spark plugs RENAULT CLIO 1997 X57 / 1.G Petrol Engines Workshop Manual

ENGINE AND PERIPHERALS
S
pecifications10
VALVE CLEARANCES (in mm)
- Inlet0.10
- Exhaus
t0.25
Hei
ght of cylinder head
10032R
H = 113 ±
0.05 mm
Maximum deformation of
gasket face: 0.05 mm.
No re
grinding is permitted.
C
ylinder volume with valves
and s
park plugs:
26.25 ±
0,6 cm3
Spark plug tightening torque: 2.5 to 3 daN.m
VALVES
Diameter of the stem (mm) :
7
Port an
gle
- Inle
t120°- Exhaust90°
Head diameter (mm)
- Inlet37.5 ±
0,1
- Exhaust33.5 ±
0,1
WARNING: When valves are re
placed, it is essen-
tial to refit
(new) valves with the same part num-
ber
(1) as the previous ones, in order to prevent
an
y damage to the valve and seat.
10030R
The same part number can cover several mar-
kin
gs, and in this case the valves are fully inter-
chan
geable.
Sim
ply check that the new valves with a different
markin
g do indeed correspond to the same part
number.
10-11
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ENGINE AND PERIPHERALS
Standard exchan
ge10
PREPARATION OF USED ENGINE FOR RETURN
The engine should be cleaned and drained (oil
and water
).
Leave on the used engine or put into the box use
d
for returning it:
- the dipstick and its guide,
- the flywheel or the starter plate,
- the clutch disc and mechanism,
- the fuel pump,
- the water pump,
- the crankshaft pulley,
- the cylinder head cover,
- the spark plugs,
- the belt tensioner,
- the pressure switch and temperature switch,
- the timing cover,
- the oil filter.
Do not forget to remove:
- all the flexible coolant pipes,
- the belt or belts (except timing belt).
The used engine must be fixed on to the wooden
base in the same way as the reconditioned en-
gine:
- plastic plugs and caps in place,
- cardboard cover all around it.
10-20
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ENGINE AND PERIPHERALS
En
gine repair10
- the camshaft seal,
- the camshaft flange,
92078R
10010S
- the camshaft,
- the fuel pump (if fitted),
- the distributor with the ignition wiring loom,
- the thermostat housing,
- the spark plugs,
- the camshaft sprocket, after immobilising i
t
with
Mot. 799-01.
Compress the valve springs (e.g. with
FACOM tool
U43L).
Remove the collets, the upper cups, the springs,
the valves, the valve seals using the pliers
Mot.
1335 and the lower cups. The wearing of gloves is recommended during
this operation.
Do not allow any product to drip on to paintwork.
We would like to stress that the utmost care
should be taken in carr
ying out this operation to
prevent foreign bodies from penetrating the
pipes feeding oil under pressure to the camshafts
(pipes located both in the cylinder block and in
the c
ylinder head) and in the oil return pipe.
Failure to follow this instruction would in fact ris
k
blocking the nozzles of the valve rockers and qui-
ckly causing damage to the rocker cams and fin-
gers. Cleanin
g
It is very important not to scratch the sealing
faces of aluminium parts.
Use the product Decapjoint to dissolve any part of
the seal which remains.
Apply the product to the part to be cleaned; wai
t
about ten minutes, then remove it by means of a
wooden spatula.
10-29
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