Delta Renovation Kit - 600 Series Tub & Shower in Stainless RP54870SS

I rebuilt our 1987 acrylic knob Series 600 shower valve using the RP54870 Conversion Kit (in Chrome finish). As per "Chris H" review, I had also bought an RP77739A kit "just in case", as we had the diamond-shaped stem that he mentions. However, I found we did not need the additional kit to complete our repair as the ball included in the RP54870 Kit worked just fine for our application. A note of caution - many people have posted online about how they broke the shower valve body when attempting to remove the old Cap Assembly (5) because it was stuck. Apparently it's not difficult to twist and break or distort some hidden tubes which are part of the valve body inside the wall. I was fortunately able to unscrew our Cap Assembly quite easily. In fact, I checked it by giving it a quarter turn before ordering new parts. Once the parts arrived, I shut off the water supply and carefully disassembled everything. After disassembly, I wiped down and inspected the metal valve body, including two (stainless steel?) sleeves in the body which house the Seats and Springs (10). I checked for burrs, scratches, deposits, corrosion, or foreign matter. I removed some minor mineral deposits on the exterior threads by wiping them with a cloth. I applied plumber's grease to all new rubber parts, including the Seats and Springs (10). I carefully inspected them after installing to make sure they were fully inserted into the sleeves before attempting the next step. I fit the included Conversion Ball (8) with the 4 Holes (Up) and the Large Single Hole (Down), just as the instructions illustrate. When installing the new Cam and Lip seal (9) over the Conversion Ball, I found that the dark gray plastic seal housing had to be oriented properly to match a raised rib on the plastic with a slot on the right side of the metal valve body's threaded section. Following reassembly, the refurbished valve works very well. It operates smoothly and allows us to select a broad range of temperatures. Hopefully we can enjoy good service for a few more decades now.

Had plumber install. So far sogood