Dacia Pick-Up 1304/1305/1307. Service manual - part 51

MANUAL GEARBOX

21 - 10

TIGHTENING MOMENTS

ADJUSTEMENT VALUES

Distance between the conical gears: 59 mm.
Differential gear bearings pre-tightening : - reused bearings : free, without clearance;

- new bearings : 1-3 daN.

Gear teeth clearance: 0,12- 0,25 mm;
Clearance in differential gear: max. 0,1mm

IGH TENING

MO MENTS

(daNm)

- Half crankcases assembling screws :

* M7............................................................................................. 1,9 - 2,4
* M8............................................................................................. 2,8 - 3,3

- Back cap attachment screws.................................................................. 1 - 1,4
- Clutch housing attachment screws:

* M8............................................................................................... 2 - 2,8
* M10............................................................................................. 3,2 - 4

- Reverse drive selector shaft nut

............................................................ 2 - 2,5

- Crown attachment screws...................................................................... 9 - 11
- Speedometer endless screws............................................................... 10 - 12
- Primary shaft nut.................................................................................. 6
- Differential gear nut lock screws

.......................................................... 2,4

- Filling or emptying plug...................................................................... 2 - 2,8
- Lock nut of the speedometer fixing screw

..................................... 0,1 - 0,3

- Backing contactor................................................................................. 2 - 3
- Base plate attachment screws :

* M6................................................................................................ 1 - 1,4
* M7................................................................................................ 1 - 1,4

- Breather valve...................................................................................... 1 - 1,9
- Shifter shaft nut

..................

.................................................................... 4 - 4,5

- Plug M16.............................................................................................. 1 - 1,5
- Secondary shaft flange nut

........

........................................................... 10 - 12

- 4X4 differential flange attachment M8 screws.................................... 2 - 2,8
- 4X4 differential cap attachments M7 screws

........................................ 1 - 1,4

MANUAL GEARBOX

21 - 11

INGREDIENTS

MATERIALS

Parts that are to be obligatory replaced, if they were dismounted: paper gaskets,

annular oil rings, toothed crown attachment screws, speedometer endless screw, elastic
pins, primary shaft nut, secondary shaft nut, reverse selector shaft nut, shifter shaft nut.

ATERIALS

80W/90;

API GL 5 Oil

Parts lubrication upon mounting

LOCTITE 518

Sealing : half crankcases, clutch casing, flange od
differential hub (4x4)

RHODORSEAL 5661

Transmissions pins sealing

LOCTITE 577

Backing selector; plug M 16

Grease

UM 170 Li Ca Pb 2M

Lubrication of knuckles and contact parts.

MAINTENANCE

The maintenance of the 365,50 C, 51 C type gearboxes consists in repeatedly

performing certain revisions, according to the performed mileage as mentioned bellow:

- gearbox oil replacement : is done after covering the first 800 – 1000 km and than

periodically, every 20.000 km;
- checking of gearbox oil level – periodically, every 5000 km.

The oil in the gearbox is replaced
through the emptying (B) and filling (A)
plugs.

The oil in the gearbox should reach the

level of the orifice uncovered by the
filling plug (A).

If the level is lower than that, add oil

until it starts flowing through the orifice.

The plugs are tightened according to

the required moment (2,4 daNm).

MANUAL GEARBOX

21 - 12

DISMOUNTING - REMOUNTING

GEARBOX DISMOUNTING – REMOUNTING FROM THE VEHICLE

NOTE: For the vehicles equipped with injection system ,first dismount RPM

transducer attached on the clutch casing, to avoid its damaging during gearbox
dismounting.

Disconnect the battery.
Disconnect:

-starter power cable;
-supply wire of cutting relay.

Unscrew the three attachment screws of

the starter shield.

Take out the starter, by drawing it along

the shaft.

Unscrew the attachment screws of the

gearbox upper part on the engine block.

Dismount the clutch cable.
Mount the crossbar TF 509, for maintaining

the half front axe, between the shock absorber
and the suspension lower arm shaft
(GB 365,GB 51 C).

Place the vehicle on the elevator and lift

it.

Drain the oil from the gearbox by unscrewing

the threaded plug and recover it.

Dismount the front wheels.
Dismount the transmission lock pins, by

means of the GB 31 B mandrel.

Dismount by means of the TF 476 extractor:

- the steering joint;
- the upper suspension joint.

Rock the steering knuckle support and take

out the transmission off the propeller shaft.

Perform the same operations for the other

side of the car.

MANUAL GEARBOX

21 - 13

DISMOUNTING - REMOUNTING

Disconnect the vacuum hoses and the

electrical connector of the vacuum capsule
(G.B. 51 C).

Dismount the 4 attachment screws of

the secondary shaft flange and rock the
transmission (G.B. 51 C; 50 C).

Disconnect the speed gear control by

unscrewing the control auxiliary rod
screws.

Unscrew the attachment nut of the

exhaust pipe.

Disconnect the backward driving

contact wire.

Disconnect the speedometer cable.
Lift the back part of the gearbox by

means of a jack.

Dismount :
- the three crossbar attachment screws

to the gearbox.

- the two crossbar attachment nuts to

the longitudinal girders.

Dismount the crossbar.
Dismount the clutch protection plate.
Dismount the two nuts attachment gear

box.

Take out the box drawing it backwards.

When dismounting the gearbox, pay
attention not to catch the clutch mechanism.

Content .. 49 50 51 52 ..