I have a 16 ga D51256 air finish nailer.I WOULD LIKE THE DRIVER blade kit D512565. I have talked to a service center tool guy who cross referenced and gave me the price and availability for me to pick up.The ladies who do the computer get the same not available discontinued I GET AT THE WEB SITE . What gets me the part?

1) Check to see if the drive belt is intact
2) Check and make sure the driver blade is not bent
3) Make sure return device is properly clipped down so the driver can fully retract
If you don't have success, please let me know more details of what the tool is doing and I will try to talk you through it.

Time to replace a few orings in the trigger valve. There are at least three orings made of vinyl that fail, two on the trigger pin and one on the plunger.

Call distributor - they may send this for free

Locate the part number online by searching for the tool's model number "parts list" Once you have that information you can visit you local Fastenal and they can order it for you. Paslode will not sell directly to the public on spare parts. They will point you in the direction of a service center. I only know of two: Fastenal and Fasteners Inc.

I replace the trigger valve in my dewalt air gun It is still leaking air I use the right kind of grease on it

make sure that the slide is putting pressure on the nail oil the slide

Possibly, I would make sure that you are using the right guage nails first with the proper collation. You can go to Dewaltservicenet.com and download a breakdown for the tool and also a users manual.

try to regrind the driver blade, there should be a small nick on the driver blade where the nails are fed in, if the driver is to fat it will catch 2 nails,and cause nail jambs.

Here's a link for PDF file download of your manual.

http://www.dewaltservicenet.com/documents/English/Instruction%20Manual/Porter-Cable/N027636,DA250C.pdf

First - the air pressure has to be high enough - check the regulator on the tank to make sure it is delivering in excess of 60-70 psi (which I am sure you have already done).

If you have dry fired these guns (i.e. shot them off with no nails in them while you were lubricating them maybe) the mechanism inside could be damaged. I had that happen to one of my nailers (same brand). That was when I learned not to dry fire them...

Since both of them are not working though I would be more inclined to look at the air supply first.