Page 509 of 652

17B-34
PETROL INJECTION
Injector rail - Injectors: Removal - Refitting
K4M
17B
II - REMOVAL OPERATION
aDisconnect the connector (2) from each injector.
aUnclip the wiring on the injector rail.
aRemove:
-the « injector rail - injector » assembly bolts (3) ,
-the « injector rail - injector » assembly.
aRemove:
-the clip (4) from each injector,
-the injectors (5) from the injector rail.REFITTING
I - REFITTING PREPARATION OPERATION
aparts always to be replaced: injector clip on in-
jector rail.
aAlways replace the injector seals.
aRefit:
-new seals on the injectors,
-the injectors on the injector rail,
-new clips on each injector.
II - REFITTING OPERATION
aRefit the « injector rail - injector » assembly.
aClip the wiring on the injector rail.
aConnect the connector on each injector.
aTorque tighten in order the injector rail bolts (10
N.m).
III - FINAL OPERATION
aRefit the inlet distributor (see 12A, Fuel mixture, In-
let distributor: Removal - Refitting, page 12A-29)
.
aRemove the blanking plugs.
aConnect the fuel supply pipe union on the injector
rail.
132390
128397
132390
Page 520 of 652

19A-10
COOLING
Cooling system: Draining - Refilling
D4F or D7F or K4M or K9K
19A
2 - Filling method without special tools
a
aRemove the air filter unit (see 12A, Fuel mixture,
Air filter unit: Removal - Refitting, page 12A-13) .
aRemove the front engine cover.
aOpen the bleed screws (1) and (2) .
aFill the cooling system with engine coolant recom-
mended by the manufacturer (see Vehicle: Parts
and consumables for the repair) (04B, Consum-
ables - Products) via the expansion bottle until it
overflows.
aClose all the bleed screws as soon as the coolant
starts to flow in a continuous stream.aRefit the air filter unit (see 12A, Fuel mixture, Air fil-
ter unit: Removal - Refitting, page 12A-13) .
aRefit the engine cover.
aPressurise the system using the (Ms. 554-07) to
check that there are no leaks (see 19A, Cooling,
Engine cooling system: Check, page 19A-2) .
aRefit the expansion bottle cap.
aClean any surfaces soiled by the coolant.
IV - BLEEDING
a
aStart the engine.
aMaintain the engine speed at 2500 rpm using the
pedal press for 5 min.
aStabilise the engine speed at 2000 rpm until the fan
assembly has been activated twice.
aMaintain the engine speed at 2500 rpm, using the
pedal press for 5 minutes.
aStabilise the engine speed at 2000 rpm until the fan
assembly is activated.
aNote the coolant level in the expansion bottle after
this first activation.
aAccelerate at a minimum of 4000 rpm for several
seconds, until the level of coolant fluid in the expan-
sion bottle drops. WARNING
It is essential to open all of the bleed screws to
remove as much as air as possible in the cooling
system. Failure to perform this procedure may
prevent the cooling system from filling properly
and may damage the engine.
D4F, and 772 – K4M
K9K
120526
D4F, and 772 – K4M
K9K
WARNING
Do not open the bleed screw whilst the engine is
running; this would damage the engine.
D4F, and 772 – D7F, and 800
D4F, and 780 or 782
Page 540 of 652

19A-30
COOLING
Coolant pump: Removal - Refitting
K4M
19A
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
aDrain the cooling system (see 19A, Cooling, Cool-
ing system: Draining - Refilling, page 19A-9) .
aDisconnect the battery (see Battery: Removal - Re-
fitting) (80A, Battery).aRemove:
-the engine undertray,
-the front right-hand wheel (see Wheel: Removal -
Refitting) (35A, Wheels and tyres),
-the front right-hand wheel arch liner (see Front
wheel arch liner: Removal - Refitting) (55A, Ex-
terior protection),
-the front bumper (see Front bumper: Removal -
Refitting) (55A, Exterior protection),
-the headlights (see Halogen headlight: Removal
- Refitting) (80B, Headlights),
-the bonnet catch (see Bonnet lock: Removal -
Refitting) (52A, Non-side opening element mecha-
nisms),
-the front upper cross member (see Front upper
cross member: Removal - Refitting) (42A, Upper
front structure),
-the accessories belt (see 11A, Top and front of
engine, Accessories belt: Removal - Refitting,
page 11A-3) ,
-the air filter unit (see 12A, Fuel mixture, Air filter
unit: Removal - Refitting, page 12A-13) ,
-the throttle valve (see 12A, Fuel mixture, Throttle
valve: Removal - Refitting, page 12A-20) ,
-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 right-hand suspended engine mounting (see
19D, Engine mounting, Right-hand suspended
engine mounting: Removal - Refitting, page
19D-13) ,
-the crankshaft accessories pulley (see 11A, Top
and front of engine, Crankshaft accessories
pulley: Removal - Refitting, page 11A-20) ,
-the timing belt (see 11A, Top and front of engine,
Timing belt: Removal - Refitting, page 11A-27) ,
-the camshaft dephaser (see 11A, Top and front of
engine, Camshaft dephaser: Removal - Refit-
ting, page 11A-135) . Tightening torquesm
bolt 1 of the coolant
pump27 N.m
bolts 2 to 8 of the water
pump10 N.m
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).
WARNING
Prepare for the flow of fluid, and protect the sur-
rounding components.
WARNING
When carr ying out a repair that requires a complete
change, it is essential to flush the circuit with clean
water, blast compressed air through the circuit to
drive out the water, fill and bleed the circuit and
then measure the effective protection.
The cr iteria to be met are:
-protection down to -25˚C ±± ± ±
2 for cold and temper-
ate countries,
-protection down to -40˚C ±± ± ±
2 for "extreme cold"
countries.
Page 543 of 652

19A-33
COOLING
Coolant pump: Removal - Refitting
K4M
19A
-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),
-the bonnet catch (see Bonnet lock: Removal -
Refitting) (52A, Non-side opening element mecha-
nisms),
-the headlights (see Halogen headlight: Removal
- Refitting) (80B, Headlights),
-the front bumper (see Front bumper: Removal -
Refitting) (55A, Exterior protection),
-the front right-hand wheel arch liner (see Front
wheel arch liner: Removal - Refitting) (55A, Ex-
terior protection),
-the front right-hand wheel (see Wheel: Removal -
Refitting) (35A, Wheels and tyres).
aConnect the battery (see Battery: Removal - Refit-
ting) (80A, Battery).
aFill and bleed the cooling system (see 19A, Cool-
ing, Cooling system: Draining - Refilling, page
19A-9) .
aRefit the engine undertray.
Page 544 of 652

19A-34
COOLING
Thermostat: Removal - Refitting
D4F, and 772 – D7F
19A
PARTS AND CONSUMABLES FOR THE
REPAIR WORK
aParts always to be replaced :
-water chamber seal.
aConsumable (see 04B, Parts and consumables
for the repair):
-COOLANT.
REMOVAL
I - REMOVAL PREPARATION OPERATION
aRemove the air filter unit (see 12A, Fuel mixture,
Air filter unit: Removal - Refitting, page 12A-13) .
aRemove the air filter box inlet pipe .
aDrain the cooling system (see 19A, Cooling, Cool-
ing system: Draining - Refilling, page 19A-9) .
aClean the cooling system if necessary (see 19A,
Cooling, Cooling system: Draining - Refilling,
page 19A-9) .
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aSeparate the clips on the water chamber top hose
and the heater matrix hose on the water chamber
using the tool (Mot. 1448).
aDisconnect the water chamber top hose and the
heater matrix hose on the water chamber.aRemove:
-the water chamber bolts (1) ,
-the cylinder head water chamber.
REFITTING
I - REFITTING PREPARATION OPERATION
a
aIt is imperative to replace the cylinder head water
chamber seal.
II - REFITTING OPERATION FOR PART
CONCERNED
aRefit:
-the cylinder head water chamber,
-the cylinder head water chamber bolts.
aConnect the water chamber top hose and the heater
matrix hose on the water chamber.
aFit the clips of the water chamber top hose and the
heater matrix hose on the water chamber using the
tool (Mot. 1448). Special tooling required
Mot. 1448Remote operation pliers for
hose clips .
D4F
D7F
113372
WARNING
The joint faces must be clean, dr y and free from
grease (avoid finger marks).
Page 545 of 652
19A-35
COOLING
Thermostat: Removal - Refitting
D4F, and 772 – D7F
19A
III - FINAL OPERATION
aRefit the air filter unit (see 12A, Fuel mixture, Air fil-
ter unit: Removal - Refitting, page 12A-13) .
aRefit the air filter unit air inlet pipe.
aBleed the cooling system (see 19A, Cooling, Cool-
ing system: Draining - Refilling, page 19A-9) .
aFill the cooling system (see 19A, Cooling, Cooling
system: Draining - Refilling, page 19A-9) . D4F
D7F
Page 550 of 652

19A-40
COOLING
Water chamber: Removal - Refitting
D4F, and 772 – D7F
19A
PARTS AND CONSUMABLES FOR THE
REPAIR WORK
aPart always to be replaced:
-water chamber seal.
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift ( (see Vehicle:
Towing and lifting) ).
aRemove the air filter box (see 12A, Fuel mixture,
Air filter unit: Removal - Refitting, page 12A-13) .
aDrain the cooling system (see 19A, Cooling, Cool-
ing system: Draining - Refilling, page 19A-9) .
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aMove the water chamber hose clips to one side us-
ing the (Mot. 1448) or (Mot. 1202-01) or (Mot. 1202-
02).
aDisconnect the water chamber hoses.aRemove:
-the water chamber bolts (1) ,
-the water chamber.
REFITTING
I - REFITTING PREPARATIONS OPERATION
aClean the gasket faces.
II - REFITTING OPERATION FOR PART
CONCERNED
aRefit:
-the water chamber with a new seal,
-the water chamber bolts.
aTorque tighten the water chamber bolts (10 Nm).
aConnect the water chamber hoses.
aFit the water chamber hose clips using the (Mot.
1448) or (Mot. 1202-01) or (Mot. 1202-02). Special tooling required
Mot. 1448Remote operation pliers for
hose clips .
Mot. 1202-01Clip pliers for hose clips
(large size).
Mot. 1202-02Clip pliers for hose clips
(small size)
Tightening torquesm
water chamber bolts10 Nm
D4F
113372
WARNING
The joint faces must be clean, dr y and free from
grease (avoid finger marks).
Page 551 of 652
19A-41
COOLING
Water chamber: Removal - Refitting
D4F, and 772 – D7F
19A
III - FINAL OPERATION.
aRefit the air filter box (see 12A, Fuel mixture, Air fil-
ter unit: Removal - Refitting, page 12A-13) .
aFill and bleed the cooling system (see 19A, Cool-
ing, Cooling system: Draining - Refilling, page
19A-9) . D4F