2009 RENAULT TWINGO RS fuel pressure

13B-10
DIESEL INJECTION
Diesel injection: List and location of components
K9K, and 718
13B
121418
(1) High pressure pump
(2) Venturi
(3) Injectors
(4) Heater plugs
102315
(5) Fuel fl ow actuator
(6) Diesel temperature sensor
(7) Accelerometer
121420
(8) Injector rail
(9) Injector rail pressure sensor
121422
(10) Diesel injection computer

13B-16
DIESEL INJECTION
High pressure pump: 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 ) (80A, Battery).
aRemove:
-the windscreen wiper arms (see Windscreen wip-
er arm: Removal - Refitting) (85A, Wiping -
Washing),
-the scuttle panel grille (see Scuttle panel grille:
Removal - Refitting) (56A, Exterior equipment),-the scoop under the scuttle panel grille (see Scoop
under the scuttle panel grille: Removal - Refit-
ting) (56A, Exterior equipment).
aRemove:
-the dipstick,
-the oil level dipstick nut (1) ,
-the oil level dipstick guide.
aPlug the oil level dipstick guide inlet opening on the
cylinder block.
aDisconnect the following connectors :
-the heater plugs,
-of the injectors,
-the flow actuator,
-the diesel temperature sensor.
aProtect the alternator from fuel outflow. Special tooling required
Mot. 1672Low er engine support.
Mot. 1430Set of 5 crankshaft and cam-
shaft pulley timing pins.
Mot. 1606High pressure pump pulley
support tool.
Mot. 1525Gear extractor for tapered
hub injection pump.
Mot. 1525-02Adapter claws for Mot. 1525.
Equipment required
Diagnostic tool
Tightening torquesm
high pressure pump
bolts on the cylinder
head23 N.m
high pressure pump pul-
ley nut70 N.m
cylinder head sus-
pended mounting bolts25 N.m
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) .
114527

13B-17
DIESEL INJECTION
High pressure pump: Removal - Refitting
K9K
13B
a
Clean the union on the diesel fuel supply pipe high
pressure pump (see 13B, Diesel injection, Diesel
injection: Precautions for the repair, page 13B-1)
.
aUnclip:
-the fuel supply and return pipes at (2) ,
-the priming pump (3) .
aDisconnect the high pressure pump from:
-the diesel supply pipe (4) ,
-the diesel return pipe (5) to the diesel filter.
aInsert the blanking plugs.
aRemove the fuel supply pipes from the pump.
aRemove:
-the fuel filter (see 13A, Fuel supply, Fuel filter:
Removal - Refitting, page 13A-4) ,
-the fuel filter mounting bolts,
-the fuel filter holder,aUnclip the engine wiring channel at (6) .
aMove the engine wiring away from the engine wiring
channel.
aRemove:
-the nut (7) from the channel,
-the channel,
-the engine tie-bar (see 19D, Engine mounting,
Lower engine tie-bar: Removal - Refitting, page
19D-18) .
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-18
DIESEL INJECTION
High pressure pump: Removal - Refitting
K9K
13B
a
Disconnect the diesel return pipe (8) on the venturi.
aInsert the blanking plugs.
aRemove the high pressure pipe between the pump
and the rail (see 13B, Diesel injection, High pres-
sure pipe between pump and rail: Removal - Re-
fitting, page 13B-35)
aRemove the right-hand suspended engine mounting
(see 19D, Engine mounting, Right-hand sus-
pended engine mounting: Removal - Refitting,
page 19D-13) .
aLift the engine a few centimetres using the (Mot.
1672).
aRemove the camshaft position sensor (see 13B,
Diesel injection, Camshaft position sensor: Re-
moval - Refitting, page 13B-14) .aUnclip the upper timing cover at (9) .
aRemove:
-the plastic bolt (10) ,
-the upper timing cover.
121420
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.
Note:
Do not disconnect the right-hand driveshaft when
raising the engine.
K9K, and 718
141221
136654

13B-24
DIESEL INJECTION
High pressure pump: Removal - Refitting
K9K
13B
aRefit the lower timing cover.
aRefit the accessories belt (see 11A, Top and front
of engine, Accessories belt: Removal - Refitting,
page 11A-3)
aRefit:
-the upper timing cover,
-the camshaft position sensor (see 13B, Diesel in-
jection, Camshaft position sensor: Removal -
Refitting, page 13B-14) ,
-the right-hand suspended engine mounting (see
19D, Engine mounting, Right-hand suspended
engine mounting: Removal - Refitting, page
19D-13) .
aRemove the blanking plugs.
aRefit a high pressure pipe between the pump and
the rail (see 13B, Diesel injection, High pressure
pipe between pump and rail: Removal - Refitting,
page 13B-35) .
aConnect the diesel return pipe to the venturi fitted to
the high pressure pump.aRefit:
-the fuel filter mounting,
-the fuel filter (see 13A, Fuel supply, Fuel filter:
Removal - Refitting, page 13A-4) .
aRefit:
-the engine tie-bar (see 19D, Engine mounting,
Lower engine tie-bar: Removal - Refitting, page
19D-18) ,
-the engine harness channel.
aFit the engine wiring on the engine wiring channel.
aClip on the engine wiring channel.
aConnect to the high pressure pump:
-the diesel supply pipe,
-the diesel return pipe to the diesel filter.
aClip on the high pressure pump pipes.
aRemove the protection on the alternator to prevent
fuel flowing out.
aConnect the connectors of:
-the diesel temperature sensor,
-the flow actuator,
-the injectors,
-the heater plugs.
aRemove the blanking cover which protects the oil
level dipstick guide inlet opening on the cylinder
block.
aRefit:
-the dipstick guide,
-the dipstick,
-the scoop under the scuttle panel grille (see Scoop
under the scuttle panel grille: Removal - Refit-
ting) (56A, Exterior equipment),
-the scuttle panel grille (see Scuttle panel grille:
Removal - Refitting) (56A, Exterior equipment),
-the windscreen wiper arms (see Windscreen wip-
er arm: Removal - Refitting) (85A, Wiping -
Washing).
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 ) (80A, Battery). K9K, and 740
19659
Note:
Make sure that the tab (23) is positioned oppo-
site the mark (24) .

13B-26
DIESEL INJECTION
Flow actuator: Removal - Refitting
K9K
13B
PIECES ET INGREDIENTS POUR LA REPARATION
Pièces à remplacer systématiquement :
-the high pressure pipe between the rail and injector
number 4,
-the clip between high pressure pipes number 3 and 4.
Ingrédients :
-cleaning cloths,
-set of K9K blanking plugs (injection DELPHI).
REMOVAL
I - REMOVAL PREPARATION OPERATION
aDisconnect the battery (see ) (MR 411, 80A, Bat-
tery).
aRemove the front engine cover.aRemove:
-the dipstick,
-the dipstick guide nut (1) ,
-the oil level dipstick guide.
aBlock the dipstick guide inlet opening on the cylinder
block.
aDisconnect the connectors:
-the heater plugs,
-the injectors,
-the flow actuator,
-diesel fuel temperature sensor.
aProtect the alternator from fuel outflow. Special tooling required
Mot. 1746Offset wrench for tightening
High Pressure pump pipes.
Equipment required
Diagnostic tool
Tightening torquesm
fuel flow actuator bolts
on the high pressure
pump6 Nm
high pressure pipe
unions between the rail
and injector number 4
(yellow)24 Nm
high pressure pipe
unions between the rail
and injector number 4
(silver)28 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) .
114527

13B-27
DIESEL INJECTION
Flow actuator: 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) .
aUnclip the fuel supply pipes at (2) .
aDisconnect the high pressure pump from:
-the diesel supply pipe (3) ,
-the diesel return pipe (4) to the diesel filter.
aRemove the high pressure pump pipes.aUnclip the neck at (5) .
aRemove the neck wiring harness.
aRemove:
-the neck nut (6) ,
-the neck.
aClean the high pressure pipe unions (7) between the
rail and injector number 4 (see 13B, Diesel injec-
tion, Diesel injection: Precautions for the repair,
page 13B-1) .
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
121418
WARNING
To avoid any corrosion or damage, protect the
areas on which fuel is likely to r un.

13B-28
DIESEL INJECTION
Flow actuator: Removal - Refitting
K9K
13B
aRemove:
-the clip (8) from the high pressure pipes between
the rail and injectors number 3 and 4,
-the high pressure pipe between the rail and injector
number 4 and discard it.II - OPERATION FOR REMOVAL OF PART
CONCERNED
aRemove the bolts (9) from the fuel flow actuator on
the high pressure pump.
aRemove the fuel flow actuator (by hand with small
tugs and successive turns).
aMake sure that no impurities enter the high pressure
pump when the fuel flow actuator is removed.
102315
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.
102315
WARNING
Do not use the electr ical connector as a lever
ar m.
WARNING
Do not blast with compressed air once the fuel
circuit is open, otherwise impurities may enter
the system. Only use cleaning cloths.