Renault F4R - Page 347

11A-173
TOP AND FRONT OF ENGINE
Cylinder head: Removal - Refitting
K4M
11A
1 - Cleaning the cylinder head joint face
a
a Use SUPER CLEANING AGENT FOR JOINT FA-
CES (see Vehicle: Parts and ingredients for the
repairwork) (04B, Consumables - Products) to
clean:
-the cylinder head gasket face if being reused,
-the cylinder block gasket face.
a Use SURFACE CLEANER (see Vehicle: Parts
and ingredients for the repairwork) (04B, Consu-
mables - Products) to degrease:
- the cylinder head gasket face if being reused,
- the cylinder block gasket face.
2 - Checking the gasket face
a Check for gasket face deformation using a ruler and
a set of shims.
a The maximum deformation is 0.05 mm.
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.
IMPORTANT
Wear goggles with side protectors for this opera-
tion.
IMPORTANT
Wear leaktight gloves (Nitrile type) for this opera-
tion.
WARNING
Do not scrape the joint faces of the aluminium,
any damage caused to the joint face will result in
a risk of leaks.
WARNING
Do not allow this product to drip onto the pain-
twork.
Clean the cylinder head carefully to avoid any
foreign bodies entering the oil return and supply
pipes.
Failure to follow this advice could lead to the
blocking of the various oil inlet galleries, which
would quickly result in engine damage.
WARNING
To ensure proper sealing, the gasket surfaces
must be clean, dry and not greasy (avoid any fin-
ger marks).
WARNING
Protect the oilway so that foreign bodies do not
enter the oil pipes in the cylinder head.
Failure to follow this instruction could lead to the
blocking of the oilways, resulting in a rapid dete-
rioration of the camshaft.
WARNING
No regrinding of the cylinder head is permitted.
Note:
If the cylinder head is faulty:
- strip down the cylinder head (see Stripping the
cylinder head) (Technical Note 6023A, 10A,
Engine and peripherals),
- test the cylinder head in order to detect any
possible cracks using the cylinder head test kit
(see Cylinder head testing equipment: Use)
(Technical Note 6026A, 11A, Top and front of
engine),
- rebuild the cylinder head (see Rebuilding the
cylinder head) (Technical Note 6023A, 10A,
Engine and peripherals).
WARNING
To ensure proper sealing, the gasket surfaces
must be clean, dry and not greasy (avoid any fin-
ger marks).