NEW BRAD NAILER ONCE LOADED WILL NOT WORK

When was the last time you oiled the gun?

Same problem with mine. Right out of the box. Will shoot the first Brad after that nothing. Should have purchased another brand

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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HOW TO USE YOUR ELECTRIC STAPLER/NAILER
TO LOAD STAPLES

1. Unplug tool, (fig. 1)...(place on/off switch in "off" position, (fig. 2).)
2. Place on/off switch in "off' position.
3. Select proper staple length.
4. Use only staples identified by stock numbers on next page. Substitute staples may cause jamming.
5. Hold tool upside down. (Squeeze latch and pull, (fig.3).)
6. Drop staples in channel, legs facing upward. Push latch back in to lock in place, (fig. 4).

TO LOAD BRADS

1. Unplug tool, (fig. 1)...(place on/off switch in "off" position, (fig. 2).)
2. Use only brads identified by stock numbers on next page. Substitute brads will cause jamming.
3. Look for the image of a brad nail on the front side of the tool (fig. 5). Load brads into this side only.
4. Hold tool upside down (Squeeze latch and pull, (fig. 3).)
5. Drop brads into the channel, tilt the tool so the brads lay against the channel wall, (fig. 5).
Push the latch back in watching that the brad strip does not fall over.
6. Use High/Low power when driving brads.


TO STAPLE OR NAIL

1. Make sure the on/off switch is in the "off" position, plug stapling tacker in.
2. Turn tool on by switching to position 1 which is the "on" position and hold firmly against work surface to
engage safety mechanism.
3. Apply adequate pressure on the top of the knob (fig. 6.) while the trigger is pulled.

You can find the figures mentioned above at the following link:

http://bdk.force.com/FAQ/servlet/fileField?retURL=%2Fapex%2FPKB_Article%3Fid%3DkA0C0000000CdtPKAS%26brand%3DStanley%26returl%3D%252Fapex%252Fpkb_search%253Fbrand%253DStanley%2526mode%253D0%2526model%253D%2526sortby%253D0%2526terms%253DTRE550&entityId=ka0C0000000CdqqIAC&field=File_1__Body__s

Sounds like a trigger seal. I assume this is an oil-less brad nailer as that is the standard. You should be able to find the seals at any local hardware store including Home Depot or Lowes. If you can't find the portercable O-rings just grab the random assortment from Bostitch which is usually readily available. Refer to your parts manual for the correct size/gauge

It sounds like your gun has jammed. The fix isn't hard. First, though,make sure that your compressor is putting up sufficient pressure. Most of my jams happen when I drive brads and forget to turn the compressor back on! If the pressure is good, you'll need to check for a jammed brad. Disconnect the gun from the compressor. Pull back the slide and remove the brads from the magazine. At the front of the nailer, you'll find a cover, close to where the brads exit the gun. Open the cap and it will reveal a tab that will give you access to the nailing slide. Your gun probably came with allen wrenches, and they may be located on the gun, or in the case. Mine are along the slide, tucked in, and look like a part of the gun. You'll need an allen wrench (most likely) to remove the two allen screws that hold the cover assembly to the gun. Remove the screws, making note how the piece comes off. With the piece off you should be able to see where the brads come to the nailer from the magazine. Look for a hung up brad here. If you note a silvery piece of metal in front of the magazine, fear not, that is the hammer slide. The compressed air powers the slide down, peeling a brad from the magazine and driving it in. If necessary, you can gently press the slide back up. Try not to bend it. Locate the jammed brad(s) and wiggle them out of the gun to clear it. Sometimes it is easier to push them back into the magazine and shake them out. It takes a little finessing to get it right, but perservere. Reassembly is the reverse of the break down. Oil your gun daily. I put a few drops of oil into the air inlet at the gun before I connect the air line, and then drive a few brads into scrap wood.
Hope this gets you going on your project.
Best regards, --WoobieDog--

Your anvil is not returning to the home position to allow the brad to index into the receiver. Try and push the anvil up all the way to the home position. If that works, then you need lubrication, new return spring, etc. All related to the anvil firing.

Where does the air leak out from? If it leaks from the trigger DeWalt makes a trigger valve assembly part # 641006-00 list 8.89 BUT if it leaks from other areas we have to look into it deeper. If it is just the trigger valve let me know and I will give you instructions how to remove and install the new one.

18 guage nailer has a very thin driver and plastic cylinder which bends or breaks easily. Remove the head noting all the parts in the head and remove the piston which should be at the top of the cylinder. Check for broken or bent shaft. Most likely broken and jammed in cylinder. Parts are not expensive. Check WWW.toolpartsdirect.com for diagram and parts