Another approach is to put a kit in them. I use these same valves in my car wash, albeit 24v ac instead of 12v dc. The only difference is the coil.
Take them off the coach, take the nut off the top stem, and remove the coil. Pay attention to the metal washer and rubber washer under the coil, so you can reassemble them correctly. These solenoids are directional with an arrow, which should be pointed toward the open discharge port.
If you don't want to cut the wires and re-splice them, take off the nut, then the coil and set it aside. Don't forget about the two washers.
Clamp the base in a vice securely but don't crush it. There is a screwdriver slot in the top that's for unscrewing the stem. Often not enough force can be applied to the stem with only a screwdriver. Use Channelocks on the shank of the stem and screwdriver on top at the same time to twist it. Once the stem is removed, you will find a spring and rubber tipped pintle in the stem, if it hasn't fallen out during disassembly. Plus a thin O ring.
Look into the base to make sure the seat has not partly eroded. This is a lot like the old sink faucets that had the replaceable seats that eroded away. Also, look at the rubber seat on the pintle. Make sure it has a nice even circular imprint from the seat. If it is incomplete, the seat will need closer inspection. Sometimes foreign material might get lodged on the pintle, whereas removing the object may solve the air leak. If the seat is eroded, you will need a new assembly, around $50. If it looks good, install a kit ($17) from these folks.
https://www.kleen-ritecorp.com/p-289...FU-TfgodKX4ABQ
Kleenex-Rite is a reputable supplier. If you need an assembly, you might not be able to get it from them, as they only stock the 24v ac coil. If you need one, email me at my user name, with @msn.com on the end. I will call them and spec a 12v dc coil for you, or you can just use the old coil.
Linear Mode
