D
devilboy customs
Guest
Having a spray issue I cannot figure out. Like the title says Paasche vjr. It started out as I noticed a "spitting" when I was painting which upon closer inspection turned out to be an occasion misspray the would leave paint on the tip then blow it off when sprayed again. So I cleaned it within an inch of it's life...no help. No bend to the needle so I thought maybe the nozzle had a hairline crack in it that I couldn't see. Also the tip had a few dings in it...it's been dropped a time or 2 over the years. So I replaced the tip, needle, and nozzle. No help...if anything the problem was worse. I tried the needle and nozzle from my Paasche V...same problem. I tried every conceivable combination of old and new parts that work together...same problem. I completely disassembled and cleaned it. Took apart the valve assembly and checked the O ring. Took out the cheater wheel and cleaned it. The only thing I didn't take out was the Teflon packing....because I couldn't figure out how to remove it. It's hard to see but it seems to have a few "chips" in it and the needle seems a bit too snug in it.
So the problem as it stands now: Sprays off center as often as not. Constantly off center at under 20psi spraying lacquer thinner (I know that this model is recommended 30+ psi but I have one "paint" I've been spraying at about 15psi for years with no issues.) Sprays relatively OK if you ramp up the pressure to 50+psi but will still spray off center if you only lightly press. Always sprays off center the same way...if you were spraying at the center of a clock, it sprays up and to the right so it would be between the 1 and the 2. That rules out a needle, a nozzle, or a clog issue in IMO because there's no way the problem would fall in the same place each time. I think the problem is with the airflow. Possibly the pressure is coming through unevenly somehow? Maybe a problem with the valve?
Like I said, I have a V that I can steal parts to try out if I need to. Here's a diagram:
Like I said, I have new parts VA, VN1, and VT1. V-83 is the Teflon packing I couldn't remove. Any help will be greatly appreciated!!!!!
So the problem as it stands now: Sprays off center as often as not. Constantly off center at under 20psi spraying lacquer thinner (I know that this model is recommended 30+ psi but I have one "paint" I've been spraying at about 15psi for years with no issues.) Sprays relatively OK if you ramp up the pressure to 50+psi but will still spray off center if you only lightly press. Always sprays off center the same way...if you were spraying at the center of a clock, it sprays up and to the right so it would be between the 1 and the 2. That rules out a needle, a nozzle, or a clog issue in IMO because there's no way the problem would fall in the same place each time. I think the problem is with the airflow. Possibly the pressure is coming through unevenly somehow? Maybe a problem with the valve?
Like I said, I have a V that I can steal parts to try out if I need to. Here's a diagram:
Like I said, I have new parts VA, VN1, and VT1. V-83 is the Teflon packing I couldn't remove. Any help will be greatly appreciated!!!!!