Question about Hitachi NR83A2 2" To 3 1/4" Full Head Framer with Depth of Drive

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My hitachi nra 83 a2 doesnt fire ...when you plug it to the air hose ...air comes out of the top ... it doent fire

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You need an o-ring repair kit. the part number will be located in your owner's manual. a blown upper o-ring is usually due to leaving it out in the weather for extended periods of time or hooking it up to a compressor with a psi regulator set over 120.

Posted on Nov 17, 2008

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1 Answer

I have a hitachi nr90ae that will not fire. Depress nose and trigger and gets nothing. What's next?


Remove nails and air supply. Firmly depress safety foot against work with trigger depressed and make sure that firing pin is pushed all the way in. If firing pin is being activated by safety foot most likely problem is stuck cylinder or head valve. If the gun has been dropped the cylinder my jam. Remove the head and make sure that the cylinder and or headvalve moves and that the driver is not stuck in place. Good luck

Mar 07, 2013 | Dewalt Tools & Hardware - Others

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Why won't feed plunger advance nails?


The two hex head screws on the very top of the head hold the air deflector and attach to the headvalve (the part inside the head with rubber coating, this headvalve has a gasket under that should be check for proper alignment ). Other small screws that look like set screw are only plugs that are removed to install auto control hoses in factory work. These are only plugs so just put them in a few turns with locktite.

Jan 23, 2013 | Hitachi Tools & Hardware - Others

1 Answer

Hitachi nr 90 gc2 nailer wont fire


Various reasons, secondary switch faulty. gas out of date, gas is colld, iar leak, faulty spark unit.

Suggest you get it checked out at a repair centre.

Jan 04, 2013 | Hitachi NR90GC2 Cordless Gas Clipped Head...

1 Answer

I have a nv45ab roofing nailgun & it blows air out of exhaust on top any sug.


Hitachi nailers use an unusual design of actually moving the cylinder to fire instead of moving the headvalve. If the cylinder gets stuck in the open position (down), air will leak out of the head. To reset the cylinder, remove the nails and connect air supply. With air connected, lightly rap the head of the nailer against coiled air hose or soft rubber (too hard of a hit could damage the head). If after a couple of hits air still leaks, remove head and check headvalve for cracks. Replace as needed. If headvalve rubber looks ok, remove cylinder and clean/lube. If cylinder has fine scratches where orings make contact, sand smooth with 400 grit sandpaper. Lube with silicone paste, white grease or nailer oil.

Jul 29, 2011 | Hitachi Tools & Hardware - Others

1 Answer

I changed the feeder springs in my hitachi NV83 a2 and it wants to double fire and jaming up the driver with seconded nail. it was skip nailing before i changed springs. any help you could give me would be...


Your nailer is a very heavy duty nailer with very powerful blow. Works best with full size nails, not 2 inch range that are used in fencing, they are not spaced correctly for your gun (like hitting number 6 nail with sledge hammer). Open side door and remove the nails, leave the door open and dry fire gun against piece of rubber or old coiled air hose. The driver should return all the way up between shots and the feeder should move back then forward just as fast as the driver moves. If the feeder seems to move in slower motion then pull feed piston and replace orings and remove debris from feed cylinder. If the driver seems to stick out further than normal then lower bumper could be breaking up causing debris to enter feeder. Make sure that the driver is not bent and has a squared bottom, if rounded, remove and grind square. Finally adjust the depth control up or down slightly and bump fire for test, do not place gun on the work then fire. good luck

Jun 16, 2011 | Nailers Hitachi Nv83a2 3 14" Coil Framing...

1 Answer

Is all air conditioner split unit come with gas show me for free


Split air conditioner units usually do not come with the freon installed, because you need to run the hoses through holes in the wall to connect the inside evaporator with the outside pump and condenser.
So you drill the holes, install the units, connect the hoses, evacuate the air and moisture out, and then fill with freon.

Jun 06, 2011 | Hitachi NT50AGF 2Inch TCleat Oilless...

1 Answer

I pull the trigger and get a rush of air but no nail shot. It has been working fine for the last several days. I've got it running on between 75 and 80 psi.


Place two drops of light oil into the gun at the air inlet, and re-connect the hose. Fire your gun several times into scrap wood.

Best regards, --W/D--

May 31, 2011 | Hitachi NR83AA3 3 1/4" Clipped Head...

1 Answer

As soon as air hose is connected the firing rod extends, stayes extended, and air continues to come out the vent holes at the top of the gun. this problem started after i replaced all the o-rings and...


check for a stuck firing valve or pinched o ring in the cap area, usually this is caused by the trigger valve but look in the cap, Did you lube all the o rings before installing??

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1 Answer

Nail gun is miss fireing sometimes might only fire 1 in 4 nails fired


remove all the nails and remove the air hose. BUMP the tool on something and does the driver come down on its own if so it needs new o rings. also take a look at the feed pawl for a broken spring that would prevent it from feeding nails and lastly look at the coil of nails to make sure they pull freely. Let me know if you need more assistance.

Sep 10, 2010 | Hitachi Tools & Hardware - Others

1 Answer

My nail gun hitachi nr83a2 only fires a nail half way


the blade assemblies for the A and A2 are the same.

the pison bumper should not be attached to the driver, if the bumper is moving around inside the gun i suggest checking to make sure it was properly seated when the gun was reassembled. if it was, i suggest ordering a new bumper.

a cracked bumper will usually cause a broken driver.

Oct 25, 2008 | Hitachi NR83A2 2" To 3 1/4" Full Head...

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