A noise during use of the machine can be caused by several factors, first of all it is important to understand where it comes from:

• Electric brake;

• Motor;

• Bearings;

• Differential.

Note: If a part of the drive unit makes noise, it could also generate heat; To understand where the sound is coming from, try checking if there is a particular part that is overheating (always pay close attention when doing these checks: wear PPE and make sure the machine cannot move accidentally).