Question about Stanley Bostitch N88rh Framing Nailer Driver Piston 158582

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My bostitch framing nailer fires multiple nails each time i pull

I think the gun has single fire feature but i just cant figure it out

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Rather than push the nail gun and shoot one anail , try to hold the triger down and hit the areawith the tip of the gun , where you want the nail 
That will only put one nail in to the wood

Posted on May 17, 2009

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Sounds like driver is bent or worn

Posted on Mar 11, 2009

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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...

1 Answer

My gun has always from day one punches out 2 nail and jams up or not, is there an adjust ment for this problem


Nailers will double fire or at times, the driver will hit two nails with one stroke. The first issue is caused by sensitive trigger or worn orings and the second problem is caused by faulty nails (too close together in strip ) or the driver is bent slightly allowing the driver to strike the head of the second nail in line. One way to prevent double fire is to use the single trip trigger (usually white plastic). With this trigger, you must lift the gun off the work, release the trigger and press the gun against the work and pull the trigger. If you are using the black bump fire trigger and it double fires, replace the trigger valve. The issue of the driver blade hitting two nails with one stroke can be solved by examining the driver blale for damage. The blade should have a taper on the side that faces the nails. This taper is there so that as the driver hits the first nail the taper will gently push the rest of the nails slightly into the rails out of the way. If generic nails are used, make sure that the nails are designed with the proper spacing and angle. Easy test. With the gun on its side, place a strip of nails on top of the rails with the heads aligned with the angle of the rails. Move the strip of nails so that the first nail is in the path of the driver and the heads are still aligned with the rails. The first nail should align perfectly with the angle and path of the driver. If the head of first nail is in the path of the driver however the shaft of the nail is angled toward the rails, the driver blade may hit two nails. If the point of the first nail is in the path of the driver and the head is angled back toward the rails, you may have miss fire. If the nails are perfectly aligned with the rails and the path of the driver and the driver is hitting the second nail, grind more taper at the bottom inch of the driver. Good luck

Oct 14, 2011 | Stanley Bostitch N88rh Framing Nailer...

1 Answer

My N88rh shoots two nails at a time


N88rh uses a full round head plastic collated nails which are spaced apart enough that the driver cannot hit two nails at once. If your are using other nails that fit into your magazine that are closer together you may in fact drive two nails at once. If, however you are using the correct nail and the nailer shoots twice, then you probable have a very sensitive firing valve. You could change the TVA6 valve or change the actual trigger. To overcome this problem of double firing and you do not want to try changing the firing valve, you need to change the trigger to sequential type instead of bump fire type. This trigger is usually white and will only permit one nail to be fired. Check www.toolpartsdirect.com or bostitch.com for parts. Good holiday

Nov 28, 2010 | Stanley Bostitch N88rh Framing Nailer...

1 Answer

Must pull the trigger every time to shoot a nail, should be able to hold trigger and tap where i want the nail.


On some models the contact fire is not available. There is a flap that is under the actual trigger. When you press the safety in, it engages this little flap which allows the trigger to be engaged. As soon as the safety comes up this little flap falls back down disengaging the trigger.

There is an optional trigger assembly that you can put on this nailer. You need parts 174299 and 174300 to make this gun a contact nailer.

Sep 10, 2009 | Stanley Bostitch HP118K 23 Gauge Headless...

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

Bosticth framing nailer fires when hooked to air


seems like the piston is sticking. put 10 drops of oil in air inlet, and fire gun, try to work it loose.few drops of oil on head moving parts too will help.

Sep 05, 2009 | Stanley Bostitch N88rh Framing Nailer...

1 Answer

FIRES MULTIPLE NAILS WHEN AIR IS HOOKED UP.


Your trigger plunger is not seating to close off the air. Then your safety interlock is also not working properly. Needs a rebuild of all pertinant parts associated with the firing. There is a vlve in the the body that works in conjunction with the safety interlock and the trigger.

Jul 04, 2009 | Stanley Bostitch N88rh Framing Nailer...

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