2009 RENAULT TWINGO RS radiator

19A-54
COOLING
Engine cooling fan assembly: Removal - Refitting
D4F, and 780 or 782
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 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).
aDisconnect the air filter unit air inlet pipe (1) from the
air filter unit cover.
aRemove:
-the air filter unit air inlet pipe bolt (2) from the cross
member,
-the air filter unit air inlet pipe.
aDrain the cooling system (see 19A, Cooling, Cool-
ing system: Draining - Refilling, page 19A-9) .aRemove using the (Mot. 1448) :
-the radiator top hose clip,
-the radiator degassing hose clip.
aDisconnect:
-the radiator top hose,
-the radiator degassing hose.
aUnclip:
-the lower hose from the engine cooling fan assem-
bly,
-the wiring harness from the engine cooling fan as-
sembly.
aDisconnect the engine cooling fan assembly con-
nectors.
II - REMOVAL OPERATION FOR PART
CONCERNED
a
aRemove:
-the radiator mounting cross member (see Radiator
mounting cross member: Removal - Refitting)
(MR 412, 41A, Front lower structure),
-the « radiator / engine cooling fan assembly » unit. Special tooling required
Mot. 1448Remote operation pliers for
hose clips .
122833
Note:
Hold the radiator during the removal of the radia-
tor lo wer cross member.

19A-55
COOLING
Engine cooling fan assembly: Removal - Refitting
D4F, and 780 or 782
19A
aRemove the tabs (3) .
aRemove the engine cooling fan assembly.
REFITTING
I - REFITTING PREPARATIONS OPERATION
Rebuilding the cooling radiator
aRefit the engine cooling fan assembly.
aClip on the engine cooling fan assembly tabs.
II - REFITTING OPERATION FOR PART
CONCERNED
aRefit:
-the « radiator / engine cooling fan assembly » unit,
-the radiator mounting cross member (see Radiator
mounting cross member: Removal - Refitting)
(MR 412, 41A, Front lower structure).
III - FINAL OPERATION
aConnect the engine cooling fan assembly connec-
tors.
aClip:
-the wiring harness to the engine cooling fan as-
sembly,
-the bottom hose to the engine cooling fan assem-
bly.aConnect:
-the radiator degassing hose,
-the radiator top hose.
aUsing the (Mot. 1448), fit:
-the radiator degassing hose clip,
-the radiator top hose clip.
aRefit:
-the air filter box air inlet pipe,
-the air filter unit air inlet pipe bolt on the cross
member.
aConnect the air filter unit air inlet pipe to the air filter
unit cover.
aRefit:
-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).
aConnect the battery (see ) (MR 411, 80A, Battery).
aFill and bleed the cooling system (see 19A, Cool-
ing, Cooling system: Draining - Refilling, page
19A-9) .
121770

19A-56
COOLING
Engine cooling fan assembly: 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).
aDisconnect the battery (see Battery: Removal - Re-
fitting) (80A, Battery).
aRemove:
-the engine undertray,
-the front wheels (see Wheel: Removal - Refitting)
(35A, Wheels and tyres),
-the front wheel arch liners (see Front wheel arch
liner: Removal - Refitting) (55A, Exterior protec-
tion),
-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).
aRemove the air inlet pipe scoop (1) .II - REMOVAL OPERATION
aDisconnect:
-the engine cooling fan assembly resistor connector
(2) ,
-the engine cooling fan assembly connector (3) .
aUnclip:
-the engine cooling fan assembly wiring at (4) ,
-the cooling radiator top and bottom hose from the
engine cooling fan assembly.
aUnclip the engine cooling fan assembly from the ra-
diator at (5) by pushing it upwards to detach the
brackets holding it.
aRemove the engine cooling fan assembly upwards.
REFITTING
I - REFITTING OPERATION
aFit the engine cooling fan assembly:
aClip the engine cooling fan assembly to the cooling
radiator.
aClip:
-the cooling radiator top and bottom hose on the en-
gine cooling fan assembly,
-the engine cooling fan assembly wiring.
aConnect:
-the engine cooling fan assembly connector,
145934
132336

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-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-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.
131762