tow RENAULT MEGANE SCENIC 1995 Service Repair Manual

77 11 176 201APRIL 1995Edition Anglaise
General
"The repair methods given by the manufacturer in this document are based on the
technical specifications current when it was prepared.
The methods may be modified as a result of changes introduced by the
manufacturer in the production of the various component units and accessories
from which his vehicles are constructed."All copyrights reserved by the Regie Nationale des Usines Renault.
Copying or translating, in part or in full, of this document or use of the service part
reference numbering system is forbidden without the prior written authority of the
Regie Nationale des Usines Renault.
Régie Nationale des Usines Renault S.A. 1995
SPECIFICATIONS
LIFTING
TOWING
LUBRICANTS CONSUMABLES
DRAINING, RE-FILLING
BA0A - BA0E - BA0F - BA0G - BA0L - BA0U
C
VALUES AND SETTINGS

TOWING
All types
Contents
SPECIFICATIONS
Engine - Clutch - Gearbox
Vehicle identification01-1
01-2
LIFTING
Trolley jack - Axle stands
Vehicle liftsPage01
02
03
General
02-1
02-2
03-1
LUBRICANTS - CONSUMABLES
Packaging 04-1
DRAINING, RE-FILLING
Engine
Gearbox
Power assisted steering
04
05
05-1
05-3
05-4
VALUES AND SETTINGS
Dimensions
Capacity - Grades
Belt tension
Accessories belt tension
Timing belt tension
Tightening the cylinder head
Dimensions of the main braking
components
Values for checking the front axle
geometry
Values for checking the rear axle
geometry
Underbody heights
Brake limiter
07
07-1
07-2
07-5
07-7
07-13
07-15
07-17
07-18
07-21
07-22
07-23

TOWING
All types
FRONT
03
OBSERVE THE LEGAL TOWING REQUIREMENTS OF THE COUNTRY YOU ARE IN.
NEVER USE THE DRIVESHAFTS FOR TOWING THE VEHICLE.
The towing points may only be used for towing the vehicle on the road. They should never be used for remo-
ving the vehicle from a ditch or for any other similar breakdown operation or to lift the vehicle, either direct-
ly or indirectly.
98705S
REAR
98702S
03-1

FUEL SUPPLY
Fuel gallery
13
Remove the four bolts mounting the throttle
body (do not disconnect the coolant hoses which
warm the throttle body).
Remove the heat shield between the throttle
body and the manifold.F3R engine
99239-1R
Unclip the wiring and the pipe mounted on the
manifold and tilt the assembly towards the
injection computer.
Disconnect the injectors.
Remove the wiring mounting.
Disconnect:
- the fuel supply pipe (17) on the flywheel end,
marked by a green ring,
- the return pipe to the fuel tank (18) at the
timing end, marked by a red ring,
- the vacuum pipe (19) for the fuel pressure
regulator.
99229R
Remove the fuel gallery by sliding it along the
inlet manifold.
99229-1S
Remove:
- the two fuel gallery mounting nuts,
- the earth strap (15).
13-6

ANTIPOLLUTION
Catalytic converter
14
FAULT FINDING
Faults which may cause a customer complaint due
to the catalytic converter.
1. Catalytic converter polluted by an
accumulation of soot, causing poor efficiency
of the converter.
Cause :
- prolonged town driving,
- air filter dirty,
- poor operation of the EGR system
- injection pump fault, etc.
Customer complaint:
- lack of power,
- large amount of smoke.
Solution:
De-contamination of the exhaust pipe by hard
driving on open roads.
2. Loss of efficiency due to premature aging of
the monolith*
Cause :
- injection incorrectly set,
- oil vapour rebreathing fault, etc.
Customer complaint:
Abnormal engine operation.
Solution:
Replace the catalytic converter.
(*) By prolonged operation at exhaust gas
temperatures which are too high (greater
than 800°C). Diesel engine
14-20

STARTING - CHARGING
Alternator
16
OPTIMA 5800 diagnostic station
CHECKING THE CHARGING CIRCUIT USING THE DIAGNOSTIC STATION
The OPTIMA 5800 diagnostic station is used to test the alternator by measuring the voltage and current flow,
with and without electrical consumers.
NOTE : the ampermetric clamp on the station is of the inductive type (measuring range : 0 to 1000 A). It may
be positioned without disconnecting the battery, whichallows computers to retain their memory and set-
tings.
Depending on the engine, the ampermetric clamp may be positioned in different locations (the diagnostic
station will detect incorrect positioning) :
- F3R, F8Q engines : directly at the alternator output, the arrow on the clamp pointing towards the alterna-
tor.
- E7J, K7M engines : on the cable connecting the positive battery terminal to the alternator (this cable
crosses the battery compartment partition).
Measurements are made in three stages:
- measurement of battery voltage, ignition off,
- measurement with no consumers of the regulated voltage and current flow,
- measurement with the maximum number of consumers of the regulated voltage and current flow.
At the end of the test, the values noted will form the basis of a diagnostic report message:
- Battery voltage no load < 12.3 V = battery discharged.
Without consumers:
- Regulated voltage > 14.8 V = > regulator faulty,
- (Regulated voltage no load < 13.2 V) or (charging current < 2 A = > charging fault).
With consumers:
- Regulated voltage > 14.8 V = > regulator faulty,
- Regulated voltage < 12.7 V = > check the alternator flow with reference to its specifications:
Engine E7J K7M F3R F8Q
Without air conditioning 75 (45) 75 (50) 75 (50) 75 (50)
With air conditioning / 110 (80) 110 (80) 110 (80)
Notes for the table: - Current values in Amps.
- The value in brackets corresponds to the minimum flow which should be
supplied by the alternator when all consumers are connected.
FAULT FINDING
SPECIAL TOOLING REQUIRED
16-7

INJECTION
Adaptive richness correction
17
PRINCIPLE
In the loop mode (see section 17 "Richness regulation"), richness regulation (# 35), corrects the injection ti-
ming to give fuel metering which is as close as possible to richness 1. The correction value is close to 128, with
limit values of 0 and 255.
Variations may affect the components of the injection system and the correction may drift towards 0 or 255,
to ensure richness 1 is obtained.
Adaptive correction allows the injection mapping to be adjusted to recentre the richness regulation to 128
and to ensure a constant authority of correction to make the mixture leaner or richer.
Adaptive correction to richness regulation has two parts:
- Adaptive correction for average and high engine loads (#30)
- Adaptive correction for idle speed and low engine loads (#31).
Adaptive corrections take 128 as the average value after initialisation (erasing the memory ) and have the
following threshold values:
F3R engine K7M 702/703 engine K7M 720 engine E7J engine
82 ≤ #30 ≤ 224 0 ≤ #30 ≤ 208 0 ≤ #30 ≤ 208 112 ≤ #30 ≤ 160
32 ≤ #31 ≤ 224 104 ≤ #31 ≤ 255 100 ≤ #31 ≤ 255 104 ≤ #31 ≤ 160
Adaptive correction only takes place when the engine is warm, in the loop phase (#35 variable) and for a
specified manifold pressure range.
The engine must have operated in the loop mode for several pressure zones in order that adaptive correc-
tion begins to change to compensate for the variations in engine operating richness.
Following reinitialisation of the computer (return to 128 for # 30 and # 31) a special road test must therefore
be carried out.
17-36

MANUAL GEARBOX
Gearbox (Removal - Refitting)
21
Remove the heat shield. Remove the upper mounting assembly on the
gearbox end .F
engine
Remove :
- the bolts around the gearbox,
- the starter motor,
- the connectors linked to the gearbox.
Remove the exhaust downpipe.
98827S
98865R2
Remove gear lever return spring.
Move and secure the gear lever towards the rear.
99309S1
21-15

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

AUTOMATIC TRANSMISSION
Use
23
DRIVING
The automatic transmission is lubricated under
pressure and therefore this only occurs if the en-
gine is running.
As a result, and with the risk of serious damage,
the following instructions must be complied with:
- never drive with the ignition off
(going down-
hill for example), we cannot stress enough how
dangerous this practice is.
- never push a vehicle (eg. : to reach a petrol
pump), except by following the instructions in
the "Towing" paragraph.
In addition, the vehicle is only driven if the engine
is running. It is therefore impossible to start the
engine of a vehicle with automatic transmission
by pushing it.
TOWING
In all cases, it is preferable to tow the vehicle on a
trailer or with the front wheels off the ground.
However, if this is not possible, the vehicle can be
towed at a speed below 25 mph (40 km/
h and
over a maximum distance of 30 miles (50 km) (le-
ver in N).
23-2