Airbrush problem

[BBdave]

The only exploded diagram I can find is of the "hp-b plus" which does look slightly different on the rear end so I'm not sure the seals will be the same. I suppose this one is an older model it may be easier to send it for a service.

Dave

[stona]

As I keep saying, blockages aren't the only things that cause problems! *sigh*

No indeed.

There may be a seal gone somewhere, but that's not a brush I'm familiar with. As far as blockages go they may be in either a paint way or airway (or both). There are a lot of things that can cause air to blow back into the paint cup which is why it's a tricky problem to diagnose remotely.

My old (and I mean old) Iwata Revolution developed a problem where it passed air okay but when I introduced the paint (or any other liquid) it spluttered and spurted. I have no idea what caused this, I thought it might be a problem with the nozzle not centring in the nozzle cap (something else not mentioned yet) but it wasn't. I'm still none the wiser as it seemed to fix itself after I took it apart, cleaned it and put it back together

Cheers

Steve

[Guest]

I would first Adrian dismantle the whole thing to follow Steve's ideas. I would especially look at the nozzle and sight through to make sure it is perfectly clean. Also just have a look at the tip of the needle. I have found that just a speck or two of dried paint on the sides of the very end can cause a blockage thro. the nozzle. Sometimes this is almost impossible to see without magnification. I use my finger nails to drift up (down can be painfull) the needle to remove any of this paint dross.

Failing this come back and somebody will suggest other possible problems.

laurie

[BBdave]

Bingo! I bought a new hose today and had a session with the airbrushes I experimented a little and swapped the nozzles and problem solved!

The other brush spits paint as soon as I press the air I know the nozzle is damaged will this cause this problem? I can get a new one and needle ordered if it is.

Dave

[stona]

The other brush spits paint as soon as I press the air I know the nozzle is damaged will this cause this problem? I can get a new one and needle ordered if it is.

Dave

Yes.

Cheers

Steve

[BBdave]

New nozzle and needle fitted and it works fine again.

Dave