Page 281 of 652

12A-16
FUEL MIXTURE
Air filter unit: Removal - Refitting
D7F
12A
PARTS AND CONSUMABLES FOR THE
REPAIR WORK
aParts always to be replaced :
-the air filter.
REMOVAL
I - REMOVAL PREPARATION OPERATION
aRemove the anti-interference wire bolt.
aDisconnect the ignition coil connector (1) .
aRemove the ignition coil bolts (2) .
aMove aside the ignition coil.
aRemove the air filter box cover (3) .II - OPERATION FOR REMOVAL OF PART
CONCERNED
aDisconnect:
-the non-return valve pipe on the brake servo,
-the petrol vapour rebreather pipe union from the in-
take distributor.
aMove aside the air filter box air inlet duct.
aUndo the air filter box air outlet duct clip.
aRemove the air filter box air outlet duct.
aUnclip the air filter box elastic straps.
aRemove:
-the air filter box,
-the air filter from the air filter unit.
REFITTING
I - REFITTING PREPARATIONS OPERATION
If reusing the air filter box
aUse a compressed air nozzle to clean the air filter
housing to get rid of any foreign bodies.
II - REFITTING OPERATION FOR PART
CONCERNED
aRefit the air filter box fitted with a new seal.
aClip on the air filter box elastic straps.
aRefit the air filter box air outlet duct.
aTighten the air filter box air outlet duct clip.
aRefit the air filter box air inlet duct.
aConnect:
-the non-return valve pipe on the brake servo,
-the petrol vapour rebreather pipe union from the in-
take distributor.
III - FINAL OPERATION.
aFit the ignition coil.
aRefit the ignition coil bolts.
aConnect the connector of the ignition coil.
aRefit the anti-interference wire bolt. Equipment required
compressed air nozzle
120404
Page 334 of 652
12B-9
TURBOCHARGING
Turbocharger: Removal - Refitting
D4F, and 780 or 782
12B
aUndo the compressor discharge air pipe clip (8) .
aDisconnect:
-the turbocharger discharge air pipe,
-the oil vapour recirculation pipe from the air filter
unit air outlet pipe (9) ,
-the petrol vapour recirculation pipe from the air fil-
ter unit air outlet pipe (10) ,
-the turbocharging regulation solenoid valve con-
nector from the turbocharger (11) ,
-the ignition coil connector (12) .
aUnclip the wiring from the turbocharger coolant rigid
pipe strut.
aRemove:
-the upper and lower nuts (13) from the turbocharg-
er,
-the turbocharger,
-the turbocharger seal.
If replacing the turbocharger
aUnclip the clips of the turbocharging pressure regu-
lation pipes.
aDisconnect the turbocharging pressure regulation
pipes.
122826121201
121202
Page 335 of 652

12B-10
TURBOCHARGING
Turbocharger: Removal - Refitting
D4F, and 780 or 782
12B
aLoosen the clip of the air filter unit air outlet pipe.
aRemove:
-the air outlet pipe of the air filter unit,
-the turbocharger cooling pipe bracket bolt,
-the turbocharger cooling hollow pipe bolts,
-the turbocharger cooling pipes.
REFITTING
I - REFITTING PREPARATION OPERATION
aparts always to be replaced: Turbocharger nut.
aparts always to be replaced: seal between ex-
haust manifold and turbocharger.
aparts always to be replaced: Turbocharger cool-
ant pipe if replacing the turbocharger.
aUse a SURFACE CLEANER (see Vehicle: Parts
and consumables for the repair) (04B, Consuma-
bles - Products) to clean and degrease the sealing
surfaces:
-of the turbocharger (if being reused),
-of the exhaust manifold.
II - REFITTING OPERATION FOR PART
CONCERNED
aRefit:
-a new turbocharger seal,
-the turbocharger,
-new turbocharger nuts.
aTorque tighten the turbocharger nuts (21 N.m).
1 - If replacing the turbocharger
aRefit:
-the turbocharger cooling pipes,
-the turbocharger cooling hollow pipe bolts,
-the turbocharger cooling pipe bracket bolts,-the air outlet pipe of the air filter unit.
aTighten the clip of the air outlet pipe on the air filter
unit.
aTorque tighten:
-the turbocharger cooling pipe hollow bolts (30
N.m),
-the turbocharger cooling pipe bracket bolts (10
N.m).
a
aConnect the turbocharging pressure regulation
pipes.
aClip on the clips of the turbocharging pressure regu-
lation pipes.
2 - If the turbocharger is not being replaced
aClip the wiring onto the turbocharger coolant rigid
pipe strut.
aConnect:
-the turbocharger discharge air pipe,
-the oil vapour recirculation pipe on the air filter unit
air outlet pipe,
-the petrol vapour recirculation pipe on the air filter
unit air outlet pipe,
-the turbocharging regulation solenoid valve con-
nector from the turbocharger,
-the ignition coil connector.
aTighten the turbocharger discharge air pipe clip.
aRefit the turbocharger oil supply pipe (see 12B, Tur-
bocharging, Turbocharger oil pipe: Removal -
Refitting, page 12B-12) .
aRefit the turbocharger cooling pipe strut bolt.
aConnect the turbocharger cooling hoses.
aFit the turbocharger cooling hose clips using the tool
(Mot. 1448).
aRemove the tools (Ms. 583).
aRefit the turbocharger oil return pipe (see 12B, Tur-
bocharging, Turbocharger oil pipe: Removal -
Refitting, page 12B-12) . WARNING
Ensure that no foreign bodies enter the turbine or
compressor during the refitting operation.
Check that the turbocharger oil return pipe is not
partially or completely blocked by scale. Check
that there are no leaks. If there are, replace the
part.Note:
Dur ing this operation, use a set of feeler gauges
to ensure that there is a minimum clearance of 3
mm between the turbocharger water outlet pipe
and the turbocharger heat shield.
Page 386 of 652

13B-25
DIESEL INJECTION
High pressure pump: Removal - Refitting
K9K
13B
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.
REPLACING THE HIGH PRESSURE PUMP
aIf replacing the high pressure pump, reprime the die-
sel circuit using the Diagnostic tool.
aConnect the Diagnostic tool to the vehicle.
aConnect to the diesel injection computer.
aRun command AC212 « NEW PUMP CHAMBER
FILLING » (see Fault finding - Replacement of
components) (13B, Diesel injection).
aFollow the instructions on the Diagnostic tool until
the command is completed.
aStart the engine.
aIf the engine does not start or if the startup sequence
is interrupted:
-switch off the ignition,
-wait 30 seconds,
-restart the engine.
aUsing the Diagnostic tool, clear any faults stored in
the diesel injection computer.Note:
Never start the engine until the pump has been
reprimed.
Also comply with the operation instructions pro-
vided to prevent the high pressure pump from
being damaged internally, due to running with no
load and no diesel lubrication.
Note:
The starting phase may last up to 20 seconds.
Page 425 of 652

14A-7
ANTIPOLLUTION
Fuel vapour absorber: Check
D4F or D7F
14A
I - CHECKING THE FUEL VAPOUR ABSORBER
aOn the fuel vapour absorber, plug the circuit coming
from the fuel tank.
aConnect the pressure gauge of the (Mot. 1311-01)
to the fuel vapour absorber breather outlet.
aWith the engine at idle speed, check that no vacuum
is present at the fuel vapour absorber breather out-
let. In the same way, the control value read by the
Diagnostic tool in parameter « fuel vapour absorb-
er bleed solenoid valve OCR » remains minimal X
less than or equal to 1.5%.
Is there a vacuum?
-Yes: With the ignition off, use a manual vacuum
and pressure pump to apply a vacuum of 500
mbar to the solenoid valve outlet. The vacuum
pressure should not vary by more than 10 mbar
over 30 seconds.
•Does the pressure vary?
-Yes: the solenoid valve is faulty, replace it (see
17B, Petrol injection, Petrol injection: List
and location of components, page 17B-1) .
-No: if it is an electrical problem, check the circuit
(see MR 413 Fault finding, 17B, Petrol injec-
tion, Fault finding - Interpretation of faults,
Canister bleed solenoid valve circuit).
-No: In bleeding condition (see « bleeding
condition » ), the vacuum should increase. In the
same time, the value of the parameter on the Diag-
nostic tool increases.
II - CHECKING THE FUEL VAPOUR ABSORBER-
TANK CONNECTION
aCheck this connection by connecting a manual vac-
uum and pressure pump to the pipe leading to the
fuel vapour absorber.Special tooling required
Mot. 1311-01Pressure gauges and petrol
pressure measur ing unions.
Equipment required
Diagnostic tool
man ual vacuum and pressure pump
Page 457 of 652
17A-1
IGNITION
Coils: Removal - Refitting
D7F
17A
PARTS AND CONSUMABLES FOR THE
REPAIR WORK
aConsumable (see Vehicle: Parts and consuma-
bles for the repair) :
-Fluostar 2L.
REMOVAL
I - REMOVAL PREPARATION OPERATION
aDisconnect the battery ( (see Battery: Removal -
Refitting) ).
II - OPERATION FOR REMOVAL OF PART
CONCERNED
a
aDisconnect:
-the wiring (1) from the ignition coil,
-the connector (2) from the ignition coil.
aRemove the bolt from the interference suppressor.
aMove aside the air filter unit cover (3) .
aRemove:
-the bolts (4) from the ignition coil,
-the ignition coil.
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aRefit:
-the ignition coil,
-the ignition coil bolts.
aRefit the air filter unit cover.
120404
WARNING
To disconnect the spark plug leads, pull on the
extensions and not on the leads.
Page 458 of 652
17A-2
IGNITION
Coils: Removal - Refitting
D7F
17A
aWhen refitting the spark plug wiring, always apply a
bead of FLUOSTAR 2L (2 mm in diameter) to the in-
ner edge of the high-tension caps on the side of the
spark plugs and coil.
aConnect:
-the ignition coil connector,
-the ignition coil wiring.
II - FINAL OPERATION
aConnect the battery ( (see Battery: Removal - Re-
fitting) ).
106640
Page 459 of 652
17A-3
IGNITION
Coils: Removal - Refitting
D4F, and 772
17A
PARTS AND CONSUMABLES FOR THE
REPAIR WORK
aConsumable (see Vehicle: Parts and consuma-
bles for the repair) :
-Fluostar 2L.
REMOVAL
I - REMOVAL PREPARATION OPERATION
aDisconnect the battery (see Battery: Removal - Re-
fitting) .
aRemove the air filter unit (see 12A, Fuel mixture,
Air filter unit: Removal - Refitting, page 12A-13) .
II - OPERATION FOR REMOVAL OF PART
CONCERNED
a
aDisconnect:
-the ignition coil high voltage wiring harness,
-the ignition coil connector.aRemove:
-the ignition coil bolts ,
-the ignition coil.
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aRefit:
-the ignition coil,
-the ignition coil bolts.
120300
WARNING
To disconnect the spark plug leads, pull on the
extensions and not on the leads.
113044