Pulsing Airbrush

[JaseGill]

Hi all,

I have an Iwata TR1 Airbrush and after a recent deep clean (dismantle) it pulses.

Diffcult to explain but its a fast pulse as if it takes time to build pressure then lets go but in very short fast bursts.

On low trigger setting the cup also bubbles.  This is with water as I usually use water to test before use.

 

I'm guessing its the nozzle tip as I have changed the needle, the packing screw O-ring and the PTFE washer (which I had as spares in the stash).  I am wondering if the Packing Screw is too tight/too loose.  Does anyone have any pointers in troubleshooting it?

 

I have ordered a new nozzle tip and nozzle cap just in case.

Thanks in advance,

J.

[JaseGill]

Fixed it.

Just in case anyone else has this issue it was a loose nozzle.  The new tool I bought doesn't do it up as tight as the old.  Doh!

Back to the old spanner that comes with the brush.

[RalphSarc]

Yea I was going to say backflow/bubbles in the cup is indicative of a leaking O ring or something not tight! Be careful changing the nozzle tip on a Iwata as they are easily crushed!!

[James H]

Always make sure you clean the crap out from the joint between the crown cap and the section behind it. If you don't get a good mechanical and crap free joint there, you can have impaired performance.

[JaseGill]

It was a combo of that and the not so great new Iwata nozzle tool (the red one like a barrel).

It cant tighten the nozzle enough to get a good seal so I'm back to the spanner that came with it.

 

I knew it was a dodgy seal just after 3 cleans, rebuilds, new nozzle, needle, packing washer and packing seal I was at my wits end

 

All good now, just need to find some time to go "play" with it

[James H]

How's your t-shirt?

[RalphSarc]

How's your t-shirt?

 I don't have one or a signed copy of the Spit build, :-( so so sad, lol!!!

[JaseGill]

T Shirt is cracking. Snug but good

j.

[Paulster]

It was a combo of that and the not so great new Iwata nozzle tool (the red one like a barrel).

It cant tighten the nozzle enough to get a good seal so I'm back to the spanner that came with it.

 

I knew it was a dodgy seal just after 3 cleans, rebuilds, new nozzle, needle, packing washer and packing seal I was at my wits end

 

All good now, just need to find some time to go "play" with it

Grreeeaaaatt……..Just bought that. Shit!

[JaseGill]

Its not great.  very good at removing it without damaging it and putting it back on loosely though so not all bad..

As far as tightening it up it doesn't give the same "feel" as the spanner that comes with the Airbrush.