Shoot the blow gun in all the tight spaces where your vacuum hose can't reach. If possible, attach a small jet pipe on the end of the gun to reach the tiniest crevices.
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I've found over the years the least amount of times you can tear a spray gun completely apart the better. Usually a real good 'flushing' with lacquer thinner will suffice. I will take the air cap off and let it soak in thinner to dislodge any build up but other than that, I simply run thinner thru till it runs clear out the tip.
I also 'back flush' which involves having thinner in the cup and the air supply hose attached. the air pressure should be adjusted quite a bit lower than what you use for spraying paint.
Then you place a clean shop towel or rag over the air cap of the gun and pull the trigger. This forces air back into the paint cup 'back flushing' the gun. Then take the rag away from the cap and pull the trigger again to run thinner thru the gun the normal way.
IF you still want to tear the gun apart for cleaning you can hopefully get some idea with this video link;
There are different filter screen sizes for different thickness of paint. Even with proper screen size one might need to thin paint. I hope this information is helpful. Please give a rating if this was helpful. Good Luck and have a Great Weekend.
most new nail guns and stapler don't call for oil.check your gun to make sure that it needs oil . in my experience oiling a gun that doesn't call for it will cause more trouble .if this is the case you will need to get the oil out of it. you can try spraying contact cleaner in the air intake and hooking the air line up and firing the gun.if this wont fix it you may need to pull it apart to clean the oil out.be careful what you use to clean this with because you can cause your O-Rings in your gun to swell up.any nick in a O-Ring can cause failure. i hope this helps you out
drain your system of pressure. remove your air cap and nozzle from the gun. slowly increase fluid pressure till it comes out of gun. this will clean out debri from gun. reduce pressure so you don't wast anymore fluid.
clean nozzle properly / completely
clean aircap. properly / completely
inspect needle tip for abnormal wear.
if cleaned properly you will find your gun works much better.
Air pressure, normal everyday gun you will want at least 50lbs air pressure at the gun - and there are inline pressure gauges that will go on the end of the gun for pressure adjustment & to read the pressure. As far as paint, if you have a viscosity checker, use that, otherwise, make sure you have the proper thinner/reducer and or hardner in the paint since most paints you cannot spray without reducer cause they are too thick. If you have used the gun before and not cleaned it, it it likely plugged up and can be cleaned with laqquer thinner in most instances, and the metal guns can be left overnight in gun cleaner or gasoline if they are really plugged up and then cleaned with the lacquer thinner. hope this helps. Rick
Daily clean-up all parts with proper cleaners/solvents. Re-lubricate where lubricant is washed away by cleaning. Moisture traps and compressor tanks must be drained daily.
RECOMMENDED SPARE PARTS FOR EACH GUN
* Air nozzle, needle and tips
* Packing and gaskets
* Hoses and fittings
* Gauges
* Proper lubricants
* Filter screens
* Diaphragms for pressure regulators
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