|  |  | Results of the tests | 
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation | 
|---|
|  | Check
that the clutch releases properly: with the engine running, press
the clutch pedal and engage a gear | Continue to Step 1 | The gearbox always grates
in any gear: the clutch does not disengage | See table   E01  CLUTCH NOT RELEASING CORRECTLY | 
| 1 | CHECK ON SYNCHRONIZER RINGS | All OK | Problems met | Operation | 
|---|
|  | Overhaul
the gearbox  Op.   2110B20   . In particular, check the synchronizer
rings: they should not show signs of wear on the internal surfaces. | Continue to Step 2 | Seals worn | Replace the synchronizers  Op.   2110B20 | 
| 2 | 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' |