I replaced the trigger valve on my Harbor Freight, Hitachi style, Pierce framing nailer, you can too 

sir you’re a life saver !

Appreciate the video in changing mines today very informative

Your video was very helpful I was able to have the old out and new part in, in about 20 minutes. Would have taken longer had I not watched this. Works great again. For reference the Hitachi NR83A is the same as the pierce. Amazon has multiple parts for this particular framing nailer. They sell the plunger and trigger vale in one kit.

Very nice job, explained it thoroughly, not to mention the BIG PLUS he did it all in ENGLISH!

I just purchased the same nailer brand new in the box for $80. I think it was at that price due to a model change. I plan on buying the same part ust in case I have the same issue. I'm gonna save your video. Thanks

For those that are in the middle of a project and all you need is the BB. A 6mm Airsoft BB will work in its place while you wait for a trigger kit. If you happen to have one lying around.

Thanks for the video! Will be doing this shortly. FYI, they sell an actual siding gun which fits the smaller nails

Also, hold the trigger down and push on the “foot” to shoot a nail, don’t press it down and then pull the trigger, makes it much easier, just bounce it!

Thanks for the info, my nailer just suffered the same fate, now I can fix it with your guide, can complete my new home for the family in CO... Thanks again for the very helpful video.

It's almost like the plastic BB and maybe the plastic valve should be made out of something much stronger but, I guess it wouldn't be a Harbor Freight budget version. Good video though.

Buen trabajo 👍

Thank you for the info and What's the part number?

What’s the part number?