Question about Hitachi 3 - 1/4" Framing Strip Nailer

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Product NR83A2. Lubricate is coming from the trigger and exhaust cover. The nailer is new and I put lubricate in the gun prior to placing the air plug on. What is the best way to drain the excess lubricate from the gun. The manual indicated to add 5 to 10 drops to the gun after nailing. I put a great deal of lubricate in the gun prior to using.

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Excess oil will eventually be consumed /blown out of gun, however if you store the gun over-nite with air inlet pointed down, gravity will assist. I find that oil /water will accumulate inside gun especially if compressor is passing oil and/or weather conditions cause system to produce lots of water. Majority of guns that come in for repair suffer from a lack of lubrication. Several drops at start of day should be ok for oil lubricated compressors and maybe more for oil-less. If oil drips out of gun overnight (if stored as stated above) then reduce drops. What actually shortens life of gun is debris that enters gun from handling and that enters hoses during transport. Before connecting air hose to gun (with hose under pressure) momentarily connect a spare quick connect fitting and blow debris out of hose.

Posted on Mar 16, 2011

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When my Senco SLP 20 brad nailer is connected to air hose, air will blow-by through the exhaust. After you fire a couple of pins blow-by stops


Most problems with this gun centers around the firing valve part # Bao119 . This part must not get any oil because it will swell and begin to fail as you describe. That being said, the trigger valve does need some type of lubrication or it will become sticky causing problem that you describe. If you have been using oil in the gun, most likely inner trigger parts will be lubricated and failure is firing valve. If no oil has ever enter the gun, suspect the trigger valve. It will need to be removed from the gun and lubed with white grease or silicone lube. Good luck

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Senco makes a kit for your nail gun, part number YK0360. If you have any o-rings giving you problems, it's always best to replace all of them. You can get them from online parts stores like eReplacementparts.com or possibly from rental or repair places near you. Make sure you lubricate all the o-rings well when putting the new ones in.

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No it is not. It should not leak at all. Where is it leaking air from? The 3 obvious places are the exhaust at the top of the head, the nose where the driver comes down, and the trigger valve.

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A new trigger valve and o-ring kit will give you a like new gun. Just remember to replace all available o-rings in the kit, lightly grease all of them as you reassemble the gun and use pneumatic oil at the beginning of the day so you won't be doing it again in a couple months.

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The pin on my Dewalt dc616 cordless finish nail gun is ceasing up. How can i lubricate it? can i spray silicon into the nose of the gun?


Hello, W/D here.

The better way is to disconnect the air line from the gun, and place several drops of light oil in the gun while holding the trigger down. Oil daily. Then, re-connect the hose, and fire a few nails into scrap wood.
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Best regards, --W/D--

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There are O-ring seals around the trigger that are probably leaking. You can try to lubricate the gun by adding the pneumatic oil to the air supply. That may be enough to seal it back up. Otherwise the seals and/or the trigger assembly will need to be replaced.

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Hitachi nail gun nr90ad leaks from trigger when air hose is connected


Orings, they have to be replaced every few years. Warranty does not cover them.

Any Hitachi service centre should stock them. Or find your model on Ebay:

http://shop.ebay.com/i.html?_nkw=hitachi+o-ring+kit&LH_IncludeSIF=1&_arm=1&_armi=0&_armm=20&_ruu=http://shop.ebay.com/i.html%3F_nkw%3Dhitachi%2Bo-ring%2Bkit%26_arr%3D1&_rdc=1

Hope this helps!

Thanks

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Framing nailer, dewalt d51823 doesn't fire. Orings appear to be intact. I can feel oil coming out by the trigger and air leaking when I try to fire it. Otherwise there are no leaks. I have an identical...


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1 Answer

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This happens to my gun too. You probably need to oil the gun once in a while. Here is how you fix it:
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