1 Operate hand brake once and release again.
2 Operate service brake, release and wait approx. 1 s. Apply hand brake with button pressed and release. Repeat the process 30 times.
Do not make any manual adjustments.
A clicking sound in the drums must be heard each time the service brake is operated.
3 Check that drum brake can move freely.
4 On completion of work, check braking power of service brake on brake test stand.
Differences in braking power above 20% are not permissible.