| | Results of the tests |
| 0 | FIRST CHECK | All OK | Problems met | Operation |
|---|
| Whilst
driving, steer to the right or the left and check the onset of the
noise. | Continue to Step 3 | Noise does not vary with
the steering angle | Continue to Step 1 |
| Noise varies with the steering angle | Continue to Step 2 |
| 1 | DIFFERENTIAL CHECK | All OK | Problems met | Operation |
|---|
| Check
the differential: In particular, check the bearings | Continue to Step 3 | Bearings damaged | Replace the bearings Op. 2110D26 |
| Internal gears worn or damaged | Overhaul or replace the differential housing Op. 2110D10 |
| 2 | JOINTS CHECK | All OK | Problems met | Operation |
|---|
| Check
the transmission joints | Continue to Step 3 | Wheel side joint damaged | Replace the joint Op. 2710A54 |
| Differential side joint damaged | Replace the joint Op. 2710A52 |
| 3 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
|---|
| Check
that the fault is no longer present | | Fault persists | Search for the fault starting from another symptom' |