Question about Hitachi NV45AB2S Coil Roofing Nailer

1 Answer

Hitachi cordless drill, removing chuck

I have a Hitachi DS18 DVB cordless drill and the chuck started to lock up.It's very hard to turn it to loosen or to tighten the chuck. It looks like it will require two very thin wrenches to remove it but I'm not sure and would appreciate any help out there.

Posted by on

  • cressg Dec 16, 2008

    Thanks for the info about the screw inside the chuck. Apparently the screw had come loose and was binding up the forward and reverse movement. After I was able to get to the screw all it needed was to be tightened. Thanks , my drill works again.


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Hitachi Master
  • 1,383 Answers

Replacing the chuck on a drill is simple when you know the trick. I worked at a tool rental center while attending college and learned how to repair many tools. Open the chuck enough to remove the screw that you will see inside the chuck. It will most likely be reverse thread. The chuck is threaded on the shaft so just simply close the chuck on an allen socket and impact off with air or electric impact tool. If you do not have an impact tool close the chuck on-to the largest allen wrench that will fit into the chuck.(with the long part of the allen wrench projecting out) You will need to set the drill into a vise or strap to work-bench, then strike allen with hammer. Most chucks are removed with one quick impact of the hammer, counter clockwise. Do not squeese the drill too tightly with vise, we used a piece of leather to protect the drill. Good luck. Enjoy

Posted on Dec 16, 2008

  • Gerry Tseng Jan 07, 2011

    perfect advice. worked like a charm for removing the chuck on my Hitachi D13Y right-angle drill. at first I tried the 2nd suggestion but didn't get anywhere as I couldn't keep the drill from spinning, so went the impact wrench method and it came right off!


1 Suggested Answer

  • 2 Answers

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

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.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

How to replace the trigger on a hitachi nv45ab2

Pound roll pin out of black trigger and remove. Turn silver slotted part with screw driver and the two valves will pop out. Usually it's the flat trigger bushing that is bad and makes it leak. I have all parts.

Dec 02, 2014 | Hitachi Tools & Hardware - Others

1 Answer

How easy is it to take apart my hitachi nailer and clean it

If its working ok, dont take it apart, just give it a bath in diesel. Diesel fuel and a small brush will keep it clean and lubed from the outside. Keeping using few drops of oil once or twice a day. If the cylinder is sticking open (air out head when you connect air), remove head and pull out the cylinder and clean /lube with white grease. If the cylinder has fine scratches where orings make contact, sand with very fine sandpaper untill smooth. Make a gizmo that you can turn with drill that will fit into the cylinder and spin the cylinder while you sand. I use a 1.5 inch solid rubber bushing with 1/4 " shaft pushed thru; fits snuggly into cylinder (or just turn by hand). Good luck

Feb 01, 2013 | Hitachi NV45AB2 Roofing Coil Nailer

1 Answer

My hitachi nail gun NR90gc2 will not fire

Check the date of the bottom of the gas. With the gas removed when you fire it you should hear a faint spark sound from the top. If gas is in date try putting it in your pocket for 10 minutes to warm it up. Open the front and make sure the piston is pushed all the way up into the machine.

Nov 17, 2012 | Hitachi NR90GC2 Cordless Gas Clipped Head...

1 Answer

Hitachi Nr90gc2 nail jam

Use a punch as close to the size of the driver as possible and tap it with a hammer until the blade retracts and clears the jammed nail. Be careful and only hit it as hard as needed to clear the jam. Sometimes it will require a few good "whacks" with a hammer. Much easier then disassembling the tool and I clear jams on customers tools like that all the time here at my shop.

Jun 23, 2012 | Hitachi NR90GC2 Cordless Gas Clipped Head...

1 Answer

On a Hitachi NV45AB2 How do you get the trigger spring out? Part #48

UNPLUG the tool. on the trigger itself you will find a roll pin, remove it then with the trigger off you will see what appears to be a slot for a straight screwdriver, you can lay a screwdriver blade the width of the slot and turn to loosen and remove, next on the front there is a spacer with o rings on it carefully remove it and the spring can be removed. If you go to " you can download a schematic for this. On the left side click on the Hitachi parts and go to nailers and scroll down till you find your model is is on the left side of the mini page click on it and you can see the schematic. Let me know if you need more help

Feb 27, 2011 | Hitachi NV45AB2S Coil Roofing Nailer

1 Answer

Hitachi NR 83A2S, Nail wont fire properly

The NR83a has an adjustment just below the triggering plunger. It is a 6mm hex head bolt with a locking nut. Loosen the nut and adjust screw out several turns and re-test. Make adjustment as necessary. I have seen many of these gun without the locking nut which allows the bolt the adjust itself all the way down. AS parts wear this screw needs to be adjusted. The pushing lever and the plunger are wearing smaller/shorter, that is unless the locking nut was missing. Remove gun from air supply for safety when making adjustments. Good Luck an email if you have other qustion about this gun.

Apr 27, 2009 | Hitachi NR83A2S Framing Nailer, Full Head,...

1 Answer

Were can i buy new one

The link below will take you to (toolpartsdirect). This is where I purchase all my parts. They are quite handy because they sell most all popular brands/parts. Good Luck with your repair.

Apr 15, 2009 | Hitachi NR90GR Cordless Round Head Gas...

1 Answer

I have been rebuilding Hitachi nalers for about 2 years now and this one has me stumped. It works fine if you single shoot it. If you hold the trigger and try to bounce shoot the nails, the driver will not...

The roofers that frequent my shop want their nailers to work like machine guns. Here is what I do to make the hitachi 45 nail fast. Remove the cylinder and sand the fine scratches where orings meet cylinder. I use a rubber slug with a small bolt through the center. The rubber slug fits snuggly into the cylinder and the bolt into chuck of drill. Turn the cylinder with the drill while holding fine sandpaper against the scratches untill smooth. remove the nose from body and replace the sheet (part # 877125) and the bumper. If the sheet fits loose on the driver and the bumper has cuts or missing pieces, the driver will not return with full force. also the oring on the piston should not be too tight. Just snug enough to hold the weight of the piston. While nose piece is off check the air passage to feed piston for trash, use a small wire and push through to make sure. Make sure the orings on the feed piston fit snug. Actually push the feed piston by hand in the nose piece to make sure the three orings fit snugly. A loose feed piston will reduce nailing speed. Finally replace the boot on the firing pin. If the boot is blown off its seat with use replace the firing pin. A loose firing pin will waste air and lower pressure reducing nailing speed. Good luck

Dec 01, 2008 | Hitachi NV45AB2S Coil Roofing Nailer

Not finding what you are looking for?
Hitachi NV45AB2S Coil Roofing Nailer Logo

2,128 people viewed this question

Ask a Question

Usually answered in minutes!

Top Hitachi Tools & Hardware - Others Experts

John Trevino

Level 3 Expert

1383 Answers

james allen
james allen

Level 2 Expert

109 Answers


Level 3 Expert

2417 Answers

Are you a Hitachi Tool and Hardware - Other Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides