This is a Genuine Manufacturer Sourced replacement part designed for Dewalt Framing Nailers. This is a Rubber O-ring and it is Sold Individually. It provides and air tight seal so the unit can maintain air pressure. Over time O-Rings will become brittle and stretched. If your Nailer is leaking air most likely you need to replace some of the O-Rings. To replace this item you would need to remove Nailer Housing/Cover by removing the screws that hold it together. This will require a properly sized Allen Key or Hex Wrench. Also, you would need a straight pin or something similar to remove the old o-ring. It is advised to check all O-Rings periodically to ensure top performance of your Nailer.
Used parts detail sheet and disassembled nail gun to find which O-ring(s) were damaged. Ordered and replaced 1 that was bad and then found another one (should have went further with first disassembly). Ordered and replaced a total of 3 O-rings and it works like new.
*Suggest ordering all O-rings marked as \"Best Seller\" the first t
... Read moreime, or maybe the rebuild kit.
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Gun stopped working. Took it apart, noticed many O-rings got over heated and stretched or ripped
Replaced stretched O-rings (from heat), Replaced Trigger Valve (from heat and dirt), Cleaned dirty oil and metal fragments out of the inside of gun. Works as brand new. Make sure to check all O rings. If any are out of place, pinched, or stretched, it will stop your gun from working.
Secure in vise between soft jaws
Remove top of tool
Remove cylinder assembly and piston
Using free parts diagram and you tube strip cylinder assembly to single components. Visually inspect and identify failed part and replace.
In reverse order, using approved synthetic grease, resemble and test.
1. Printed schematic to show parts orientation and location
2.Used punch to remove trigger pin and 2 spring pins holding valve in place.
3. Old trigger came right out, but had to use needle nose pliers to pull out valve. Came out in 2 parts, inner valve spring also popped out to my surprise.
4. Fitting new in took a fe
... Read morew tries, schematic helped to show orientation.
5. Back together no problem.
6. To do O rings, opened back of gun and plunger came right out. O ring change there just off-on.
7. Used 2x4 as stop to bang gun body hard to release inner workings.
8. First O ring was easy to access and find on schematic, but ring was VERY gummy, more gum than solid, scrapped off and easy replacement. But what grease to use??? None included with 2 O rings purchased, recommended grease listed for $63 for 3 oz.!!??!! Use silicone instead, but could not find any assistance on this!!!
9 Second O ring much harder to access. Had to remove spring and retainer, spring stop and slide back part. This O ring also all gum and noted 3rd O ring also gum. Had to order 3rd and now waiting for delivery. Job not done, but did reassemble, just not tighten screws.
Removed the 4 Allen screws at the top of the nailer. Removed the entire assembly in one piece. Removed the black rubber ring by pushing down on the ring and spring and remove the black keeper O ring. Replaced the two non-black O rings and then reassembled the nailer.
1. Removed the four screws holding the case on
2. Removed the piston (it pulls right out)
3. Removed the cylinder (I believe thatGÇÖs the name). It took a bit of a tug but it pulled right out
4. Cleaned the space where the old o-ring was located
5. Rolled new o-ring into place
6. Reseated the cylinder (slides
... Read more in much easier)
7. Inserted the piston
8. Screwed the case together
Only tool needed was the screw driver (it is a hex head)
Took it apart, cleaned it up. Replaced all the o-rings & seals. Pretty simple repair. The parts diagram on your website was perfect. Helped me order the correct parts.
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