2009 RENAULT TWINGO RS radiator

19A-7
COOLING
Engine cooling system: Operating diagram
D4F, and 780 or 782
19A
122824
(1) Engine
(2) Radiator
(3) Heater matrix
(4) Expansion bottle
(5) Coolant pump
(6) Thermostat
(7) Bleed screws
(8) 10 mm restr iction
(9) Turbocharger
Note:
The rating of the expansion bottle degassing valve
is 1.4 bar.

19A-8
COOLING
Engine cooling system: Operating diagram
K4M
19A
128623
(1) Engine
(2) Cooling radiator
(3) Heater matrix
(4) Expansion bottle
(5) Water pump
(6) Thermostat
(7) Bleed screws
(8) Chok e

19A-9
COOLING
Cooling system: Draining - Refilling
D4F or D7F or K4M or K9K
19A
a
I - DRAINING
aPosition the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
aRemove the expansion bottle cap.aRemove the engine undertray.
aPosition the coolant recovery tray under the vehi-
cle.
aRemove the cooling radiator bottom hose clip using
the tool (Mot. 1202-01) or (Mot. 1202-02) or (Mot.
1448).
aOpen the cooling system by removing the cooling ra-
diator bottom hose using the tool (Car. 1363).
aUse a compressed air nozzle to blow air into the
system through the expansion bottle opening to re-
move as much coolant as possible.
II - CLEANING
aFill the cooling system with water through the expan-
sion bottle.
aLet the water run until the water collected by the
cooling radiator bottom hose becomes clear.
aUse a compressed air nozzle to blow air into the
circuit through the expansion bottle opening to re-
move as much water as possible.
aRefit the hose which was removed.
III - FILLING
a
1 - Filling procedure with the tool (Mot. 1700)
aFill the cooling system with engine coolant recom-
mended by the manufacturer (see Vehicle: Parts
and consumables for the repair) (04B, Consum-
ables - Products) using the tool (Mot. 1700).
For the use of this tool (see Cooling system filling
and diagnostic tool: Use) (NT 3857A, 19A, Cool-
ing). Special tooling required
Mot. 1202-01Clip pliers for hose clips
(large size).
Mot. 1202-02Clip pliers for hose clips
(small size)
Mot. 1448Remote operation pliers for
hose clips .
Car. 1363Set of tr im removal levers.
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
Equipment required
coolant recovery tray
compressed air nozzle
pedal press
IMPORTANT
When working in the engine compartment, take
care as the radiator fan(s) may start up unex-
pectedly (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 dr ain the cooling system,
-do not open the bleed screw(s).
WARNING
Before the operation, protect the electrical acces-
sories to prevent any risk of short circuiting and
protect the belts to avoid damaging them.
K4M
Note:
There are two procedures for filling the cooling
system:
-the method using the (Mot. 1700) tool is recom-
mended by Renault. It saves a considerable
amount of time because it does not require the
cooling system bleed screws to be opened,
-the procedure without a special tool.

19A-12
COOLING
Cooling radiator: Removal - Refitting
D4F or D7F, and AIR CONDITIONING
19A
PARTS AND CONSUMABLES FOR THE
REPAIR WORK
aConsumable : (see Vehicle: Parts and consuma-
bles for the repair)
-COOLANT.
REMOVAL
I - REMOVAL PREPARATION OPERATION
aPosition the vehicle on a two-post lift ( (see Vehicle:
Towing and lifting) ).
aRemove:
-the battery ( (see Battery: Removal - Refitting) ),
-the battery tray ( (see Battery tray: Removal - Re-
fitting) ),
-the front wheels ( (see Wheel: Removal - Refit-
ting) ), (see Front wheel arch liner: Removal -
Refitting)
-the wheel arch liners (see MR 412 Bodywork,
55A, Exterior protection, Wheel arch liners: Re-
moval-Refitting),
-the front bumper ( (see Front bumper: Removal -
Refitting) ).aDisconnect the injection computer connectors.
aRemove:
-the computer mounting bolts (1) ,
-the computer wiring harness clip nut,
-the computer mounting.
aDrain the cooling system (see 19A, Cooling, Cool-
ing system: Draining - Refilling, page 19A-9) .
aRemove the engine cooling fan assembly (see 19A,
Cooling, Engine cooling fan assembly: Removal
- Refitting, page 19A-51) .
II - OPERATION FOR REMOVAL OF PART
CONCERNED
a
aRemove:
-the air deflector on the dehydrator reservoir side,
-the engine cooling system radiator upper right-
hand retaining lug,
-the engine cooling system radiator upper left-hand
retaining lug.
aUsing the (Mot. 1448), remove:
-the engine cooling system radiator degassing
hose,
-the engine cooling system radiator top hose, Special tooling required
Mot. 1448Remote operation pliers for
hose clips .
Equipment required
safety strap(s)
120779
IMPORTANT
Wear protective gloves during the operation.

19A-13
COOLING
Cooling radiator: Removal - Refitting
D4F or D7F, and AIR CONDITIONING
19A
-the engine cooling system radiator bottom hose.
aAttach the condenser to the upper cross member of
the front end panel with a safety strap(s).
aRemove the condenser bolts from the radiator.
aUncouple the condenser from the cooling radiator.
aRemove the radiator mounting cross member ( (see
Radiator mounting cross member: Removal -
Refitting) ).
aWithdraw the air deflectors from the sliding adjust-
ers.
aRemove the engine cooling system radiator.
REFITTING
I - REFITTING OPERATION FOR PART
CONCERNED
aRefit the engine cooling system radiator.
aFit the air deflector to the sliding adjusters.
aRefit the radiator mounting cross member ( (see Ra-
diator mounting cross member: Removal - Refit-
ting) ).
aCouple the condenser to the engine cooling system
radiator.
aDetach the condenser from the front end panel up-
per cross member.
aUsing the (Mot. 1448), refit:
-the engine cooling system radiator degassing
hose,
-the engine cooling system radiator top hose,
-the engine cooling system radiator bottom hose.
aRefit:
-the engine cooling system radiator upper retaining
lug on the dehydrator reservoir side,
-the engine cooling system radiator upper left-hand
retaining lug.
aRefit the air deflector on the dehydrator reservoir
side.
II - FINAL OPERATION
aRefit the engine cooling fan assembly (see 19A,
Cooling, Engine cooling fan assembly: Removal
- Refitting, page 19A-51) .
aRefit:
-the computer mounting.-the computer wiring harness clip nut,
-the computer mounting bolts.
aConnect the injection computer connectors.
aRefit:
-the battery tray ( (see Battery tray: Removal - Re-
fitting) ),
-the battery ( (see Battery: Removal - Refitting) ),
-the front bumper ( (see Front bumper: Removal -
Refitting) ),
-the wheel arch liners (see MR 412 Bodywork,
55A, Exterior protection, Wheel arch liners: Re-
moval-Refitting),
-the front wheels ( (see Wheel: Removal - Refit-
ting) ).
aFill and bleed the cooling system (see 19A, Cool-
ing, Cooling system: Draining - Refilling, page
19A-9) .

19A-14
COOLING
Cooling radiator: Removal - Refitting
K9K
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 ) (80A, Battery).
aDrain the refrigerant circuit using a refrigerant
charging station (see Refrigerant circuit: Drain-
ing - Filling) (62A, Air conditioning).
aRemove:
-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).
aDisconnect the pressostat connector (1) .
aRemove the plastic cover (2) from the condenser.
aUnscrew the condenser connecting pipe unions (3) . Special tooling required
Mot. 1448Remote operation pliers for
hose clips .
Equipment required
refrigerant charging station
safety strap(s)
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 does not operate using pure water.AIR CONDITIONING
K9K, and 718, and AIR CONDITIONING
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19A-15
COOLING
Cooling radiator: Removal - Refitting
K9K
19A
aDisconnect the pressostat connector (4) .
aRemove the plastic cover (5) from the condenser.
aUnscrew the condenser connecting pipe unions (6) .aUncouple the connecting pipes from the condenser.
aDrain the cooling system (see 19A, Cooling, Cool-
ing system: Draining - Refilling, page 19A-9) .
aUse the (Mot. 1448) to disconnect:
-the top hose (7) on the radiator,
-the degassing hose (8) on the radiator. K9K, and 740, and AIR CONDITIONING
121174
121312
WARNING
To prevent moisture from entering the system,
place plugs on the cold loop components which
are open to the air.
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19A-16
COOLING
Cooling radiator: Removal - Refitting
K9K
19A
aUnclip:
-the expansion bottle hose (9) from the engine cool-
ing fan assembly,
-the bottom hose (10) from the engine cooling fan
assembly,
-the wiring (11) from the engine cooling fan assem-
bly.
aDisconnect the engine cooling fan assembly con-
nectors (12) .II - OPERATION FOR REMOVAL OF PART
CONCERNED
aAttach the radiator and the intercooler to the upper
cross member with a safety strap(s).
aRemove:
-the radiator mounting cross member (see Radiator
mounting cross member: Removal - Refitting)
(41A, Front lower structure),
-the « radiator - condenser - engine cooling fan »
assembly using the safety strap(s).
Stripping the cooling radiator
aRemove the plastic covers from the radiator.
aUnclip the engine cooling fan assembly.
REFITTING
I - REFITTING PREPARATION OPERATION
Rebuilding the cooling radiator
aClip the engine cooling fan assembly in place.
aRefit the plastic covers to the radiator.
II - REFITTING OPERATION FOR PART
CONCERNED
aRefit:
-the « radiator - condenser - engine cooling fan »
assembly using a safety strap(s),
-the radiator mounting cross member (see Radiator
mounting cross member: Removal - Refitting)
(41A, Front lower structure).
aRemove the safety strap(s).
III - FINAL OPERATION
aConnect the engine cooling fan assembly connec-
tors.
aClip:
-the wiring to the engine cooling fan assembly,
-the bottom hose to the engine cooling fan assem-
bly,
-the expansion bottle hose to the engine cooling fan
assembly.
aUse the (Mot. 1448) to connect:
-the degassing hose on the radiator,
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