oil pressure RENAULT SCENIC 2000 J64 / 1.G Technical Note 3426A Workshop Manual

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Page
07
10
11
12
VALUES AND SETTINGS
Capacities - Grades 07-1
Accessories belt tension 07-2
Checking the accessories belt tension 07-3
Tightening the cylinder head 07-5
Tyres and wheels 07-6
Brakes 07-7
Brake compensator 07-8
Underbody height 07-9
Front axle angle checking values 07-11
Rear axle angle checking values 07-13
ENGINE AND PERIPHERALS
Identification 10-1
Oil pressure 10-2
Engine and transmission assembly 10-3
Sump 10-8
TOP AND FRONT OF ENGINE
Timing belt 11-1
Cylinder head gasket 11-6
FUEL MIXTURE
Air inlet 12-1
TURBOCHARGING
Pressure regulating valve 12-2
Pressure adjustment 12-3
Turbocharger 12-4
Air-air exchanger 12-7
Manifolds 12-9
Priming catalytic converter 12-12Page
13
14
DIESEL EQUIPMENT
Technical specifications 13-1
Special features 13-3
Cleanliness 13-6
Location of components 13-9
Injection warning light 13-12
Immobiliser function 13-13
Injection programming/ air conditioning 13-14
Idle speed correction13-16
Pre-postheating control 13-17
Heater plugs 13-18
Thermoplunger 13-19
Low pressure pump (supercharging
pump)13-21
Fuel filter 13-22
High pressure pump 13-23
Injector gallery 13-27
Injectors 13-32
Checking diesel pressure and flow 13-37
Pressure sensor 13-38
Pressure regulator 13-39
Accelerator potentiometer 13-40
Centralised coolant temperature
management 13-41
Computer 13-42
ANTIPOLLUTION
Oil vapour rebreathing 14-1
Exhaust gas recirculation 14-2

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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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Cylinder head gasket
11
11-10
– the low pressure pump connector,
– the bolts (1) and (2),
– the alternator mounting bolts and remove the
alternator, then remove the bolts (3).
Loosen the exhaust pipe clamp mounting.
Remove:
– the catalytic converter mountings on the pre-catalytic
converter,
– the pre-catalytic converter stay (1),
– the mounting (6),
– the oil supply pipe at (7) and remove towards the
bulkhead,
– the pre-catalytic converter mountings to the turbo,
– the catalytic converter removing the engine towards
the cooling system,
– the oil return pipe (8),– the bolt (9) and loosen the other mounting bolts on
the lower timing cover without removing them,
– cylinder head bolts.
Release the cylinder head by setting aside the lower
part of the camshaft housing, without causing the
cylinder head to turn, since this is centred by the two
dowels.
PRF1103
16155R
16156R2
12521-1R3

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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

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Turbocharger
12
12-6
REFITTING
For refitting operations, use the same procedure as for
removal in reverse.
IMPORTANT: you must change the copper gasket at
the turbo oil inlet connection.
IMPORTANT:
Before starting the engine disconnect the pressure
regulator manifold on the high pressure pump.
Then run the starter motor until the oil pressure
warning light goes out (wait a few seconds).
Reconnect the regulator, preheat and start the engine.
Run the engine at idling speed and check that there
are no leaks at the oil connections.
Erase the fault and check the turbocharging pressure
solenoid valve sensor.
16869S
Special precautions
!Before refitting, make sure that the lubrication is
correct for the turbocharger bearings. To do this
activate the starter motor having first
disconnected the high pressure manifold regulator
(do not start the engine) (erase the computer
memory). Sufficient oil should arrive via the oil
pressure pipes (place a container below). If this is
not the case, change the lubrication pipe.
!Ensure that no foreign bodies enter the turbine or
compressor during the refitting operation.
!If there has been a fault in the turbocharger, check
that the air-air exchanger is not full of oil.
If the air-air exchanger is full of oil, it must be
removed, flushed with a cleaning agent and then
left to drain properly.
!Check that the turbocharger oil return pipe is not
partially or completely blocked by scale. Check
also that it is perfectly tight. If not, replace it.

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Cleanliness
13
13-6
Cleanliness
CLEANLINESS INSTRUCTIONS WHICH MUST BE FOLLOWED WHEN WORKING ON THE HIGH PRESSURE
DIRECT INJECTION SYSTEM
Risks relating to contamination
The system is very sensitive to contamination. The risks caused by the introduction of pollution are:
– damage to or destruction of the high pressure injection system,
– seizing of a component or a component which is not sealed.
All after-sales operations must be performed under very good cleanliness conditions. This means that no impurities
(particles a few microns in size) have penetrated into the system during removal or into the circuits via the fuel
unions.
The cleanliness principle must be applied from the filter to the injectors.
WHAT ARE THE POLLUTING ELEMENTS?
The elements which pollute are:
– metal or plastic splinters,
– paint,
– fibres:
!of cardboard,
!of brushes,
!of paper,
!of clothing,
!of cloths.
– foreign bodies such as hair,
– ambient air,
– etc.
WARNING: it is impossible to clean the engine using a high pressure washer at the risk of damaging connections.
Also the moisture may collect in the connectors and cause electrical connection problems.
INSTRUCTIONS TO BE FOLLOWED BEFORE
ANY WORK IS CARRIED OUT ON THE INJECTION SYSTEM
!Ensure that you have plugs for the unions to be opened (bag of plugs sold by the Parts Department).
Plugs are to be used once only. After use, they must be thrown away (once used they are soiled and cleaning is
not sufficient to make them reusable).
Unused plugs must be thrown away.
!Ensure that you have the resealable plastic bags for storing removed parts. There is less risk of parts stored in this
way being subjected to impurities. The bags can be used only once, and once used they must be thrown away.
!Ensure that lint-free cleaning wipes are available (cloths with SODICAM part numbers). The use of conventional
cloth or paper is prohibited. In fact, these create lint and may contaminate the system's fuel circuit. A lint-free
cloth should only be used once.

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Connecting pipes
62
62-6
SCENIC Connecting pipes
Disconnect the battery.
Drain the R134a refrigerant circuit using the filling equipment (refer to the procedure described in the "Air
Conditioning" manual).
LOW PRESSURE PIPE
REMOVAL
Remove the right hand cowl vent grille.
Slacken the left hand cowl vent grille.
Remove:
– the scuttle,
– the mounting bolt on the pressure relief valve,
– the mounting bolt on the compressor.
Fit plugs to prevent any moisture penetration.
Remove the low pressure hose.
The low pressure circuit can be partially dismantled by
unclipping the click-fit connector (1).
REFITTING
Refitting is the reverse of removal.
Check the condition of the seals and lubricate with
PLANETELF PAG 488 (approximately 2 g).
When changing a pipe, add 10 ml of PLANETELF
PAG 488 oil or when a pipe bursts (rapid leak), add
100 ml.HIGH PRESSURE PIPE BETWEEN THE
COMPRESSOR AND THE CONDENSER
REMOVAL
Remove:
– the mounting bolt on the compressor,
– the mounting bolt on the condenser.
Disconnect the tri-function pressure switch.
Remove the high pressure hose.
Fit plugs to prevent any moisture penetration.
REFITTING
Refitting is the reverse of removal.
Check the condition of the seals and lubricate with
PLANETELF PAG 488 (approximately 2 g).
When changing a pipe, add 10 ml of PLANETELF
PAG 488 oil or when a pipe bursts (rapid leak), add
100 ml.
PRF6203
PRF6204

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Connecting pipes
62
62-7
SCENIC
Disconnect the battery.
Drain the R134a refrigerant circuit using the filling equipment (refer to the procedure described in the "Air
Conditioning" manual).
HIGH PRESSURE PIPE BETWEEN THE
DEHYDRATION CANISTER AND THE PRESSURE
REDUCING VALVE
REMOVAL
Remove the right hand cowl vent grille.
Slacken the left hand cowl vent grille.
Remove the scuttle,
Detach the pipe from its mountings.
Remove the high pressure hose.
Fit plugs to prevent any moisture penetration.
REFITTING
Refitting is the reverse of removal.
Check the condition of the seals and lubricate with
PLANETELF PAG 488 (approximately 2 g).
When changing a pipe, add 10 ml of PLANETELF
PAG 488 oil or when a pipe bursts (rapid leak), add
100 ml.HIGH PRESSURE PIPE BETWEEN THE
DEHYDRATION CANISTER AND THE CONDENSER
REMOVAL
Remove:
– the mounting bolt on the dehydration canister,
– the mounting bolt on the condenser.
Fit plugs to prevent any moisture penetration.
Remove the high pressure hose.
REFITTING
Refitting is the reverse of removal.
Check the condition of the seals and lubricate with
PLANETELF PAG 488 (approximately 2 g).
When changing a pipe, add 10 ml of PLANETELF
PAG 488 oil or when a pipe bursts (rapid leak), add
100 ml.
PRF6205
PRF6206