Question about Hitachi KNR90AE Round Head Framing Combo Kit With Compressor, Nail Gun and Hose

1 Answer

Misfires new gun

Stops after 50 nails

Posted by Anonymous on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 233 Answers

If your using refills that have wire holding the nails together.
Check to see if bits of wire, debris is collecting in around the striking hammer. I switched to paper and never looked back. Must have gone through 5k worth of nails and rarely jams. Other things to check,
1. Check the striking hammer, make sure it is not bent or damaged.
2. Check air pressure, Low pressure can cause jamming, misfires.
3. If the tool needs pneumatic oil, 2-3 drops before you start good rule of thumb.
4. Check spring return. Sufficient pressure must be maintained or the nails will not feed properly. Misfires, incorrect feed, jamming etc.
I had a Hitachi brad nailer and it was horrible. Fire 1 brad nail would jam or misfire. Did everything I could think of nothing worked. Put it up, got a Rigid brad nailer and never looked at the Hitachi again. :)
Sometimes you just get a lemon! (PS I understand you have a framing nail gun. Brad nail gun above is used for an example)
Hope this helps

Posted on Mar 29, 2014

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Hitachi nail gun


If gun firing but nails not being driven could be one of two basic problems:
1. Nail jammed in magazine not allowing nails to move up.
Empty magazine, does follower move to top of magazine. Push gun against work piece, does fan motor start? Yes - jam in magazine or lock out bar not operating. (this would allow nail un to fire when out of nails)
2. Piston/driver not returning fully after firing, hence driver blade on top of next nail instead of behind it. This could again be caused by a jammed nail or just a nail head. Another case of not returning is the combustion chamber not making a good seal, check O rings on framer (they are steel rings on bradders) it may just need a good clean it is surprising how dirty they can get and if not cleaned a build up of dirt could break a seal. If not been cleaned for a long time worth checking piston rings, worst case scenario dirt builds up around the rings and stick fully in requiring new piston if the rings will not come out.
Nail guns work on the principle that an explosion pushes the piston driver forcing a nail into the work piece, after the explosion a vacuum is created and it is this that 'sucks' the piston/driver back up the cylinder.

Mar 27, 2014 | Tools & Hardware - Others

1 Answer

NO NAIL IS COMING OUT WEN YOU PRES THE TRIKER


I presume the gun fires but no nail is ejected. A possibility is jammed nails in the magazine. Do you see a mark in your work piece of the driver blade? If yes then it is most likely jammed nails. If not could be a broken driver blade. If gun does not fire could be gas problem. (check in date, yes it does have a use by date), another cause of not firing is a broken wire particularly around trigger switch (switch is on trigger and hence the wires are flexing every time trigger is pressed). Another cause of not firing is a brass spring clip in handle assy if this breaks it stops the gun firing. Recently I have had more broken wires than anything else on these guns. Worth noting is that the Stanley Bostitch nail guns suffer the very same faults. Also note they are the same gun just different colours so you can fit Hitachi parts to the Bostitch and they are cheaper.

Feb 12, 2014 | Tools & Hardware - Others

1 Answer

I have a Senco SN70 framing nail gun. The gun


One question is do you regularly put oil in the gun? Also you need to make sure that the screw holding the 'clip' near the barrel is tight and not loose. These are the 2 main problems when a gun is misfiring.

Oct 02, 2013 | Senco Air Tools & Compressors

1 Answer

My Senco 700XL Nail gun misfires a lot!


The 700XL is a good gun worth repairing and fairly easy to work on. You should be looking for two Senco rebuild kits, part number YK0243 for the top end and YK0244 for the bottom end. After installing all the parts from these kits you'll have a brand new gun. To take it apart, remove the four screws holding the head cap on. Keep track of how everything comes out so you get back together the same way, the kits have good instructions to get all the right o-rings in the right places. The o-rings on the long skinny trigger valve are hard to get off and on but they will stretch enough to do so. Use the assembly lube liberally on all o-rings. The center piece in the cap can be pried out gently with a screwdriver and is hard to get back in but make sure it is fully seated and straight in the cap when you put it back together.

Mar 19, 2012 | Senco Air Tools & Compressors

1 Answer

My paslode air framing nailer model 5350-90s is loosing air out of the trigger valve when I press on the trigger and the nail does not fire. What is the problem ?


Sounds like a bad O ring. There are rebuild kits you can get with a new set of O rings. Or you can have it done for about $30-50.

Jun 09, 2011 | Heavy Duty Stanley Bostich Heavy-duty...

1 Answer

Dewalt cordless nail gun fires but doesn't seem to feed the nails very well, alot of misfires.


Try another brand of nails -- maybe your gun doesn't like those. Also, blow any dirt out of the nail magazine.

Sep 25, 2009 | Dewalt DC616kn 18 - volt 16 - gauge...

1 Answer

How do you safely remove jammed nail gun?


Not sure exactly what Bostitch framer model you have, but if it is powered by compressed air, as long as you remove the air hose from the nail gun, there should be no risk of the nail gun firing while you remove the jammed nail. There should be a way to access the driver area from the top of the nail gun, even via a latch or a couple screws. Remove the top part of the driver area and that should give you access to the jammed nail, which you can remove. Use long nose pliers or something similar if the nails are really stuck.

May 31, 2009 | Stanley Bostitch F21PL Nailer

2 Answers

Paslode 350s nail gun misfire


Check the small pin holes in the cylinder. If they become clogged the blade will not fully retract. Also check/change the O rings on the cylinder and flange.

Apr 09, 2009 | Tools & Hardware - Others

1 Answer

Air never stops coming out of gun nail,and gun doesn't sink nails


strip and clean the gun ,you will find that replaceing the seals will help no end
best of look ian

Mar 23, 2009 | Dewalt Heavy - Duty 31° Clipped Head...

Not finding what you are looking for?
Hitachi KNR90AE Round Head Framing Combo Kit With Compressor, Nail Gun and Hose Logo

198 people viewed this question

Ask a Question

Usually answered in minutes!

Top Hitachi Air Tools & Compressors Experts

John Trevino

Level 3 Expert

1383 Answers

Jim Thurston

Level 3 Expert

670 Answers

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

Are you a Hitachi Air Tool and Compressor Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...