Need pump gasket won't hold pressure - Stanley 61804n Professional Backpack Poly 4-gallon Sprayer

Just to confirm that the pressure tank was pre-charged with the tank emptied of water. If water comes out of the air valve, then the bladder is ruptured, and the tank needs to be replaced.

Hi

Here are a few things to check, you may have already checked some of these.

*Electricity...Compressors will run best with full 115Vot 15AMP/Or 220V electrical supply from a circuit, over the shortest electrical cord as possible.

*Air Leaks..Place your ear close to the compressor and listen for air leaking, if you hear air that is not normal and means you have to locate and repair whatever it is that is leaking.
*Check the air unloader valve... The air unloader valve will blown out air when you turned off the compressor, that is normal.
But it should not have air leaking out of it all of the time. If so then it is faulty and in need of repair/replacement.
*Valves...If either the intake or exaust valves fail, breaks, or fails to seat, then your compressor will run 24 hours a day and never build up to the correct pressure for shut-off.
*Gaskets...Check to see if your gaskets have failed.
You could have a gasket failure between the pistons and you will never know it because it shows no external air leak.
If this situation happens then the air will only cycle between cylinders and never build up the correct air pressure.
One way to check the gasket is remove the air filter, then put your hand over the intake.
If correct then it will **** you hand against the intake.
If the valve or valves have failed then you will feel the air sucking in and blowing out.
*Piston Rings and Cylinder...The piston rings could be stuck,broken, or worn and not allowing the correct pressure to build up in your tank.
A worn cylinder will also contribute to the problem of pressure build-up.
*Pressure Switch...Check for air leaks at the pressure switch, it has a rubber diaphram that can fail and leak air out of the system.
Please take time to rate me
Bud

As the pressure TANK only holds the liquid under pressure, you now have two good tanks.

Did you adjust the pressure switch or check it for operation?

Either adjust it or change it with a known good one.

No there is not a filter. Since the pump is enclosed in the plastic covers there would not be a way to service it. Now if it is not building any pressure then it could be a few things. First would be the drive belt. (item 125) If it breaks then it won't pump at all. Also if the air hose that exits the pump (item 122) gets a hole in it then it won't fill the tank. A worn head valve plate (item 106), blown gasket (item 105), or a worn piston and sleeve (items 109 and 112-2) can also cause this. If the check valve into the tank (item 16) gets stuck open it too will limit how much the compressor will pump BUT usually it will build up some pressure then just keep running without building any higher pressure into the tank.

Here is a parts diagram so you can see where the belt and other parts are located plus it contains all of the part numbers.

PC CF2600 diagram

Try smearing some Vaseline on the gasket that goes around the pump shaft at the top.

White smoke is a sure sign of a blown head gasket.
Haven't you noticed the loss of coolant?
To be absolutely sure, you run a cooling system pressure test.
Basically you replace the radiator cap with a pump and gauge.
You pump it up over the cap rating, and watch for a few minutes to be sure it holds pressure.
A head gasket leak will usually not hold pressure.
Then you try it with the engine on.
When you rev it, that produces the maximum heat and pressure, so a leak will cause the gauge to oscillate every time the leaking cylinder fires.

sounds like its not working properly, the fuel pump pumps or it does't, then goes to regulator this is where pressure is adjusted. check fuel pressure with gauge, sometimes even new fuel pumps don't pump enough fuel. most fuel injected cars have over 50 pounds pressure.

Doesn't sound good. If you didn't add antifreeze (depending on climate) in the fall, then water that is in the pump will freeze and pump will need replaced. In any case you have to take the pump off. You might possibly get away with replacing shaft seal and a new gasket on the pump body. let us know

you will have to try the following start up purge up onece with just water then start the powerwasher if that does'nt give u pressure ther is gaskets inside the pumping sometimes 4 to 8 of them these might be to wore down to hold pressure if u can locate the pump and desemable it run it to ur local dealer tell u need new gaskets put into it