20 Most Recent Dewalt Round Head Framing Nailer D51845 Questions & Answers

Dewalt has two triggers available for their framing nailer. The black trigger (390746-00) is a bump style trigger. While holding the trigger, you will be able to fire a nail by pressing nose against work. This trigger is preferred by most framers because it is much faster. Gray trigger will only allow one nail to be fired. Bumping will not work with the gray trigger. With trigger released, you must place the nose against work then pull trigger to fire. To fire next round, you must release trigger, pull gun off the work, again place nose against work then press trigger. Check dewalt web site for recall information. Some dewalt framers have been recalled for faulty trigger. Good luck with your projects.

Dewalt Round... | Answered on Aug 11, 2018

The bulkhead on a nailer is the part that separates the pressure chamber from the lower compartment of the nailer. Usually round center hole for the cylinder to pass thru. The outer shape conforms to the inner contour of the body. Usually made of plastic some are metal and have orings seals or oring surface.

Dewalt Round... | Answered on May 05, 2016

Dewalt uses a combination buna and vinyl orings. The vinyl orings in their nailers fail by turning into putty. To fix your problem replace the trigger valve or the vinyl orings within. You will meed three orings in the trigger valve, (buna 70) , two rings are 2mm and one is 6mm. Within the body of the gun there are 5 more vinyl orings that fail. The rebuild kit has some vinyl orings and will most likely fail also. Convert to buna for longer life. Good luck

Dewalt Round... | Answered on May 05, 2016

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

Dewalt Round... | Answered on Jan 07, 2015

Parts and manual can be found here:

Good luck with your nailing projects

Dewalt Round... | Answered on Aug 04, 2014

Sounds like the trigger o-ring is damaged, either because of not being oiled frequently, or the pneumatic tool has not been used for a while. O-rings will harden up if not used. Look for a place that sells fasteners, or nails and see if they can put a new o-ring in the trigger asm. for you. If you take the gun to a place where you purchase your nails, they should repair for little or no cost. it is an easy repair if you have the tools, parts, etc.

Dewalt Round... | Answered on Mar 16, 2013

Go to Dewaltservicenet.com and download a breakdown of the tool before starting. I would recoment changing all the O rings and make sure that you get a good grease to lube them first. Its not that hard.

Dewalt Round... | Answered on Mar 16, 2013

Where does the air leak out from? If it leaks from the trigger DeWalt makes a trigger valve assembly part # 641006-00 list 8.89 BUT if it leaks from other areas we have to look into it deeper. If it is just the trigger valve let me know and I will give you instructions how to remove and install the new one.

Dewalt Round... | Answered on Mar 16, 2013

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.


Dewalt Round... | Answered on Oct 17, 2011

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