Triumph TR 7 Cabriolet Workshop Manuals
If you have to execute fixes on your own Triumph TR 7 Cabriolet then it is usually a good idea to have a Workshop Manual to keep just for a guide if you need to know tips on how to take out a certain component including Drive Shaft and match it again effectively.
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Triumph TR 7 Cabriolet Workshop Manuals will give precise diagnostic guides for the car so if something is not working it will help you identify what the issue is and methods to correct it. You can then decide if you can do this on your own or in case the job is just too big you could book your TR 7 Cabriolet in to a decent mechanic.