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

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I have a hitachi nr83 a2 framing nailer. I am wondering where the cylinder ring goes?

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How to replace a cylinder ring in a hitachi nr83a


If you are going to replace the cylinder ring I would recommend getting the service kit (Part #18000) and replacing all the o-rings.
I'm assuming you have already taken it apart this far but if not:
Remove the 4 hex bolts on the cap and remove the head.
Using 2 of the bolts - thread them into the inserts on the top cylinder ring and use them to twist it off.
The cylinder and piston should 'pop' up under spring pressure from below.
Using an o-ring pick, remove the o-rings and thoroughly clean the tool - replace the o-rings and the bad cylinder ring. Lubricate the new rings with the grease provided and reassemble.

Hitachi NR83A 3 1 4 34 Full Head Nailer Parts

Jan 20, 2015 | Hitachi Tools & Hardware - Others

1 Answer

Got a hitahi framing nailer with a bad leak out of the trigger. It will not fire either. Already have replaced the trigger and oiled regularly. Please help have too much invested in gun and local repair...


If you have an nr83 framer, there is a ball under the trigger pin that will cause leak (# 875645). However if the leak is actually just in front of the trigger (safety foot plunger), replace outer oring of the cylinder plate inside of the gun (#877316). The nr90 framer has a much more complicated trigger. If you replaced the trigger with a new one and still leaks, check if the two outer orings to the valve were not cut as you installed the valve. Good luck.

Oct 12, 2013 | Air Tools & Compressors

1 Answer

The piston slipped out of the housing-how do I install that?


The piston is broken if it came out.
Remove the 4 bolts on the head, remove head and you will see the piston - be careful removing it because it is easy to score the cylinder walls if it is cockeyed.
Replace the driver, lubricate the O-ring before inserting

Jan 03, 2013 | Hitachi NR90AE Full Round Head Framing...

1 Answer

I have a Hitachi nv 83 nailer,the firing pin sometimes does not return all the way back in,I have pushed it in with a screw driver and it only works for a short while.Any help it would be much...


Are you oiling your nail gun, it sounds like it's suffering from a lack of lubrication? It doesn't take much pneumatic tool oil but nail guns have to have it to work for any length of time. If you have been oiling the gun, you may have o-rings inside the gun that are worn, broken, or blown out of place. You can remove the head and check the condition of the o-rings and see if the inside of the gun is dirty. Clean the gun up and pay partucular attention to the o-rings on the bottom half of the cylinder and piston. When reassembling the gun be sure to grease the o-rings well. If you still have the same problem you may have to rebuild the gun by replaceing all the o-rings. Unfortunately Hitachi does not make rebuild kits so you have to go to their website on an aftermarket site like www.ereplacementparts.com and order each and every o-ring.

Jun 26, 2012 | Nailers Hitachi Nv83a2 3 14" Coil Framing...

1 Answer

My hitachi nail gun just fire one time and the piston stay out


This is most likely caused by the band (or o-rings) on the outside of the cylinder. It could be a trigger valve problem, but the fact that it doesn't come out until the trigger is pressed points to the cylinder rings.

Apr 22, 2012 | Hitachi 3 - 1/4" Framing Strip Nailer

1 Answer

Hitachi NR83 leaks from trigger


There are actually two trigger areas on this tool. There is the main trigger that uses an aluminum valve housing, plastic valve, a plastic ball, and most importantly a round, rubber seal under the ball. It is not an o-ring and often it gets bad which will cause the leak. Then there is a secondary trigger that the safety activates. Leaking air from there can be from a number of problems. Here is a diagram of your tool which will help you see what I am referring to.

http://www.toolpartsdirect.com/cgi-bin/schematic.cgi/hitachi/NR83A2_A2S_E2

Feb 27, 2012 | Nailers Hitachi Nr83a2 Flush Framing...

1 Answer

AIR BLOWING OUT THE TOP AIR EXHAUST


you have a problem with a seal on the cylinder or an o ring that has gone bad. I would recommend replacing all of them.

Sep 02, 2011 | Nailers Hitachi Nr83a2 Flush Framing...

1 Answer

The shaft pin on my hitachi nr83A2 strip nailer won't reset, and causes air to leak heavily out of the exhaust. tapping on the cap with the air plugged in doesn't seem to help reset the valve. What else...


Hitachi nr83 is one of the very few nailers that does not have the firing valve in the head. Instead the cylinder moves within the body of the gun. When the cylinder retracts it rests on the headcap (#877307). If the cylinder gets stuck in the down position, lightly taping on the head will sometimes reset against headcap. If the cylinder orings/contact surfaces are dry/dirty, the retraction spring will not have enough power to reset. Also, if the headcap rubber is cracked or worn the cylinder cannot make a good seal and leak as you describe. Remove the head being carefull not to tear the gasket and examine headcap and replace as necessary. If headcap looks good, pull cylinder and clean all surfaces where orings contact and remove scratches with fine sandpaper (400 grit). Lube orings with silicone paste lube available at Lowes in the plumbing department and/or swiming pool supplies area. Generally, you do not have to replace any orings unless they are broken or badly worn by grit. After you reinstall the cylinder, make sure that it moves up and down (travel is about 1/4"). Piston oring should fit snug enough to hold piston in place without dropping down the cylinder under its own weight. Parts available at www.toolpartsdirect.com Good luck and post again if you have other questions.

Jul 09, 2010 | Hitachi NR83A2 2" To 3 1/4" Full Head...

1 Answer

My hitachi nailer is not firing. Sounds as if the


This sounds like the nailer is not in the "home" position. Usually this is due to a leak in the o-ring or a lack of lubrication that is not allowing the plunger to return to the home position. If you can get an O-ring kit, I'd replace all of the orings and make sure that everything is properly lubricated. Should that not fix the problem, the next likely candidate would be the trigger assembly itself. The O-ring kit will run about $20 or so and a similar amount for the trigger assembly.

Hope this helps,

Dan

May 24, 2010 | Hitachi 3 - 1/2" Full Roundhead Framing...

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