| | Results of the tests |
| 1 | CHECK THAT THE HANDBRAKE IS CORRECTLY ADJUSTED | All OK | Problems encountered | Operation |
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| Check that the handbrake cable is correctly adjusted Op. 3380A04 HANDBRAKE - ADJUST TRAVEL if it is short, before carrying out the adjustment, check the position of the levers in the drum (max. difference 2 mm) | Move on to Step 2 | Short adjustment of handbrake lever | Adjust the handbrake lever correctly Op. 3380A04 HANDBRAKE - ADJUST TRAVEL |
| 2 | CHECK THE OPERATION OF THE HANDBRAKE LEVER | All OK | Problems encountered | Operation |
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| After having removed the drum check the operation of the handbrake lever | Move on to Step 3 | The handbrake lever does not return to the rest position in contact with the shoe | Replace the secondary shoe |
| 3 | CHECK ON CORRECT OPERATION | All OK | Problems encountered | Operation |
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| Check that the fault is no longer present | End of diagnosis | The fault is still present | Search for the cause of the problem in the lever traction system (cables, lever adjustment systems on vehicle) |