2000 RENAULT SCENIC check engine

Downloaded from www.Manualslib.com manuals search engine ENGINE AND PERIPHERALS
Oil pressure
10
10-2
Oil pressure
CHECKING
The oil pressure should be checked when the engine
is warm (approximately 80 °C).
Contents of kit Mot. 836-05.
USE
C + F
Connect the pressure gauge in place of the oil
pressure switch.
Oil pressure
1000 rpm 1.2 bar
3000 rpm 3.5 barsSPECIAL TOOLING REQUIRED
Mot. 836-05 Boxed kit for measuring oil
pressure
ESSENTIAL SPECIAL TOOLING
22 mm long socket
87363R1

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Timing belt
11
11 - 1
111TOP AND FRONT OF ENGINE
Timing belt
SPECIAL TOOLING REQUIRED
Mot. 1054 TDC setting pin
Mot. 1387 Tool for checking the automatic
tensioner centreline
Mot. 1453 Engine support tool
Mot. 1505 Tool for measuring belt tension
Mot. 1543 Timing belt pretensioning torque
tool
Mot. 1294-01 Tool for removing windscreen
wiper arms
ESSENTIAL SPECIAL TOOLING
14 torx socket
REMOVAL
Put the vehicle on a 2 post lift.
Disconnect the battery.
Remove (for the SCENIC):
– the windscreen wiper arms,
– the front grilles,– the closure panel of the plenum chamber.
Remove (all types):
– the engine cover,
– the front right wheel as well as the mudguard,
– the accessories belt,
– the crankshaft accessories pulley. TIGHTENING TORQUES (in daN.m and/or ˚)
Tension roller nut 5
Crankshaft pulley bolt 2 + 115˚ ± 15˚
Suspended mounting limiter bolt 6.2
Suspended mounting cover bolt 6.2
Wheel bolts 9
11020R
11036R2

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Timing belt
11
11 - 2
Special features of vehicles fitted with air
conditioning:
Before removing the accessories belt, check the
centreline of the automatic tensioner (see
section 07 "Checking the accessories belt
tension").
Loosen bolt (A), then bolt (B) to past the shoulder
while holding the automatic tensioner plate using a
9.35 mm square, then relax the belt moving the
ratchet in the direction of the arrow.
Remove the Top Dead Centre pin plug.
Position the engine support, tool Mot. 1453 with the
retaining straps.Remove:
– the suspended mounting cover and its movement
limiter.
– the bolt (1), and slacken engine tie-bar bolt (2),
without removing it.
Adjusting the timing
Turn the crankshaft to align the camshaft and housing
timing marks while at the same time inserting the TDC
pin Mot. 1054 (begin to press one half tooth on the
pin before aligning the camshaft marks to prevent
it falling into a crankshaft balancing hole).
98837-1R4
13932R
17518R3
12518R2

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Timing belt
11
11 - 3
Remove the timing gear cases.
Release the tension wheel, then remove the timing
belt.
Check that the tension wheel and pulleys turn freely
without play.
NOTE: Slackening the tension wheel bolt by more
than one turn may cause it to come loose.
12518R

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Timing belt
11
11 - 4
REFITTING
Engine cold (ambient temperature).
Check that pin Mot. 1054 is in place.
Fit the timing belt by aligning the belt markings with
those of the camshaft, injection pump and crankshaft
sprockets.
Bring the tension wheel into contact with the belt by
tightening a bolt to the inner timing cover.
Remove pin Mot. 1054.Apply a pretensioning torque using Mot. 1543 (fitted
with cover N˚ 3) by using a torque wrench adjusted to
a torque of 1.1 daN.m on the edge of the belt to be
measured.
Pretensioning torque application and belt
tension check point
Pretensioning torque tool contact point
See Technical Note 3247A for the procedure for using
the tension measuring tool Mot. 1505.
12519-1R
16563-1R2
16292R

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Cylinder head gasket
11
11 - 6
Cylinder head gasket
SPECIAL TOOLING REQUIRED
Mot. 251 -01 Dial gauge support
Mot. 252 -01 Pressure plate to measure
piston protrusion
Mot. 1054 TDC setting pin
Mot. 1159 Tool for holding engine on
subframe
Mot. 1202 -01
Hose clip pliers
Mot. 1202-02
Mot. 1387 Tool for checking the automatic
tensioner centreline
Mot. 1448 Long nose pliers for hose clips
Mot. 1453 Engine support
Mot. 1505 Tool for measuring belt tension
Mot. 1453 Timing belt pretensioning
torque tool
ESSENTIAL SPECIAL TOOLING
Cylinder head testing equipment
14 torx socket
Angular tightening wrench
55 torx socket
REMOVAL
Put the vehicle on a 2 post lift.
Disconnect the battery.
Remove the engine undertray.
Drain the cooling circuit through the lower radiator
hose.
Remove:
– the timing belt (see method described in section 11,
"Timing belt").
– the two PAS pipe mountings on the right hand sub-
frame. TIGHTENING TORQUES (in daN.m and/or ˚)
Tension roller nut 5
Crankshaft pulley bolt 2 + 115˚ ± 15˚
Suspended mounting cover bolt 6.2
Suspended mounting limiter bolt 6.2
Torque reaction arm 6.2
Wheel bolts 9

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Cylinder head gasket
11
11-11
CLEANING
It is very important not to scratch the gasket faces
of any aluminium component.
Use the Décapjoint product to dissolve any part of the
gasket which remains attached.
W ear gloves whilst carrying out the following
operation.
– Apply the product to the parts to be cleaned; wait
about ten minutes, then remove it using a wooden
spatula.
W e must draw your attention to the care which
must be taken during this operation, to prevent
any foreign bodies from being introduced into the
oil ways (ducts located in the cylinder block and in
the cylinder head).
CHECKING THE GASKET FACE
Check for gasket face bow using a straight edge and a
set of shims.
Maximum deformation: 0.05 mm.
No regrinding of the cylinder head is permitted.
Check the cylinder head for cracks.Checking piston protrusion
Clean the piston heads in order to eliminate any traces
of deposits.
Turn the crankshaft in its operating direction, to bring
piston n ° 1 close to TDC.
Fit tool Mot. 252-01 on the piston.
Fit the tool Mot. 251-01 fitted with a gauge on the
pressure plate Mot. 252-01 (the dial gauge measuring
pin being in contact with the cylinder block) and look
for the TDC of the piston.
NOTE: All measurements are to be carried out in the
longitudinal axis of the engine, in order to eliminate
any errors due to tilting of the piston.
Max. piston protrusion: 0.72 ± 0.077 mm
12516S

Downloaded from www.Manualslib.com manuals search engine TURBOCHARGING
Pressure adjustment
12
12-3
Pressure adjustment
TURBOCHARGING PRESSURE LIMITATION
VALVE (WASTEGATE)
NB: the limitation valve operates in the opposite
way to the usual fittings.
The absence of control pressure causes a
turbocharging pressure limitation.
Check that there are no leaks between the vacuum
pump and the limitation valve.
Checking calibration pressure
Fit on vehicle.
Use a dial gauge which should be positioned at the
end of the wastegate rod (as far as possible in the
wastegate axis).
An underpressure is progressively generated on the
wastegate using a manual vacuum pump.Calibration values
Fitting on the vehicle
When checking the calibration pressure it may be
necessary to adjust the wastegate rod length (A) (if
the pressure is not within tolerance).
This adjustment is made with the turbocharger in
place.
Loosen the lock nut then loosen or tighten the
adjusting nut (B).
Validate the repair in a road test, checking the "RC0
turbocharging limiter valve" parameters and the
"turbocharging pressure" on the diagnostic tools.
17827S
Underpressure
valuesRod movement
(mm)
120 mb Between 1 and 4 mm
400 mb Between 10 and 12 mm
> 450 mb Rod at stop
17827-1R3