engine RENAULT TWINGO RS 2009 2.G Engine And Peripherals Workshop Manual

19A-2
COOLING
Engine cooling system: Check
19A
Expansion bottle cap valve rating:
I - CHECKING THE COOLING SYSTEM USING THE
TOOL (MOT. 1700)
a1 - Checking the expansion bottle cap valve
aUse the cooling system filling and diagnostic tool
(Mot. 1700). Consult the user's manual for this tool
(see Cooling system filling and diagnostic tool:
Use) (Technical Note 3857A, 19A, Cooling).
2 - Checking the sealing of the cooling circuit
aUse the cooling system filling and diagnostic tool
(Mot. 1700). Consult the user's manual for this tool
(see Cooling system filling and diagnostic tool:
Use) (Technical Note 3857A, 19A, Cooling).
II - CHECKING THE COOLING SYSTEM USING THE
TOOL (MS. 554-07)
a Special tooling required
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
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).
Note:
There are two procedures for checking the cooling
system:
-the procedure using the (Mot. 1700)
-the procedure using the (Ms. 554-07)
Expansion bottle cap with
...Valve rating
... a brown circle1.2 bar
... a yellow marking1.4 bar
... a white marking1.6 bar
... a grey marking1.8 bar
WARNING
If the coolant is leaking from the expansion bottle
cap, replace the valve.
107138
WARNING
If the coolant is leaking from the expansion bottle
cap, replace the valve.

19A-3
COOLING
Engine cooling system: Check
19A
1 - Checking the expansion bottle cap valve
aFit onto the tester (Ms. 554-07), the adapter (Ms.
554-06).
aFit the expansion bottle cap to the adapter (Ms. 554-
06).
aPump with the (Ms. 554-07), the pressure should
stabilise at the expansion bottle cap valve rating with
a test tolerance of ± 0.1 bar.
2 - Checking the sealing of the cooling circuit
aReplace the expansion bottle cap with the adapter
(Ms. 554-01).
aConnect on the adapter (Ms. 554-01) the tool (Ms.
554-07).
aPump with the (Ms. 554-07) to put the cooling circuit
under pressure.
aStop pumping at 0.1 bar below the valve rating for
the expansion bottle cap valve.aGradually unscrew the union of the (Ms. 554-07) to
decompress the cooling system then remove the
adapter (Ms. 554-01) and refit the expansion bottle
cap.
97871
Note:
The pressure should not drop; if it does, look for
the leak.
Note:
The pressure should not drop; if it does, look for
the leak.

19A-4
COOLING
Engine cooling circuit: List and location of components
K4M
19A
132947
(1) Engine
(2) Cooling radiator
(3) Heater matrix
(4) Expansion bottle
(5) Water pump
(6) Thermostat
(7) Bleed screws
(8) Chok e

19A-5
COOLING
Engine cooling system: Operating diagram
D4F, and 772 – D7F
19A
122038
(1) Engine
(2) Radiator
(3) Heater matrix
(4) Expansion bottle
(5) Water pump
(6) Thermostat
(7) Bleed screws
(8) 10 mm restr iction
Note:
The expansion bottle degassing valve rating is 1.4
bar.

19A-6
COOLING
Engine cooling system: Operating diagram
K9K
19A
The expansion bottle valve rating is 1.4 bar.
121816
(1) Engine
(2) Radiator
(3) Expansion bottle
(4) Heater matrix
(5) Cooled EGR
(6) Water pump
(7) Water chamber with integrated
ther mostat
(8) Bleed screw on the water cham-
ber
(9) Bleed screw on the heater
matr ix hose

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-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

19A-11
COOLING
Cooling system: Draining - Refilling
D4F or D7F or K4M or K9K
19A
aMaintain the engine speed at 1500 rpm, sharply
varying the engine speed (up to the maximum) 2 to
3 times approximately every 2 minutes until the fan
assembly starts for the second time.
aMaintain the engine speed at 3000 rpm using a ped-
al press, until the fan assembly has been activated
for a third time.
aCheck that the heating is operating correctly.
aAllow the engine to cool until the engine coolant tem-
perature is less than 50˚C.
aRemove the expansion bottle cap.
aAdjust the coolant fluid level to the "Max" mark.
aRefit the expansion bottle cap.
V - FINAL OPERATION
aRemove the coolant recovery tray.
aRefit the engine undertray. K9K
K4M
K4M