Dacia SuperNova (engine E7J). Manual - part 51

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MANUAL GEARBOX

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Dismount the fixed pinion of the 5 th gear

by means of the C.V. 1000 extractor and
the body extractor C.V. 22 -01.

The hub of the 5 th step synchronizer is

extracted by means of the C.V. 1170 extractor.

Dismount the synchronizer ring of the 5

step, the inner bushing of the pinion, the pinion
and its supporting washer.

The gearbox is set in the dead point, then

engage the 3-d step.

Dismount the external screws fixing the

crankcase of the mechanisms and blocking
pin of the reverse driving pinion axle.

Dismount the reverse driving contact (B).

GEARBOX DISMOUNTING

C.V. 1170

C.V. 1000

C.V.  22 -01

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MANUAL GEARBOX

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In order to recover the balls and the locking

springs of the shafts, two magnets placed in the
C orifices are used.

Pull the control shaft towards exterior.
The crankcases are separated.
Rotate to the left the shaft – reverse driving

pinion assembly and dismount the control reverse
driving shaft velocity 5-th step.

Take out the fork pin 3-4 by means of the

C.V.  949 device and dismount the axle and
3-4 fork assembly.

Simultaneously, dismount the primary shaft

and secondary shaft assembly with the axle
and 1-2 fork.

Place vertically the  secondary shaft,  with

the pinion of the 1 step downwards, so that
the other pinions will not fall.

Recover the locking pins (A) and (B) of

the command axles.

GEARBOX DISMOUNTING

Easy lift the primary shaft and dismount the

shaft and reverse driving pinion assembly.

C.V. 1170

C.V.  94 9

A
B

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MANUAL GEARBOX

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  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 operation area (A) of the oil seal; ring, and if this shows

ridges or  irregularities, it will be replaced.

REPLACING THE BEARINGS OF THE 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.

The bearings replacement is performed only with identical bearings with the original ones.

GEARBOX DISMOUNTING

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MANUAL GEARBOX

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BEARING DISMOUNTING OF THE  MECHANISMS CRANKCASE

The safety ring of the bearing (the holding ring) is widened by means of a pair of safety

pincers, then the bearing is extracted from the crankcase by hammering towards the inside of the
mechanisms crankcase, by means of the C.V. 551 device.

BEARING REMOUNTING OF  THE MECHANISMS CRANKCASE

 

Replace the safety of the bearings with a new one, then it is introduced into its groove in the

mechanisms crankcase, so that it keeps its position as compared to the crankcase (the safety
shows a shoulder).

The bearing lying at the outside of the crankcase of the mechanism is pressed towards  the

inside of it, until the safety fits into the groove carved on the outer ring of the bearing.

Mounting the bearing is performed by  means of  the C.V. 551 device.

C.V.  551

GEARBOX DISMOUNTING