Leaking bath tub tap, the pipe that the washer closes on has a crack in it, anyway to fix or replace tap set?

Rico has sort of got it; look at the hole where the water goes through the seat; if it is square or hexagonal, the seat can be replaced. (You might need to dig some of the minerals off to see). The hexagonal ones can be removed with allan wrenches. Some of the square ones can be removed using the square shaft from the old-style doorknobs. Some of them come out using the extension on a 1/4'; drive socket wrench (no socket) you can also use the tapered square shank of one of the old-style bits that go in a brace; just shove it into the hole firmly and turn the bit with water pump pliers. Other wise you'll need to get the special L-shaped wrench with 3 sizes of square and 3 sizes of hexagonal on each end (only a few $). When removing, make certian to get all the minerals off first and be certian to use the largest part of the wrench that will fit into the hole or it will strip when you try to remove it. The seats only cost a dollar or so unless it is a very wierd style. When you go to the store, be certian to take the old seat with you as there are about 100 slightly different types! You are better off going to a well-stocked neighboorhood hardware store where the guy will actually spend the time to help you find the correct part. While you're there, get 2, as the other one will probably go bad soon.Leaking bath tub tap, the pipe that the washer closes on has a crack in it, anyway to fix or replace tap set?
In some more expensive units the seat is removable, it scrws in. However, in most types, if the washer seat is cracked it means major removal and replacement.Leaking bath tub tap, the pipe that the washer closes on has a crack in it, anyway to fix or replace tap set?
I don't know what tap set means but if pipe has crack and its leaking....replace pipe
Sounds like you will have to replace the pipe. You will have to get behind the tub to take it apart. It's going to be a lot of work. If you don't fix it you could have bigger problems like termites and rot.