Renault Laguna III Manual page 1423

Cooling radiator: Removal - Refitting
K4M or M4R
Special tooling required
Mot. 1448 Remote operation pliers for
hose clips.
Equipment required
refrigerant charging station
Tightening torquesm
b o l t o n t h e
« compressor - con-
d e n s e r c o n n e c t i n g
pipe »
bolt on the « expansion
valve - condenser »
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
Prepare for the flow of fluid, and protect the sur-
rounding components.
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 very cold coun-
tries.
COOLING
REMOVAL
I - REMOVAL PREPARATION OPERATION
a Position the vehicle on a two-post lift (see Vehicle:
Towing and lifting) (02A, Lifting equipment).
a Disconnect the battery (see Battery: Removal - Re-
fitting) (80A, Battery).
M4R
a Remove the front engine cover.
8 N.m
a Remove:
connecting
- the expansion bottle cap,
pipe8 N.m
- the engine undertray bolts,
- the engine undertray,
- the front wheels (see Wheel: Removal - Refitting)
- the front wheel arch liners (see Front wheel arch
- the front bumper (see Front bumper: Removal -
- the headlights (see Headlight: Removal - Refit-
- the cooling radiator upper cover,
- the front end panel (see Front end panel: Remov-
a Drain:
- the cooling circuit using a refrigerant charging
- the refrigerant circuit (see Refrigerant circuit:
19A-35
(35A, Wheels and tyres),
liner: Removal - Refitting) (55A, Exterior protec-
tion),
Refitting) (55A, Exterior protection),
ting) (80B, Headlights),
al - Refitting) (42A, Upper front structure).
station (see 1 9 A , Cooling, Cooling system:
Draining - Refilling, page 19A-16) ,
Draining - Filling) (62A, Air conditioning).
19A