Renault Laguna III Manual page 1149

Rail pressure sensor: Removal - Refitting
V9X
Equipment required
Diagnostic tool
Tightening torquesm
rail pressure sensor
IMPORTANT
To avoid all risk of damage to the systems, apply
the safety and cleanliness instructions and opera-
tion recommendations before carrying out any
repair (see 13B, Diesel injection, Diesel injec-
tion: Precautions for the repair, page 13B-1) .
IMPORTANT
Use the diagnostic tool before any operation is car-
ried out on the injection circuit to check:
- that the rail is not under pressure,
- that the fuel temperature is not too high.
Working on the circuit with the engine running is
strictly forbidden.
IMPORTANT
Wear leaktight gloves (Nitrile type) for this opera-
tion.
IMPORTANT
Be careful when removing the injectors or the injec-
tion rail as there will be a quantity of fuel in the rail
and the union.
WARNING
To avoid any corrosion or damage, protect the
areas on which fuel is likely to run.
WARNING
To prevent impurities from entering the circuit, place
protective plugs on all fuel circuit components
exposed to the open air.
DIESEL INJECTION
80 N.m
13B-210
WARNING
Once the warranty period for the injector rail has
expired, only the pressure sensor can be replaced.
During the injector rail warranty period, the injector
rail should be completely replaced if the pressure
sensor fails.
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).
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),
- the injector rail protector on the front row (see 13B,
Diesel injection, Injector rail protector: Remov-
al - Refitting, page 13B-126) ,
- the high pressure pipes between the rail and injec-
tor of the back row (see 13B, Diesel injection,
High pressure pipe between rail and injector:
Removal - Refitting, page 13B-161) .
a Drain the cooling system (see 19A, Cooling, Cool-
ing system: Draining - Refilling, page 19A-16) .
a Remove:
- the high pressure pipe between the rails (see 13B,
Diesel injection, High pressure pipe between
rails: Removal - Refitting, page 13B-184) ,
- the exhaust gas recirculation rigid pipe (see 14A,
Antipollution, Exhaust gas recirculation rigid
pipe: Removal - Refitting, page 14A-62) ,
- the damper valve (see 12A, Fuel mixture, Damp-
er valve: Removal - Refitting, page 12A-39) ,
13B