If you choose to undertake auto repairs to your Ural M 66 then it is usually a good plan to own a Workshop Manual for reference in the event that you need to know simple methods to strip off a certain part for example Drive Shaft and fit it again successfully.
Ural M 66 Workshop Manuals provide you with targeted diagnostic wisdom for your car so if something is not working it can help you identify what the situation is and ways to repair it. Then you are able to analyse if this can be achieved on your own or in case the job is just too big you can make a booking for your M 66 in with a decent garage.
Ural M 66 manual