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The sticky trigger fix
siphon feed airbrush:
It always seems to happen just when you are
getting in the zone, the grove of painting. You push down on your trigger and
it doesn't come back up. No worries here's a fix for that little problem.
Pictured above is one of my
bottom or siphon feed airbrushs, yes it's dirty outside but the inside the
working parts are always kept spotless. We'll tackle the sticky trigger on this
type airbrush first.
If you unscrew your air hose
(make sure there's no air pressure going to it first) and turn the airbrush
upside down so the part where the hose connects will be facing you, your now
looking at the AIR VALVE.(pictured below) Inside there is a little AIR PISTON
you need to get some lube down into that piston, work your trigger up and down
until it frees up. The last picture on this page is a picture of the lube I
use.
The sticky trigger fix gravity feed
airbrush:
Now the same fix for your sticky trigger on
a gravity feed airbrush. Most airbrushes are pretty much the same in the air
valve assembly so this should apply to most gravity feed
airbrushes.
Pictured below is our
gravity feed airbrush with a sticky trigger. We are going to take the airbrush
apart as pictured (if you subscribe to Airbrush Artist Magazine you know how to
do this no problem) and once again turn the airbrush upside down so the AIR
VALVE is facing up or at you. On this airbrush that whole air valve assembly
unscrews to reveal the piston as pictured.
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Pictured below s the little
AIR PISTON after I removed it and the hole where in goes in the AIR VALVE
assembly. The easiest way to remove the piston is to use the blunt end of your
airbrush needle, inserting it from the outside pushing the AIR PISTON out into
your airbrush, be careful not to lose it. Clean the AIR PISTON as necessary put
a little lube on the piston and insert it back into your airbrush. Again use
the blunt end of your airbrush needle to move it into place inside your
airbrush; it has to be pushed down inside the AIR VALVE assembly. It can only
go in one way its pretty easy to do actually just take your time. Just to be
clear you insert the piston back into the airbrush from the slot where your
trigger moves (on top of the airbrush) if you look we'll se where it goes in
the air valve assembly. While you have your airbrush apart this far be sure to
give all the parts a good cleaning.
Screw the AIR VALVE assembly back on,
insert your trigger and the rest of the parts, work the trigger up and down it
should work free and easy now. Push the trigger down it springs right back up,
if not repeat the steps above being sure to lube it well.
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Picture below is the lube I
have been using for years with no ill effects to my airbrush, seals or paint.
Its just spray gun lube you can purchase at any automotive paint store. Hope
you found this helpful, until next time remember it's just paint, relax and
have fun.
Don Johnson
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