check oil RENAULT MEGANE SCENIC 1995 Service User Guide

ANTIPOLLUTION
Oil vapour rebreathing
14
E7J engine
PRESENTATION OF THE CIRCUIT
94563R3
Upstream rebreathing circuit
1Take-off on air filter
2Filter - nozzle connecting pipe
3 6 mm diameter nozzle
Downstream rebreathing circuit
4 1.5 mm diameter nozzle
5Restriction to T union connecting pipe
6T union
7Take-off on inlet manifold
8To canister bleed
CHECKING
To guarantee correct operation of the
antipollution system, the oil vapour rebreathing
circuit should be kept clean and in good
condition.
Check the nozzles are present and correct.
14-9

99231R
ANTIPOLLUTION
Oil vapour rebreathing
14
K7M engine
PRESENTATION OF THE CIRCUIT
1Cylinder head
2Manifold
3Oil vapour rebreathing pipe connected upstream of the throttle body (the circuit is used for average and
high loads)
4Oil vapour rebreathing pipe connected downstream of the throttle body
5Fuel vapour recirculation pipe
6T piece connecting the oil vapour rebreathing pipe (4) and fuel vapour recirculation pipe (5)
7Oil vapour rebreathing pipe and fuel vapour recirculation pipe
8Air duct
95 mm diameter nozzle
CHECKING
To guarantee correct operation of the antipollution system, the oil vapour rebreathing circuit should be kept
clean and in good condition.
Check the nozzle is present and correct.
14-10

DI1407-1
ANTIPOLLUTION
Oil vapour rebreathing
14
F3R engine
PRESENTATION OF THE CIRCUIT
1Inlet manifold
2Throttle body
3Oil vapour rebreathing pipe (connected to throttle body)
4Oil decanter
5Oil vapour rebreathing pipe from the engine to the decanter
The restrictions upstream and downstream of the oil vapour rebreathing system are moulded into the
throttle body.
CHECKING
To guarantee correct operation of the antipollution system, the oil vapour rebreathing circuit should be kept
clean and in good condition.
14-11

ANTIPOLLUTION
Catalytic converter - oxygen sensor
14
CHECKS TO BE MADE BEFORE THE ANTI-
POLLUTION TEST
Ensure:
- the ignition system is operating correctly
(correct spark plugs, correctly set plug gap,
high voltage leads in good condition and
correctly connected).
- the injection system is operating correctly
(supply is correct - check using the XR25).
- the exhaust pipe is correct and is sealed.
- the EGR is operating correctly.
Check the vehicle history if possible (run out of
fuel, lack of power, use of incorrect fuel).
CHECKING ANTI-POLLUTION STANDARDS
Run the engine until the engine cooling fan has
operated twice.
Connect a correctly calibrated four gas analyser to
the exhaust tail pipe.
Keep the engine speed at 2500 rpm for
approximately 30 seconds then let the engine
return to idle speed and note the pollutant values.
CO
≤0.3 %
CO
2≥14.5 %
HC
≤100 ppm
0,97
≤λ≤1.03
1
NOTE : λ = ————
richness
λ>1→lean mixture
λ<1→rich mixture
If, after these tests, the values are correct, the
antipollution system is correct.
If the values are not correct, additional tests must
be carried out:
- Check the condition of the engine (condition
of the oil, valve clearances, timing, etc,...),
- Check the correct operation of the oxygen
sensor (see section 17) ,
- test for the presence of lead (see following
page).
If the test for the presence of lead is positive, en-
sure the vehicle uses two or three full tanks of un-
leaded fuel before replacing the oxygen sensor.
If, after all these tests have been carried out, the
values still do not conform, the catalytic converter
must be replaced. Petrol engine
14-21

21-1
21-2
21-3
21-4
21-5
21-5
21-6
21-9
21-19
21-23
21-26
Contents
Page
23-1
23-2
23-3
23-3
23-4
23-5
23-5
23-5
23-6
23-6
23-7
23-8
23-8
23-9
23-15
23-20
23-23
23-27
23-29 Section view
Use
Identification
Gear ratios
Gear change thresholds
Consumables
Parts to be systematically replaced
Oil
Oil change frequencies
Fault warning light
Draining
Filling - levels
Oil pressure
Hydraulic distributor
Automatic transmission (Removal -
Refitting)
Differential output seal
Wiring
Wiring diagram
Checking the "timing point" on the
converter AUTOMATIC TRANSMISSION
23
Transmission
CLUTCH
Identification
Section views
Exploded views
Consumables
Fault finding
Mechanism - Plate
Thrust pad - Fork20
20-1
20-3
20-3
20-4
20-5
20-13
20-14
Identification
Ratios
Capacity -Lubricants
Special notes
Consumables
Parts to be systematically replaced
Fault finding
Gearbox (Removal - Refitting)
5th gear on the vehicle
Differential output seal
Speedometer drive gear
MANUAL GEARBOX21
29-1
29-2
29-9
29-10
29-17
29-24 Consumables
Driveshafts
Front transverse driveshafts
Gaiter on wheel end
Gaiter on gearbox end
Bearing gaiter DRIVESHAFTS
29
Page

CLUTCH
Fault finding
20
The clutch is slipping :
- when stopped, handbrake on, at 2000 to
3000 rpm, impossible to stall the engine
when letting the clutch in,
- with 4th or 5th gear engaged, the engine
seems to race.
Check the travel of
the fork (1)
INCORRECT
KEY
Fault found
Check
Operations to be
carried out
(*)Depending on version
(1)See "Removal - Refitting" chapter(2)Grommet placed on the end of the clutch
cable on the gearbox end Check the
clearance
INCORRECTCORRECT
CORRECTINCORRECT
CORRECT
Check the
condition of the
pins and support
points
INCORRECT
Replace the
faulty partsCheck the condition
of the pedal and the
assistance spring (*)
Replace the
faulty parts
Replace the
fork
OILYWORN
Check the condition
of the clutch
Replace the
clutchReplace the clutch and
repair the leak
INCORRECT
Repair the
automatic
adjustment
device
INCORRECTCORRECT
CORRECT
Check the
automatic
adjustment device
CORRECT
Check the condition
of the cable and the
anti-noise rubber
washer (2)
Check the
condition of the
fork
20-5

CLUTCH
Fault finding
20
The gearbox clunks in 1st or
reverse gear only when
cold:
- vehicle stationary,
- engine running.
Check the grade
of the
gearbox oil
INCORRECT
Change the oilCheck the internal
parts of the gearbox
CORRECT
20-7

MANUAL GEARBOX
Diagnostic
21
Abnormal noises when driving
• Stop the vehicle
• Engine running
• Gear lever in neutral
Check
driveshafts
Check
wheel
bearingsReplace the
driveshafts
Replace the
wheel bearings
CorrectIncorrect
CorrectIncorrect
The noise
stops
Yes
Check the thrust
pad, cable and
plate
Replace the faulty
parts
The noise
stops
Look for the
noise in the
engine
Amount
of clearance
Check the toothed
sector of the clutch
pedal and the
cable
Oil level
YesNo
CorrectIncorrect
No
Look for the noise in
the engine
Remove the gearbox
and repair it
The noise
stops
Yes
No
Clutch fully depressed
Remove the
gearbox and
repair it
21-7

MANUAL GEARBOX
Gearbox (Removal - Refitting)
21
Position the driveshaft with respect to the sun-
wheel, pivot the stub-axle carrier, engaging the
driveshaft into the sunwheel using the shouldered
pin B.Vi. 31-01 in order to align the holes. F engine
A chamfer on the leading edge of the sunwheel
facilitates makes it easier to fit new roll pins.
Seal the ends
(RHODORSEAL 5661).
Fill with fluids.
Fit the caliper mounting bolts with Loctite
FRENBLOC and tighten to the correct torque.
Press the brake pedal several times to bring the
pistons back into contact with the brake pads. F
engine
86070-1R1
Check the adjustments of the upper mountings
(refer to chapter 10).
Ensure that the movement limiter is mounted the
correct way round: the nuts should be fitted on
the exhaust pipe side.
92661S
74937-4S
Tighten all nuts and bolts to the recommended
torques.
Fill the gearbox with oil.
21-18

MANUAL GEARBOX
5th gear on the vehicle
21
Put a wooden block between the 5th gear fork
and the drive gear to take the backlash and refit a
new pin into the 5th gear fork using B.Vi. 31-01
complying with the assembly direction, the split
should be pointing towards the rear housing.
90498-1S
85979R1
Fit a new O-ring to ensure that the rear housing is
sealed.
Return the gearbox to neutral and check that all
gears can be engaged.
If any problems occur, check that reverse gear is
not engaged.Fit the rear housing by engaging nozzle (A) into
the primary shaft.
Tighten the mounting bolts to a torque of 2.4
daN.m.
87180R
Fill the gearbox with oil.
Check that the rear housing does not leak when
the engine is running.
21-22