Texmextukin
+1y
I have the same blocks, if im thinkin the same as you. They're very easy to take apart. First take off the 9/16 bolt that holds on the solenoid. Once that slides off, you'll see that that you can get a deep socket and take out the brass shaft. You'll see all the water and dirt gunked up inside the shaft. Just wash all the shite out and dry it up. Also be sure to clean the o-rings, if they look worn replace them. It also doesn't hurt to give them a some wd-40.