Page 392 of 652
13B-31
DIESEL INJECTION
Venturi: Removal - Refitting
K9K
13B
PARTS AND CONSUMABLES FOR THE
REPAIR WORK
aConsumable:
-cleaning cloths (Part no. 77 11 211 707).
REMOVAL
I - REMOVAL PREPARATION OPERATION
aRemove the front engine cover.
aProtect the alternator from fuel outflow.aDisconnect the diesel return pipe from the high pres-
sure pump (1) .
aInsert the blanking plugs.
aUnclip the diesel return pipe on the neck then re-
move it from the high pressure pump. Tightening torquesm
venturi bolt on the high
pressure pump5.5 Nm
Note:
Observe the repair precautions (see 13B, Die-
sel injection, Diesel injection: Precautions for
the repair, page 13B-1) .
Make sure that you have a new venturi before
opening the fuel circuit.
120045
Note:
Be prepared for the outflow of diesel.
WARNING
Keep the pipe unions away from contaminated
areas.
Page 393 of 652

13B-32
DIESEL INJECTION
Venturi: Removal - Refitting
K9K
13B
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aDisconnect the diesel return pipe (2) on the venturi.
aFit anti-contamination caps.
aRemove the high pressure pump venturi bolt (3) .
aRemove the venturi (by hand with small tugs and
successive turns).
aMake sure that no impurities enter the high pressure
pump when the venturi is removed.REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
a
aRefit the venturi to the high pressure pump.
aRefit the venturi bolt to the high pressure pump.
aTorque tighten the venturi bolt on the high pres-
sure pump (5.5 Nm).
aRemove the blanking plugs.
aConnect the diesel return pipe to the venturi.
II - FINAL OPERATION.
aClip the high pressure pump diesel return pipe onto
the neck.
aRemove the blanking plugs.
aConnect the diesel return pipe to the high pressure
pump.
aAttach the diesel return pipe to the neck.
aRemove the protection on the alternator to prevent
fuel flowing out.
102316
Note:
Make preparations for fuel outfl ow.
Note:
Make preparations for fuel outfl ow.
WARNING
Do not blast with compressed air once the fuel
circuit is open, otherwise impurities may enter
the system. Only use cleaning cloths.
WARNING
Do not remove the components from their pack-
aging until just before fitting them to the vehicle.
Note:
Do not lubricate the seals with grease or old die-
sel fuel. Use the applicator provided in the kit for
the new par t.
Page 396 of 652

13B-35
DIESEL INJECTION
High pressure pipe between pump and rail: Removal - Refitting
K9K
13B
PARTS AND CONSUMABLES FOR THE REPAIR
Pièces à remplacer systématiquement :
-the high pressure pipe between the pump and the rail.
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 and the starter from fuel out-
flow. Special tooling required
Mot. 1746Offset wrench for tightening
High Pressure pump pipes.
Equipment required
Diagnostic tool
Tightening torquesm
high pressure pipe
unions between the
pump and the yellow rail24 Nm
high pressure pipe
unions between the
pump and the silver rail28 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
Page 399 of 652

13B-38
DIESEL INJECTION
High pressure pipe between pump and rail: Removal - Refitting
K9K
13B
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 dipstick,
-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.
Page 400 of 652

13B-39
DIESEL INJECTION
High pressure pipe between rail and injector: Removal - Refitting
K9K
13B
PARTS AND CONSUMABLES FOR THE REPAIR
Pièces à remplacer systématiquement :
-the high pressure pipes between the rail and the in-
jectors.
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 and the starter from fuel out-
flow. Special tooling required
Mot. 1746Offset wrench for tightening
High Pressure pump pipes.
Equipment required
Diagnostic tool
Tightening torquesm
high pressure pipe
unions between the
pump and the yellow rail24 Nm
high pressure pipe
unions between the
pump and the silver rail28 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) .
WARNING
Obtain the special high pressure injection circuit
blanking plugs kit.
Always replace any high pressure pipe or high pres-
sure pipe clip removed with a new one.
114527
Page 403 of 652

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.
Page 410 of 652

13B-49
DIESEL INJECTION
Fuel temperature sensor: Removal - Refitting
C44, and K9K
13B
REMOVAL
I - REMOVAL PREPARATION OPERATION
aRemove the front engine cover.
aDisconnect the battery ( (see Battery: Removal -
Refitting) ).
aProtect the alternator from fuel outflow.
aDisconnect:
-the heater plug connectors (1) from cylinders 3 and
4,
-the injector connectors (2) from cylinders 3 and 4.II - OPERATION FOR REMOVAL OF PART
CONCERNED
aDisconnect the fuel temperature sensor connector.
aRemove the fuel temperature sensor (3) from the
high pressure pump.
aMake sure that no impurities enter the high pressure
pump when the fuel sensor is removed.
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aRefit the fuel temperature sensor onto the high pres-
sure pump. Equipment required
Diagnostic tool
Tightening torquesm
fuel temperature sensor15 Nm
121418
102317
Note:
Prepare for the outflow of fuel.
WARNING
Do not blast with compressed air once the fuel
circuit is open, otherwise impurities may enter
the system. Only use cleaning cloths.
Note:
Do not lubricate the seals with grease or old die-
sel fuel.
Use the applicator provided in the kit for the new
par t.
Page 411 of 652
13B-50
DIESEL INJECTION
Fuel temperature sensor: Removal - Refitting
C44, and K9K
13B
aTorque tighten the fuel temperature sensor (15
Nm).
aConnect the fuel temperature sensor connector.
II - FINAL OPERATION.
aConnect:
-the injector connectors for cylinders 3 and 4,
-the heater plug connectors for cylinders 3 and 4.
aRemove the protection on the alternator to prevent
fuel flowing out.
aConnect the battery ( (see Battery: Removal - Re-
fitting) ).
aStart the engine and check that there are no leaks.
aRefit the engine cover.
aUse the Diagnostic tool to check for an absence of
stored faults; deal with these and clear them as nec-
essary.