Greetings
One picture is worth a thousand words.
This is how many words are needed to describe the number of ways to dismantle the 3 main types of "old fashioned" tap.
This really is a case of doing things the old fashioned way.......go to the library, borrow a diy manual and get stuck in.
Good luck, persevere and reassemble with Vaseline so as not to affect the water.
Cheers
Ian
Ian, August 2016