Question about Stanley Bostitch BT200K

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Trigger problems When I pull the trigger air leaks out of the trigger but the gun will not fire. Do you replace the trigger assembly or just the o-rings

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I have repaird hundreds of nail guns with a problem similar to yours. Depending on the brand and model, the problem can be repaired by checking the following. Headvalve orings should be checked for wear and any surface that the orings contact must be smooth and free from scratches. If the surfaces are scratched try to smooth with fine sandpaper and use light grease instead of oil when assembling. The safety contact foot may not be reaching high enough into the trigger to properly push in the trigger button. Check for worn spots on the trigger that may be filled in with epoxy, loose fitting trigger caused by worn roll pin or retaining pin. Some of the trigger valves as used on many bostitch nailers (tva6 valve) used a plastic pin which contacts the trigger. If this pin is loose or worn the valve should be replaced. Some tva6 valves have a vinyl looking sort of oring that fits too loose on the spool. This vinyl oring in not available by itself but if the oring fits too loose the gun will not fire and leak air. On bostitch remove the trigger and the rollpins holding the trigger valve and apply air to gun to eject valve. (use heavy glove to catch valve as it will come out with force)

Posted on Nov 25, 2008

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Usually they come in assy

Posted on Sep 26, 2008

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Posted on Jan 02, 2017

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Related Questions:

1 Answer

I pull the trigger and you get a air sound but no firing of nails . You get air release from top of gun


Could be just a lack of lubrication in the headvalve /orings or the safety foot is not pushing in the trigger pin all the way. Easy to check. Remove the head and pull out the head-valve. Apply plenty of white grease or silicone paste to the orings and the surface where the orings make contact. Install the head and test. If the gun fires then you are done. If the gun does not fire, make sure that the safety foot is depressing the trigger valve all the way in when attempting to nail. Simple test is to remove the trigger exposing the firing pin. With nails removed and air connected, with quick motion depress the firing pin all the way in. If the gun fires make adjustments to safety foot. If the gun still does not fire (with headvalve lubed) replace the firing valve core part # ca0108. Good luck

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1 Answer

Hitachi 45ab blowing air out of trigger


If air leaks thru trigger as soon as you connect airline, replace the vinyl ball under the trigger stem. If air leaks when you depress the trigger, replace the small oring on the trigger stem. If air leaks slightly from plunger in front of the trigger valve, problem is inside of the gun. Remove the head and pull the large circular plate. Replace the large outer oring. Good luck

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I have a Bostitch N80S stick framing nailer that leaks air from the trigger area. I replaced the entire trigger valve with a new single fire trigger to see if the old bump fire trigger was the problem


Remove the nails and take off the trigger to expose the trigger valve (usually part # tva6). Connect air and spray soapy water on the valve to determine if the air is leaking from the center of the valve or around the outer edge between the body and valve. If leaking from the center, could be defective valve or debris under oring. Pop out the valve and examine internal parts for cut oring or defect. If leaking from between body, you could have cut orings installing the valve. Make sure that there are no rough edges in the body of the gun. Bump fire or single fire happens with the trigger type not the valve. Bump fire trigger is usually black metal and single fire trigger is light color plastic. Good luck

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Hitachi framing gun leaks air from trigger when pulled


use the lube that came with the kit, you can replace everything correctly but if oring gets pinched it will still leak

Aug 14, 2012 | Hitachi NR90AE Full Round Head Framing...

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I have a bostich rn46 wont fire a nail just leaks air.put new trigger assembly in


depends on where the air is leaking from, if the top of cap you have a pinched o ring, from the bottom of tool you have a problem with the cylinder or seal, the trigger assembly has a broken o ring. Let me know where the air if coming from and I will try and help.

Mar 13, 2012 | Stanley Bostitch Nail Gun

1 Answer

Gun will not shoot nails completely;no matter what wood,thickness,etc.they drive all but 1/2"


May be due to broken tip. Easy to check. Remove nails and leave door open. With door open, lightly tap the nose of the gun against coiled rubber hose or soft wood. The driver should stay at top position. If driver falls to bottom of the cylinder, replace piston oring. Now press nose of the gun against old coiled up air hose or soft wood and squeeze and hold trigger. The gun will fire and the driver should stay in the down position untill you release the trigger (if not single fire trigger, if single fire trigger remove trigger and press the trigger pin with finger). While the driver is down, make sure that the tip extends past the nose about 1/4 inch (if air leaks past the nose in this position, replace lower bumper). If the driver does not extend past the nose, replace driver. Good luck

Jun 24, 2011 | Stanley Bostitch N75c1 Coil Sheathing...

1 Answer

My n59fn has huge air leak by the trigger and will not function


I had this problem once and the trigger was defective internally. You should be able to purchase a replacement trigger assembly at the link below.

Link: http://home-and-garden.become.com/tva6-trigger-valve-assembly--compare-prices--c205367842

Cost: $19.99

Hope this helps,
Dan

Apr 22, 2010 | Stanley Bostitch BT200K

2 Answers

Air leaks arond trigger when depressed, but no nail fires.


Where does the air leak out from? If it leaks from the trigger DeWalt makes a trigger valve assembly part # 641006-00 list 8.89 BUT if it leaks from other areas we have to look into it deeper. If it is just the trigger valve let me know and I will give you instructions how to remove and install the new one.

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