| | Results of the tests |
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation |
|---|
| Having
carried out the road test during the See table S15 RUMOROSITA' in condizioni di marcia , a creaking noise was noticed coming from
the front.Continue depending on the circumstances in which the noise occurs | End of diagnosis | The noise is produced
whilst steering, even with the vehicle stationary | Continue to Step 1 |
| The noise is produced whilst steering, even with the
vehicle stationary | Continue to Step 2 |
| 1 | MOVING MC PHERSON ELEMENTS CHECK | All OK | Problems met | Operation |
|---|
| Check
that the noise is not caused by the movement of the shock absorber
upper buffer | End of diagnosis | The buffer is loose | Tighten the upper nut
to torque so that the buffer no longer moves |
| 2 | DUST COVER CHECK | All OK | Problems met | Operation |
|---|
| Check
that the dust cover is not rubbing against the shock absorber casing,
by moving it pressing and releasing it above the shock absorber
casing | Continue to Step 3 | It is rubbing | Replace the end of travel
buffer |
| 3 | END OF TRAVEL BUFFER CHECK | All OK | Problems met | Operation |
|---|
| Check
that the end of travel buffer is correctly fitted in its seat, by
carrying out the See Test 4410AA Verifica corretto montaggio tampone di fine corsa su ammortizzatore anteriore | Continue to Step 4 | End of travel buffer not correctly
fitted | Refit
the buffer correctly |
| 4 | CHECKS IN THE ENGINE COMPARTMENT | All OK | Problems met | Operation |
|---|
| Check
that there are no pipes, cables, guards in the engine compartment
that could produce interference if the engine moves | Continue to Step 5 | Components incorrectly
positioned | Reposition the components correctly |
| 5 | UNDER FLOOR CHECKS | All OK | Problems met | Operation |
|---|
| Position
the vehicle on a two column lift and raise it.Check that the pipes or heat shields under the floor are not
the cause of any noise | Continue to Step 6 | Pipes or heat shields
not correctly fastened | Restore the correct fixing |
| 6 | THRUST WASHERS AND BUSHES CHECK | All OK | Problems met | Operation |
|---|
| Check
that there are no signs of rubbing between the suspension arm thrust
washers and bushes | Continue to Step 7 | There are signs of rubbing | Lubricate the elements with
graphite |
| 7 | ANTI-ROLL BAR CHECK | All OK | Problems met | Operation |
|---|
| Check
that the anti-roll bar is not faulty See Test 4410CA Verifiche sulla barra stabilizzatrice In particular: - That the anti-roll bar is correctly positioned in relation
to the vehicle centre line
- That there is no wear of the paint at the contact points
between the bar and the track control arms/shock absorbers
- The condition of the flexible mounting in the contact
area with the bar
- Fastenings to torque between the bar and chassis
- Fastenings to torque between the bar and shock absorber
mounting connecting rords
| Continue to Step 8 | Tightenings not to torque | Restore the correct tightening |
| Bar incorrectly positioned | Replace the anti-roll bar Op. 4410C10 |
| Wear of the paint at the contact points (rubbing between
bar-shock absorber or bar-suspension arm) | Replace the anti-roll bar Op. 4410C10 |
| Signs of tearing or damage to the flexible mounting | Replace the anti-roll bar Op. 4410C10 |
| 8 | SPRING/SHOCK ABSORBER ASSEMBLY
CHECK | All
OK | Problems
met | Operation |
|---|
| Check
that the mountings securing the suspension to the bodyshell (at
the shock absorber turrets) do not show signs of wear or rubbing.The shock absorber must be removed in order to check this condition
Op. 4410A12 .Also check that the positioning and fitting of the semi-corner
unit (spring-shock absorber assembly) is correct.Check that there are no signs of rubbing on the suspension spring
at its supports.Also check that the spring does not show signs of wear | If the spring shows signs of abrasions,
its mechanical properties could deteriorate as a result of oxidation |
| End of diagnosis | Semi-corner positioning
or fitting incorrect | Refit/reposition the components correctly |
| Signs of tearing/damage to the shock absorber mountings | Replace the components making sure they are correctly
positioned |
| Spring worn | Replace the shock absorber spring Op. 4410A12 |
| Signs of rubbing between the spring and its supports | Refit correctly |