Renault Laguna III Manual page 1485

Thermostat: Removal - Refitting
V9X
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
When carrying 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 criteria 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
Prepare for the flow of fluid, and protect the sur-
rounding components.
REMOVAL
I - REMOVAL PREPARATION OPERATION
a Position the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
a Remove:
- the engine cover,
- the engine undertray bolts,
- 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).
COOLING
a Drain the cooling system (see 19A, Cooling, Cool-
ing system: Draining - Refilling, page 19A-16) .
a Remove the coolant outlet unit (see 19A, Cooling,
Water chamber: Removal - Refitting, page 19A-
100) .
II - OPERATION FOR REMOVAL OF PART
CONCERNED
a Remove:
- the thermostat (1) ,
- the thermostat seal.
REFITTING
I - REFITTING PREPARATION OPERATION
a parts always to be replaced: thermostat seal (10,
06,03,03).
II - REFITTING OPERATION FOR PART
CONCERNED
a Refit:
- a new thermostat seal,
- the thermostat.
III - FINAL OPERATION
a Refit:
- the coolant outlet unit (see 19A, Cooling, Water
19A-97
chamber: Removal - Refitting, page 19A-100) ,
19A
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