The Crane Synchronisation menu is protected by a PIN number to prevent unauthorised or untrained access. It is highly recommended that only trained personnel perform crane synchronisation.
Crane synchronisation is the process of matching the speed of the front and rear cranes in Low Speed only. If they are "out of sync", one function will appear to move faster than the other.
The cranes are synchronised before the trailer leaves the factory. However, if you notice that the cranes are operating at different speeds, it is possible to synchronise the cranes again by following the procedure below. This is not uncommon after about 50 hours of use, by which time the hydraulics have bedded in a little.