How do I replace a Delta shower faucet with a new one?

there are several videos online. here is one.


Delta Replacing Delta Tub Shower Cartridge

spray spray spraay with wd-40 let sit spray again

Sounds like someone did not remove the plastic valve assembly before soldering the valve body to the copper piping.
That or the valve body needs cleaned out. It is common for debris to get knocked lose when doing installations on old plumbing.

the shower valve is leaking and filling the shower spout

It should be compable with a new delta if you replace it with one or you can get washers to rebuild it yourself. Delta are a real good faucet.

find the set screw on the handle loosen and remove handle, remove locking ring (a tool to do this comes with the replacement kit that you can buy from hardware store) remove the ball. You now have access to the washers and springs remove old washers and springs install new. reassemble in reverse. make sure not to overtighten locking ring.

You may want to replace the ball or cartridge whichever the case may be. Also be sure to use Genuine Delta parts as they will hold up much better than the aftermarket parts. I hope this helps.

well the Diverter is not working it dose not matter the distance. when applied it should shoot the water to shower or tub if not working will come both.

you must be missing a washer or gasket that goes in the hose end, of the hose try teflon tape,this is all your plumber is going to do.

call delta and describe the round plate and the screw locatios. they can identify model. you need a new cartridge they costs $25-60. They may send to you for free.