manual transmission DACIA SUPERNOVA 2004 Repair Manual

21 MANUAL GEARBOXSecti ons.......................................................... 21-1
Identification ................................................. 21-2
Tightening moments...................................... 21-3
Ratios ............................................................ 21-4
Capacity, lubricants....................................... 21-5
Particul arities................................................. 21-6
Ingredie nts..................................................... 21-7
Parts of systema tic replacement.................... 21-8
S pecial tools.................................................. 21-9
Gearbox dismounting ................................... 21-10
29 DRIVE SHAFTS Front transversa l transmission........................ 29-1
Bell ows - Be aring assembly to
t he gearbox.................................................... 29-4
Bell ows to wheel........................................... 29-7
Be llows to gearbox....................................... 29-12
Bell ows to wheel........................................... 29-15
30 GENERAL General principle sc hedule
of the brake circuit........................................ 30-1
Tightening moments...................................... 30-2
Com position and dimensions
of the ma in braking system elements............ 30-6
Br aking system diagnostic............................ 30-7
Br ake connections and se werage.................. 30-12
Br ake fluid.................................................... 30-13
Br aking circuit purging................................. 30-14
The inf luence of the front axle angle s on
t he road behaivior (vehicle comportment)
and on tyres wear........................................... 30-16
Prelimi nary checking..................................... 30-17
C hecking of the front axles adjustment......... 30-19
31 FRONT BEARING ELEMENTS Characteristics... .......................................... 31-1
Sus pension arm... .......................................... 31-2
Elastic bushings of suspension arm............... 31-4
Sus pension ball joint..................................... 31-5
Br ake gaskets................................................ 31-6
Br ake caliper................................................. 31-7
Br ake disk..................................................... 31-9
St eering knuckle............................................ 31-10
St eering knuckle bearing. .............................. 31-12
Fr ont suspension............................................ 31-13
Shock absor ber, Sprint. ................................. 31-14
Sp ring assembly shock absorber................... 31-15
Anti-roll bar................................................... 31-17
33 REAR BEARING ELEMENTS Characteristics............................................... 33-1
Rear axle....................................................... 33-2 Re
ar suspension............................................ 33-4
Shock absorber............................................. 33-5
Spring ........................................................... 33-6
Br ake drum................................................... 33-7
Br ake cylinder.............................................. 33-8
Br ake shoes.................................................. 33-10
Be aring (25 x 52 x 37)................................ 33-12
35 WHEELS AND TYRES Characteristics.............................................. 35-1
Wheels balancing......................................... 35–4
36 STEERING ASSEMBLY Axial ball joint............................................. 36-1
Steering box................................................. 36-3
Pus her........................................................... 36-4
Noise absorber bearing................................. 36-5
Bell ows......................................................... 36-6
Deformable lower shaft................................ 36-7
Ste ering weel position adjustment................ 36-9
37 MECHANICAL ELEMENTS CONTROLS Brake pump.................................................. 37-1
Servobrake................................................... 37-6
Air filter – se rvobrake reta iner valve........... 37-9
Handbrake adjustment.................................. 37-10
Handbrake control lever............................... 37-11
Handbrake secondary cable.......................... 37-12
Br ake flexible hoses..................................... 37-14
Br ake pressure controller.............................. 37-16
clutch hydraulic control................................ 37-19
The gear control........................................... 37-23
Pe dals support.............................................. 37-25
Acceleration pedal....................................... 37-26
Acceleration contr ol cable........................... 37-27
Transmission2
Chasis3
SION
LL
NT
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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 - 4
RATIOS
GEAR STEP
I II III IV V M.I.
NR.OF TEETH 41/11 43/21 39/28 35/34 31/39 39/11
RATIO 3.727 2.048 1.393 1.029 0.795 3.545
GB INDEX VEHICLE MAIN MILEAGE
TRANSMISSION GEARING
JH3-05 SupeRNova 15/56 21/19
RATIOS
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CV JH3 - 05021
MANUAL GEARBOX
21 - 20
The differential of the
JH3050 gearbox is the simple type (with two satellite s and two planetary
wheels, one of which making a common body with the tulip of the planetary transmission).
This differential is supported in the clutch – differential crankcase by means of two cylindrical
bearings equipped with balls of various sizes.
The two bearings are pressed in the clutch – differential crankcase.
The crown of the main transmission is assembled by hooping, on the differential crankcase.
DIFFERENTIAL DISMOUNTING
This operation is performed after separating the crankcases. The zero ring (1) is removed from the right planetary shaft, then by means of a pins extractor
and a hammer, the sealing gasket (2 ) is gently hit with a hammer in order to make it pivoting.
The oil seal ring is carefully pulled along the grooved part of the planetary pinion in order
not to deteriorate the grooves.
GEARBOX DISMOUNTING
DIFFE RENTIAL
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