Question about Stanley Bostitch N88rh Framing Nailer Driver Piston 158582

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Fires a single nail when air hose is connected

Bostitch N88RH . Can this be fixed?
Disconect the hose then connect it again and another nail fires.

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N88rh bostitch nailer fires first shot without trigger depressing


Worn orings in the gun and the trigger valve will cause the gun to fire upon connecting the air. It is a good practice to remove the nails when you remove the airline until you can replace the trigger valve. I believe that you gun uses a TVA6 valve. It should be replaced when it begins to leak or if the trigger pin seems loose and rocks from side to side. Factory valve costs about 25 dollars and aftermarket sells for about 12 to 18 dollars. Good luck

Jan 20, 2014 | Stanley Bostitch 28 Industrial Framing...

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

How do you adjust nail pressure to make sure nail goes in all the way?? Bostitch model n60fn


Some devices have a control knob where the air connects. If not, you have to wait for pressure to build up. A drop or two of pneumatic air tool oil in the inlet pipe each day helps a lot. If your compressor is too small, the hose too long, or too many people on one hose, you can have a problem.

Sep 24, 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

Fires 2 nails


Nail feeder pawl is miss alinged or wrong degree of nails being used!

Jul 23, 2010 | 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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