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Dewalt D51844 Round Head Nailer Magazine Cap Assembly

I had to remove the Magazine Cap on my nailer to get a trapped nail out of the gun. I pulled the pin and the locking lever and spring came out and I do not know how they go back together. Do you have a diagram or can you tell me which way the spring and lever go in.

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JD Stowe

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Send email to dewalt and request exploded view of nailer showing parts list- usually they are clear enough to figure assembly. best guess.guys at dewalt are pretty agressive these days and if you take parts in to repair shop- they will more than likely repair it on the spot for free. good luck

Posted on Oct 22, 2008

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I Have A Dewalt Framing nailer and a nail is hung where it comes out, how do I get it out,


Use an Allen wrench to loosen the two or 4 bolts on nose of the gun. Take the plate off and remove offending nail.

Jan 06, 2015 | Dewalt Round Head Framing Nailer D51845

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How do I load my frame nailer


Just pull the pusher back along the magazine all the way until it latches. It should be located on the side of the magazine and looks like something you can grab with your fingers. Then load the nails in through the slot. Pull back on the same pusher until it unlatches and it should slide forward to push the nails toward the head.

Oct 25, 2013 | Dewalt D51844 Framing Nailer

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My DeWalt D51845 - when you use the sequential trigger it shoots maybe every 4th time you pull the trigger. If you replace the sequential with the bump trigger ever 3rd one shoots 2 nails.


Check this notice and post your question again if you nailer is not part of this recall. Good luck.

D51844 & D51845 Recall Notice Published 06/09/2005 08:49 AM ' Updated 09/29/2011 09:35 AM What is the recall on the D51844 and D51845 about? The contact trip on some of the nailers may not operate properly, which may permit a nail to be ejected with only trigger actuation.

Only nailers with the following date codes are affected:

200203, 200204, 200217, 200302, 200304, 200308, 200315, 200325, 200329, 200343, 200403, 200404, 200406, 200407, 200412, 200413, 200415, 200416, 200417

See the link listed below for illustrations & more information regarding the recall.

http://www.dewalt.com/us/articles/article.asp?ID=1373

Oct 16, 2011 | Dewalt Round Head Framing Nailer D51845

1 Answer

Dewalt Nail Gun D51844. Same problem as other guy - air blowing out with trigger off. Taking it apart, not sure the cylinder comes off, seems to be held in by a hard plastic housing - called a Bulkhead. ...


Dewalt uses about 4 or 5 orings within the gun made of semi clear urethane that fail (turn gummy and breake apart). Two are under the bulkhead and at least two in the trigger valve. To remove the bulkhead pull up on the white housing. With housing and cylinder assembly out, push down on the black retainer at the very bottom and remove the oring(take a picture of the assembly after each stage so that you can re-assemble the spring and checkvalve correctly). You will find two large orings under the bulkhead against the cylinder that need to be replaced (also the orings in the trigger, or replace the trigger valve ).

Jan 01, 2011 | Dewalt D51844 Framing Nailer

1 Answer

Will not use the whole stick of nails Breaks the last 3-4 nails from the end Is this normal


I'm not sure what you mean by "breaks the last 3-4 nails from the end' but because of the damage that can be done by firing an empty nail gun most manufacturers are making their guns stop working when the magazine gets down to the last three nails. You would need to check your operators manual to see if your model is one of these.

Dec 30, 2010 | Dewalt Round Head Framing Nailer D51845

1 Answer

Brand new unit. Used last weekend, no problem. Today, won't shoot nail. Air is released when trigger pulled, but no nail plunged.


Orings /other parts tend to stick when nailer is new. Dewalt uses some vinyl orings that have been causing premature failure. Be sure to add a few drops of oil when used. Too much oil is not good. Wrong oil will cause orings to swell and cause problems such as yours. Your nailer's firing valve can be reset by rapping the nailer against rubber surface such as a thick rugger mat or coiled rubber air hose. Remove airline and nails, being carefull not to damage the head, rap had against rubber mat and retest gun. If it did not reset rap against nose of gun and test. If no joy, you will most likely need to remove head and manually move cylinder up/down and /or check vinyl orings for failure. Before you try to reset the gun, make sure that the safety is pushing the firing pin all the way in. Air removed, look under the trigger as you push down on safey, if it does go all the way in try bump-firing the gun (for test have nails removed). Hold in trigger and quicky /firmly strike gun against rubber pad. Good luck

Nov 14, 2010 | Dewalt D51850 Heavy Duty 20 Degree Full...

1 Answer

For the Dewalt d51844 can you use PAPER or plastic collated nails


Yes you can generally interchange the two (paper vs plastic collated) as long as the nails meet the specifications (and collated angle) specified by your nail gun.

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Apr 01, 2009 | Dewalt D51844 Framing Nailer

1 Answer

D51844 Won't Fire Nails


The Dewalt D51844 uses a full round head 20 degree nail. Sometimes the generic brand nails are not made exactly to the stated degree. They do this so their nails will work on a variety of nailers. Best to check the nails angle in relation to the angle of your nailer. Place a strip of nails on the outside of the rail. Align the heads of the nails to a convenient straight edge on the rail then check that the head and shaft of the first nail is aligned with the barrel. If the lower part of the nail projects out further than the head, then the driver will miss the head. If the head of the first nail appears close enough to barrell for the driver to hit it then place a new strip of nails into the mag and slide the pusher foward. Fire one nail, if success, remove the nails from the mag and check if the plastic holding the nails together is projecting in front of the first nail. Sometimes the plastic is not right, too stiff, and will not let the next nail align with the barrell. If the next nail appears ready and slides forward then the driver may not be going all the way up after shot. Check by inserting a metal rod into barrell and push driver up till it stops. If the driver is in the uppermost position, then most likely brand of nails. Use Dewalt nail. Good Luck

Jan 25, 2009 | Dewalt D51844 Framing Nailer

1 Answer

Is there any way to free driver blade on nail gun? my gun is the dewalt 20 degree framing nailer


I am assuming that a nail got jammed? If so unplug air to tool, remove the rest of nails and turn it over. try to find a flat piece of steel smaller than the nose where nail goes and gently tap the driver back up and remove jammed nail. If the driver is broken that is a different fix. Hope this helps

Dec 06, 2008 | Dewalt Round Head Framing Nailer D51845

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