My airbrushes trigger has a spongy feel, it depreses slowly and rises in the same way. It is affecting my spraying. How do I fix it??!!
Thanks
Will
hve you tried stripping it down and soaking the trigger assembly in thinner?
Was that a quick response or what??, no I have not tryed it yet. I use acrylics and usually thin with water, what would you suggest for this soaking??
Will
Time out!
First off, what airbrush is it?
Its an AB-119 Double-Action Airbrush.
If I was to soak it, what solvent would I use, remembering I only use Acrlys, and for how long would I soak it for??
Will
I wouldn’t soak the air valve assembly in any sort of solvent.
You should be able to unscrew the air valve from the airbrush body as a complete unit.
When you do this, you should be able to see the upper end of the plunger with an o-ring around it - I suspect that this o-ring may have gummed up. Refer to part #19 in the diagram below.
Carefully slide the o-ring off the plunger stalk (don’t lose it - it’s only 3mm across and less than a millimetre thick) and wipe it with a tissue - if it is sticky or it leaves a lot of black residue on the tissue, (or if there’s sticky black residue on the plunger stalk) then it may be perishing - if so, there’s not a lot you can do about it except replace it - and I don’t know where you can get a replacement o-ring of that size.
If it’s not perishing then you’re ahead of the game. With the o-ring “off” the plunger, press the plunger down and see if it returns smoothly. If so, re-install the o-ring and hit it with a little silicone based lubricant. It’s important to use a silicone based lubricant and not a petroleum based one (which will, in the worst-case melt the o-ring, or make the o-ring swell, causing the plunger to stick again)
This is not the exact same model you have, but it should be close enough for this purpose:
I’d say most likely that your o-ring is shot. can you get to the LHS? if not, you could probably go to an auto supply store and see if they have any o-ring repair kits with something that small in them. Good luck!
P.S. I’m having the same problem with my Badger, so I know just how you feel!
I would guess that he got paint into the air valve.
Thankyou everyone, I will post here once I have looked at the O-ring, hopefu,lly this afternoon.
Will
OK, how do I take apart the valve assembly?/
Will
FIXED!! I checked the O-Ring, and it is in mint condition! I made sure everyting was properly set and then I thourly soaked the Airbrush (without Valve assembly). The trigger action is now as good as new!
Thankyou for all your help!!
Will