The bostitch Framing Gun is laking air from the trigger

I have seen this on dewalt nailers also, caused by trigger valve worn. on Bostitch nailer part # tva6 remove roll pins retaining trigger and trigger valve. one roll pin for trigger and one or two for valve. With pins removed apply air pressure to gun popping out the valve. Use glove or folded-up shop rag to catch the valve as I pops out. Be sure to reduce air pressure as it could come out with force. Good luck

Worn orings in the gun and the trigger valve will cause the gun to fire upon connecting the air. It is a good practice to remove the nails when you remove the airline until you can replace the trigger valve. I believe that you gun uses a TVA6 valve. It should be replaced when it begins to leak or if the trigger pin seems loose and rocks from side to side. Factory valve costs about 25 dollars and aftermarket sells for about 12 to 18 dollars. Good luck

There are about three issues with this gun that could cause your problem. The safety contact arm not depressing the trigger pin fully, worn trigger valve (tva6), or leaking orings in the headvalve. Easy tests. Remove the nails, and remove the trigger to expose the tva6 valve. Reconnect air and with very quick and firm action, depress trigger pin all the way in. If the gun fires, adjust safety foot and trigger so that the trigger pin is depressed all the way in each time that you fire the gun. If the gun does not fire, remove the head and remove the headvalve. Examine the surface/s where Orings make contact with magnify glass looking for fine scratches. Sand with 400 grit paper. Orings must make good contact here or gun will not fire. Lube orings and surface with silicone paste lube (sold at Lowes in the plumbing department or swimming pool supply store). If no fine scratches and surface looks smooth, replace Orings in head and the tva6 valve. Good luck with your repair/

Most likely only needs lubrication. Remove head and apply silicone paste lube (sold at lowes in the plumbing department) to orings of the headvalve. Pull piston and lube oring. Should be ready to work. Good holiday

This can be caused by a defective o-ring or a trigger. Repalcemetn parts aer available here:

http://www.mastertoolrepair.com/bostitch-n64c-nailer-p-20071.html?osCsid=hl63q31pjjkg5c34jks4im8lh2

The trigger assembly is part # TVA6 and costs $20.

Hope this helps,
Dan

Could have the sequential trip trigger on the gun, there is a single shot trigger available! I believe the single shot is Grey in color!

prolly clogged, buy a rebuild kit and use it making sure all parts are totally clean before reassembly. in the future be sure to drain your compressor at least daily after use (more on wet or humid days) to avoid this

You have a crumbled trigger seal. You can order a new trigger valve through bostitch. It usually takes a couple of weeks though.. Every time I order one it is on backorder. You will need to order trigger valve kit part number TVA11 $21.40. Go to the Bostitch website click on Schematics and Parts to the left then find your model nailer in the search field and select item 53 when the parts list comes up. Click add to cart to order. Another screen will pop up and ask you if you want to checkout. Any questions please post back.

Yes your nailer will drive other sizes of nails. For info and parts go to www.bostitch.com and look for the support tab then select service parts. Here you will find parts list and manual. To remove the tva11 trigger valve remove the retainer pin (the pin is 3mm) for the trigger and remove trigger. Next remove roll pin/pins that retain trigger valve. Use heavy glove to catch trigger valve as you apply air pressure to gun. The valve could pop out with great force so try lowering the pressure to gun. Before installing the new valve, check the opening for sharp edges which will cut orings. Good Luck and email if you have more questions.

check the safty shaft and see if something could be under trigger safty causeing it to fire.