2004 DACIA SUPERNOVA clutch

20
CLUTCH
The gears cannot be coupled
-stopped car
-e ngin e working
The opera tion of the
clutch is checked
Sticking clutch
The clutch is unstuck
The selection
steering is checked
The selection
steering is adjusted
The state of the steering
elemen ts is checked
The fau lty parts are
replacedThe g earbox is checked


CONFORMING

CONFORMING

CONFORMING

NON-
CONFORMING

NON-
CONFORMING

NON-
CONFORMING

D I A G N O STIC

20 - 7
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20
CLUTCH
Trepidation
(t he car starts “by fits”)
The sta te of the props
of the gearbox is checked
Oiled clutch, or clutch hav-
ing a beat
The fau lty parts are replaced.
The o rigin of the beat is elimi-
nated.
The pr ops are replaced and the tight-
ening of the gearbox fixing spots on
the engine is checked, and also the
fixing of the engine
Clutch pedal has a “creak”
The axis of the clutch
pedal is oiled
Pedal axis worn-out
The fau lty parts are replaced
NON-CONFORMING



NON-
CONFORMING

CONFORMING



D I A G N O STIC
20 - 8
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20
CLUTCH
CLUTCH DISC MECHANISM
REPLACEMENT
This operation is done after taking apart the engine - gearbox ensemble and after
their separation.
The stopping sector MOT 582 is mounted.
The screws fixi ng th e mechan ism are taken off.
The mechan ism and the clutch disc are taken apart.
Visual inspection is done: - wear of engi ne flywheel;
- co ndition of the starter crown;
- watertightness at the level of the crankshaft fitting;
- co ndition of the flywheel surface (it must not have scratches).
The fau lty parts are replaced and the grooves of the clutch shaft are cleaned.
SPECIAL DEVICES
MOT 582 Flywheel immobilizing sector
AMB 1518 Clutch centering device
TIGHTENING COUPLES (daNm)
Clutch mechanism screws 2
20 - 9
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20
CLUTCH
The clutch disc is mounted with the A damping flange towards the gearbox
The clutch d isc is centered with the AMB 1518 centering device
The clutch mech anism is mounted;
Th e fixing screws are progressively put on the thread of the mechanism, then they are tight-
ened to the couple;
The MOT 582 fly wheel-stopping sector is taken off.
CLUTCH DISC MECHANISM
20 - 10
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CV JH3 - 05021
MANUAL GEARBOX
21 - 3
TIGHTENING MOMENTS
DESCRIPTION
A
ttachment screws of the mechanism crankcase on the clutch –
di fferential case
S econdary shaft screw
Primary shaft nut
Back cap fixing screws
Oil draining plug
R everse driving contact
S crews for fixing the bellows – left transmission cap assembly
Screws for fixing gearbox on engine case (M10 – 90)
Screws for fixing gearbox on engine case (M10 – 35)
S crews for fixing gearbox on engine
LOCTOU fixing screw
Screws for fixing the RPM sensor on the clutch c ase
S crews for fixing the control axle assembly
S crews for fixing hydraulic receiver on clutch case MOMENT
(daNm)
2,57
19
2,5
2,5
2,5
2,5
4,4
2,1
4,4
0,5
0,8 2
2,1
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CV JH3 - 05021
MANUAL GEARBOX
21 - 6
PARTICULARITIES
The gears grid is similar to that of the gearboxes previously mounted on the DACIA
SupeRNova vehicles, the only difference being the reverse driving, which is located on the right
s ide and backwards.
The synchronizers are BORG – WARNER type.
The synchronizing hub – sliding collar, and the synchronizing hub – shaft assemblies are com-
posed of matching parts . The synchronizing hubs are freely mounted on the secondary shaft and are maintained axially
through safety devices of the ring type. The cylindrical moment of the differential is not adjustable.
The differential assembly is supported on the gearbox crankcases by means of the bearings.
The primary and secondary shafts support at the clutch side is done by means of roll – bear-
ings, which get into direct contact with the shaft (the bearings do not have inner ring, its purpose
being taken over by the shafts). The reverse driving pinion is delivered mounted on the shaft. PARTICULARITIES
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CV JH3 - 05021
MANUAL GEARBOX
21 - 9
N
ECESSARY SPECIAL TOOLS
C. V. 22-01 Bearings extractor body
C. V. 945 Chuck for mounting the right planetary pinion oil ring
C. V. 946 Chuck for safety mounting
C. V. 551 Device for mounting/dismounting bearings of mechanism casing
C. V. 949 Device for mounting and taking apart the elastic pins of the forks
C. V. 1000 Extractor for the fi xed pinion of the 5 th step of the secondary shaft
C. V. 1059 Bushing kit for mounting/dismounting the differential bearings
C. V. 1 170 Hub extractor of the 5 th step on the primary shaft
C. V. 1 175 Screw for mounting the fixed pinion 5 th step
C. V. 552 Device for e xtracti ng the bearing of the secondary shaft on the
clutch – differential crankcase.
C. V. 31-01 Set of punches for elastic pins F 5
C. V. 1 162 Chuck for replacing command axle bushings
C. V. 553 Device for dismounting – remounting the clutch shaft bearing
C. V. 554 Bushing for depressing the differential case assembly from the
differential crankcase.
SPECIAL TOOLS
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CV JH3 - 05021
MANUAL GEARBOX
21 - 14
THE PRIMARY SHAFT
The primary shaft shall not be repaired and is not adjustable.
The shaft has a spry nozzle (B) which cannot be dismounted.
Clean the oiling – groove of the 5 th step
The oil seal ring in front of the shaft and the bearing cams are in direct contact with the shaft.
Check the state of the shaft in the opera tion area ( A) of the oil seal; ring, a nd if this shows
ridges or irregularities, it will be replaced.
REPLACING THE B EARINGS OF T HE PRIMARY SHAFT
The bearings of the primary shaft are freely mounted on it.
There are two types of bearings:
- a cylindrical one with balls , pressed into the crankcase of the mechanism;
- a cylindrical one with rolls , pressed into the crankcase of the clutch-differential, together
with the clutch shaft oil seal ring.
T he bearings replacement is performed only with identical bearings with the original ones.
GEARBOX DISMOUNTING
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