1995 RENAULT MEGANE SCENIC cooling

COOLING
Checking
2 - Checking the rating of the expansion bottle
cap
If fluid passes through the expansion bottle cap
valve, the cap must be replaced.
On the pump M.S. 554-07 fit tool M.S. 554-06 and
fit this to the valve to be checked.
Increase the pressure which should stabilise at the
calibration value for the cap valve, with a test to-
lerance of
± 0.1 bar.
Valve rating value:
19
1 - Checking the cooling circuit sealing
Replace the expansion bottle cap with tool
M.S.
554-01.
To this, connect tool M.S. 554-07.
Let the engine warm up then turn the ignition off.
Pump to put the circuit under pressure.
Stop pumping at 0.1 bar less than the rating value
of the expansion bottle cap.
The pressure should not drop. If it does, look for
the leak.
Slowly unscrew the union of tool M.S. 554-07 to
decompress the cooling circuit, then remove tool
M.S. 554-01 and refit the expansion bottle cap fit-
ted with a new seal.
SPECIAL TOOLING REQUIRED
M.S.554-07 Kit for checking cooling circuit sealing
M.S.554-01 Adaptor for M.S. 554-05
M.S.554-06 Adaptor for M.S. 554-05
97871R
Engine Valve colour Rating (in bar)
F8Q - E7JBrown 1.2
K7M - F3RBlue 1.6
19-3

COOLING
Radiator
- the two indicators,
- the mounting bolts from the radiator half
grilles and unclip them at (B).
19
REMOVAL
Put the vehicle on a 2 post lift.
Disconnect:
- the battery,
- the connectors for the fan, the relays and the
thermistor.
Remove the engine undertray.
Drain the cooling circuit from the lower radiator
hose (radiator end).
Remove:
- the two bolts (A) from the radiator mounting
brackets on the upper cross member,
98836-1R
- the bolts and nut from the dehydrating bottle,
99177R
98836R3
F8Q ENGINE / AC
19-4

COOLING
Radiator
Unclip the power assisted steering reservoir.
Remove:
- the 4 mounting bolts from the fan mounting
on the radiator and remove it,
- the 4 mounting bolts for the condenser on the
radiator,
19
Unclip the grille at (D) using a screwdriver and re-
lease the sides by lifting the tabs at (E).
99187R1
Remove the 6 mounting bolts for the upper cross
member and remove it.
98838R
99611R
- the radiator.
REFITTING
Refitting is the reverse of removal.
Fill and bleed the cooling circuit.
Disconnect the upper radiator hose by removing
the air filter inlet sleeve.
F8Q ENGINE / AC
19-5

COOLING
Diagram
19
1 Engine
2 Radiator
3 Expansion bottle with degassing after ther-
mostat
4 Heater matrix
5 Thermostat mounting
6 Oil temperature exchanger
7 3 mm diameter restriction
8 6 mm diameter restrictionWater pump
Thermostat
Bleed valve
Temperature switch
The rating of the expansion bottle cap is 1.2 bar
(brown).
99417R
F8Q ENGINE
19-6

COOLING
Diagram
19
1 Engine
2 Radiator
3 Expansion bottle with degassing after ther-
mostat
4 Heater matrix
5 Thermostat mounting
6 3 mm diameter restriction
7 6 mm diameter restrictionWater pump
Thermostat
Bleed valve
Temperature switch
The rating of the expansion bottle cap is 1.2 bar
(brown).
99416R
F8Q ENGINE / AC
19-7

COOLING
Diagram
19
1 Engine
2 Radiator
3 Expansion bottle with degassing after ther-
mostat
4 Heater matrix
5 Thermostat mounting
6 Throttle body
7 3 mm diameter restriction
8 8 mm diameter restrictionWater pump
Thermostat
Bleed valve
Temperature switch
The rating of the expansion bottle cap is 1.6 bar
(blue).
99415R
F3R ENGINE
19-8

COOLING
Diagram
19
1 Engine
2 Radiator
3 Expansion bottle with degassing after ther-
mostat
4 Heater matrix
5 Thermostat mounting
6 Inlet manifold
7 10 mm diameter restriction
8 3 mm diameter restrictionWater pump
Thermostat
Bleed valve
Temperature switch
The rating of the expansion bottle cap is 1.2 bar
(brown).
99414R
E7J ENGINE
19-9

COOLING
Diagram
19
1 Engine
2 Radiator
3 Expansion bottle with degassing after ther-
mostat
4 Heater matrix
5 Thermostat mounting
6 3 mm diameter restrictionWater pump
Thermostat
Bleed valve
Temperature switch
The rating of the expansion bottle cap is 1.6 bar
(blue).
99413R
K7M ENGINE
19-10