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Senco sns40 stapler replaced all o rings still leaks air. Even seals in trigger assembly. Leaks out the exhaust port.

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Air leaking thru exhaust on sns40 gun is indication of pinhole in rubber diaphragm of firing valve (part #BA0120). This gun is oil-less type and will develope leaks if oil is used. Most likely need to replace firing valve to restore to working order. Parts are at www.toolpartsdirest.com. Good luck

Posted on Mar 14, 2011

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1 Answer

Stapler leaks ouy of top


Try oiling it first. If it still leaks I would check the seal (reference #11) on this parts diagram.

http://www.ereplacementparts.com/senco-sns41-nailer-parts-c-117621_117622_117782.html

Mar 07, 2012 | Senco SNS41 16Ga Stapler 1" 2"

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My senco 1/4" crown air stapler would not drive a staple & now leaks air constantly


It sounds like you have broken or damaged o-rings inside the gun and the only repair is to replace them. Senco does make kits to rebuild most of their guns. Go to http://www.senco.com/ and click on 'Parts Charts' at the top of the page then find your model. The PARTS GUIDE will list a rebuild kit if one is available. The part number will start with YK followed by four numbers. If there isn't a rebuild kit available for your gun, you'll have to order each o-ring seperately. All o-ring part numbers start with LB.

Feb 16, 2012 | Tools & Hardware - Others

1 Answer

Air tends to leak near trigger of my senco sls15 1/4" crown stapler . how can i stop it?


You have worn or broken o-rings/seals inside the gun. You need a Senco repair kit YK0393. Senco doesn't make them any more but there are still a few to be found on the internet. If you can't find one, go to the Senco webpage, find the parts breakdown for your gun and order all of the o-rings, seals and gaskets and rebuild your gun.

Feb 09, 2011 | Senco Finishpro 15 Finish Nailer & Sls15...

1 Answer

Sns45xp senco dosent shoot anl leak air for the cap


You have worn or broken o-rings in your upper firing and trigger system. You need a Senco repair kit #YK0230 to fix your problem. Fairly easy to do, replace one o-ring at a time to make sure you get them back in place properly and use the grease in the kit liberally. Since you'll have it apart I also recommend you get Senco repair kit #YK0231 which is the lower seals and piston stop. If the upper rings are going bad the lower rings won't be far behind.

Feb 03, 2011 | Senco SNS45XP 16Gauge Construction Stapler

1 Answer

I have some air nailers and staplers that have some leaks and aren't working properly. I would like to try rebuilding them, they are bostitch, paslode, and senco. I have found the rebuild kits for trigger...


The kits for the senco guns, have all the o-rings and seals needed to stop most leaks, no hard parts. You have to replace all of them, no oil is needed, but it needs to be clean, some have little tubes of grease for the o-rings. I'm sure the other guns are the same way. Some of them will give you a fit. I had a senco sfn1, totally rebuilt, still leaked, tried it again, still leaked, called senco, they said send it to us, they fixed it for free, but never said what the problem was. Some times the triggers go and you end up building the whole gun for nothing, and the trigger still leaks, they are the toughest to spot. I have seen a lot of complaints about paslode. We tried them all in our shop, and the senco was/is the best, So we fazed out all the other guns and kept the senco, so all the nails were from 1 dealer, all the parts, we weren't looking all over town for a box of staples.

Feb 23, 2010 | Stanley Air Tools & Compressors

1 Answer

Air nailer air leak


No, internal leaks on your Senco require replacing the seals, which can be tricky. You Can try the repair kit they sell, but they're usually for the firing/triggering system and piston stop system.

Nov 11, 2009 | Air Tools & Compressors

2 Answers

Pneumatic stapler leaks at the top


your problem is you have blown a seal. On some of the cheap chinese guns, it might be a flat gasket instead of an o ring.

May 25, 2009 | Air Tools & Compressors

1 Answer

MY PNEUMATIC STAPLE GUN WON'T WORK/ looses air through firing lever.How do I repair it? Where do I put the oil in?


I would agree with rowdy that the make and model number are essential to getting the right parts - If you have that information, just find a dealer that supports your brand. That being said, air leaking out the trigger area is likely to be an O-Ring or Seal problem. Pneumatic staplers have O-rings and Seals that need to be replaced periodically. Most have rebuild kits available that contain all the O-Rings and Seals that need to be replaced. Many staplers have O-rings and/or Seals on or near the trigger shaft that can wear and allow air to leak out

Mar 11, 2009 | Tools & Hardware - Others

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