Question about Stanley Bostitch Coil Framing Nailer

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I have a stanley bostitch framing gun model f28ww and i it leaking air through the trigger what part do i need to get my gun up and gunning again?

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  • Stanley Master
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Your nailer uses a trigger valve (part # tva6 cost about $20) and is sold at www.bostitch.com or generic valves sold on ebay . If you have a source for orings, you could try to repair the valve. Remove the roll pin that holds the trigger to expose the tva6 valve. There are roll pin/pins that hold the valve in just above the valve in the body. Remove these pins and apply air pressure to gun to pop-out the valve. Use caution when you do this. Remove nails, lower pressure to gun and use glove or rag to catch valve because it could come out with force. With tva6 valve in hand remove two pins that hold valve together and remove inner plunger. The middle oring on plunger is cause of leak. Try using an oring about same size as the broken seat. It must fit pretty tight to work. If you had a small leak it could be that the firing pin orings fit too loose or  just too worn.  Use silicone lube or oring lube on the orings and the valve port. Good Luck on your repair and email if you have other questions.

Posted on Aug 06, 2010

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