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
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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.
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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.
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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.