Renault Laguna III Manual page 620

TOP AND FRONT OF ENGINE
Cylinder head: Removal - Refitting
K9K, and 782
a Use a SURFACE CLEANER (see Vehicle: Parts
and consumables for the repair) (04B, Consuma-
bles - Products) and CLEAN CLOTHS to degrease
the joint faces:
- the cylinder head,
- the cylinder block.
2 - Checking the gasket face
a Check with a cylinder head rule and a set of feeler
gauges to determine if the joint face has been de-
formed.
WARNING
No regrinding of the cylinder head is permitted.
a The maximum deformation is 0.05 mm.
Note:
If the cylinder head is faulty:
- strip down the cylinder head (see Stripping the
cylinder head) (Technical Note 6006A, 10A,
Engine and peripherals),
- test the cylinder head for possible cracks using
the cylinder head test kit,
- rebuild the cylinder head (see Reassembling
the cylinder head) (Technical Note 6006A,
10A, Engine and peripherals).
II - REFITTING OPERATION FOR PART
CONCERNED
a Bring the pistons to mid-stroke position to prevent
any risk of contact with the valves when tightening
the cylinder head.
Note:
The operation to refit the cylinder head requires
two people.
Note:
The cylinder head gasket has a foolproofing
device which must be positioned on the cylinder
block inlet side.
a Fit:
- the new cylinder head gasket on the cylinder block,
- the cylinder head on the cylinder block.
WARNING
In order to ensure that the bolts are correctly
tightened, use a syringe to remove any oil which
may be in the cylinder head mounting holes.
WARNING
Do not oil the new bolts. Be sure to oil bolts
being reused.
a Refit new cylinder head bolts.
a Pretighten to torque and in order the cylinder head
bolts (initial torque) (20 N.m).
a Tighten to torque and in order the cylinder head
bolts (25 N.m).
a Check that all the cylinder head bolts are correctly
torque tightened 25 N.m.
a Angle tighten in order the cylinder head bolts (270˚
± ± ± ± 10˚).
III - FINAL OPERATION
a Refit the inner timing cover.
a Fit the alternator in place.
a Refit the alternator upper bolt.
a Torque tighten the alternator bolts (25 N.m).
a Connect the fuel drain pipe to the injector rail protec-
tor.
a Remove the blanking plugs on:
- each opening of the exhaust fuel injector solenoid
valve,
11A-242
11A
19712