gun problems

[speeddemonrodsteration]

I am using the hobbie gun and last night while I was coating the trigger stuck! I had to unhook the air line to make it stop, has this happened to anyone? I took the trigger machanizm out of the gun and everything looked good- nothing that could make it stick open. Am I missing something here? I turned the line pressure down real far to finish the piece (I have a pressure regulator on the gun),and just turned the air adjustment screw off when stopping for a second- any help guys!?!

[Netnut]

Some times I have the same proplem too.
My setup is simple, compressor-regulator-air dryer-air hose-gun regulatoron the gun. I set a compressor regulator about 40psi for the line and since I don't have problem
I hope this helps

fr

[Blademan]

sometimes the plunger on the trigger gets dirty ( even if it looks clean) I take the thing apart clean it with acetone every once in awhile..

[sdold]

Same here, cleaning the plunger parts does wonders. I also use a really small amount of silicone grease on the O-ring.

[seanc]

My gun opeated fine for the better part of a year, through probably 20-30 square feet of coatings. Then recently, the trigger stuck open, so I took it apart for a look-see.

The plunger mechansim was coated with powder, and would not slide freely. You can see traces of all 3 of the colors I had been using - black, orange & silver:



Larger image here

I looks like small amounts of powder can make it back down the fluidizing tube and into the trigger, so I make cleaning the plunger a regular maintenance chore now.

Sean

[crazy_mtb_2002]

one of mine a couple months ago when you would press the trigger would do nothing, you would have to use the twist knob regulator to allow the air to flow, i have started to clean my gun all the time, seeing as this wreaked gun was the one used at school, no-one obviously cleaned it ever, let alone clean the powder on the outside of it.

[speeddemonrodsteration]

I did clean the plunger thing and your right it was pretty dirty. But after I put it all back togather it stille would leak by- I'll try the grease idea, hopefully that works. As for air pressure I normally set my line pressure around 40psi and regulate it on the gun but to get it to stop I had to cut it down to like 20- and the gun didn't work that well like that!

[customandsound]

clean it good and put a dab of grease or teflon on it ..the oil will expand the seal..

[Blademan]

40 psi seems a tad bit high you might try around 20 and regulate, rember its not an aresol can . ya dont want to blow the powder off and past the part. It's much better to build the powder up slowly and evenly rather than dumping it on..

[speeddemonrodsteration]

thanx guys all you help a little grease was all it took!- I was just embarassed because I was doing something for my buddy and he wanted to watch- I don't think he was to impressed! but its all good now thanks to all you experts!

[customandsound]

mistake # 1 never let anyone see what your doing .. i went out to the shop and there was my brother powder coating parts for his freind.. With my powder .. I pulled the plug on that quick