Page 419 of 652

14A-1
ANTIPOLLUTION
Oil vapour rebreathing circuit: Descriptions
K9K
14A
I - PRESENTATION OF THE CIRCUIT
Operating phase A
Operating phase BOperating phase A :
-with the engine at low load, the vacuum in the air pipe
at the air filter box outlet is not sufficient to activate the
membrane of the oil vapour rebreathing valve, fitted
with a weighted spring. Oil vapours are aspirated in
large quantities due to the vacuum in the air pipe at
the air filter box outlet.
Operating phase B :
-At engine medium and high load, the vacuum in the
pipe at the air filter box outlet attracts the membrane
of the oil vapour rebreathing valve. The hole allowing
the oil vapours to pass through in large quantities is
therefore closed and the oil vapours are aspirated in
low quantities via a calibrated jet.
II - CHECK
To ensure the antipollution system works properly, the
oil vapour rebreathing circuit must be kept clean and in
good condition.
20965
20965-1
(P) Atmospher ic pressure
(1) Rocker cover
(2) Oil vapour recirculation pipe
(3) Oil vapour recirculation valve
(4) Air filter box outlet air pipe
(5) Turbocharger
Page 433 of 652

14A-15
ANTIPOLLUTION
Exhaust gas recirculation assembly: Removal - Refitting
K9K
14A
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
aDisconnect the battery (see ) (80A, Battery).
aRemove:
-the engine cover,
-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),
-the air filter unit (see 12A, Fuel mixture, Air filter
unit: Removal - Refitting, page 12A-13) ,
-the EGR solenoid valve (see 14A, Antipollution,
Exhaust gas recirculation solenoid valve: Re-
moval - Refitting, page 14A-10) ,
-the lower engine tie-bar (see 19D, Engine mount-
ing, Lower engine tie-bar: Removal - Refitting,
page 19D-18) ,
-the catalytic converter (see 19B, Exhaust, Cata-
lytic converter: Removal - Refitting, page 19B-
12) ,
-the rigid exhaust gas recirculation pipe (see 14A,
Antipollution, Exhaust gas recirculation rigid
pipe: Removal - Refitting, page 14A-19) .aUndo the clip (1) of the air filter unit air outlet pipe on
the turbocharger.
aDisconnect the oil vapour rebreathing pipe (2) by
carefully separating the brackets (3) .
aRemove the air outlet pipe from the air filter box (4) . Special tooling required
Ms. 583Pipe clamps .
Tightening torquesm
exhaust gas recircula-
tion unit assembly bolts25 N.m
coolant circulation cover
bolts on the exhaust gas
cooler12 N.m
intercooler air outlet
pipe clip at the damper
valve end5.5 N.m
121633
Page 436 of 652

14A-18
ANTIPOLLUTION
Exhaust gas recirculation assembly: Removal - Refitting
K9K
14A
aRefit:
-new seals on the coolant circulation cover,
-the coolant circulation cover on the exhaust gas
cooler.
aTorque tighten the coolant circulation cover bolts
on the exhaust gas cooler (12 N.m).
aRemove the tool (Ms. 583) from the coolant inlet and
outlet hoses of the exhaust gas cooler.
III - FINAL OPERATION
aFit the intercooler air outlet pipe at the damper valve
end.
aConnect the intercooler air outlet pipe on the side of
the damper valve.
aTorque tighten the intercooler air outlet pipe clip
at the damper valve end (5.5 N.m).
aRefit the intercooler air outlet pipe nut on the lifting
eye.
aConnect the turbocharging pressure regulator vacu-
um pipe.
aClip:
-the turbocharging pressure regulator vacuum pipe,
-the vacuum pipe from the brake servo.
aConnect the brake servo vacuum pipe.
aFit the intercooler air inlet pipe at the turbocharger
end.
aRefit the intercooler air inlet pipe nut at the turbo-
charger end on the lifting eye.
aConnect the intercooler air inlet pipe at the turbo-
charger end.
aClip on the intercooler air inlet pipe clip at the turbo-
charger end.
aRefit the air outlet pipe onto the air filter unit.
aTighten the air filter unit air outlet pipe clip on the tur-
bocharger.
aConnect the oil vapour rebreathing pipe.
aRefit:
-the exhaust gas recirculation rigid pipe (see 14A,
Antipollution, Exhaust gas recirculation rigid
pipe: Removal - Refitting, page 14A-19) ,-the catalytic converter (see 19B, Exhaust, Cata-
lytic converter: Removal - Refitting, page 19B-
12) ,
-the lower engine tie-bar (see 19D, Engine mount-
ing, Lower engine tie-bar: Removal - Refitting,
page 19D-18) ,
-the EGR solenoid valve (see 14A, Antipollution,
Exhaust gas recirculation solenoid valve: Re-
moval - Refitting, page 14A-10) ,
-the air filter unit (see 12A, Fuel mixture, Air filter
unit: Removal - Refitting, page 12A-13) ,
-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),
aConnect the battery (see ) (80A, Battery).
aFill and bleed the cooling system (see 19A, Cool-
ing, Cooling system: Draining - Refilling, page
19A-9) .
aRefit the engine cover. K9K, and 718
Page 449 of 652
16A-10
STARTING - CHARGING
Starter: Removal - Refitting
D4F or D7F
16A
REMOVAL
I - REMOVAL PREPARATION OPERATION
aDisconnect the battery (see ) (80A, Battery).
aRemove the engine oil dipstick.
aRemove the air filter unit (see 12A, Fuel mixture,
Air filter unit: Removal - Refitting, page 12A-13) .
aDisconnect the air filter unit air inlet pipe from the air
filter unit cover (1) .
aMove the air filter unit air inlet pipe away from the air
filter unit cover.aDisconnect the pinking sensor connector (2) .
aRemove the engine wiring channel bolt from the
gearbox.
aUnclip the engine wiring channel from the gearbox.
aMove aside the engine wiring channel. Tightening torquesm
starter upper bolt44 N.m
starter electrical supply
nut8N.m
D4F, and 772
D4F, and 780 or 782
122833
120512
120414
Page 452 of 652
16A-13
STARTING - CHARGING
Starter: Removal - Refitting
D4F or D7F
16A
aClip the engine wiring channel onto the gearbox.
aRefit the engine wiring channel bolt to the gearbox.
aTighten the engine wiring channel bolt on the gear-
box.
aConnect the pinking sensor connector.
aFit the air filter unit air inlet pipe on the air filter unit
cover.
aConnect the air filter unit air inlet pipe on the air filter
unit cover.
aRefit the air filter unit (see 12A, Fuel mixture, Air fil-
ter unit: Removal - Refitting, page 12A-13) .
aRefit the engine oil dipstick.
aConnect the battery (see ) (80A, Battery). D4F, and 780 or 782
D4F, and 772
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 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
Page 460 of 652
17A-4
IGNITION
Coils: Removal - Refitting
D4F, and 772
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 high voltage wiring harness.
II - FINAL OPERATION
aRefit the air filter unit (see 12A, Fuel mixture, Air fil-
ter unit: Removal - Refitting, page 12A-13) .
aConnect the battery (see Battery: Removal - Refit-
ting) .
106640