paint gun trigger tune-up

[rons]

I did this for a GTI but it would work for many others too.

I always disliked the loose sloppy feel with my paint gun trigger.
I unscrewed the trigger from the gun body and machined .035
from the end of the trigger stud. Now fits tight as a glove and
the action feels great. You can do this with a file too. Use a
caliper to measure your progress.

[Bob K]

I believe that DeVilbiss engineered there guns quite well. They are quite capable of removing all the free play in the trigger hinge. The fact that they built the gun with the bolt apparently longer than it needs to be just suggests that there is a reason for doing it that way. Maybe so it doesn’t stick open when surfacer finds it way into the hinge. You may discover the reason in your future endeavors. If you find that you were wrong and the modification did in fact cause unintended consequences please be sure to let us know.

Bob K

[rons]

I believe that DeVilbiss engineered there guns quite well. They are quite capable of removing all the free play in the trigger hinge. The fact that they built the gun with the bolt apparently longer than it needs to be just suggests that there is a reason for doing it that way.
Bob K

Apparently you have not looked at their parts very closely. Lots of burrs and
such. Chrome plating helps hide that stuff. I machined a body bushing (which
houses the needle) out of 304 stainless. Much better fit and action than their
original. The stock bushing made out of brass is too weak and can collapse
from a socket or wrench if it was put on too tight. I don't think the engineering
is so great from a machinists point of view, but acceptable to those who don't
know such things.

[another2centsworth]

lol............

[Len]

Apparently you have not looked at their parts very closely. Lots of burrs and
such. Chrome plating helps hide that stuff. I machined a body bushing (which
houses the needle) out of 304 stainless. Much better fit and action than their
original. The stock bushing made out of brass is too weak and can collapse
from a socket or wrench if it was put on too tight. I don't think the engineering
is so great from a machinists point of view, but acceptable to those who don't
know such things.

I've been using DeVilbiss guns for the entire 45 years I've been spraying and never had ANY problems with their engineering. I take them apart after every use to clean and I rarely replace a part do to wear.

Are their better guns? Sure but, like anything else, they cost more (sometimes a lot more) and don't necessarily perform any better.

[rons]

I believe that DeVilbiss engineered there guns quite well. They are quite capable of removing all the free play in the trigger hinge. The fact that they built the gun with the bolt apparently longer than it needs to be just suggests that there is a reason for doing it that way.

......... please be sure to let us know.

Bob K

Belief does not have anything to do with fact, here it is:

I found out. Devilbiss does not explain why they do this. The reason is
to keep interchangeable parts to a minimum. Explanation given to me by
an expert autobody parts dealer. They have asked the same questions before.

LOL.....