Renault Laguna III, Manual

Page: 614 / 3699

11A
-
236
TOP AND FRONT OF ENGINE
Cylinder head: Removal - Refitting
K9K, and 782
11A
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
Drain the cooling system (see 19A , Cooling , Cool-
ing system: Draining - Refilling , page 19A-16 ) .
a
Remove:
- the front right-hand wheel (see Wheel: Removal -
Refitting ) (35A, Wheels and tyres),
- the front right-hand wheel arch liner (see Front
wheel arch liner: Removal - Refitting ) (55A, Ex-
terior protection),
- the accessories belt (see 11A , Top and front of
engine , Accessories belt: Removal - Refitting ,
page 11A-13 ) ,
- the engine undertray,
- the crankshaft accessories pulley (see 11A , Top
and front of engine , Crankshaft accessories
pulley: Removal - Refitting , page 11A-33 ) ,
- the right-hand suspended engine mounting (see
19D , Engine mounting , Right-hand suspended
engine mounting: Removal - Refitting , page
19D-51 ) ,
- the timing belt (see 11A , Top and front of engine ,
Timing belt: Removal - Refitting , page 11A-50 ) ,
- the exhaust gas pressure sensor (see 19B , Ex-
haust , Exhaust gas pressure sensor: Removal -
Refitting , page 19B-93 ) ,
- the exhaust fuel injector cooler (see 19B , Exhaust ,
Exhaust fuel injector cooler: Removal - Refit-
ting
, page 19B-125 ) ,
- the exhaust gases duct at the turbocharger outlet
(see Turbocharger outlet exhaust gas duct: Re-
moval - Refitting ) ,
- 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 ) ,
- the rocker cover (see 11A , Top and front of en-
gine , Rocker cover: Removal - Refitting , page
11A-139 ) ,
- the turbocharger oil return pipe (see 12B , Turbo-
charging , Turbocharger oil pipe: Removal - Re-
fitting , page 12B-35 ) ,
Special tooling required
Mot. 1448 Remote operation pliers for
hose clips.
Mot. 1430 Set of 5 crankshaft and cam-
shaft pulley timing pins.
Equipment required
cylinder head rule
set of feeler gauges
Tightening torques
m
cylinder head bolts (ini-
tial torque) 20 N.m
cylinder head bolts 25 N.m
cylinder head bolts 270˚
± ±
± ± 10˚
alternator bolts 25 N.m
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 1 3 B , Diesel injection , Diesel injection:
Precautions for the repair , page 13B-1 ) ,
- (see Vehicle: Precautions for the repair ) (01D,
Mechanical introduction).
IMPORTANT
Wear leaktight gloves (Nitrile type) for this opera-
tion.
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.