2009 RENAULT TWINGO RS coolant temperature

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.
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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.
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19A-66
COOLING
Coolant temperature sensor: Removal - Refitting
D4F or D7F
19A
PARTS AND CONSUMABLES FOR THE
REPAIR WORK
aParts always to be replaced :
-coolant temperature sensor seal.
aConsumable (see Vehicle: Parts and consuma-
bles 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) .
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aDisconnect the coolant temperature sensor connec-
tor (1) .
aRemove the coolant temperature sensor.
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aRefit:
-the new coolant temperature sensor seal,
-the coolant temperature sensor.
aTighten the coolant temperature sensor.
aConnect the coolant temperature sensor connector.
II - FINAL OPERATION
aRefit the air filter unit (see 12A, Fuel mixture, Air fil-
ter unit: Removal - Refitting, page 12A-13) .
aTop up the coolant fluid level.
aBleed the cooling system (see 19A, Cooling, Cool-
ing system: Draining - Refilling, page 19A-9) . D4F
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D4F

19A-67
COOLING
Coolant temperature sensor: 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).
aRemove the front engine cover.
aUnclip the neck on the gearbox.
II - OPERATION FOR REMOVAL OF PART
CONCERNED
aDisconnect the coolant temperature sensor connec-
tor.
aRemove:
-the coolant temperature sensor clip,
-the coolant temperature sensor,
-the coolant temperature sensor seal.
REFITTING
I - REFITTING PREPARATIONS OPERATION
a
II - REFITTING OPERATION FOR PART
CONCERNED
aRefit:
-the new seal on the coolant temperature sensor,
-the coolant temperature sensor,
-the coolant temperature sensor clip.
aConnect the coolant temperature sensor connector.
III - FINAL OPERATION.
aClip the channel to the gearbox.
aFill the cooling system (see 19A, Cooling, Cooling
system: Draining - Refilling, page 19A-9) .
aRefit the engine cover. 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
The coolant helps to keep the engine running prop-
erly (heat exchange).
The system does not operate using pure water.
WARNING
The seals m ust always be replaced.

19A-68
COOLING
Coolant temperature sensor: Removal - Refitting
D4F, and 780
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).Tightening torquesm
coolant temperature
sensor23 Nm

19A-69
COOLING
Coolant temperature sensor: Removal - Refitting
D4F, and 780
19A
a
Remove the turbocharger air outlet pipe bolt (3) from
the throttle valve.
aDetach the turbocharger air outlet pipe from the tur-
bocharger in the direction of the arrow (4) .aDisconnect the turbocharger air outlet pipe from the
turbocharger.
aRemove the throttle valve (see 12A, Fuel mixture,
Throttle valve: Removal - Refitting, page 12A-20)
.
aDrain the cooling system (see 19A, Cooling, Cool-
ing system: Draining - Refilling, page 19A-9) .
II - REMOVAL OPERATION FOR PART
CONCERNED
aDisconnect the coolant temperature sensor connec-
tor (6) .
aRemove the coolant temperature sensor.
REFITTING
I - REFITTING PREPARATIONS OPERATION
aAlways replace the coolant temperature sensor O-
ring.
II - REFITTING OPERATION FOR PART
CONCERNED
aRefit:
-the new coolant temperature sensor O-ring,
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Note:
If the tightening clip (1) is removed from the tur-
bocharger air outlet pipe, the flexible rubber pipe
(2) and tightening clip (1) must be replaced.
Note:
If the clip (5) is removed from the heat resistant
protector, the latter must be replaced.
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19A-70
COOLING
Coolant temperature sensor: Removal - Refitting
D4F, and 780
19A
-the coolant temperature sensor.
aTorque tighten the coolant temperature sensor
(23 Nm).
aConnect the coolant temperature sensor connector.
III - FINAL OPERATION
aRefit the throttle valve (see 12A, Fuel mixture,
Throttle valve: Removal - Refitting, page 12A-20)
.
aPush the turbocharger air outlet pipe clip in the di-
rection of the arrow (7) .
aConnect the turbocharger air outlet pipe onto the tur-
bocharger.
aRefit the turbocharger air outlet pipe bolt on the
throttle valve.
aFill and bleed the cooling system (see 19A, Cool-
ing, Cooling system: Draining - Refilling, page
19A-9) .
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19A-71
COOLING
Coolant temperature sensor: Removal - Refitting
K4M
19A
REMOVAL
I - REMOVAL PREPARATION OPERATION
aRemove the air filter unit (see 12A, Fuel mixture,
Air filter unit: Removal - Refitting, page 12A-13) .II - REMOVAL OPERATION
aDisconnect the coolant temperature sensor connec-
tor (1) .
aRemove:
-the coolant temperature sensor clip (2) ,
-the coolant temperature sensor,
-the coolant temperature sensor seal.
REFITTING
I - REFITTING PREPARATION OPERATION
aparts always to be replaced: coolant tempera-
ture sensor seal.
aUse SURFACE CLEANER (see Vehicle: Parts
and consumables for the repair) (04B, Consuma-
bles - Products) to clean and degrease:
-the seal housing in the water chamber,
-the seal mating face of the coolant temperature
sensor if reused.
II - REFITTING OPERATION
aRefit:
-the coolant temperature sensor fitted with a new
seal,
-the coolant temperature sensor clip.
aConnect the coolant temperature sensor connector. IMPORTANT
The circuits are designed to be pressurised, so be
careful at high temperatures (risk of serious burns).
Do not remove the cap from the expansion bottle
while the engine is hot.
Take care when carrying out a repair under the bon-
net, as the radiator fan(s) may start to operate with-
out warning.
Do not open the bleed screw(s) with the engine run-
ning.
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
The coolant helps to keep the engine running prop-
erly (heat exchange).
The system does not operate using pure water.
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