11A-63
TOP AND FRONT OF ENGINE
Timing belt: Removal - Refitting
K4M
11A
aCheck through the lower timing cover window that
the adjustable index (31) is opposite the notch (32) ,
if this is not the case:
-loosen the timing tensioning roller nut by up to one
turn while holding the eccentric with a 6 mm Allen
key,
-gradually move the adjustable index marker (31)
opposite the mark (32) turning the eccentric cam
(33) clockwise.
aTorque tighten the timing tension wheel nut (27
N.m).5 - Checking the timing
aEnsure that the index and the notch on the timing
tensioning roller are in the correct position before
checking the timing.
aScrew in the TDC setting pin (Mot. 1489).
aBring the crankshaft slowly and smoothly to rest
against the TDC setting pin (Mot. 1489).
aPosition (without forcing) the camshaft setting tool
(Mot. 1496) fitted with the (Mot. 1750) (the camshaft
end grooves must be horizontal and offset towards
the bottom).
aRemove:
-the timing tool (Mot. 1496) fitted with the (Mot.
1750),
-the TDC setting pin (Mot. 1489).
109051
103263
14490
Note:
The timing adjustment and tensioning operation
must be repeated if the camshaft setting tool
does not engage .
11A-64
TOP AND FRONT OF ENGINE
Timing belt: Removal - Refitting
K4M
11A
aRefit the lower timing cover flap, checking that the
locating pin (34) fits properly in the notch (35) .
III - FINAL OPERATION
aRefit:
-a new inlet camshaft plug using the (Mot. 1487),
-a new exhaust camshaft plug using the (Mot.
1488),
-the lifting eye.
aClip the wiring onto the lifting eye.aPlace a drop of SILICONE ADHESIVE SEALANT
(see Vehicle: Parts and consumables for the re-
pair) (04B, Consumables - Products) on the thread
of the TDC setting pin plug.
aTorque tighten the TDC setting pin plug (20 N.m).
aRefit the upper timing cover.
aTorque tighten:
-the upper timing cover bolts (41 N.m),
-the upper timing cover nuts (41 N.m).
aPosition the wiring of the upstream oxygen sensor.
aAttach the upstream oxygen sensor wiring.
aConnect the upstream oxygen sensor connector.
aRefit:
-the right-hand suspended engine mounting (see
19D, Engine mounting, Right-hand suspended
engine mounting: Removal - Refitting, page
19D-13) ,
-the rear suspended engine mounting.
aTorque tighten:
-the rear suspended engine reinforcement bolt
(105 N.m),
-the rear suspended engine mounting bolt on
the rear suspended engine mounting support
(105 N.m),
-the rear suspended engine mounting bolt on
the subframe (105 N.m).
aRefit:
-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),
-the throttle valve (see 12A, Fuel mixture, Throttle
valve: Removal - Refitting, page 12A-20) ,
-the air filter unit (see 12A, Fuel mixture, Air filter
unit: Removal - Refitting, page 12A-13) ,
-the accessories belt (see 11A, Top and front of
engine, Accessories belt: Removal - Refitting,
page 11A-3) ,
-the front upper cross member (see Front upper
cross member: Removal - Refitting) (42A, Upper
front structure),
109052
14890
11A-87
TOP AND FRONT OF ENGINE
Camshaft: Removal - Refitting
D4F, and 772
11A
aPre-tighten to torque and in order the camshaft
bearing cap bolts (initial torque) (5 N.m).
aRepeat the following operation for each camshaft
bearing cap bolt, following the correct tightening or-
der:
-loosen the bolts,
-torque and angle tighten the camshaft bearing
cap bolt ( 7 N.m + 50˚ ±± ± ±
6).
2 - Fitting the camshaft plug
aCheck that the camshaft support surfaces are clean.aRefit the camshaft plug using the tool (Mot. 1605).
aFit the lip seal.
3 - Fitting the camshaft lip seal
aCheck that the camshaft support surfaces are clean.
1872420058
18687
11A-112
TOP AND FRONT OF ENGINE
Camshaft: Removal - Refitting
K4M
11A
aRemove the dowel using a roller-type stud remov-
al tool (7) .
b - Cleaning the camshaft
a
c - Refitting
aPlace the camshaft in a vice with ALUMINIUM
JAWS.aRefit the new camshaft dowel (precoated section (8)
on the camshaft side).
aTorque tighten the camshaft dowel (8 N.m) using a
roller-type stud removal tool (9) .
II - REFITTING OPERATION
aTo check if re-priming is necessary, press the top of
the tappet with your thumb. If the tappet piston de-
presses, immerse the tappets in a container full of
diesel then reprime them.
aRefit:
-the hydraulic tappets,
-the valve rockers,
-the inlet camshaft, by lubricating the inlet camshaft
bearings,
-the exhaust camshaft, by lubricating the exhaust
camshaft bearings.
III - FINAL OPERATION
aRefit:
-the rocker cover (see 11A, Top and front of en-
gine, Rocker cover: Removal - Refitting, page
11A-66) ,
109050
WARNING
Clean the thread hole of the camshaft carefully to
prevent foreign bodies from entering the cam-
shaft.
Failure to follow this advice could lead to the
blocking of the oil inlet holes, which would quickly
result in engine damage.
109050
Note:
It is essential to repr ime the hydraulic tappets as
these may become drained if removed for a long
time.
11A-116
TOP AND FRONT OF ENGINE
Cylinder head: Removal - Refitting
K9K
11A
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aRemove:
-the cylinder head bolts,
-the cylinder head,
-the cylinder head gasket.
REFITTING
I - REFITTING PREPARATION OPERATION
aparts always to be replaced: Cylinder head gas-
ket.
aparts always to be replaced: cylinder head bolts.
aparts always to be replaced: turbocharger oil
pipe seal.1 - Cleaning the cylinder head
aApply SUPER CLEANER FOR JOINT FACES (see
Vehicle: Parts and consumables for the repair)
(04B, Consumables - Products) to the areas to be
cleaned.
aWait for approximately ten minutes.
aRemove the residue using a wooden spatula.
aFinish cleaning with a grey abrasive pad.
2 - Checking the gasket face
aCheck the flatness of the cylinder head gasket face
(see Cylinder head: Check) .
3 - Optional additional operations
aWhen replacing the cylinder head, strip the cylinder
head (see Cylinder head: Stripping - Rebuilding) .
19712
WARNING
Do not scrape the joint faces of the aluminium,
any damage caused to the joint face will result in
a risk of leaks.
WARNING
Do not allow this product to dr ip onto the paint-
work.
Clean the cylinder head carefully to prevent for-
eign bodies from entering the oil supply and
return galleries.
Failure to follow this advice could lead to the
blocking of the various oil inlet galleries, which
would quickly result in engine damage.
WARNING
Protect the oilway so that foreign bodies do not
enter the oil pipes in the cylinder head.
Failure to follow this instruction could lead to the
blocking of the oilways, resulting in a rapid deteri-
oration of the camshaft.
Note:
The cylinder head bolts must not be lubricated
before being fitted.
WARNING
No regr inding of the cylinder head is permitted.
11A-117
TOP AND FRONT OF ENGINE
Cylinder head: Removal - Refitting
K9K
11A
aIf necessary, carry out a complete check of the cylin-
der head (see Cylinder head: Check) .
II - REFITTING OPERATION FOR PART
CONCERNED
aBring the pistons to mid-stroke position to prevent
them from coming into contact with the valves during
the tightening of the cylinder head.
aRefit:
-a new cylinder head gasket,
-the cylinder head.
Cylinder head tightening procedure
aRefit the cylinder head bolts.
aFit the cylinder head bolts, without tightening them.
aTighten to torque and in order the cylinder head
bolts (initial torque) (25 N.m).
aCheck that the cylinder head bolts are tightened to
25 Nm.
aAngle tighten the cylinder head bolts (270˚ ±± ± ±
10˚) in
order using a cylinder head bolt tightening gauge
(angular measuring type).
III - FINAL OPERATION
aRefit:
-the timing end bracket on the air filter box.
-the timing end bracket bolt on the air filter box,-the two high pressure pipes between the rail and
injector at the timing end (see 13B, Diesel injec-
tion, High pressure pipe between rail and injec-
tor: Removal - Refitting, page 13B-39) ,
-the rocker cover (see 11A, Top and front of en-
gine, Rocker cover: Removal - Refitting, page
11A-66) ,
-the oil return pipe fitted with new seals, fitting it into
the cylinder block (see 12B, Turbocharging, Tur-
bocharger oil pipe: Removal - Refitting, page
12B-12) .
aRefit the catalytic converter (see 19B, Exhaust,
Catalytic converter: Removal - Refitting, page
19B-12) .
aConnect:
-the coolant temperature sensor connector,
-the heater matrix cooling hose to the water cham-
ber.
aFit the clip on the heater matrix cooling hose onto
the water chamber using the (Mot. 1202-01) or
(Mot. 1202-02) or (Mot. 1448).
aConnect the coolant pump inlet pipe cooling hose.
aFit the cooling hose clip at the coolant pump inlet
pipe end using the (Mot. 1202-01) or (Mot. 1202-02)
or (Mot. 1448).
aConnect the EGR cooler cooling hose.
aFit the cooling hose clip at the EGR cooler end using
the (Mot. 1202-01) or (Mot. 1202-02) or (Mot.
1448).
aConnect the brake servo pipe onto the vacuum
pump.
aFit the engine wiring.
aClip:
-the breather pipe onto the gearbox,
-the wiring on the engine lifting eye on the gearbox
side.
aRefit the air filter unit (see 12A, Fuel mixture, Air fil-
ter unit: Removal - Refitting, page 12A-13) .
aRemove the blanking plugs from the fuel pipes and
high pressure pump.
aConnect the fuel inlet and return pipes to the high
pressure pump.
aFit the engine wiring.
aConnect:
-the accelerometer connector,
-injector rail pressure sensor connector, WARNING
In order to ensure that the bolts are correctly
tightened, use a syringe to remove any oil which
may be in the cylinder head mounting holes.
19712
11A-122
TOP AND FRONT OF ENGINE
Cylinder head: Removal - Refitting
K4M
11A
CLEANING THE CYLINDER HEAD
a
aUse SUPER CLEANING AGENT FOR JOINT FA-
CES (see Vehicle: Parts and consumables for
the repair) (04B, Consumables - Products) to clean:
-the cylinder head gasket face if being reused,
-the cylinder block gasket face.
aUse SURFACE CLEANER (see Vehicle: Parts
and consumables for the repair) (04B, Consuma-
bles - Products) to degrease:
-the cylinder head gasket face if being reused,
-the cylinder block gasket face.
aCheck for gasket face deformation using a ruler and
a set of shims.
The maximum deformation is 0.05 mm.aStrip the cylinder head (see Cylinder head: Strip-
ping - Rebuilding) (Technical Note 6023A, 10A,
Engine and peripherals).
aTest the cylinder head for possible cracks using the
cylinder head test kit (see Garage Equipment Cat-
alogue).
aRebuild the cylinder head (see Cylinder head:
Stripping - Rebuilding) (Technical Note 6023A,
10A, Engine and peripherals).
aPosition the pistons at mid-stroke.
aCheck that the centring dowel (6) is on the cylinder
block.
aRefit a new cylinder head gasket. IMPORTANT
Wear goggles with side protectors for this opera-
tion.
IMPORTANT
Wear leaktight gloves (Nitrile type) for this opera-
tion.
WARNING
Do not scrape the joint faces of the aluminium,
any damage caused to the joint face will result in
a risk of leaks.
WARNING
The joint faces must be clean, dr y and free from
grease (avoid finger marks).
WARNING
Do not allow this product to drip onto the paint-
work.
Clean the cylinder head carefully to prevent for-
eign bodies from entering the oil supply and
return galleries.
Failure to follow this advice could lead to the
blocking of the various oil inlet galleries, which
would quickly result in engine damage.
WARNING
No regrinding of the cylinder head is permitted.
128611
11A-123
TOP AND FRONT OF ENGINE
Cylinder head: Removal - Refitting
K4M
11A
II - REFITTING OPERATION
aRefit:
-the cylinder head,
-the new cylinder head bolts.
aWithout tightening, fit the cylinder head bolts in or-
der.
aPretighten to torque and in order the cylinder head
bolts (initial torque) (20 N.m).
aCheck that all of the new cylinder head bolts are
tightened to the correct torque (20 N.m).
aAngle tighten in order the cylinder head bolts (240˚
±± ± ±
6˚).III - FINAL OPERATION
aPosition the injector wiring.
aConnect the injector connectors.
aFit the wiring bracket on the water chamber.
aRefit:
-the wiring bracket bolt on the water chamber,
-the bolts of the engine wiring channel.
aClip on the water chamber wiring.
aConnect:
-the coolant temperature sensor connector,
-the heater matrix inlet hose to the water chamber,
-the cooling radiator top hose to the water chamber.
aUsing the (Mot. 1448) or (Mot. 1202-01) or (Mot.
1202-02) fit:
-the cooling radiator top hose clip on the water
chamber,
-the heater matrix inlet hose clip on the water cham-
ber.
aRefit:
-dipstick guide ,
-the dipstick,
-the exhaust manifold (see 12A, Fuel mixture, Ex-
haust manifold: Removal - Refitting, page 12A-
48) .
-the front right-hand wheel driveshaft (see Front
right-hand driveshaft: Removal - Refitting)
(29A, Driveshafts),
-the camshafts (see 11A, Top and front of engine,
Camshaft: Removal - Refitting, page 11A-82) ,
-the rocker cover (see 11A, Top and front of en-
gine, Rocker cover: Removal - Refitting, page
11A-66) ,
-the camshaft seals on the timing end (see 11A,
Top and front of engine, Camshaft seal, timing
end: Removal - Refitting, page 11A-138) ,
-the camshaft dephaser (see 11A, Top and front of
engine, Camshaft dephaser: Removal - Refit-
ting, page 11A-135) ,
-the timing belt (see 11A, Top and front of engine,
Timing belt: Removal - Refitting, page 11A-27) ,
-the crankshaft accessories pulley (see 11A, Top
and front of engine, Crankshaft accessories
pulley: Removal - Refitting, page 11A-20) ,
103259
WARNING
In order to ensure that the bolts are correctly
tightened, use a syringe to remove any oil which
may be in the cylinder head mounting holes.
WARNING
Do not oil the new bolts. Be sure to oil bolts
being reused.
WARNING
Do not retighten the cylinder head bolts after
applying this procedure.