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My Bostitch s32sx does not fire all you hear is air pressure when you pull the trigger and tap it to the work surface piston will not return either

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  • Air Tools & ... Master
  • 1,383 Answers

Could be lack of lubrication in the headvalve or safety foot is not pushing trigger valve all the way up. Easy test. Remove the nails and remove the trigger to expose the trigger firing pin. Connect airline and with a very quick motion depress the firing pin all the way in. If the gun fires, then adjust the safety foot. If the gun does not fire, remove the head and pull out the headvalve. Lube the orings in the headvalve with plenty of white grease. Reinstall head and repeat test above. If gun still does not fire with plenty of grease then time for oring kit. Also make sure that the check band is installed around the lower part of the cylinder. This band is what causes the piston to return to top. Usually an oring or rubber band covering series of holes. Good luck

Posted on Dec 11, 2014

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6ya6ya
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Posted on Jan 02, 2017

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  • 1383 Answers

SOURCE: BOSTITCH 2IN1 VENTS AIR AND WILL NOT FIRE

Your nailer is one of many bostitch nailers that use the TVA6 trigger valve. With time, this triggering valve will wear and act as you describe. Some TVA6 valves have a green plastic pin that wears and becomes shorter. (some have a metal pin) The safety foot and trigger can also cause problems. Try the following to determine the problem:
Remove the roll pin that holds the trigger in place to expose the tva6 valve pin. Remove the nails from the gun and connect airline. Place the nose of the gun against wood or hard rubber and with a very quick motion depress the trigger pin all the way in. If the gun fires then the problem is that the safety and the trigger are not depressing the tva6 pin all the way in. Check for worn parts and replace as necessary.
If gun does not fire remove the head from the gun and check headvalve for worn orings or very tiny scratches where orings contact surfaces. Use a magnify lense to check surfaces if necessary. Use very fine sandpaper to remove scratches (300 grit). Lube orings with silicone paste (looks like vaseline, sold at Lowes in plumbing department it is used to lube faucet orings) and re-assemble. This will make your nailer regain lost power.
Finally, when the tva6 valve fails, air will leak out valve at a high rate, however as the valve wears it will become troublesome if you have a plastic pin. To replace remove trigger then remove roll pins that retain valve. Use a thick glove to catch the valve as you connect to air supply. Use caution because it will come out with force. You may want to reduce pressure to gun when you do this. Good luck with your repair and email if you have question.

Posted on Feb 24, 2009

maadgar
  • 44 Answers

SOURCE: My framing Bostitch air gun , model N95RHN blows

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

Posted on Nov 14, 2009

  • 1383 Answers

SOURCE: stanley bostitch double fires. It is an older

You did not list your model number, however most bostitch nailers use the tva6 trigger valve. As this valve wears it will be erratic. Examine the firing pin that makes contact with trigger. If it looks worn or wabbles from side to side, then time to replace. To remove valve first remove trigger by removing roll with 3MM punch. Next remove one or two roll pins just above the valve, also 3mm. With roll pins removed air pressure will pop out valve. Be carefull because valve can come out with force, use glove or rag to catch. Parts available at www.toolpartsdirect.com, or generic valve at www.ebay.com. Good luck

Posted on Sep 19, 2010

  • 1383 Answers

SOURCE: Bostitch RN46 will not fire nail, only releases

Gun will not fire if air is leaking past orings in head /headvalve or safety /trigger is not pushing trigger pin all the way into trigger valve. Test: Remove trigger to expose trigger valve pin. Remove nails. Place nose of gun against thick rubber mat or coiled rubber hose to absorb blow of driver. Very quickly and deliberately press trigger pin all the way in. If gun fires, safety foo or trigger is not pushing trigger pin all the way in. Make adjustments or replace worn parts. If gun still does not fire, remove head and pull out headvalve. Apply lots of silicone paste lube on the orings and the surface of the head where orings make contact. Reinstall head and test as above. If the gun fires then orings were leaking. Replace orings and sand any scratches on body of cap with very fine sand paper. Parts are at www.toolpartsdirect.com Good luck

Posted on Mar 17, 2011

  • 4234 Answers

SOURCE: Bostitch N80C. When I connect air to gun it leaks

Most likely a seal is leaking which is preventing complete reset of the tool to the firing position. Follow the instrucitons in the link below to get to a site that will provide a diagram of the gun and the parts list. I would recommend replacing all of the o-rings and a good cleaning and lube.

Dan

Link: http://www.fixya.com/support/r5812776-bostitch_nailgun_dis_assembly_assembly

Posted on May 02, 2011

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1 Answer

I have a Bostitch N88RH stick nailer with contact trip. For some time, when I connected the nailer (without actuating the trigger or tip), it would fire a nail. Now, it will often fire a nail when first...


Usually, if you change the trigger valve (TVA11) the nailer will function as before. This problem could be also be caused by air leaking past the orings in the headvalve (3 orings). Easy to check. Remove the head and pull out the headvalve (white plastic piston). Look carefully at the cylinder where headvalve orings make contact and look for smooth surface. If scratched or deep groove, replace head or try to smooth out with fine sandpaper. You can make the orings fit more snuggly against the cylinder by using one or two turns of Teflon tape under the oring (just the outside orings). Apply white grease and replace head to test.
As for the trigger valve, remove the trigger to expose the valve. Check if the trigger pin moves from side to side or seems loose. If it seems loose replace the valve. If the valve has a metal pin (many have plastic (metal better)), you can pop out the valve and just replace the orings on the inner plunger. If plastic pin replace the valve. To remove the valve, remove the roll pins in the body of the gun (3mm) and apply air pressure to the gun. Use lower pressure than normal and use a glove or bunched up shop rag to catch the valve as it is pushed out by the air. Could come out with force depending on the pressure. Note the slots on the valve as they relate to the roll pins so you can reinstall correctly. Good luck.

Sep 01, 2013 | Stanley Air Tools & Compressors

1 Answer

Bostitch N62FN air leaks out the cap and it wont pressure up or fire. Is the piston ring solid


Glad that you repaired your gun. The piston oring is the only oring in the gun that can have slit and still work fine. It works like a piston ring in a motor. Small ring gap is ok just as long as the piston does not drop down the cylinder under its own weight. The piston oring does not hold pressure, it only reacts to pressure when headvalve opens. When this series of gun leaks air, it is usually due to headvalve orings (lube with white grease), Cylinder seal loose or broken, or trigger valve oring splits (tva6 valve). Good luck

Mar 29, 2013 | Stanley Piston Driver Assy Bostitch N62fn...

1 Answer

I have a Bostitch N60FN air nailer that won't fire, I have replaced tva6 and piston stop, I have no air leaks but when I push trigger I get small puff of air from trigger valve but nothing else.


Easy test, remove the trigger to expose the firing pin and remove the nails. With air connected very quickly depress the firing pin all the way in. If the gun fires, the safey foot is not pushing the pin all the way in. Make adjustments to correct. If the gun still does not fire, the headvalve orings are leaking internally. Remove the head and pull out the head valve. Make sure that there are no fine scratches on the surface where the headvalve orings make contact to cylinder in head. If scratched, remove with very fine sandpaper. Remove the large outer headvalve orings and wind a couple of turns of teflon tape in the groove and replace the oring. This will make the oring fit more snuggly against the head. Lube with white grease and test. Good luck

Dec 28, 2012 | Air Tools & Compressors

2 Answers

Bostitch N80SB won't reset after firing


Most likely just needs piston oring. Remove nails from the gun and point nose of gun up then down again. If the piston travels up and down in the cylinder, replace the oring. The piston returns to top with air pressure and needs good snug piston oring and good lower bumper (if bumper is cracked or missing pieces ~ replace ). Be sure to lube the orings in the headvalve with silicone paste or white grease. Part # ORK11 oring kit will reseal the gun. Good luck with your repair.

Jun 02, 2012 | Stanley Air Tools & Compressors

1 Answer

My bostitch n88rh framing nailer will fire when pointed down but wont fire pointed horizontal.


Nailers are made to use in any position so must be something simple to fix. Most likely safety contact foot, to test, remove the nails, remove the trigger to expose the firing button on the trigger valve. Connect air and dry fire onto wood or old coiled rubber hose in various positions. If the gun tests ok then carefully examine safety foot mech. and trigger for loose components missing guide or roll pin. The contact foot must push firmly up on the lever within the trigger thus pushing on the firing button. If the safety foot and trigger are in good conditon and working ok, then problem is within the headvalve and piston orings. To test piston oring, remove airline and nails, point nailer up then down again. The piston should stay in the top position. If the piston moves up /down with movement of gun, replace piston oring. If piston oring ok, remove the head and pull out the headvalve. Apply plenty of silicone paste or white grease to orings on headvalve and reinstall and test. If tests ok, then problem is worn orings in the head /headvalve. You can keep lubing or replace orings. Examine the surface within the head where headvalve orings make contact. If there are many fine scratches, even new orings will not work very well. Try to remove scratches with very fine sandpaper. Good luck

Apr 29, 2012 | Stanley Bostitch N88rh Framing Nailer...

1 Answer

My bostitch N88RH is not firing nails


May occur when headvalve or driver is stuck (will usually make a pop or click when tigger is depressed), or tigger valve has failed or safety not actually touching trigger firing pin. Easy test, remove nails, remove trigger by pushing out 3mm roll pin or bolt to expose the firing pin. Pull back nail feeder and place the nose against piece of wood ~ depress trigger with very quick motion with finger. If it fires, reinstall trigger and adjust safety foot so that the firing pin is pushed all the way in. If does not fire, replace trigger valve (usually tva6) or remove trigger valve and replace the 3 orings on the inner plunger. If you hear a pop or click when you do test above, remove head and lube the headvalve orings with white grease or silicone paste.

Nov 17, 2011 | Stanley Bostitch N88rh Framing Nailer...

2 Answers

I have a bostitch n62fn finish nailer that wont fire. when i pull the trigger, air comes out of the trigger assymbly. the gun is not jammed, and is receiving correct air pressure.


this may sound stupid but are you pushing it against the wood when pulling the trigger. it has a safety switch on the front so it will not work just by pulling the trigger.

Nov 12, 2011 | Stanley Bostitch N62fn Finish Nailer Parts...

1 Answer

Stanley bostitch double fires. It is an older stick feed. Works fine when I hold the trigger and tap the tip. But when I press the gun into the wood and pull the trigger it double fires. Gun is older, but...


You did not list your model number, however most bostitch nailers use the tva6 trigger valve. As this valve wears it will be erratic. Examine the firing pin that makes contact with trigger. If it looks worn or wabbles from side to side, then time to replace. To remove valve first remove trigger by removing roll with 3MM punch. Next remove one or two roll pins just above the valve, also 3mm. With roll pins removed air pressure will pop out valve. Be carefull because valve can come out with force, use glove or rag to catch. Parts available at www.toolpartsdirect.com, or generic valve at www.ebay.com. Good luck

Sep 18, 2010 | Stanley Bostitch Coil Framing Nailer

1 Answer

Fires like a machine gun without pulling triger. Close call


Bostitch N60FN finish nailer:
I replaced the o-rings and reassembled now when I put air to it the driver does not return and when I pull the trigger I get a "puff" sound.

Sep 07, 2009 | Stanley Bostitch N88rh Framing Nailer...

1 Answer

Firing Pin doesn't return


The piston is returned to its firing position by air from the trigger valve after the piston has fired. It relys on the piston sealing against the bumper at the bottom of its stroke, if the bumper was damaged when the driver shattered or it was put in upside down the piston will not return. Also the piston uses air fed into the return chamber from the little holes in the cylinder, if the seal over these holes is damaged the piston may not return. Basically change the bumper and the check seal on the cylinder.

Jul 28, 2009 | Stanley Bostitch Coil Framing Nailer

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