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Hitachi 83a drive pin does not return after firing

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Assuming you have an NR83A
The main reason the driver won't return is the Cylinder exhaust ring is missing, broken, or improperly installed.
Also check to make sure there is not a nail jammed in the nose inhibiting the driver from returning.
My recommendation is to install a Service Kit #18000 which includes the exhaust ring.

Posted on Apr 17, 2014

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It fires but won't no nails


Open the feeder Make sure the firing pin high enough return a little extra oil can sometimes be the difference if it is a very small tacker is possible that the air outlet filter is closed beaten a cylinder seal but also the driving force of the nail feeding or regular yet if the wrong nail is used.

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It could be one or both of the return springs are damaged (this typically happens when you fire the gun without it being against timber, had a young apprentice firing across a worksite for fun which wrecked the springs), could also be that the firing pin is bent or there is an obstruction in the cylinder preventing the pin which is fixed to piston from returning correctly.

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Bostitch F28ww nail gun does not cycle. There is no air leak or any sound when I press the nose down and pull the trigger. It is like it has no air at all. I was using it, it fired 2 nails at the same...


It sounds like your drive pin is jammed in the barrel. Can you see that moving freely? One of the two nails it fired may have lost a piece and is jammed in the barrel between the drive pin and barrel.
If this is the problem, You'll need to take a sturdy "drift pin punch" and hammer to drive the drive pin back down into the nailer. (I use an old drive pin from a discarded nailer as a drift pin punch)
Once the piston and drive pin are free again, the nailer should work fine.

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SB 1842bn


When a firing pin won't return it's usually caused by damaged o-rings inside the gun. The most likely culprits are the o-rings around the outside of the cylinder or the rings on the drive piston. Another cause could be a cracked cylinder or bent driver. Remove the cap on top of the gun and check the condition of the o-rings, cylinder and driver. You'll have to order any parts that need to be replaced as Bostitch doesn't make a rebuild kit for this gun. Don't forget to lightly oil the o-rings with pnumatic gun oil when reassembling the gun. Most pin and finish nailers say they are oil-less but they still need a drop once in a while to keep the o-rings from being damaged.

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I am tring to dowmlaod a user's manual for the nr 83a nail gun.


go to hitachipowertools.com and type in the model number nr83a2 and then click on the pic it will direct you to a tech page and scroll about 1/2 way down to the instruction manual link. The manual is 52 pages long if you download it complete. If you need more assistance let me know and if I have helped you with your request would you please vote accordingly. Thank you

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Paslode framing nailer will onley fire one time and wont return to fireing pos. fires first nail great . started this problem after cleaning


Did you remember to lube the upper cylinder, lg 0-ring and silicone the striking pin----sticking may prevent returning to firing position

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Have you oiled it while in use ? You need to take the airhose off and put a few drops of air tool oil in the fitting and then try it a few times. hope this helps you

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