RENAULT MEGANE SCENIC 1995 Service Repair Manual

MANUAL GEARBOX
Diagnostic
21
Grinding noise when
engaging a gear
Remove the gearbox
Check the synchro and
the synchro spring of
the faulty gear
Clunking when each gear is
engaged
(after checking clutch)
Remove the gearbox
Check the synchros
and the synchro hubs
Impossible to engage gears
(after checking the clutch)
Check the
adjustment of
the selection
linkage
IncorrectCorrect
Condition
of the parts of
the linkage
CorrectIncorrect
Remove the gearbox
Check the gearbox
locking system
Replace the faulty
parts
Adjust the linkage
Adjust the linkage
Operations to be
carried out
KEY
Check
21-6

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
Diagnostic
21
Gears jump out
Check
engine and
gearbox
mountings
Adjust the
linkageTighten the bolts or
replace the
mountings
Remove the gearbox
Check the locking
system of the hubs
and sliding gears
IncorrectCorrect
CorrectIncorrect
Replace the faulty
parts
Adjust the linkage
Gear sticking
Adjust the
control
Check the
parts forming
the control
Remove the gearbox
and check:
- the locking balls
- the forks
- the locking plungers
CorrectIncorrect
Adjust the gearbox
control
IncorrectCorrect
Replace the faulty
parts
Adjust the linkage
21-8

MANUAL GEARBOX
Gearbox (Removal - Refitting)
REMOVAL
- Put the vehicle on a two post lift.
- Disconnect the battery.
- Remove the front wheels.
- Remove the engine undertray.
- Drain the gearbox.
LEFT HAND SIDE OF THE VEHICLE:
Remove:
- the wheel arch (protection),
- the track rod end using tool T.Av. 476.
SPECIAL TOOLING REQUIRED
B.Vi. 31-01 Set of pins
T.Av. 476 Ball joint extractor
21
Bolts of the rear linkage of the suspended
engine mountings (tie-bar) 6
Bolts for securing battery mounting on body 2
Driveshaft gaiter mounting bolt 2.4
Gearbox mounting bolt 3.5
Gearbox control rod bolt 2.8
Shock absorber base bolt 17
Track rod end nut 3.5
Stub-axle key nut 6
Support mounting bolts 4.5
Wheel bolts 9
Caliper guide bolts 2.7
TIGHTENING TORQUES (in daN.m)
All engines
85965R
Remove:
- the two mounting bolts from the caliper by se-
curing the caliper to the suspension spring to
avoid stretching the pipe,
- the three mounting bolts of the driveshaft gai-
ter.
92122R2
21-9

MANUAL GEARBOX
Gearbox (Removal - Refitting)
- the stub-axle carrier driveshaft assembly by re-
leasing the lower ball joint,
- the sub-frame-side member tie rod (A).
21
All engines
RIGHT HAND SIDE OF THE VEHICLE:
Remove the driveshaft pins using toolB.Vi. 31-01
90130R2
Remove :
- the bolt (1),
- the 2 mounting bolts (2) from the base of the
shock absorber,
Check that the driveshaft rollers cannot be remo-
ved by hand. If this is the case, when refitting,
check that the needles have not fallen into the
gearbox.Remove the bolts from the base of the shock ab-
sorber.
98712R1
Tilt the stub-axle carrier and release the drives-
haft.
Remove the stub-axle carrier driveshaft assembly
by releasing the lower ball joint.
Remove and secure the brake caliper.
Remove the mudguard.
Remove the sub-frame body tie rod.99070R1
91755-1R2
21-10

MANUAL GEARBOX
Gearbox (Removal - Refitting)
21
E and K
engines
REFITTING
Coat the sides of the guide tube and the fork pads
with
MOLYKOTE BR2 grease.
Position the fork on the notches of the clutch
thrust pad.
Connect the engine to the gearbox.
Check that the rings (C) for centring the engine-
gearbox are present and are in the correct posi-
tion.
86308R2
Special notes for E7J - K7M engines
Remove the engine/gearbox assembly from above
(see Workshop Repair Manual Chap. 10).
Once the engine and transmission assembly is sui-
tably clear, remove the bolts from around the
gearbox.
Release the gearbox from the engine by removing
the pin (C).
86415R2
Refit:
- the heat shield,
- the exhaust downpipe.
Refit the other components by carrying out the re-
moval operations in reverse (see Workshop Repair
Manual Chapter 10).
21-11

MANUAL GEARBOX
Gearbox (Removal - Refitting)
21
Position the driveshaft with respect to the sun-
wheel, pivot the stub-axle carrier and engage the
driveshaft into the sunwheel using the shouldered
pin B.Vi. 31-01 in order to align the holes.IMPORTANT
Fit the bolt (V) and the starter motor centring do-
wel (D) correctly :
E and K engines
A chamfer on the leading edge of the sunwheel
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. E and K
engines
86070R3
Reconnect the speedo cable, ensuring that the clip
is the correct way round.
92108-1S
74937-4S
Tighten all nuts and bolts to the recommended
torques.
Fill the gearbox with oil.
21-12

MANUAL GEARBOX
Gearbox (Removal - Refitting)
21
Remove gear control, bolt (F). Special notes for the F engine
Under the vehicle, remove the 2 mounting bolts
(B) from the power assisted steering pipe clamps.
Disconnect:
- the wires from the starter motor,
- the reversing light switch,
- the speedo cable.
Remove the engine/gearbox mounting nut. F
engine
98749R1
Remove the 2 bolts (H) from the engine-gearbox
tie-rod.
98902R
Slacken the 2 mounting bolts (C) on the engine
from the engine-gearbox tie-rod.
85812-1R
85966R1
21-13

MANUAL GEARBOX
Gearbox (Removal - Refitting)
21
Remove :
- the air filter sleeve,
- the tie-rod from the shock absorber turret,
- the clutch cable. Slacken but do not remove bolt (B) then remove
mounting bolt (C) from the suspended engine
mounting rod.F
engine
99309R
Remove the rear mounting.
Remove shock absorber actuator (on version F8Q).
Remove :
- the expansion bottle,
- the air filter mounting.
Release the wiring.
89204S
Position the engine support tool and take the
weight of the engine and transmission assembly.
98750S
99213S
21-14

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