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Posted on Nov 21, 2012
Answered by a Fixya Expert

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My new porter cable RN175B nail gun won't discharge a nail

Its new never been used. Loaded nails hooked up to compressed air and pushed nose against wood pulled trigger and nothing happened

1 Answer

John Trevino

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  • Master 1,420 Answers
  • Posted on Nov 25, 2012
John Trevino
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Joined: May 17, 2008
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If the trigger is set to single fire, you will need to place the gun against the work then pull trigger as you have done. Try setting the trigger to bump fire and try again. If hear a thump inside the gun, remove the head and check that the head valve in not stuck from lack of lubrication. Easy test, remove the nails, remove trigger pin, remove trigger and manually push trigger firing valve. If the gun fires then suspect faulty trigger or safety arm not lifting enought to activate the trigger valve. Good luck

5 Related Answers

Chuck Nelson

  • 24 Answers
  • Posted on Apr 14, 2009

SOURCE: Makita AF503 Brad Nailer won't fire nail

Take head off of tool. Clean and lube orings on the head valve . Do not use wd40 use air nailer oil.

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Anonymous

  • 3 Answers
  • Posted on Mar 11, 2009

SOURCE: I purchased a new FN16250K-2 finish nailer today. I loaded it w/

get a senco

Anonymous

  • 125 Answers
  • Posted on Oct 02, 2008

SOURCE: won't feed nail

This happens to my gun too. You probably need to oil the gun once in a while. Here is how you fix it:
Disconnect the gun from the compressor first don't wanna get hurt or anything like that. There is a pin that shoots the nail out well that pin is jammed so what you have to do is push that pin to the original position. using a flat head screwdriver would help you to push that pin back into place. Let me know how that turns out please. I pretty sure that is the problem with your gun. Make sure you lubricate the Nailer once in a while.

michaelwitt

  • 74 Answers
  • Posted on Aug 29, 2009

SOURCE: porter cable brad nailer only fires brad on second trigger pull

The dent in the wood is not caused by the air. It's caused by the set that drives the brad. Are you oiling it consistenly? Are the brads the right manufacturer for your porter cable brad nailer? From the information you give it appears that the brads are not advancing correctly or that the air pressure is not sufficient to dislodge the brad from the brad strip on the first strike - it takes an additional strike to break it free. The standard for adding oil is to add ten drops of air tool oil for every hour of operation. That seems like a lot, but the correct amount of oil is a sure way to prevent most air tool problems.

Testimonial: "Thanks for the info. I was not oiling it at that rate. Is there anything I can do to fix the issue now that I didn't prevent it?"

Anonymous

  • 21 Answers
  • Posted on Feb 14, 2010

SOURCE: Why does my porter cable nail gun FN250B shoot

check the magazine bolts are tight and that the magazine is snug aginst the nose. also be sure you are using 16 gage brads and not 18 gage

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How do I unjam a porter cable BN200SB nail gun

I suggest that you make sure that there is no air he tool so, remove the air supply. Then if you remove the cover from the nose (Making sure that you also take out all the unused nails first) it should allow access to the front nose plate. If you remove this, it will allow you to carefully remove the nail. While you're at it, check that the driver blade tip doesn't have any burring or damage to it. If so, you might need to fettle it back into shape or, replace it?
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Are you depressing the nose of the nail gun against the material to be nailed first? Without doing this, the trigger will not "unlock". You can read a pretty in-depth review of this nail gun at OnlineToolReviews com Porter Cable FR350A Full Round Head Framing... which might also help.
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Open the front and see if the nails are feeding through. If the piston is down push it up, close the front and try again.
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Stop using it and take it in for service. If it is leaking air then an o-ring or seal may have failed (most likely guess) and it needs to be replaced.
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I keep reading how my Porter Cable FN250B has a quick release nose to clear jammed nails, but I cannot figure out how to open it.

My fn250b has a small tab/lever just below the nail feeder (with no nails in the gun the lever will be just below the nail pusher). Push on the lever with your thumb and the nose will open. This lever is held in place with one screw. If the tab/lever breaks off at the screw or if the screw falls out the lever and its spring will fall off and the front nose will just be loose/ nails will be pushed out. If someone rigged a part to keep the nose closed, you can order the correct parts at www.toolpartsdirect.com. Not really needed however because the gun does not jam that often. Good luck
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My nail gun miss fires. seems there is not enough tension pushing the nails forward

Could be that the driver is not returning to top of the cylinder. Easy test, when the gun miss fires, remove air line, with thin metal, insert thru nose and push driver up. Retest gun. If driver was down a bit then nails will not feed. Remove head and check that driver oring is making good seal, lubed, and is not too tight or bent. Also check that lower bumper is not cracked or missing pieces. Replace parts as needed. If driver was all the way up, clean rails and pusher assembly with wd40 and follow with good cleaning with air. If pusher and rails working properly, must be problem with bad batch of nails, slightly thicker or wider head not allowing nail to easily slide. Open nose latch and check that nails slide thru easily.
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Why does my porter cable nail gun FN250B shoot

check the magazine bolts are tight and that the magazine is snug aginst the nose. also be sure you are using 16 gage brads and not 18 gage
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My FR350A fails to "fire' when the trigger is pulled. Only a small amount of air is released.

could be one of 2 things.
1. nail jammed in the nose. open up nose and clear jam
2. safety not being pushed all the way in. try pushing the gun strait down on a board, with no nails in it , and see if it fires then

ps. have you oiled your tool lately, 5 drops of pneumatic tool oil in the air input of the gun every time you use it


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