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Old 04-05-2005, 06:46 AM
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Gun cleaning/storage?

I ended up buying an el cheapo HVLP touch up gun (gravity fed) to spray my door jambs with and was pleasantly surprised at how well it worked but the gun came with the worst instruction sheet I've ever seen. Doesn't have any instructions on taking it apart or cleaning it although it does recommend putting oil on the gun to store it between uses.
Can someone point me towards a site that has some good basic gun care instructions? What kind of oil are they referring to? Don't want to put something in there that can't be easily and completely removed before the next project.

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Old 04-05-2005, 07:11 AM
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Basically. Pour thinner,or reducer in the cup and wash out as much paint as you can. Take the air cap off and using the supplied wrench unscrew the tip while pulling back on the trigger to prevent the tip from "rounding" inside the tip while unscrewing,same for reassy. Once apart,take the round brush and work the inside of the paint transfer area till clean. Rinse out with thinner.Dump the tip & cap set into a cup with thinner and I use anything from a Q-tip to a toothpick to clean them out. Reassemble and pour in some clean thinner and spray it out good. I use NO oil INSIDE the gun,just on the outside of the needle packings and pivot's of the handles,mabey some on the threads of the adj. knobs.
Occasionally you'll need to clean the air horns on the tip which a pipe cleaner or such is good.You don't want to scratch it with a sharp wire or the like.

I have seen some people use a small 5 gal parts washer and just disasemble the gun in it and clean the whole thing in it.

I pour a few ounces of thinner in the cup for storage and this will keep what residual liquid till the next use.

Hope this helps.
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Old 04-05-2005, 01:35 PM
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What kind of oil???? Machine oil ???
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Old 04-05-2005, 03:37 PM
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I tried oil in a gun once and did not get it all out I guess because it screwed up my next paint job. I figure there is nothing in there to corode so I spray mineral spirits through, dry it out then store it inside where the humidity is low and have never had a problem.
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Old 04-06-2005, 04:30 AM
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Thank you! That's exactly the kind of info. I needed. The gun had a warning on it that it had oil inside it from the factory so I ran 2 cups of mineral spirits through it before I put the paint in and sprayed some on a practice panel. It doesn't seem to have caused a problem but it worried me.

I assume that they meant machine oil but....who knows? Think I'll stick to keeping the oil on the outside.
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Old 04-06-2005, 04:58 AM
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I might be screwing up, but I have never put oil in a spray gun, just seems counter productive. Never had a problem with a gun rusting up any ways, most wetted parts are stainless. Why run the risk of messing up a paint job? IMO that was bad advice.

Vince
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Old 04-06-2005, 07:49 AM
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Any gun manufactured has a residue in it and should be cleaned with a solvent throughly first before use.Any light oil is fine.Just trying to keep things moving properly.
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Old 04-06-2005, 07:59 AM
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Go get a BIG package of pipe cleaners. Spray painter's best friend! Pull the gun clear down after each job and polish all the little passages in the innards w/ the pipe cleaners and lacquer thinner.
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Old 04-06-2005, 08:05 AM
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Shouldn't you put a little oil on the leather packings???? Just enough to keep them moist,,,
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Old 04-06-2005, 08:26 AM
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That's why you put some on the needle shaft outside.
Most packings are Teflon or Nylon nowday's anyhow.
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Old 04-07-2005, 08:07 AM
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My guns I use for primer are a siphon type from alltrade, they have leather packings,

so thats why I use a light machine oil on them,,,
Thanks,,,
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