Hitachi Tools & Hardware - Others - Page 9 - Popular Questions, Answers, Tips & Manuals

it could be you are using the wrong nails, the gun should describe the correct angle and size.

Hello. I have the link for you to get a PDF of the manual.

http://www.hitachipowertools.ca/en/Products?cat=29&pid=246

Bottom left of the "features" tab.

Hope this helped, please don't forget to rate the assistance.

Thank You,
Richard

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 "ereplacementparts.com 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

could one of 2 areas. First I would think the motor is burnt and second the switch. you can go to hitachipowertools.com and download a tool schematic for this by entering the model number DH18DL and then scroll about 1/2 way down the page and on the left hand side there is a link to view the parts list and to show you how to disassemble this. If you need more assistance please let me know.

There is a belt adjustment know on the side of the sander. Turn the adjustment know back and forth while the sander is running until it centers itself.

Your manual can be found here, look at the bottom of the page for pdf file, good luck with your woodworking projects! :


http://www.hitachipowertools.ca/en/Products?cat=29&pid=74

the seals are wearing out, this is normal ageing, you can buy replacement "0" rings and put them in quite easily

Generally caused by three issues. Bent driver, worn or cracked lower bumper or worn piston ring. Remove nails and tilt nose of gun up then down; the driver should not slide up then down cylinder. If driver appears to be loose in the cylinder, replace piston ring. If driver moves up to top with some resistance and stays, then open gun and check lower bumper for cracks or missing pieces. Parts are available at www.toolpartsdirect.com. Good holidays

Removing jambed driver can be very difficult. I use an old hitachi driver with some metal removed at the tip to drive in the jambed piston. I grind the used driver slighty to allow for the jammed nails to pass the driver i am using for ram otherwise the old driver will jam up also. To protect head and cylinder from damage I remove them and set to side. Place body of gun on soft wood and hammer old driver blade with heavy copper or brass hammer. Good luck

Remove nails and disconnect airline. Open door latch and check for back and forth movement of the feed piston. It should move with little force and should have spring tension when you push on the leading edge of the feeder. If very hard to move then most likely orings are swollen or stuck from lack of lubrication or water entering gun. Remove head being carefull not to tear gasket and check piston/ oring for tight fit( the piston will not come all the way out, just enough to repalce oring). If very tight then all orings should be replaced. If just dry, lube with silicone paste or proper oil. Check that the cylinder retracts into body of gun and rather easily pulls back up. Do not use pliers on the the cylinder; it is spring loaded and shuld move with finger pressure. Parts are available at www.toolpartsdirect.com. Good holidays

no will load but jamm

Most nail gun manufacturers make an assembly grease but a light grease like lithium will work, it's just to lube the rings during assembly. Most of it will get washed away by the gun oil you put in the gun each time you use it.

go to Hitachipowertools.com and under products select woodworking, then routers and you will find the manual you are looking for it is 68 pages long so you might want to print just the language by narrowing your printer to selected page numbers. If I have helped you would you please vote accordingly and thank you.

Since I am sure that you are using an air source that you know is working I would suspect a broken o-ring or a jammed mechanism.

A broken o-ring is usually accompanied by a hissing sound as the air escapes pass the seal.

If the mechanism is jammed the unit will act as if it is not connected. Disconnect the air source and check for a jammed nail. Also check to insure something is not preventing the safety mechanism for disengaging when the unit is pressed against a board. If these things out fine the unit may have seized up. For this or the o-ring repair take your unit to a service center (unless you are very handy).

Framing nailers can be very dangerous when they malfunction, so you would want this repair done correctly.

A nailer driving two nails at a time is usually because the tip of the driver is bent causing it to catch two nails each time it comes down. On rare occasions you can remove the piston/driver and straighten it out but usually not. The driver is hardened steel and has to be perfectly straight to work properly. The part you need is Hitachi's piston, part number 884-330. Shop around the net for one as they are expensive, usually $70 to $80 plus shipping.

Here is a link to hitachi web site listing for your gun. Look at the bottom of the page for pdf files of parts lists and manual.
http://www.hitachipowertools.com/store_item.php?iID=154&arrPath=1,9,43,p154,

There are two areas around trigger that can leak air. Spray soapy water on trigger stem and/or plunger valve. If leak is at trigger stem check vinyl ball. If leak is at plunger valve, most likely worn or broken oring inside of gun. Remove head and pull outer ring to reveal two orings. A worn outer oring will cause leak at plunger. If orings are ok on outer ring, pull cylinder and check for scratches where orings contact. If scratched, sand with 400 grit paper untill smooth and repack gun with oring kit. Good luck.

When you trip the safety and fire the gun, the cylinder drops down into body of gun allowing a rush of air to push piston down with force. If the cylinder fits too tightly in body, it will not open enough to allow full air pressure into cylinder. Remove head and check that the cylinder moves rather easily down then back up (it should travel about 1/4 inch). If is difficult to move the cylinder then remove it and replace all the orings that contact its surface. Also make sure that the outer part of the cylinder is smooth where orings contact. If there are fine scratches, remove them with 400 grit sandpaper. Lube cylinder/orings with silicone paste lube. While cylinder is removed check that lower bumper is in good shape with no missing pieces. For best performance, also replace the three orings on the feed piston. Piston /driver should move down cylinder with only slight pressure yet it should not drop down the cylinder under its own weight. Good luck

You may need a rebuild kit of the O rings, and, for certain added lubrication. The return stroke of the nailers require that all the parts move easily and dried out or "dead" O rings are a common problem causing failure to return properly.

on the under side there is a sensor that could be giving you a problem, also something could have broke or got jammed not allowing to reset, the reset should be automatic as long as you keep the trigger engaged, you might want to try and turning the control dial up or down without a piece of rebar in it and pulling the trigger again to see if it will reset. They are not fun to work on though.

For piston to retract properly, the bumper and small sheet below bumper must be intact. Also the piston oring should just hold the weight of the piston at the top of cylinder (not too tight). Remove head and pull out cylinder. Look at bumper and make sure that it is not cracked or missing pieces. The part called the "sheet" should fit snuggly on the driver and not allow the driver to be removed from top. To replace the sheet, you must remove nose of gun. Good luck