Page 225 of 652

11A-108
TOP AND FRONT OF ENGINE
Camshaft: Removal - Refitting
K9K
11A
-the camshaft seal (see 11A, Top and front of en-
gine, Camshaft seal, timing end: Removal - Re-
fitting, page 11A-138) .
REFITTING
I - REFITTING PREPARATION OPERATION
aAlways replace:
-the nut from the camshaft pulley,
-the camshaft seal.
a
aUsing ABRASIVE PADS clean the load-bearing sur-
faces of the camshaft bearings.
aDegrease the load-bearing surfaces of the camshaft
bearings using SURFACE CLEANER (see Vehi-
cle: Parts and consumables for the repair) (04B,
Consumables - Products) and a CLEAN CLOTH.
aApply four beads (1) of RESIN ADHESIVE (see Ve-
hicle: Parts and consumables for the repair)
(04B, Consumables - Products) 7 mm in diameter
on the cylinder head.II - REFITTING OPERATION FOR PART
CONCERNED
aPosition the camshaft by positioning the timing end
camshaft groove vertically.
aRefit the camshaft bearings in accordance with their
original positions (bearing No. 1 engine flywheel
end).
aRefit in order bolts (1) , (3) , (4) and (2) of the cam-
shaft bearings.
aTighten the camshaft bearing bolts (1) , (3) , (4) and
(2) in order.
aRefit the camshaft bearing bolts in order.
aTighten to torque and in order the bolts of the cam-
shaft bearings (10 N.m).
III - FINAL OPERATION
aRefit:
-the camshaft seal (see 11A, Top and front of en-
gine, Camshaft seal, timing end: Removal - Re-
fitting, page 11A-138) ,
-the vacuum pump (see Vacuum pump: Removal
- Refitting) (37A, Mechanical component controls),
-the rocker cover (see 11A, Top and front of en-
gine, Rocker cover: Removal - Refitting, page
11A-66) ,
-the timing belt (see 11A, Top and front of engine,
Timing belt: Removal - Refitting, page 11A-27) ,
-the camshaft position sensor (see 13B, Diesel in-
jection, Camshaft position sensor: Removal -
Refitting, page 13B-14) ,
-the crankshaft accessories pulley (see 11A, Top
and front of engine, Crankshaft accessories
pulley: Removal - Refitting, page 11A-20) , WARNING
The joint faces must be clean, dr y and free from
grease (avoid finger marks).
WARNING
Applying excess sealant could cause it to be
squeezed out when parts are tightened. A mix-
ture of sealant and fluid could damage certain
components (engine, radiator, etc.).
20064-1
113563
Page 237 of 652
11A-120
TOP AND FRONT OF ENGINE
Cylinder head: Removal - Refitting
K4M
11A
-the camshafts (see 11A, Top and front of engine,
Camshaft: Removal - Refitting, page 11A-82) .
aDrain the gearbox (see Manual gearbox oils:
Draining - Filling) (21A, Manual gearbox).
aRemove:
-the front right-hand wheel driveshaft (see Front
right-hand driveshaft: Removal - Refitting)
(29A, Driveshafts),
-the exhaust manifold (see 12A, Fuel mixture, Ex-
haust manifold: Removal - Refitting, page 12A-
48) .
aRemove:
-the dipstick,
-the bolts (1) from the dipstick guide,
-the dipstick guide.aUsing the (Mot. 1448) or (Mot. 1202-01) or (Mot.
1202-02) remove:
-the cooling radiator top hose clip (2) on the water
chamber.
-the heater matrix inlet hose clip (3) on the water
chamber.
aDisconnect:
-the cooling radiator top hose from the water cham-
ber.
-the heater matrix inlet hose of the water chamber,
-the connector (4) from the coolant temperature
sensor.
aUnclip the water chamber wiring.
132368
128616
Page 240 of 652

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.
Page 511 of 652
19A-1
COOLING
Engine cooling system: Specifications
D4F or D7F or K4M or K9K
19A
Vehicles in the current range have cooling systems
with the following basic specifications:
-hermetically-sealed pressurised circuit (with expan-
sion bottle valve),
-circuit using only type « D » fluid,
-passenger compartment heating system equipped
with a « heater matrix » type radiator located under
the dashboard which helps to cool the engine.
Coolant quantities
Special notes:
-protection down to - 25˚C ±± ± ±
2 for cold and temperate
countries,
-protection down to - 40˚C ±± ± ±
2 for "extreme cold" coun-
tries.
Thermostat opening temperaturesEngine Quantity
(litres)Grade
D7F 800 5.5
Only use coolant
GLACEOL RX
(type D) D4F 772 5.5
K9K 740 5.7
D4F 780 5.7
D4F 782 5.7
K4M 854 5.7
Engine Star t o f
opening (˚C)Fully open (˚C)
D7F89 99
D4F89 99 ±± ± ±
2
K9K83 ±± ± ±
395
K4M89 101
Page 512 of 652

19A-2
COOLING
Engine cooling system: Check
19A
Expansion bottle cap valve rating:
I - CHECKING THE COOLING SYSTEM USING THE
TOOL (MOT. 1700)
a1 - Checking the expansion bottle cap valve
aUse the cooling system filling and diagnostic tool
(Mot. 1700). Consult the user's manual for this tool
(see Cooling system filling and diagnostic tool:
Use) (Technical Note 3857A, 19A, Cooling).
2 - Checking the sealing of the cooling circuit
aUse the cooling system filling and diagnostic tool
(Mot. 1700). Consult the user's manual for this tool
(see Cooling system filling and diagnostic tool:
Use) (Technical Note 3857A, 19A, Cooling).
II - CHECKING THE COOLING SYSTEM USING THE
TOOL (MS. 554-07)
a Special tooling required
Mot. 1700Fault finding and filling -
bleeding the cooling circuit.
Ms. 554-07Instr ument for testing the
cooling circuit and the expan-
sion bottle valve. Contains
caps 554-01, 554-04, 554-06
IMPORTANT
When working in the engine compartment, take
care as the radiator fan(s) may start up unexpect-
edly (risk of being cut).
To avoid any risk of serious burns when the engine
is hot:
-do not open the expansion bottle cap,
-do not drain the cooling system,
-do not open the bleed screw(s).
Note:
There are two procedures for checking the cooling
system:
-the procedure using the (Mot. 1700)
-the procedure using the (Ms. 554-07)
Expansion bottle cap with
...Valve rating
... a brown circle1.2 bar
... a yellow marking1.4 bar
... a white marking1.6 bar
... a grey marking1.8 bar
WARNING
If the coolant is leaking from the expansion bottle
cap, replace the valve.
107138
WARNING
If the coolant is leaking from the expansion bottle
cap, replace the valve.
Page 514 of 652
19A-4
COOLING
Engine cooling circuit: List and location of components
K4M
19A
132947
(1) Engine
(2) Cooling radiator
(3) Heater matrix
(4) Expansion bottle
(5) Water pump
(6) Thermostat
(7) Bleed screws
(8) Chok e
Page 515 of 652
19A-5
COOLING
Engine cooling system: Operating diagram
D4F, and 772 – D7F
19A
122038
(1) Engine
(2) Radiator
(3) Heater matrix
(4) Expansion bottle
(5) Water pump
(6) Thermostat
(7) Bleed screws
(8) 10 mm restr iction
Note:
The expansion bottle degassing valve rating is 1.4
bar.
Page 516 of 652
19A-6
COOLING
Engine cooling system: Operating diagram
K9K
19A
The expansion bottle valve rating is 1.4 bar.
121816
(1) Engine
(2) Radiator
(3) Expansion bottle
(4) Heater matrix
(5) Cooled EGR
(6) Water pump
(7) Water chamber with integrated
ther mostat
(8) Bleed screw on the water cham-
ber
(9) Bleed screw on the heater
matr ix hose