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

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.

Op. 4420A12 REAR SUSPENSION DAMPER (ONE), LH OR RH - FOR MCPHERSON STRUT SYSTEM - INCLUDES DISMENTLING/REBUILDING OF ASSEMBLY AT BENCH R R

Check that there are no signs of interference between the suspension elements or between the latter and the bodyshell.

In particular, check that there are no signs of wear on the suspension springs and that they do not show signs of abrasion

Replace the spring Op.

Op. 4420A12 REAR SUSPENSION DAMPER (ONE), LH OR RH - FOR MCPHERSON STRUT SYSTEM - INCLUDES DISMENTLING/REBUILDING OF ASSEMBLY AT BENCH R R

taking care to fit it correctly

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 Verifiche corretti serraggi sospensioni posteriori

Of the bolts fixing:

• longitudinal anchorage strut bushes to the hub;
• longitudinal anchorage strut bushes to the bodyshell;
• bushes for front/rear track control arms to the shock absorber;
• bushes for front/rear track control arms to the crossmember;
• shock absorber to steering knuckle lower fastenings;
• brake caliper to steering knuckle fastenings;
• brake disc shield fastenings;
• anti-roll bar to crossmember fastenings;
• crossmember to bodyshell fastenings;
• stub axle to hub upper/lower fastenings.
• connecting rod between anti-roll bar and shock absorber fastenings.

Check that there is no clearance between the front and rear track control arms and the crossmember.

Also check the condition of the suspension bushes.

Removing the protection for the fastening on the bodyshell side for the longitudinal anchorage strut

Check that:

• there is no clearance between the anchorage strut and the bodyshell;
• there are no glycol leaks from the bush secured to the bodyshell;
• the rubber part of the bush, on the fastening securing the strut to the hub, is not detached from the steel outer casing.

When the luggage compartment interior lining side panels are removed following the

Op. 7040B06

Check the tightening torques for the following bolts:

• shock absorber to turret upper fastening;
• damping plate to shock absorber fastening.

The shock absorber must be removed in order to carry out this check

Op. 4420A10 L/H OR R/H REAR SUSPENSION SPRING/DAMPER UNIT (ONE) R+R

, then check the condition of the shock absorber mounting on the turret.