| | Test results |
| 1 | INTERFERENCE CHECK | All OK | Problems encountered | Operation |
|---|
| Check for possible interference between the seat lifting adjustment components that could create noise/creaking (cover, lever, ratchet(s), linkage). | Move on to Step 2 | Presence of noise/creaking through contact/interference between seat lifting components. | Move the parts in contact apart and, if necessary, lubricate the linkage where the creaking is located. | Do not lubricate the ratchet. |
|
| 2 | CHECK ON FRAME RATCHET ASSEMBLY | All OK | Problems encountered | Operation |
|---|
| Check that the ratchet(s) and frame are correctly assembled. | Move on to Step 3 | Presence of noise between lever(s) and ratchet(s) and between ratchet(s) and frame as a result of loose fastening. | Retighten the badly fastened components to the correct torque or those with clearance. |
| 3 | CHECK THAT THERE IS NO NOISE FROM THE RATCHET | All OK | Problems encountered | Operation |
|---|
| Check for noise from the ratchet(s) and the frame in static and dynamic conditions (with or without the adjustment of the seat). | Move on to Step 4 | 1. Noise at the ratchet2. Presence of noise at the linkage or at the torsion bar. | 1. Replace the ratchet(s).Op. 7045A36 2. Lubricate parts in contact or renew welding. |
| 4 | CORRECT OPERATION CHECK | All OK | Problems encountered | Operation |
|---|
| Check that the fault is no longer present. | End of diagnosis | The fault persists | Replace the seat frame.Op. 7045A86 |