I was just teaching myself how to pull apart, clean then re-assemble my my new Paasche which I have had for about five months and haven’t even used yet, then after the fourth time, I pushed the lever down and back to see if the spring was engaging. The lever went back and forth just fine, but it keeps on getting stuck each time I push it down, and I have to pull it back up. I stripped it back down a further three times to see if I was re-assembling it wrong but it proves not to be the case. Anyone know what’s wrong with it? Does this happen normally? Would it be a damaged part?
Did you take the air valve apart? If so, like mentioned, make sure that spring is there. If not, use a little needle lube on the trigger plunger, the part that goes down into the valve. It’s probably dry and sticking to the rubber oring.
In one of the times I disassembled the AB, the trigger did completely come out. I didn’t see any spring anywhere, I knew it would’ve been spring loaded but I assumed that the spring was contained inside the valve area more securely.Thing is, right now I have the AB in front of me dissassembled no more than I had it last night. The rear assembly and rocker is currently removed but the trigger is still mounted and is springing back up straight after I take the pressure off it.
It has to be either that there is another spring or something is jamming the trigger whilst the whole AB is complete.
…OMG. I just reassembled it and the trigger is springing back up again almost completely, just shy by a ml or so. [%-)]
If the needle is withdrawn from the airbrush, the trigger assembly can simply drop out, as the only thing that keeps it in place is the needle, which passes through the shaft of the trigger. This is not a problem.
If you didn’t disassemble the air valve, it’s unlikely that the return spring has gone missing. This would only happen if you removed the air valve assembly and, in turn, disassembled that.
It may simply be that you have screwed the needle tensioning collar in too far and it’s causing the trigger to bind. When you pull back on the trigger, is it very tight? Is the action smooth? Try backing off the adjusting collar a little and see if the trigger frees up.
Right now the trigger and movement feels normal and smooth. I think I unscrewed the needle tensioning collAR. I that the conical metal screw on the front of my model with the hexagonal spanner faces. If so then I did remove it completely.