Dacia SuperNova (engine E7J). Instruction - page 65

31

FRONT BEARING ELEMENTS

31 - 1

CHARACTERISTICS

The front axle is composed of two joint half axles with independents wheels, designed for the

suspension type Mc.Pherson.

The joints of front half axle arm are done by means of an elastic bearing (chassis side) and

by means of a suspension ball joint (wheel side)

The transmission of the motion to the wheels is done by means of two planetary axles, not

equal, with homocinetic tripod joints.

The wheel hub is assembled in the steering knuckle by means of a preset and sealed

bearing.

The brake disks are aerated.

Tightening moments (daNm)

Wheel attachment screw

7,5

Suspension arm shaft nuts

7,5

Attachment nut of the ball joint screw

5,5

The nut of the attachment screw of the steering
knuckle with the shock absorber

7,5

Transmission nut

21,0

Steering ball joint nut

4,0

The attachment anti roll bar nut

2,5

The connecting strap screw

2,7

The attachment screw of the suspension ball joint on the arm

7,5

The attachment screws of the disk on the hub

2,5

Aux.connecting rod- assembled connecting rod end stop nut

5,0

Assembled connecting rod end- rack joind body

5,0

31

FRONT BEARING ELEMENTS

31 - 2

Tightening moments (daNm)

Wheels attachment screws

7,5

Suspension arm shaft nuts

7,5

Attachment nut of the ball joint screw

5,5

Anti – roll bar bearings nuts

2,5

Ball joint attachment screws nuts on the arm

7,5

Strap screw

2,7

SUSPENSION ARM

NOTE
The dismounting-remounting operations are identical for both half axles.

DISMOUNTING

Lift the vehicle on an elevator with two columns.
Dismount the two wheels.
Loosen the attachment nuts (1) of the anti roll bar on the suspension arms.
Detach downward the anti roll bar.
Dismount :

- the suspension upper ball joint screw (2) and nut on the steering knuckle;
- the strap screw ;
- the nuts (3) and the arm attachment axles on the frame ;
- the arms.

31

FRONT BEARING ELEMENTS

31 - 3

SUSPENSION ARM

RE MOUNTING

NOTE :
Ensure the presence of the protection plate (A) on the suspension ball joint axle.

Perform the operations in following sequence:

- position the arm to the chassis without tightening the axles nuts (3) .
- mount the ball joint in the steering knuckle
- fix the attachment screw and tighten its nut at the required moment ;

Mount the wheel the with the vehicle on wheels continue with:

- remounting the anti roll bar by tightening at the required moment the attachment screws.
- tightening of the shaft arm nuts and fixing the strap to the upper part..

The tightening to the required moment of the elastic bushings of the suspension arms is

performed observing the value H1 – H2 = 80 mm.

31

FRONT BEARING ELEMENTS

31 - 4

ELASTIC BUSHINGS OF THE SUSPENSION ARM

SPECIAL TOOLS

P.F. 601

Mounting bushings device

P.F. 602

Bushing extractor

REPLACEMENT

This operation implies bushings replacement one by one, in order to maintain their centering

as to the arm shaft.

Dismount one of the bushings, by means of the TF 602 device, using a 31-mm outside diam-

eter rod.

Mount the new bushing, observing the value A =239 +/- 0,5 mm.
Dismount the other bushing, proceeding in the same shown way, in order to maintain the value

A =.239 +/- 0,5 mm

Mounting of the elastic bushings is performed by means of the device TF 601.

Рассказать друзьям