Having carried out the road test, see the Table

S15 RUMOROSITA'' in condizioni di marcia

, there was a knocking noise from the back.

Continue depending on the circumstances in which the noise occurs

The noise disappears when the handbrake is operated

Op. 3380A04 HANDBRAKE - ADJUST TRAVEL

Raise the vehicle on a two column lift and check that there are no oil leaks from the shock absorber stem.

Slight dampness on the stem is considered normal because there is evaporation during the operation of the shock absorber.

If there is a persistent oil leak on the shock absorber stem, make sure that it is not coming from other parts of the vehicle that are lubricated

Replace the shock absorber

Op. 4420A30 REAR SUSPENSION SHOCK ABSORBER (ONE), LEFT OR RIGHT - R.R. - CHECK WHEEL GEOMETRY SEPARATELY

Replace the end of travel buffer

Op. 4420A40 L/H OR R/H REAR SUSPENSION COIL SPRING (ONE) - R+R

Locate the area of the possible noise source: top or bottom.

Starting from the area where the knocking was identified, check the tightening torques See Test

4420B

on non-shear bolts:

- upper shock absorber attachment to the body;

- lower shock absorber attachment to the knuckle;

- longitudinal arm to the knuckle;

- for the brake caliper to steering knuckle;

Visually inspect that the yield point type bolts have not loosened, the list is given below:

- beam fastening to the body;

- fastening of the antiroll bar to the beam;

- fastenings of the connection beam to the bar and knuckle;

- fastening of the longitudinal arm connection bracket to the body

- fastenings of the upper wishbone to the beam and knuckle;

- fastenings of the large lower wishbone to the beam and knuckle;

- fastenings of the small lower wishbone to the beam and knuckle;

- of the knuckle to the bearing.

Replacement of longitudinal arm

Op. 4420C30 L/H OR R/H REAR SUSPENSION TIE ROD (ONE) - R+R

Check for clearance in the upper wisbhone attachment to the knuckle and rear frame.

Also check the condition of the upper wishbone bushes.

Replacement of upper transverse arm

Op. 4420B35 REAR SUSPENSION UPPER SWINGING ARM, (ONE) LH OR RH - R R WITH CHECK OF WHEELS ATTITUDE APART

Check for clearance in the large lower wisbhone attachment to the knuckle and rear frame.

Also check the condition of the large lower wishbone bushes.

Replacing the large lower wishbone

Op. 4420B18 REAR SUSPENSION REAR WISHBONE (ONE) - R R

checking the camber values are correct

Op. 4450A40 REAR WHEEL GEOMETRY - CHECK USING OPTICAL EQUIPMENT, INCLUDES ADJUSTMENT IF NECESSARY

Check for clearance in the small lower wisbhone attachment to the knuckle and rear frame.

Also check the condition of the small lower wishbone bushes.

Replacing the small lower wishbone

Op. 4420B16 REAR SUSPENSION FRONT WISHBONE (ONE)- R R

checking the toe-in values are correct

Op. 4450A40 REAR WHEEL GEOMETRY - CHECK USING OPTICAL EQUIPMENT, INCLUDES ADJUSTMENT IF NECESSARY

Replace the anti-roll bar

Op. 4420C10 REAR SUSPENSION STABILIZER BAR - R+R