Leaderboard

There are no instructions to replace the seals. I also would not replace the unloader without testing it first. The first thing to do, since you are not getting any prime out of the pump, is to hook it up to a hose for a pressure feed. Leave the hose off or disconnected for now. Turn the hose on as full as you can get it. Leave the machine off for now. After the garden hose is turned on all of the way, is there water coming out of the outlet? If there is, you know that you are getting a feed. If there is not, clean out the inlet filter. There are multiple varieties of these filters. They can be a simple screen that is where you attach the hose to the machine, or sometimes they can be a little upstream of the hose, and actually have a filter housing that you need to remove. It will be a little round thing that is on the inlet side of the pump that a pipe is running through. The top will screw off and there is a screen filter inside. If you are getting water out of the machine, turn it on, with the hose still off. Does it look like the water is pulsating? If it is, the seals should be able to pump at least a little water. If it is not, then the seals are really shot. They are not hard to replace. If you have some common sense, and can put things together the way they came apart, you will be okay. If it appears that it is pumping water, turn off the machine, and Attach the gun. See if it is working now. If it is not, check the unloader. Hopefully you have a rubber line between the unloader, and the inlet of the pump. If you do, you can try to turn on the machine, with water to it. Hold the gun open, and pinch off the line as tightly as you can. If the pressure goes up, the unloader is probably bad. It is time to replace it. If you sensed a vibration in the gun, it could be one of the valves has gone bad, or an o-ring in the pump has gone bad. You will need to take all of the valves out and check them. After the valves are out, suck on the big end of them, and see if there is an easy draw of air. If there is, there is something wrong with the valve. Chcck that the housing on the valve is not cracked, or that the little plate in the valve is not broken. While they are out, you can also check to make sure the orings that the valves sit on are in good shape. For me, the first thing I usually check on a low/no pressure situation is the valves. They are easy to get at, and are fast to check. Then I would worry about seals. I can check the unloader with my machine on simply by seeing if water is flowing back into the tank. There are other thigns to check, but these are the biggies, Scott Stone