Question about Dewalt Heavy - Duty 31° Clipped Head Framing Nailer - D51822

1 Answer

Dewalt 51844 round head nailer

When i pull the trigger air leaks around the trigger area. Just got it out of the shop but still doing the same thing.

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 2,176 Answers

Could be a couple things, the seal ring on top of the cylinder or a cut oring or just a faulty trigger valve assembly. I would take it back and have the repair shop correct the problem for you at NC. Let me know if still a problem and I will look at a schematic and give you part numbers.

Posted on Feb 17, 2009

Ad

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 Repairman 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 repair professionals here in the US.
click here to Talk to a Repairman (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

Nailer is shooting air out of trigger, is not releasing brad


Sounds like the head valve. Remove the head cap take out the head valve, clean, re-fit and give it a few drops of air line oil. Then give it a try. Good luck.

Oct 19, 2014 | Stanley Bostitch 18 Gauge Brad Nailer 1 -...

1 Answer

My husky framing nailer leaks air around trigger


Leak around trigger could be trigger valve internal orings or orings on the outside of the trigger valve making contact against the body of the gun. Spray soapy water to determine where the air is leaking from. If air is leaking around the outside of the valve, most likely the orings were cut upon installation of the valve. If leaking from internal valve, most likely worn or broken oring; easy to fix if you have a source for orings.

To remove the trigger valve for service or inspection (take close-up photo of trigger area for reference ):
disconnect airline, remove nails, remove trigger retainer pin, remove trigger, remove roll pin /s holding trigger valve in place (use 3mm punch to remove retainer roll pins which are located in the body of the gun just above the trigger valve). With retainer pin/s removed and with gloved hand (under trigger valve), apply air pressure to gun to blow out the trigger valve (use lower pressure to push out trigger valve because it could come out with force.). With trigger valve in hand notice that there are two slots or groove cut neer top of the valve where the retainer pins rest, you will need to reinstall valve into body with slots aligned to retainer pins. Remove retainer pins holding trigger together to pull out internal valve. Good luck and post again if your have other question about the trigger valve.

Nov 15, 2012 | Air Tools & Compressors

1 Answer

With the safety depressed, it only blows air when the trigger is pulled. I had it in a shop for the same problem and it worked for a little while and then did the same thing.


No model number given for specific solution, however, the problem that you describe is caused by air leaking past the orings in the headvalve or head gasket(you will not hear air leaking out of the gun, air is leaking between pressure chambers) or the safety foot is not pushing the trigger pin all the way in. Easy test. Remove the trigger and manually depress the trigger pin in very quickly. If the gun fires, adjust safety foot. If gun does not fire , remove the head and pull out the headvalve. Look for small scratches on the surface where the orings make contact to the head. Remove fine scratches and lube with plenty of white grease and retest the gun. Good luck

Nov 15, 2012 | Air Tools & Compressors

1 Answer

Hitatchi nv45b2 trigger leaking


Air leaking around the trigger area could be caused by vinyl ball / gasket under trigger valve bushing or orings within the gun. Easy test, remove nails and connect air (assuming that air is now leaking around the trigger area). Depressing the trigger stops the leak, replace vinyl ball. Depressing trigger does not stop leak, move plunger b (plunger B, small shaft under bubber bushing next to the trigger valve) with your finger in then out to determine if air leak changes tone. If air leak changes sound or tone, then air is leaking past orings of the cylinder guide and/or cylinder plate and/ or the cylinder itself is scratched by debris where the orings make contact. Pull out the cylinder and examine the contact areas. If scratched, use 300 grit paper to smooth, if smooth, however, suspect the orings of cylinder guide (or cylinder guide is cracked). The cylinder guide is difficult to remove and install without causing damage to guide or cutting new orings when installing. Do not remove the guide unless all the other options have been checked. One last bit if information, I have noticed that some guns will leak air if the orings on the feeder piston do not fit snuggly. Make sure that leaking sound is not coming from feeder area (remove the basket and feeder/feeder pin/spring and pull out the feed piston, making sure that the largest oring is making good contact within the cylinder). Good luck with repair.

Sep 28, 2012 | Hitachi NV45AB2 Roofing Coil Nailer

1 Answer

DeWalt D51822 Framing Nailer: Replaced the trigger valve and air is still coming from the nose of the gun. I would think no air should get past the trigger valve until pressed. What's wrong?


Dewalt framing nailers use some vinyl orings (gold or clear in color) that fail too soon in both the trigger and the cylinder spacer. Air out the nose of gun indicates air is leaking past the cylinder spacer seals (If piston is pushed down with air leak then headvalve seal is leaking (remove nails for this test)). If piston is not pushed down with leak, remove head and pull out the cylinder with cylinder spacer (white plastic). Place the cylinder on workbench with bottom up. Push down on locking ring and remove retainer to release all the other parts. Take picture or take note of parts together and as you pull them off to aid in re-assembly. You will need to replace the two orings between the white cylinder spacer and the cylinder. Order oring kit from dewalt or just purchase one ( # 141 universal oring ) and one metric oring 74.4mm x 3.1mm from hydraulic parts store. If the piston was pushed down with air leak, replace headvalve orings in the head. Good luck with your repair

Jul 05, 2012 | Dewalt Heavy - Duty 31° Clipped Head...

1 Answer

My hitachi roofing gun leaks air from trigger when not pressed


Two areas to check when air leaks from around the trigger. Rubber ball under trigger pin will cause air to leak, however when good side of the ball falls on the seat, air will not leak for a while. If air is leaking from plunger pin (just in fromt of the trigger pin), remove the head and pull out the cylinder plate to reveal broken oring (oring part # 876161). Good luck with your repair project.

Jun 05, 2012 | Hitachi NV45AB2 Roofing Coil Nailer

1 Answer

DEWALT D51850, Air Blow by trigger, factory has repaired multiple times. Says it's "O" ring, I Say It's a POS. my other dewalts are fine, and it's not a lack of oil or use issue.


Dewalt uses clear vinyl orings in the trigger and around the cylinder between the bulkhead. These orings do not hold up. They should be replaced with black rubber type to solve the air leak problem. Replace tow orings on the stem inside the trigger valve ( 2MM X 1.5MM). Replace two under the bulkhead against the cylinder (larger one is 74.4MM X 3.1MM, ((smaller is 58.4MM X 2.6MM or universal oring number 141)) ).

Oct 27, 2011 | Dewalt D51850 Heavy Duty 20 Degree Full...

1 Answer

Hey, I'm having trouble with my Dewalt 18ga Brad Nailer trigger. Can you send me the directions you have on how to get into this thing? I'd really appreciate it.


For removal of dewalt D51238k trigger valve. Remove the nails.
Remove the pin holding the trigger in place. Then remove two roll pins in the body of the gun just above the trigger (3mm roll pins). With gloved hand, apply air pressure to the gun which will pop out the trigger valve. Use caution because the valve could come out with force. Try with low pessure first, then increase as needed. If you are removing the trigger because the gun will not fire, (only puff of air from trigger area), suspect problem in the head valve instead (usually, trigger valve is bad if air leaks from trigger when you connect air ). Good luck

Sep 26, 2011 | DEWALT D512381 18Gauge Brad Nailer ORing...

1 Answer

NRA833AA model. air is leaking out of trigger valve & will not fire. require manual to check operation.


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.

Jan 09, 2011 | Hitachi NR83AA3 3 1/4" Clipped Head...

1 Answer

Why would air leak from around the trigger...I oiled this new gun and used it for 2 hours...now it leaks air from around the trigger...


There is an o ring that seals the valve that is operated by the trigger. It sounds like this oring is defective, or missing. Home depot or lowes should have no problem returning this for you if it is less than 90 days. it is fairly complicated to disassemble.

Nov 21, 2010 | Dewalt D51850 20 Full Round Head Framing...

Not finding what you are looking for?
Dewalt Heavy - Duty 31° Clipped Head Framing Nailer - D51822 Logo

187 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dewalt Air Tools & Compressors Experts

John Trevino

Level 3 Expert

1388 Answers

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

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

Answer questions

Manuals & User Guides

Loading...