2009 RENAULT TWINGO RS engine coolant

19A-45
COOLING
Water chamber: Removal - Refitting
K9K
19A
II - REFITTING OPERATION FOR PART
CONCERNED
aRefit the thermostat to the water chamber.
aRefit:
-a new water chamber seal,
-the water chamber.
aTorque tighten the water chamber bolts (10 N.m).
III - FINAL OPERATION
aConnect the cooling hoses on the water chamber.
aPosition the cooling hose clips on the water chamber
using the tool (Mot. 1448).
aClip on the cooling hose of the coolant-oil heat ex-
changer.
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).
aConnect the brake servo vacuum pipe.
aClip:
-the turbocharging pressure regulator vacuum pipe,
-the vacuum pipe from the brake servo.
aConnect the turbocharging pressure regulator vacu-
um pipe.
aRefit the nuts of the air hoses 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.
aFill the cooling system (see 19A, Cooling, Cooling
system: Draining - Refilling, page 19A-9) .
aRefit the engine cover. K9K, and 718

19A-49
COOLING
Water chamber: Removal - Refitting
K4M
19A
aUsing the (Mot. 1448) or (Mot. 1202-01) or (Mot.
1202-02) remove:
-the cooling radiator top hose clip on the water
chamber,
-the heater matrix hose clip (1) on the water cham-
ber.
aDisconnect from the water chamber:
-the cooling radiator top hose,
-the heater matrix hose.
aRemove:
-the bolt (2) from the heater matrix hose bracket,
-the heater matrix hose bracket,
-the bolts (3) of the engine wiring channel,
-the coolant temperature sensor (see 19A, Cool-
ing, Coolant temperature sensor: Removal - Re-
fitting, page 19A-66) .
aMove aside the engine wiring channel.
aUnclip the wiring at (4) .II - REMOVAL OPERATION
aRemove:
-the coolant outlet unit bolts,
-the water chamber,
-the water chamber seal.
REFITTING
I - REFITTING PREPARATION OPERATION
aparts always to be replaced: Cylinder head cool-
ant outlet unit seal.
aUse SURFACE CLEANER (see Vehicle: Parts
and consumables for the repair) (04B, Consuma-
bles - Products) to clean and degrease:
-the cylinder head joint face,
-the coolant outlet unit housing if it is being reused.
132444
128456
WARNING
The joint faces must be clean, dr y and free from
grease (avoid finger marks).

19A-50
COOLING
Water chamber: Removal - Refitting
K4M
19A
II - REFITTING OPERATION
aRefit the coolant outlet unit with a new seal.
aPretighten in order and to torque the water cham-
ber bolts (initial torque) (4 N.m).
aTorque tighten in order the water chamber bolts
(12 N.m).
III - FINAL OPERATION
aClip the wiring onto the water chamber.
aFit the engine wiring channel.
aRefit:
-the coolant temperature sensor (see 19A, Cool-
ing, Coolant temperature sensor: Removal - Re-
fitting, page 19A-66) ,
-the heater matrix hose bracket.
aTorque tighten the heater matrix hose bracket bolt
(10 N.m).
aConnect to the coolant outlet unit:
-the heater matrix hose,
-the cooling radiator top hose.
aUsing the (Mot. 1448) or (Mot. 1202-01) or (Mot.
1202-02) fit:
-the heater matrix hose clip,
-the cooling radiator top hose clip.
aRefit the air filter unit (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) .
aRefit the engine undertray.
128456

19A-51
COOLING
Engine cooling fan assembly: Removal - Refitting
C44, and K9K
19A
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift ( (see Vehicle:
Towing and lifting) )
aDisconnect the battery ( (see Battery: Removal -
Refitting) ).
aRemove:
-the engine undertray bolts,
-the engine undertray,
-the front bumper ( (see Front bumper: Removal -
Refitting) ),
-the left-hand and right-hand headlights (see Halo-
gen headlight: Removal - Refitting) .
aRemove:
-the cooling radiator retaining lug bolt,
-the expansion bottle bolt onto the front upper cross
member,
-the air filter inlet air pipe bolt on the front upper
cross member.
aUnclip and then remove from the front upper cross
member:
-the air filter inlet air pipe,
-the expansion bottle.
aRemove the bonnet lock nuts.
aRemove the « cable - bonnet catch » assembly.
aRemove the front upper cross member ( (see Front
upper cross member: Removal - Refitting) )
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aDisconnect the electrical connectors on the engine
cooling fan assembly.
aUnclip:
-the engine cooling fan assembly wiring,
-the coolant hose at the bottom of the engine cool-
ing fan assembly.aPress on the engine cooling fan assembly locking
tabs (1) on the cooling radiator.
Note:
Do not unclip the bonnet release cable to avoid
damaging the cable clip on the lock.
AIR CONDITIONING
120324
Note:
Be careful not to press too hard on the tabs to
avoid breaking them.

19A-52
COOLING
Engine cooling fan assembly: Removal - Refitting
C44, and K9K
19A
aPress on the engine cooling fan assembly locking
tabs (2) on the cooling radiator.
aWithdraw the engine cooling fan assembly from the
cooling radiator from above, while pressing on the
locking tabs.
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aFit the engine cooling fan assembly to the cooling ra-
diator.
aClip the engine cooling fan assembly to the cooling
radiator.
aConnect the electrical connectors to the engine cool-
ing fan assembly.aClip:
-the engine cooling fan assembly wiring in place,
-the coolant hose at the bottom of the engine cool-
ing fan assembly.
II - FINAL OPERATION
aRefitting the front upper cross member (see MR 412
Bodywork, 42A, Upper front structure, Cross
member: Removal - Refitting).
aFit the « cable - bonnet catch » assembly.
aRefit the bonnet catch nuts.
aClip and move away from the front upper cross
member:
-the expansion bottle,
-the air filter inlet air pipe.
aRefit:
-the air filter inlet air pipe bolt onto the front upper
cross member,
-the expansion bottle bolt onto the front upper cross
member,
-the cooling radiator retaining lug bolt.
aTighten on the front upper cross member:
-the air filter inlet air pipe bolt onto the front upper
cross member,
-the expansion bottle bolt onto the front upper cross
member,
-the cooling radiator retaining lug bolt.
aRefit:
-the left-hand and right-hand headlights (see 80B,
Headlights, Halogen headlights: Removal - Re-
fitting),
-the front bumper ( (see Front bumper: Removal -
Refitting) ),
-the engine undertray,
-the engine undertray bolts.
aTighten the engine undertray bolts until contact is
made.
aConnect the battery ( (see Battery: Removal - Re-
fitting) ). STANDARD HEATING
120325
Note:
Be careful not to press too hard on the tabs to
avoid breaking them.
Note:
Check that the tabs lock the engine cooling fan
assembly on the cooling radiator correctly.

19A-58
COOLING
Coolant pump inlet pipe: Removal - Refitting
K9K
19A
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (MR 411, 02A, Lifting equip-
ment).
aDisconnect the battery (see ) (MR 411, 80A, Bat-
tery).
aRemove:
-the engine cover,
-the windscreen wiper arms (see Windscreen wip-
er arm: Removal - Refitting) (MR 411, 85A, Wip-
ers - Washers),
-the scuttle panel grille (see Scuttle panel grille:
Removal - Refitting) (MR 412, 56A, Exterior
equipment),
-the scoop under the scuttle panel grille (see Scoop
under the scuttle panel grille: Removal - Refit-
ting) (MR 412, 56A, Exterior equipment),
-the front wheels (see Wheel: Removal - Refitting)
(MR 411, 35A, Wheels and tyres),
-the front wheel arch liners (see Front wheel arch
liner: Removal - Refitting) (MR 412, 55A, Exterior
protection),
-the front bumper (see Front bumper: Removal -
Refitting) (MR 412, 55A, Exterior protection),
-the headlights (see Halogen headlight: Removal
- Refitting) (MR 411, 80B, Headlights),
-the front upper cross member (see Front upper
cross member: Removal - Refitting) (MR 412,
42A, Upper front structure).
aDrain the cooling system (see 19A, Cooling, Cool-
ing system: Draining - Refilling, page 19A-9) .
aRemove the engine tie-bar (see 19D, Engine
mounting, Lower engine tie-bar: Removal - Refit-
ting, page 19D-18) . Special tooling required
Mot. 1672Low er engine support.
Mot. 1448Remote operation pliers for
hose clips .
Tightening torquesm
subfame front bolt62 Nm
subframe rear bolt105 Nm
IMPORTANT
Consult the safety and cleanliness advice and oper-
ation recommendations before carrying out any
repair (see ) .
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
Before the operation, protect the electrical accesso-
ries to prevent any risk of shor t circuiting and pro-
tect the belts to avoid damaging them.
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.
WARNING
The coolant helps to keep the engine running prop-
erly (heat exchange).
The system must not operate using pure water.

19A-59
COOLING
Coolant pump inlet pipe: Removal - Refitting
K9K
19A
aRemove:
-the front bolt (1) from the subframe,
-the rear bolt (2) from the subframe.
aPosition the (Mot. 1672).
aRemove:
-the right-hand suspended engine mounting (see
19D, Engine mounting, Right-hand suspended
engine mounting: Removal - Refitting, page
19D-13) ,
-the accessories belt (see 11A, Top and front of
engine, Accessories belt: Removal - Refitting,
page 11A-3) ,
-the multifunction support (see 10A, Engine and
cylinder block assembly, Multifunction sup-
port: Removal - Refitting, page 10A-63) ,
-the oil cooler (see 10A, Engine and cylinder
block assembly, Oil-coolant heat exchanger:
Removal - Refitting, page 10A-33) .II - OPERATION FOR REMOVAL OF PART
CONCERNED
aRemove:
-the bolt (3) from the coolant pump inlet pipe,
-the coolant pump inlet pipe,
-the coolant pump inlet pipe seal.
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aRefit:
-the new water pump inlet pipe seal,
-the coolant pump inlet pipe,
-the coolant pump inlet pipe bolt.
aConnect the cooling hose using the tool (Mot. 1448).
II - FINAL OPERATION.
aRefit:
-the coolant-oil heat exchanger (see 10A, Engine
and cylinder block assembly, Oil-coolant heat
exchanger: Removal - Refitting, page 10A-33) ,
-the multifunction support (see 10A, Engine and
cylinder block assembly, Multifunction sup-
port: Removal - Refitting, page 10A-63) ,
-the accessories belt (see 11A, Top and front of
engine, Accessories belt: Removal - Refitting,
page 11A-3) ,
120040
121417

19A-60
COOLING
Coolant pump inlet pipe: Removal - Refitting
K9K
19A
-the right-hand suspended engine mounting (see
19D, Engine mounting, Right-hand suspended
engine mounting: Removal - Refitting, page
19D-13) .
aRemove the (Mot. 1672).
aRefit:
-the new subframe front bolt,
-the new subframe rear bolt.
aTorque tighten:
-the subfame front bolt (62 Nm),
-the subframe rear bolt (105 Nm).
aRefit the engine tie-bar (see 19D, Engine mount-
ing, Lower engine tie-bar: Removal - Refitting,
page 19D-18) .
aFill the cooling system (see 19A, Cooling, Cooling
system: Draining - Refilling, page 19A-9) .
aRefit:
-the front upper cross member (see Front upper
cross member: Removal - Refitting) (MR 412,
42A, Upper front structure),
-the headlights (see Halogen headlight: Removal
- Refitting) (MR 411, 80B, Headlights),
-the front bumper (see Front bumper: Removal -
Refitting) (MR 412, 55A, Exterior protection),
-the front wheel arch liners (see Front wheel arch
liner: Removal - Refitting) (MR 412, 55A, Exterior
protection),
-the front wheels (see Wheel: Removal - Refitting)
(MR 411, 35A, Wheels and tyres),
-the scoop under the scuttle panel grille (see Scoop
under the scuttle panel grille: Removal - Refit-
ting) (MR 412, 56A, Exterior equipment),
-the scuttle panel grille (see Scuttle panel grille:
Removal - Refitting) (MR 412, 56A, Exterior
equipment),
-the windscreen wiper arms (see Windscreen wip-
er arm: Removal - Refitting) (MR 411, 85A, Wip-
ers - Washers),
-the engine cover.
aConnect the battery (see ) (MR 411, 80A, Battery).