So if it’s the pullout faucet type, I separated the front end of the faucet from the pull out end by twisting it it simply threads in. That left me with just the smaller sprayer end separate from everything else. If you look at the very top of the sprayer inside, you’ll see several indentations that look like a circle with indented squares in it you need to be able to grab these areas to be able to twist the insides out of the casing. This Apollo and internal valve where you will be able to check and see if there’s any sediment hanging in there or not I use the blow gun and a lot came out. It seems like a lot of sawdust, etc. from assembly of the coach. If you look at the very front of the sprayer where the chrome meets the gray, you’ll also notice those few squares in a circle. I use these to push back to get the cartridge out. Part of my mind sinks that I could’ve also unscrewed the innards from that end alone, but it didn’t work for me without getting the faucet fairly scratched up so I did not go with that . Basically, once I had the inside out, clean them and use the blow gun from the front to the back reassembled everything started to work great. I know that the pictures would be so much more helpful and I am going to be going out in the rig in September, but if I can get up into the kitchen and find some time, I will do my best to get you some pictures . And summary your separating the waterline from the sprayer nozzle and pulling out the innards of the sprayer nozzle the hard part is, I said the washers and nuts are all hidden inside and you need to be able to grasp the small indentations in the circle. You will see them as soon as you look and then twist them up just like you were not. I actually use precision screwdrivers to twist them at the same time. Perhaps you have a far better way but I did not have flyers that were small enough. I apologize for any spelling errors. I’m doing this via speech to text. I hope it helped some!