Question about Air Tools & Compressors
If you have an nr83 framer, there is a ball under the trigger pin that will cause leak (# 875645). However if the leak is actually just in front of the trigger (safety foot plunger), replace outer oring of the cylinder plate inside of the gun (#877316). The nr90 framer has a much more complicated trigger. If you replaced the trigger with a new one and still leaks, check if the two outer orings to the valve were not cut as you installed the valve. Good luck.
Posted on Oct 15, 2013
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Posted on Jan 02, 2017
SOURCE: nail gun will not shoot
Not all 120psi air supplies are the same. Here are some differences. The pressure regulator has a great deal of effect on the performance of the air tool. Regulators are sold by the volume of air (cfm)that they can handle. The more cfm the larger the pipe fittings on the regulator. A 1/4 fitting regulator will restrict the air somewhat compared to a 3/8. Another difference is weather moisture is present in the air. Moisture will temporarily help seal the orings, however too much water in gun will cut the orings. The air hose and fittings will also stifle performance. Long small diameter hose will lower pressure at the gun. This can be measured by installing a guage on a T fitting on the end of the hose and watch the pressure as you fire the gun. Larger fittings and hose ID will improve performance. Finally, your nail gun should work on both compressors. To make your nailgun work at home, (assuming that there are no air leaks) lube the headvalve parts with silicone grease. (sold at lowes in plumbing dept) For best performance, replace the orings in the head valve, examine the plastic parts where the orings contact and look for wear and tiny scratches (use magnify lense). Replace these worn parts along with orings. Replace the head gasket and make sure that the body and the head-cap are not warped. Place sheet of fine sandpaper on flat surface, with cylinder removed rub the body of the gun on paper a few times to check for warp. Do same with cap. Parts are available at www.toolpartsdirect.com. Enjoy
Posted on Dec 14, 2008
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.
Posted on Mar 14, 2009
SOURCE: air leak on framing gun
You can repair this gun. Parts and breakdown are at www.bostitch.com look for service /parts and enter your model number. There you will the parts available for purchase. You will need the tva11 trigger valve. Easy to install. Remove roll pins that hold trigger and trigger valve. Remove the trigger to expose the tva11 valve. With the roll pin/s removed that hold the trigger valve you will be connecting air supply. Use heavy glove to catch valve as you apply air pressure. You may reduce pressure to airline to reduce pop-out force. Before you install the new valve check port for sharp edges and debris. Good luck with your repair.
Posted on Mar 16, 2009
Your tva11 valve can be repaired easily if you have a source for orings. I purchase orings from several companies including lowes (in plumbing dept sold in 10 pack for about dollar), www.grainger.com (oring kit metric, cost about $10) harbor freight (oring kit about $5), also orings are sold by size at bearing companies. I have repaired many of these valves by just cleaning debris and lubing with silicone paste (sold at lowes in plumbing dept used for lubing faucet orings). To attempt repair of valve, remove nails, remove roll pin that holds trigger (3mm) to expose tva11 valve. Mark position of valve in body of gun because the retaining pins fit thru an indention in the valve. Next remove roll pin/s that hold tva11 valve, they are just above the valve in the body of the gun(3mm x 30mm). You will need to apply air pressure to gun to remove the valve, however use heavy glove to catch valve because it can come out with force. (try lowering air pressure to gun for this procedure. With valve in hand, use marker to mark position of inner part in relation to outer, remove the two pins that hold valve together. Push out the inner cylinder and look at the middle oring(usually the problem, could be loose or cut) , If cut or loose replace and lube with silicone paste and re-assemble. Check outer orings for nicks, replace as necessary (usually good). Clean valve port, lube port, then re-install valve into gun and insert temporary retaining pin and test for leak. You should be good to go. Good luck and email if you have questions.
Posted on Mar 30, 2009
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