Question about Porter Cable FR350A Factory Reconditioned 3 1/2" Round Head Framing Nailer Kit, 70 120 Psi
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Posted on Jan 02, 2017
Could be a couple things, first are you using the right nails in the gun e.g. collation and degree. Second do the nails move freely in the magazine and how is the pusher spring on the nail does it have enough pressure. Then I would unplug from air remove all the nails andjust tap the nose on a piece of wood and does the driver drop? If so the piston Oring is worn and needs replaced, but if you do that I would recommend replacing all the rubber. Let me know and I would need the exact model number to come up with parts.
Posted on Jan 25, 2009
I have worked on many fr350 nailers with the problem that you are describing. The fix is usually simple. I just remove the head and pop out the headvalve by using an air nozzle on the small port drilled into the mating surface. Be carefull because the headvalve could pop-out with force. Clean all surfaces and use silicone paste to lube the orings and the surface of the head where orings contact. Check for cut orings or defective upper bumper (cracks or cuts). Also look for small scratches with magnifying lens on the surface where orings contact. Sand with very fine paper (300 grit). Re-assemble and you should be good to go. Silicone paste is sold at Lowes in the plumbing department. It is used to lube orings in faucets. Parts are available at www.toolpartsdirect.com
Good Luck on your repair and email if you have questions.
Posted on Mar 20, 2009
I have seen this problem on several brands of nailers. The solution in most cases was to make sure headvalve orings are sealing correctly. Here is a simple test. Remove the head and place on workbench with gasket surface facing up. Push headvalve all the way in with your thumbs then cover the vent hole with finger and release thumb pressure to headvalve. Vacuum should keep headvalve down untill you release finger at vent-hole. If vacuum does not hold, remove headvalve and examine surfaces for fine scratches and/ or make sure of correct size orings (headvalve should be very snug). Remove scratches with extra fine paper (300-400 grit). If headvalve holds, remove headvalve piston and piston stop. With headvalve spring removed, push piston stop into headvalve and make sure that the piston stop fits snuggly into piston. Also make sure piston stop is not damaged or cracked. A loose fitting piston stop will cause multi-fire. Replace as necessary. Upon re-assembly, lube all rubber parts with plenty of silicone lube (not oil, wipe clean all parts before lubing). Silicone paste/grease is sold at Lowes in the plumbing department (Danco Brand). Good luck and email if you have other questions about this gun.
Posted on Jun 16, 2009
the triggers are held in place in the handle with two roll pins. the trigger itself operates off a hinged paddle inside the trigger. this paddle won't operate unless the safety is depressed. both safeties have a return spring. if yours are missing nothing will work. go to porter cable parts site and purchase the correct parts
Posted on Oct 22, 2009
it sounds like there is a jammed nail in the nose/magazine or possibly a bent or broken driver. UNPLUG the air and remove the top cap carefully and see if the piston is twisted in the cylinder. Let me know and I will try and find you a breakdown for this tool
Posted on Nov 06, 2009
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