Can someone help me get some part numbers or let me know if I should just get a new one? Not sure if it's the back seals or cartridge?
Delta single handle leaks when the water is on. The faucet does not leak when the handle is off. Home was built in 2000.
Listen go to any good hardware store. and buy a set of delta repair faucet set that includes all the o rings, seat cups, special tool for delta and lub. Then shut off the water undo large nut, the undo plastic washer. and replace all the parts i mention , then reassemble. I bet that delta even has a video .
Most of the repair kits come in clear packaging.
Take your valve guts apart, lay them neatly out, take some good pics, and buy a kit that has those same parts.
Or just buy two or three kits if the parts inside look different.
Sometimes the springs are longer or stubbier.
Usually there are some big o rings you won’t need.
Bring back any unopened kits.
Better having more parts than being short on something you need, and having to make more trips.
Time is money. Or aggravation.
While the house water is off.
Look for kits with a stainless ball, not brass or plastic.
And clean out the empty valve body with vinegar and paper towels, then rinse with water.
And goop up the rubber boots inside and out with thin coat of silicone valve grease, and put some in the holes that receive the boots and springs, to hold them in there during assembly.
And COVER THE DRAIN!
Delta CSR Frank verified I have a 600 series shower and RP3614 kit should fix it. He wasn't nice enough to send the parts for free like I've read on amazon. So I bought the kit and received RP3614A. I could hand loosen the large nut so that wasn't an issue nor was replacing the parts. But when I turned the water back on it leaked just the same. I ended up swapping parts plus the ball from another shower and after about 50 trips up and down the stairs I gave up and started getting ready to post here and write Delta back (hours wait on phone and days for email). The parts from the leaky faucet were fine on the other shower but its parts didn't help. I came across a Q/A on Delta's site that said the new gray cam does not work with the old white adjusting nut and to remove it. I noticed where the white nut was originally wouldn't let the large nut tighten very far and would get a leak out the front if tight but out the back if loose.
So I took the white nut off, soaked/brass wire brushed the large nut/pipe threads with vinegar, and put teflon tape on the pipe threads. No leak. The handle is a bit wobblier but stay put ok. Not sure why it needed the teflon tape or leaked at all but maybe something was machined weird originally. Hopefully that'll do it. Thanks for the help!
I used the "triangleish" gray cam but boy is it loose. I see on this kit: Renovation Kit - 600 Series Tub & Shower RP54870 | Delta Faucet it comes with more of a "light switch" shaped cam which did come in the kit I bought w/ the wrench. It's possible my old parts would be fine with some teflon tape on the threads too. I might mess around with it if it bugs me.