12B-1
TURBOCHARGING
Turbocharging: Precautions for the repair
D4F or K9K
12B
I - TURBOCHARGER: GENERAL INSTRUCTIONS
For the turbocharging pressure regulator check (see
Fault finding - Tests) (Technical Note 3419A, 12B,
Turbocharging).
II - TURBOCHARGER CIRCUIT DIAGRAMIII - APPLICATION CONDITIONS OF
INSTRUCTIONS
The instructions below must be followed when repla-
cing a turbocharger due to mechanical damage:
-damage to the bearing system,
-broken shaft or turbine wheel,
-compressor wheel rubbing against the turbocharger
casing,
-broken or damaged compressor wheel,
-extensive clogging of the turbine wheel casing (hard
deposits).
FOR THE AIR CIRCUIT:
-Consequences:
•swarf or metal objects in the turbocharger inlet and
outlet pipes,
•oil in the air circuit (collected in the intercooler).
-Risks (after replacing the turbocharger):
•metal objects sucked in by the compressor wheel
(destruction of the turbocharger).
FOR THE LUBRICATION CIRCUIT:
-Consequences:
•swarf found in the engine oil circuit,
•circulation of swarf within the circuit.
-Risks (after replacing the turbocharger):
•premature wear on the bearing system (destruction
of turbocharger).
INSTRUCTIONS:
-Drain the engine oil (see 10A, Engine and cylinder
block assembly, Engine oil: Draining - Refilling,
page 10A-22)
-Replace the oil filter (see 10A, Engine and cylinder
block assembly, Oil filter: Removal - Refitting,
page 10A-29) .
-Replace the seals and fittings,
-Carry out the following only if the compressor wheel is
broken or rubbing against the turbocharger casing:
•Drain the intercooler, Equipment required
par ts washer
WARNING
The turbocharger pressure regulator rod must not
be adjusted.
112666
(1) Air filter unit
(2) Air flowmeter
(3) Compressor wheel
(4) Intercooler
(5) Inlet distributor
(6) Exhaust manifold
(7) Turbine wheel
(8) Bearing system (bearing +
wheel shaft)
(A) Air filter box air outlet pipe
(B) Turbocharger air outlet pipe
(C) Intercooler air outlet pipe
WARNING
Metal objects may enter the oil and air circuits as a
result of a broken turbocharger.
Failure to follow the INSTRUCTIONS listed will lead
to the turbocharger breaking again.
12B-2
TURBOCHARGING
Turbocharging: Precautions for the repair
D4F or K9K
12B
•Clean the turbocharger air pipes.
IV - AIR CIRCUIT*: INSTRUCTIONS FOLLOWING
MECHANICAL DAMAGE TO THE TURBOCHARGER
Remove the intercooler if fitted to the vehicle (see 12B,
Turbocharging, Intercooler: Removal - Refitting,
page 12B-18) .
Turn the intercooler over and allow the oil inside to
drain out.Check that there are no metal objects inside the air
flowmeter (2) .
Remove:
-the air pipe(between the air filter unit and the turbo-
charger) (A) ,
-the air pipe (B) (between the turbocharger and the in-
tercooler).
For air pipes comprising several components:
-mark (10) the fitting position of each component,
-separate all the components. Note:
When carrying out an oper ation on the air or lubri-
cation circuit, it is necessary to plug the open holes
to prevent any risk of foreign bodies entering the
system.
Note:
(*) These instructions for the air circuit are only to
be followed in the case of:
-broken compressor wheel,
-compressor wheel rubbing against the turbo-
charger casing.
110738
Note:
If the compressor wheel (9) is damaged, metal
objects are ejected inside the air pipes.
112772
112770
12B-3
TURBOCHARGING
Turbocharging: Precautions for the repair
D4F or K9K
12B
One by one, clean the pipes removed with the parts
washer :
-brush as much of the inside of the pipe as possible
(only use brushes with plastic bristles),
-wash plenty of cleaning product from the cleaning sta-
tion through the pipe,
-allow the cleaned pipe to drain by standing it upright,
-ensure the cleaning product has drained out com-
pletely (check areas where liquid may be retained,
e.g. gaiters, resonators etc.).
Dry the pipes one by one using a compressed air spray
gun.
For pipes comprising several components:
-assemble the components, taking note of their correct
fitting position (10) .
Refit:
-the air pipe(between the air filter unit and the turbo-
charger) (A) ,
-the air pipe (B) (between the turbocharger and the in-
tercooler).
Refit the intercooler, if fitted to the vehicle (see 12B,
Turbocharging, Intercooler: Removal - Refitting,
page 12B-18) .V - LUBRICATION CIRCUIT**: INSTRUCTIONS
FOLLOWING MECHANICAL DAMAGE TO THE
TURBOCHARGER
Drain the engine oil (see 10A, Engine and cylinder
block assembly, Engine oil: Draining - Refilling,
page 10A-22) .
Replace the oil filter (see 10A, Engine and cylinder
block assembly, Oil filter: Removal - Refitting, page
10A-29) .
Only fill the engine with a suitable oil type (see Engine
oil: Specifications) (Technical Note 6013A, 04A, Lu-
bricants).
VI - GENERAL INSTRUCTIONS TO BE FOLLOWED
WHEN REMOVING A TURBOCHARGER
Always replace:
-the oil supply pipe:
•if the pipe is blocked, even partially (due to scale,
carbonised oil etc.),
•if the pipe is fitted with self-retaining seals.
-the oil return pipe:
•if the pipe is blocked, even partially (due to scale,
carbonised oil etc.),
•if the pipe is fitted with self-retaining seals.
-all seals that have been removed,
-all fittings that have been removed.
When starting the engine:
-do not accelerate,
-allow the engine to run for 1 minute,the time taken for
the oil circuit pressure to increase (until the oil pres-
sure warning light on the instrument panel goes out),
-accelerate several times at no load,
-check the air circuit and the oil circuit for leaks.
112771
Note:
(**) These instructions relating to the lubrication cir-
cuit must always be followed in all cases of
mechanical damage as listed above.
WARNING
Failure to observe the following procedure may lead
to destr uction of the turbocharger.
12B-6
TURBOCHARGING
Turbocharger: Removal - Refitting
K9K
12B
aRemove:
-the turbocharger nuts (8) ,
-the turbocharger,
-the turbocharger seal.
REFITTING
I - REFITTING PREPARATION OPERATION
aparts always to be replaced: seal between ex-
haust manifold and turbocharger.
aIf there has been a fault in the turbocharger, check
that the inlet circuit assembly is not full of oil. If it is,
remove the components to be cleaned, and clean
them using a cleaning trough or a parts washer
then dry them using a compressed air nozzle.
aIf the turbocharger is being reused, clean it using a
cleaning trough or a parts washer then dry it using
a compressed air nozzle.
aUse ABRASIVE PADS (see Vehicle: Parts and
consumables for the repair) (04B, Consumables -
Products) to clean the bearing faces:
-the exhaust manifold - turbocharger,
-the turbocharger - catalytic converter,
-the turbocharger - oil return pipe.aUse SURFACE CLEANER (see Vehicle: Parts
and consumables for the repair) (04B, Consuma-
bles - Products) and clean cloths to degrease the
mating faces:
-of the exhaust manifold on the turbocharger side,
-of the turbocharger on the exhaust manifold side,
-of the turbocharger on the catalytic converter side,
-of the turbocharger on the oil return pipe side,
-of the catalytic converter on the turbocharger side.
aIn the event of replacement, torque tighten the
studs on the turbocharger (9 N.m).
II - REFITTING OPERATION FOR PART
CONCERNED
aRefit the turbocharger fitted with a new seal.
aTorque tighten the turbocharger nuts (28 N.m).
aConnect:
-the turbocharging pressure regulator pipe,
-the intercooler air inlet pipe on the turbocharger
side.
aClip the intercooler air inlet pipe on the turbocharger
side.
aConnect the turbocharger air outlet pipe to the turbo-
charger.
aTighten the clip of the turbocharger air outlet pipe on
the turbocharger.
aRefit the turbocharger oil pipes (see 12B, Turbo-
charging, Turbocharger oil pipe: Removal - Re-
fitting, page 12B-12) .
aRefit the air outlet pipe onto the air filter unit.
112327
WARNING
The joint faces must be clean, dr y and free from
grease (avoid finger marks).
K9K, and 718
K9K, and 740
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.
12B-18
TURBOCHARGING
Intercooler: Removal - Refitting
D4F, and 780 or 782 – K9K, and 718
12B
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
aRemove:
-the front wheels (see Wheel: Removal - Refitting)
(35A, Wheels and tyres),
-the front wheel arch liners (see Front wheel arch
liner: Removal - Refitting) (55A, Exterior protec-
tion),
-the front bumper (see Front bumper: Removal -
Refitting) (55A, Exterior protection).
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aRemove the intercooler bolts (1) .
aLoosen the clip on the intercooler air outlet pipe (2) .
aDisconnect the intercooler air outlet pipe.
aUnclip the turbocharger air outlet pipe (3) .
aDisconnect the turbocharger air outlet pipe.
aRemove:
-the intercooler,
-the air deflector clips,
-the air deflector,
-the metal mounting.
REFITTING
I - REFITTING PREPARATION OPERATION
aCheck that the intercooler is not full of oil. In this
case, clean it with cleaning agent and let it dry (see
Vehicle: Parts and consumables for the repair)
(04B, Consumables - Products).
II - REFITTING OPERATION FOR PART
CONCERNED
aRefit:
-the metal mounting,
-the air deflector,
-the air deflector clips,
-the intercooler.
aConnect the turbocharger air outlet pipe.
aClip on the turbocharger air outlet pipe.
aConnect the intercooler air outlet pipe.
aTighten the clip on the intercooler outlet pipe.
aRefit the intercooler bolts.
III - FINAL OPERATION
aRefit:
-the front bumper (see Front bumper: Removal -
Refitting) (55A, Exterior protection),
-the front wheel arch liners (see Front wheel arch
liner: Removal - Refitting) (55A, Exterior protec-
tion),
-the front wheels (see Wheel: Removal - Refitting)
(35A, Wheels and tyres).
122830
13A-9
FUEL SUPPLY
Fuel pressure: Check
D4F or D7F
13A
CHECK
aI - PREPARATION OPERATION FOR CHECK
aEnsure you have a checking tool (Mot. 1311-01) and
a “T” union (Mot. 1311-08).
aRemove the oil filler neck.
II - TEST OPERATION
aDisconnect the petrol inlet pipe from the injector rail. Special tooling required
Mot. 1311-01Pressure gauges and petrol
pressure measur ing unions.
Mot. 1311-08Union for taking fuel pres-
sure measurements .
IMPORTANT
During this operation, be sure to:
-refrain from smoking or bringing red hot objects
close to the working area,
-be careful of fuel splashes when disconnecting
the union.
IMPORTANT
Wear goggles with side protectors for this opera-
tion.
IMPORTANT
Wear leaktight gloves (Nitrile type) for this opera-
tion.
WARNING
To avoid any corrosion or damage, protect the
areas on which fuel is likely to run.
116887
D4F
13A-10
FUEL SUPPLY
Fuel pressure: Check
D4F or D7F
13A
aConnect:
-the pipe fitted with a pressure checking gauge with
the “T” union of the tool (Mot. 1311-08),
-the “T” union to the rail,
-the petrol inlet duct to the “T” union.
aRefit the oil filler neck.aConnect:
-the pipe fitted with a pressure checking gauge with
the “T” union of the tool (Mot. 1311-08),
-the “T” union to the rail,
-the petrol inlet duct to the “T” union.
aRefit the oil filler neck. D4F, and 772
121821
D4F, and 780 or 782
121728