If you wish to carry out maintenance tasks on your own CCM R30 then it is always a great idea to have a Workshop Manual to use as a reference if perhaps you want to know easy methods to take off a certain component including Brake Discs and match it again in the correct way.
CCM R30 Workshop Manuals provide you with precise diagnostic details on your vehicle therefore if something is playing up it helps you find out what the situation is and the best way to resolve it. After that you can assess if this can be done by yourself or if ever the job is simply too big you can still book your R30 right into a decent repair garage.
CCM R30 manual