Model 030XPEG. Why won't sprayer pressurize?

No make or model, so no help until that is known.

If an airless paint sprayer won't prime it's usually because one or both check balls are stuck. First try hitting the head where the pump is sharply with a hammer, hard enough to knock the balls loose but not so much that you do any damage to the pump. If that doesn't free them up you may have to take the pump apart and clean them and their seats.
If an airless paint sprayer won't develop pressure, it's usually because the packing rnigs are damaged or collapsed. The only way to check this is to totally disassemble the pump and check them. Also look for any damage to the piston and cylinder. They must be very smooth and shiney, if they are scored they will eat up any new packing rings you put in.

If sprayer doesnt seal against pressure, I suggest check cover gasket A (image 1). Check pump cylinder gasket B (image 2) and additionally, check the procedure if pump dont build pressure. on how to remoce pump cylinder on follow lines.



If pump doesnt build pressure... in most instances, failure of the pumo to build air pressure in the sprayer is due to dry or worm plunger cul leather. To work on cup leather, always remove plunger from pumo cylinder. Do not attempt to oil cup leather through breather hole in **** cap.

First, unthread pumo cap A (image 1). If cap is too tight, and if pumo will build even slight temporary pressure, pressurizing the tnak will make it easier to loosen cap. Once cap is lossened, release tank pressure. Hold pump cylinder by inserting hand through tank filler openning (image 2), and unscrew cap all the way. Pull plunger from cylinder, and remove cylinder from inside the tank.



Place a few drops of clea oil (not heavier than SAE 30) on leather, and massage into leather until it is soft. Replace plunger cup leather if damaged (image 3). to remove plunger leather assembly, use coin rather than screw driver in the slot of the plunger cup retainer. To reassemble, hold pump cylinder in tank openning, with squared edge of flange, at top of cylinder, toward tank wall.



Hope this helps to solve it.

I would return it to where you bought it. It sounds like the seal between the cover and the container is defective. Take a small container of soapy water and gently sponge it all around the cover of the sprayer. Pump it up and note where the bubbles form--this is where your leak is.
If you are not able to return it, check to see if there is a rubber insert that should be evenly seated around the cover where it screws on. You may be able to tighten that gap by using pipe thread tape around the ridges, but this is a temporary situation.

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

If there is an adequate amount of water present, then most likely there is a filter stopped up or a pump that is obstructed or defective

Hi and welcome to Fix Ya, I am Kelly.

One of the seals has failed in the pump. i.e cut o-ring or a leather rolled out of place.
Go to this link.. http://www.chapinmfg.com/PartsAccessories.asp
Find your model number and on the far right of the page is the repair kit for your sprayer.
This is the 6-6180 repair kit:
http://www.chapinmfg.com/ShowParts.asp?PartNum=6-8180
This is the 6-1925 repair kit:
http://www.chapinmfg.com/ShowParts.asp?PartNum=6-1925
The repair kits above are examples only... find the kit that is for your sprayer and order it.
Once you find and replace the damaged seal it will work fine.
Thanks for choosing FixYa,
Kelly

usually you can get a seal kit for your pump. I would need the model number to direct you to the parts you need.

IT'S AN INTRINSIC FAULT WITH THIS PIECE OF JUNK. THE DIAPHRAM INSIDE THE PUMP TUBE IS ABSOLUTE GARBAGE, THEY DON'T EVEN WORK PROPERLY WHEN BRAND NEW, BUT AFTER A FEW MONTHS THEY WON'T PRESSURISE AT ALL. BUY A QUALITY SPRAYER, THAT REPLACEMENT PARTS ARE AVAILABLE FOR.