So remember that CPS 135 I picked up a while ago? Well it was pump-shooting out of 3 nozzles so I decided to open it up and see what was going on.
First, to open the gun, you have to start on the nozzle cover. Take the 4 screws out, then pry off the five orange caps on the nozzles. I used my trusty knife to push one side apart, then a flat screwdriver to hold that side open, and then the knife again to wedge the opposite side apart and pop them off.
Here you can see the cap wedged apart on one side:
Now for the root of my problem: the 3 stage firing valve. When I first opened it, it was stuck in the "3" position. I pushed it closed (or to the 1 position)with some difficulty, but it still leaks out of the middle nozzle/possibly somewhere else.
Here it is with the pin pushed in as far as possible:
And here it is with the pin pulled back all the way to "5" I believe:
As you can see, the internal spring isn't pushing the valve closed like it is supposed to.
Now, the stupid part about this gun is that even though it is based on the 1500, it has a firing chamber like a 1000. Meaning, no screws and I can't just open it with a screwdriver and take a look. No, if this thing is going to be opened it will be with a saw. And if I do cut it open with a saw I have No Idea where to cut it so that I don't wreck the thing irrepairably.
So now I ask- has anyone had this problem before? Anyone seen the inside of a CPS 135 valve before? And also, the most ridiculous question, if I fill this thing up with water will the problem magically go away? I normally do test guns with water before I open them but it has a tendency to make things very wet.
I think I will go and try that now... although the valve is super-tight, I'm not sure that the water will be enough to force the thing closed.