injection rail.
-the neck of the injection rail.
127907
127906127902

13B-45
DIESEL INJECTION
Injector rail: Removal - Refitting
K9K
13B
aClean the fuel pipe unions on the high pressure
pump (see 13B, Diesel injection, Diesel injection:
Precautions for the repair, page 13B-1) .
a
aDisconnect the high pressure pump from:
-the fuel supply pipe (10) ,
-the fuel return pipe (11) to the fuel filter.
aInsert the blanking plugs.aClean the high pressure pipe unions (12) between
the pump and the rail (see 13B, Diesel injection,
Diesel injection: Precautions for the repair, page
13B-1) .
a
aRemove the high pressure pipe (12) between the
pump and the injection rail and discard it.
aInsert the blanking plugs.
121423
WARNING
To avoid any corrosion or damage, protect the
areas on which fuel is likely to run.127901
WARNING
To avoid any corrosion or damage, protect the
areas on which fuel is likely to r un.

13B-46
DIESEL INJECTION
Injector rail: Removal - Refitting
K9K
13B
aClean the high pressure pipe unions (13) between
the injection rail and the injectors (see 13B, Diesel
injection, Diesel injection: Precautions for the
repair, page 13B-1)
aRemove then dispose of:
-the clips between the high pressure pipes,
-the high pressure pipes between the rail and the in-
jectors.
aInsert the blanking plugs.II - OPERATION FOR REMOVAL OF PART
CONCERNED
aRemove:
-the nuts (14) from the injector rail,
-the injector rail.
REFITTING
I - REFITTING PREPARATION OPERATION
a
aAlways replace:
-the high pressure pipe between the pump and the
rail,
-the high pressure pipes between the rail and the in-
jector
aIn the event of replacement, torque tighten the
studs of the injection rail on the cylinder head (8
Nm ).
II - REFITTING OPERATION FOR PART
CONCERNED
aTake the injector rail out of its packaging.
121418
WARNING
To avoid any corrosion or damage, protect the
areas on which fuel is likely to run.
127901
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.

13B-47
DIESEL INJECTION
Injector rail: Removal - Refitting
K9K
13B
aRemove the blanking plugs.
aFit the injector rail.
aFit the injector rail nuts without tightening them.
III - FINAL OPERATION.
a
aRemove the blanking plugs from the high pressure
pump and the injection rail and discard them.
aFit the high pressure pipe between the high pressure
pump and the injection rail.
aTighten the high pressure pipe unions between the
pump and the rail until contact is made.
aRemove the blanking plugs on the injection rail and
the diesel fuel injectors then discard them.
aFit the new high-pressure pipes between the rail and
the injectors.
aTighten until contact the unions of the high pressure
pipes between the rail and injector.aFit and lock the new clips between the high pressure
pipes on the rail and injectors.
aTighten to torque:
-the injector rail nuts (28 Nm),
-the unions for the high pressure pipes between
the rail and the yellow-coloured injector (24
Nm) using the tool (Mot. 1746),
-the unions for the high pressure pipes between
the rail and the silver-coloured injector (28 Nm)
using the tool (Mot. 1746),
-the unions for the high pressure pipes between
the pump and the yellow-coloured rail (24 Nm)
using the tool (Mot. 1746),
-the unions for the high pressure pipes between
the pump and the silver-coloured rail (28 Nm)
using the tool (Mot. 1746),
aConnect to the high pressure pump:
-the fuel return pipe to the fuel filter,
-the fuel supply pipe.
aRefit the neck on the injection rail.
aRemove the protection fitted on the inlet opening of
the oil level dipstick on the cylinder block.
aRefit:
-the dipstick guide,
-the oil level dipstick nut,
-the oil level dipstick.
aConnect the injector rail pressure sensor connector.
aPosition the wiring harness in its channel.
aFasten the electrical wiring to the channel.
aConnect:
-the diesel temperature sensor,
-the fuel flow actuator,
-the injector connectors,
-the heater plug connectors.
aPrime the fuel circuit using a manual priming pump
until the disconnected pipes are filled with fuel.
aCheck that there are no fuel leaks.
aConnect the battery (see Battery: Removal - Refit-
ting) (80A, Battery).
aCheck the high pressure circuit (see 13B, Diesel in-
jection, High pressure pipe: Check, page 13B-34)
.
aRefit the engine cover.
20960
WARNING
Before fitting a new high-pressure pipe, lightly
lubricate the nut threads with the oil from the
applicator provided in the new parts kit.
Be careful not to allow oil into the high-pressure
pipe.
Do not lubricate high-pressure pipes supplied
without an applicator, as these high-pressure
pipes are self-lubricating.