Hi. I've got a HP-C plus. I was using it last night, and I'm getting too much stiction in the air valve. Basically, if I pull my finger off the trigger quickly, it takes a fraction of a second for the valve to close. It's not a big deal for base coat stuff, but for camouflage or other details, it's going to be a deal breaker. I cleaned the whole body in the ultrasonic cleaner last night, but it didn't appear to get any better. I put a few drops of lube in there, but it did not immediately get better. I'm going to try it again tonight to see if it's loosened up a bit, but otherwise, not sure what to do, or exactly where the excess friction is coming from.

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Hi. I've got a HP-C plus. I was using it last night, and I'm getting too much stiction in the air valve. Basically, if I pull my finger off the trigger quickly, it takes a fraction of a second for the valve to close. It's not a big deal for base coat stuff, but for camouflage or other details, it's going to be a deal breaker. I cleaned the whole body in the ultrasonic cleaner last night, but it didn't appear to get any better. I put a few drops of lube in there, but it did not immediately get better. I'm going to try it again tonight to see if it's loosened up a bit, but otherwise, not sure what to do, or exactly where the excess friction is coming from.

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Jesse:

Hi!

Hmmmm. Sounds a LOT like an issue I have developed with MY Iwata HC! When I lift my finger off that air-button, it keeps running for a tad...

I took my AB down, pulled all the guts out and did that cleaning - even used acetone. The pin-action is fine and smooth....

I tried fitting the button and its plunger back down into that seat where the air-hose attaches... That's when I discovered that the small air valve was actually sort of sluggish in closing! (The button pushes a valve down - release the button and that valve piece is supposed to pop right back up. Mine acted like it was gummy. )

Sounds to me like you may have this same problem. I THINK mine actually may have happened BECAUSE I put acetone into the AB and some may have seeped down into the air valve - where it may have corrupted an o-ring. So I'm going to break the valve down and inspect and maybe change the rubber ring inside.

My sympathy and maybe this could be your solution, too!

Bob

Hey Jesse,

Dang...i dont know why what you've done hasn't worked. Ive had that issue too, but a good cleaning and lube has always fixed me right up. Think maybe an obstruction may be lodged in the valve...maybe corrosion? When you applied lube, did you work the valve up and down several times to work the lube down into it? Jeesh....outside that...im stumped Jesse. Hope you get it sorted and if you do let us know what the issue was.

Good luck buddy,
Gary

For what it's worth, when I went back last night, it worked perfectly. The lube apparently fixed it, or various solvents that were on the o-ring evaporated enough to reverse any expansion.