Senco O-Ring Kit: amzn.to/2CQxOgH (affiliate*) Senco Valve Seal (BF0203): amzn.to/2P96mgp (affiliate*) *Purchasing from these Amazon affiliate links earns my channel a small commission. Think of it as a tip that doesn't cost you anything. Thanks for the support!
I bought a Milwaukee framing nail gun for 60 dollars at a yard sale and I don't have a compressor to test it yet and I noticed that the pin that hits the nail moves when I put the nailer upside down and if I put it down it moves again do you think there's a problem with it?? I bought because I want to build a small shed
@@SANTAMUERTEXIII I don't know a ton about nail guns but it sounds like the driver seal might be bad (or missing). Once you're able to connect it to a compressor, you'll know for sure. If the seal is bad, it's usually cheap and easy to replace. Even though this video covers a Senco gun, your Milwaukee will be very similar. Let me know what you find out.
Always nice to get old nailers for free or cheap and rebuild them. I have a Senco SN325 I rebuilt and was amazed at how many o rings they use in the trigger, about the same amount as in the rest of the gun. It is a great nailer. I also own 3 Paslode 5300 Plus nailers, also great guns. When rebuilding them their is only one o ring in the trigger and that is only to seal between the trigger and the housing. Complete it only has 10 o rings. I really like both of the older nailers from these companies. Thanks for the video.
Yeah, from my limited experience, air tools are pretty easy to repair. I agree, the Paslode nailers I've worked on do have a simpler design. It's nice that rebuild kits are still available for these older nailers. Thanks for the comment!
Thank you for putting this video together. I am about to do a seal kit on my 750XL. I am certain that the internals are the same and so therefor the repair process ... you answer all the questions i had before i even begin. Great work.
Well done. Doing God's work. Ron Swanson would be proud. I am not confident I will be able to do it, but this video has given me some hope. Thank you sir
@@Mikeattempts , thank YOU for making this vid. I am fascinated by HOW TO FIX IT (anything), because sooner or later it WILL break some kind of way. Learning about the insides of this nailer, and WHAT was bad, makes it a great instructional video. (If everything was good, you wouldn't be making this vid!) Watching this vid made me KNOW there is not way in this world I could take it apart by myself, AND get it back together again ! There are sooooo many parts, pitfalls to look out for, and S P R I N G S ....OMG !!!!! You made it happen !
@@bruceb3786 Sure you could do it on your own! This was the first time I had ever taken one apart and I'm no pro. :) If you like these kinds of repair videos, there are many more on my channel.
@@Mikeattempts , yes Sir, I am an engineer "and I can do ANYthing"........ so the story goes. What happens with me is that I draw sketches 'til I am crazy, and take 100 photos, during disassembly, where most others would take None. I tape things to cardboard backing so it will remain in the order it was removed, especially those ever-present "little screws", which otherwise would Always get lost. What I don't know about is damned springs.... the ones you mention fastidiously in the video, which always surprise me, jumping out all over the place, and Always taking some strange part with them ! THAT's when I am screwed, no matter how careful I have been otherwise. But with your excellent video, and the repair parts/o-rings I bought nearly 5 ^^ y e a r s ^^ ago (July 2017) from e-replacement parts, I am now ready to tackle this project on MY Senco FP600 ....... so there.
@@bruceb3786 Hahaha, yeah, I have the added benefit of being able to review the disassembly footage. Be sure to let me know how your FP600 turns out! :)
My bf0204 retainer (@1:20) was cracked, don't see any other O rings or seals that show wear or cracks. If it was mine id replace all seals but customer just wants it fixed as cheaply as possible. Would that cause the head to leak air in your experience?
I don't have much experience but every nail gun I've rebuilt has always needed all of the seals & bumpers replaced. I've only ever found a couple O-rings that were obviously bad, but I just replace 'em all while I'm in there for peace of mind and because they're cheap. A torn gasket could also cause a leak.
@@Mikeattempts just got the parts in and replaced all o rings and seals and still having all the air leak out the back exhaust port(some of the plastic is missing on this one), any ideas on what to try next?
@@Mikeattempts yea I can feel all the air rush out that external black plastic exhaust cover all the way towards the rear held in with the short screw. It's missing plastic not exactly cracked but I was under the impression it wasn't a seal anyway so wouldn't matter
@@caminotorino4547 If you replaced all seals and O-rings, like I did it the video, then some piece must be cracked and letting air past. Either a plastic piece or maybe a crack in the metal cap itself. Sorry I couldn't be more help.
I'm sure you'll end up with a working gun too! :) This was the first nail gun I ever repaired, and it was pretty straight forward. Let me know how it goes!
I'm no pro and this was the first nail gun I've ever fix or used. :) I have no experience with coil nailers but I would guess that it's either related to a spring in the coil housing or possibly a bad driver O-ring. With coil nailers, it sounds like there's also a piece called a "feed piston" which could be stuck.
Hi I e just bought a second hand one of these. And it came without the stop and spring. Is it still usable. Parts are hard to get here in the uk. Thanks
It's not glue, it's just blue thread locker. The most common brands are Permatex and Loctite. Blue works best in situations like this because you can still remove the bolts without too much effort. You would only use red thread locker if you didn't plan to ever remove the bolt again. Thanks for watching!
The only place I know of would be the Northern Tool Repair Center inside the store. That's the problem with some store branded tools, you can't find parts anywhere else. Sometimes, you can't even get parts, even if they still sell the model you own. I'm curious so please let me know if they're able to get the parts you need.
I replaced the valve ring seal on the same framing nailer, but when I tried to use it the valve ring seal keeps popping off. Do you know why this would be happening?
I guess there's a chance you have the valve seal backwards. At 18:00 in the video, you can see how the metal disc sits down inside the valve seal. The raised outer lip of the valve seal goes towards the front of the gun.
@@jkg2754 Sorry, I fixed this Senco framing nailer and a Porter Cable finish nailer back to back and forgot that I didn't actually remove the trigger on the Senco. I thought you were asking me to install a different trigger type. I pulled everything out from behind the trigger and replaced all the O-rings. I'm pretty sure the trigger itself is only held on by 1 pin.
This gun uses 20-22 degree full round head plastic strip nails. CORRECTION: I was wrong, my model has the 30 degree magazine and takes 30 degree full round head nails. There's another version of the FramePro 600 that has a different magazine so keep reading below.
@@frankriojas6380 You are correct, the previous owner left paper strip nails in the gun, and they do work. However, when I researched the nail type, it said this gun takes 20-22 degree nails.
@@Mikeattempts Mike, Thanks for the reply! I am getting this gun tomorrow and am convinced this takes a 30 degree paper strip. I just don't know if it's full head or clipped. You might be referring to the FramePro 600 FRH (full round head) model. I believe the FRH model takes a 21 degree plastic strip. I don't know why they both have the 600 number. It should have been a different model number, but they are different angles for sure.
@@frankriojas6380 I just double-checked and my Senco FramePro 600 does take 30 degree full round head (not clipped). One version of the 600 has a piece that pushes the bottom of the magazine further away from the grip, which would change the angle to 20-22 degrees, but mine does not. It is confusing and means I ordered the wrong nails (haven't used 'em yet). Sorry for the confusion and thanks for helping me realize my error.
Luckily, I didn't have any problems finding the parts I needed for the Senco 600. However, I did another video fixing a Porter Cable FN250 finish nailer and ended up having to make one of the parts. I'm not sure how long it'll last. Thanks for watching!
Thanks! I was actually given 2 different nail guns, the next video will be available tomorrow and it was much more challenging. As for the oil, I just used standard air tool oil, the same stuff you drip down into the air fitting before using any air tool. Thanks for watching!
Hello i just watched your video on the SN 4 nail gun you pulled apart. I have exactly the same one, great nail gun. On mine the red (i think you called it bumper seal) has broken .Im trying to get a new one, but I've been told they don't make them anymore, is this true please .Hope to hear from you. Cheers Robert
Yeah, you want the inner lip under the edge of the white ring and the outer ridge of the seal facing out, towards the front of the gun. Does that makes sense? You can see me installing mine at 20:22.
I installed an o-ring replacement kit in my 600 and when I reassembled it, it vents air from holes in the head above the trigger mechanism. For the life of me, I cannot figure out what is going on here. I have check and double checked. Any suggestions?
Air is leaking from the front or the back of the gun? If it's leaking from the rear, did you replace the valve seal (the big clear flat plastic ring)? If it's leaking from the front, maybe the flat black gasket (that the 4 bolts go thru) has a tear in it. Would you be able to post a picture on Twitter or Instagram showing the exact location of the leak?
@@Mikeattempts If you look at the head (the black cap part), directly above the trigger piston you will see a fin that has a horizontal hole that goes all the way through it. Air comes out those holes but does not actuate the piston. I did not replace the valve seal but have one coming in. It's the only thing I didn't replace in the top end.
I'm willing to give it a guess but I still don't quite understand where it's leaking from. I read both of your comments, where you described the leak, multiple times and I'm still unsure. Did you replace 3 o-rings on this gray piece: 13:57 and also 3 o-rings on this white ring: 16:54 ?
There could be something wrong with the trigger valve or the tip of the driver could be rusted solid at the front of the gun. Those are just guesses, I'm not a nail gun pro. :)
Did you notice the o-ring on the valve that was missing a section about an inch long? Plus, at least one o-ring was hardened and brittle on the trigger valve. The o-ring kit was cheap and I figured I might as well replace 'em all while I was in there. Thanks for watching!
The driver still moves forward as long as the tip is pressed against something, right? Either way, it wasn't going to work properly without being repaired.
Senco O-Ring Kit:
amzn.to/2CQxOgH (affiliate*)
Senco Valve Seal (BF0203):
amzn.to/2P96mgp (affiliate*)
*Purchasing from these Amazon affiliate links earns my channel a small commission. Think of it as a tip that doesn't cost you anything. Thanks for the support!
I bought a Milwaukee framing nail gun for 60 dollars at a yard sale and I don't have a compressor to test it yet and I noticed that the pin that hits the nail moves when I put the nailer upside down and if I put it down it moves again do you think there's a problem with it?? I bought because I want to build a small shed
@@SANTAMUERTEXIII I don't know a ton about nail guns but it sounds like the driver seal might be bad (or missing). Once you're able to connect it to a compressor, you'll know for sure. If the seal is bad, it's usually cheap and easy to replace. Even though this video covers a Senco gun, your Milwaukee will be very similar. Let me know what you find out.
Always nice to get old nailers for free or cheap and rebuild them. I have a Senco SN325 I rebuilt and was amazed at how many o rings they use in the trigger, about the same amount as in the rest of the gun. It is a great nailer.
I also own 3 Paslode 5300 Plus nailers, also great guns. When rebuilding them their is only one o ring in the trigger and that is only to seal between the trigger and the housing. Complete it only has 10 o rings. I really like both of the older nailers from these companies. Thanks for the video.
Yeah, from my limited experience, air tools are pretty easy to repair. I agree, the Paslode nailers I've worked on do have a simpler design. It's nice that rebuild kits are still available for these older nailers. Thanks for the comment!
This guy is mechanically intuitive. I've got an old senco framing nailer to rebuild. I appreciate this video.
Thanks for the feedback, it's good to know the video will be helpful when rebuilding your nail gun!
Great video and well explained with good visual.
Thanks, I'm glad you liked it! :)
Good job. I have the same nailer with the same problem. Now I know what to do. Thanks Darlington, South Carolina
Let me know how the repair goes. Thanks for watching!
Thank you for putting this video together. I am about to do a seal kit on my 750XL. I am certain that the internals are the same and so therefor the repair process ... you answer all the questions i had before i even begin. Great work.
Thanks for the positive feedback, I really appreciate it! Let me know how the rebuild goes.
Well done. Doing God's work.
Ron Swanson would be proud.
I am not confident I will be able to do it, but this video has given me some hope.
Thank you sir
Haha, thanks for the kind words! :) You definitely can do it, this was the very first nailer I ever repaired.
Thank you for an excellent, thorough video! I needed this.
Thank you for watching! :)
@@Mikeattempts , thank YOU for making this vid. I am fascinated by HOW TO FIX IT (anything), because sooner or later it WILL break some kind of way. Learning about the insides of this nailer, and WHAT was bad, makes it a great instructional video. (If everything was good, you wouldn't be making this vid!) Watching this vid made me KNOW there is not way in this world I could take it apart by myself, AND get it back together again ! There are sooooo many parts, pitfalls to look out for, and S P R I N G S ....OMG !!!!! You made it happen !
@@bruceb3786 Sure you could do it on your own! This was the first time I had ever taken one apart and I'm no pro. :) If you like these kinds of repair videos, there are many more on my channel.
@@Mikeattempts , yes Sir, I am an engineer "and I can do ANYthing"........ so the story goes. What happens with me is that I draw sketches 'til I am crazy, and take 100 photos, during disassembly, where most others would take None. I tape things to cardboard backing so it will remain in the order it was removed, especially those ever-present "little screws", which otherwise would Always get lost. What I don't know about is damned springs.... the ones you mention fastidiously in the video, which always surprise me, jumping out all over the place, and Always taking some strange part with them ! THAT's when I am screwed, no matter how careful I have been otherwise. But with your excellent video, and the repair parts/o-rings I bought nearly 5 ^^ y e a r s ^^ ago (July 2017) from e-replacement parts, I am now ready to tackle this project on MY Senco FP600 ....... so there.
@@bruceb3786 Hahaha, yeah, I have the added benefit of being able to review the disassembly footage. Be sure to let me know how your FP600 turns out! :)
My bf0204 retainer (@1:20) was cracked, don't see any other O rings or seals that show wear or cracks. If it was mine id replace all seals but customer just wants it fixed as cheaply as possible.
Would that cause the head to leak air in your experience?
I don't have much experience but every nail gun I've rebuilt has always needed all of the seals & bumpers replaced. I've only ever found a couple O-rings that were obviously bad, but I just replace 'em all while I'm in there for peace of mind and because they're cheap. A torn gasket could also cause a leak.
@@Mikeattempts just got the parts in and replaced all o rings and seals and still having all the air leak out the back exhaust port(some of the plastic is missing on this one), any ideas on what to try next?
@@caminotorino4547 Can you tell exactly where the air is coming from? Is there a chance that back piece is cracked?
@@Mikeattempts yea I can feel all the air rush out that external black plastic exhaust cover all the way towards the rear held in with the short screw. It's missing plastic not exactly cracked but I was under the impression it wasn't a seal anyway so wouldn't matter
@@caminotorino4547 If you replaced all seals and O-rings, like I did it the video, then some piece must be cracked and letting air past. Either a plastic piece or maybe a crack in the metal cap itself. Sorry I couldn't be more help.
Bought one at a garage sale with the same symptoms. I can't wait to tear into it. Hope I have the same results.
I'm sure you'll end up with a working gun too! :) This was the first nail gun I ever repaired, and it was pretty straight forward. Let me know how it goes!
hello I have a senco frame 250d with coil the mechanism to advance the nails does not work. Can you tell me what would be the cause
THANKS
I'm no pro and this was the first nail gun I've ever fix or used. :) I have no experience with coil nailers but I would guess that it's either related to a spring in the coil housing or possibly a bad driver O-ring. With coil nailers, it sounds like there's also a piece called a "feed piston" which could be stuck.
Great video, just not sure how you got it to work without replacing the piston driver!?
Why, did something seem wrong with the driver?
Hi I e just bought a second hand one of these. And it came without the stop and spring. Is it still usable. Parts are hard to get here in the uk. Thanks
eBay is a great source for parts, if you're having problems finding them elsewhere. Thanks for watching! :)
I would like to know the name of the blue glue I applied to the bolt.
It's not glue, it's just blue thread locker. The most common brands are Permatex and Loctite. Blue works best in situations like this because you can still remove the bolts without too much effort. You would only use red thread locker if you didn't plan to ever remove the bolt again. Thanks for watching!
Where can i buy cylinder seals for a northern tool framing nailer
The only place I know of would be the Northern Tool Repair Center inside the store. That's the problem with some store branded tools, you can't find parts anywhere else. Sometimes, you can't even get parts, even if they still sell the model you own. I'm curious so please let me know if they're able to get the parts you need.
what size were the screws on the back cover? i have 3/16 and 7/32 and 1/4 hex and none of them fit perfectly, are they in metric?
Those screws should be M6-1X25mm. The part number is KB3255.
@@Mikeattempts thanks, what size hex key did you use for them? Is it 6mm?
@@caminotorino4547 I think 5mm hex.
@@Mikeattempts thanks, that was correct size
Thanks for posting, I have the same model that has failed
Thanks for watching!
Fixed my gun, many thanks to you ! What should the pressure be set on ?
That's great! I think 120 PSI is the maximum pressure for the FP600.
Mike attempts thanks Mike !
I replaced the valve ring seal on the same framing nailer, but when I tried to use it the valve ring seal keeps popping off. Do you know why this would be happening?
I guess there's a chance you have the valve seal backwards. At 18:00 in the video, you can see how the metal disc sits down inside the valve seal. The raised outer lip of the valve seal goes towards the front of the gun.
Mike could you do a dual action trigger replacement video on this same gun ? Thanks.
I found a dual-action trigger for the 601, 602, 651, & 652 but not the 600. Do you know the part number?
Mike attempts there are actually 3 part numbers in the exploded view in the owners manual. Are you saying the 600 is single action only ?
@@jkg2754 Sorry, I fixed this Senco framing nailer and a Porter Cable finish nailer back to back and forgot that I didn't actually remove the trigger on the Senco. I thought you were asking me to install a different trigger type. I pulled everything out from behind the trigger and replaced all the O-rings. I'm pretty sure the trigger itself is only held on by 1 pin.
What nails go in this nailer? 30 degrees? Full or clipped?
This gun uses 20-22 degree full round head plastic strip nails. CORRECTION: I was wrong, my model has the 30 degree magazine and takes 30 degree full round head nails. There's another version of the FramePro 600 that has a different magazine so keep reading below.
@@Mikeattempts Mike, Maybe I'm not seeing it correctly, but aren't the nails you put in the gun to test are Paslode paper strip?
@@frankriojas6380 You are correct, the previous owner left paper strip nails in the gun, and they do work. However, when I researched the nail type, it said this gun takes 20-22 degree nails.
@@Mikeattempts Mike, Thanks for the reply! I am getting this gun tomorrow and am convinced this takes a 30 degree paper strip. I just don't know if it's full head or clipped. You might be referring to the FramePro 600 FRH (full round head) model. I believe the FRH model takes a 21 degree plastic strip. I don't know why they both have the 600 number. It should have been a different model number, but they are different angles for sure.
@@frankriojas6380 I just double-checked and my Senco FramePro 600 does take 30 degree full round head (not clipped). One version of the 600 has a piece that pushes the bottom of the magazine further away from the grip, which would change the angle to 20-22 degrees, but mine does not. It is confusing and means I ordered the wrong nails (haven't used 'em yet). Sorry for the confusion and thanks for helping me realize my error.
good job! but , where i come from is a nightmare to get replacement parts
Luckily, I didn't have any problems finding the parts I needed for the Senco 600. However, I did another video fixing a Porter Cable FN250 finish nailer and ended up having to make one of the parts. I'm not sure how long it'll last. Thanks for watching!
Excellent How-To, brother! As ubiquitous as these things are, I am still fascinated with the mechanical design. Anything special about the oil to use?
Thanks! I was actually given 2 different nail guns, the next video will be available tomorrow and it was much more challenging. As for the oil, I just used standard air tool oil, the same stuff you drip down into the air fitting before using any air tool. Thanks for watching!
Hello
i just watched your video on the SN 4 nail gun you pulled apart. I have exactly the same one, great nail gun. On mine the red (i think you called it bumper seal) has broken .Im trying to get a new one, but I've been told they don't make them anymore, is this true please .Hope to hear from you.
Cheers Robert
Looks like you can still get the bumper for the Senco SN4: www.rebuild-kits.com/senco-sn4-parts/#o-ring-kit-seal-lb-3500-bb-0059-bumper-bb-0018
Is there a top and bottom to the valve ring seal ? If so what is the orientation? I didn’t remember when I took it apart. Thanks
Yeah, you want the inner lip under the edge of the white ring and the outer ridge of the seal facing out, towards the front of the gun. Does that makes sense? You can see me installing mine at 20:22.
Mike attempts yes, thanks for the quick response.
Good job. Thanks !!!
Thanks for watching!
I have 2 not shooting , i will try to find the parts first then follow your video direction take one apart and replace the parts . I hope i have luck
I'm sure you'll have no problems getting them operational again, let me know how it goes! :)
I installed an o-ring replacement kit in my 600 and when I reassembled it, it vents air from holes in the head above the trigger mechanism. For the life of me, I cannot figure out what is going on here. I have check and double checked. Any suggestions?
Air is leaking from the front or the back of the gun? If it's leaking from the rear, did you replace the valve seal (the big clear flat plastic ring)? If it's leaking from the front, maybe the flat black gasket (that the 4 bolts go thru) has a tear in it. Would you be able to post a picture on Twitter or Instagram showing the exact location of the leak?
@@Mikeattempts If you look at the head (the black cap part), directly above the trigger piston you will see a fin that has a horizontal hole that goes all the way through it. Air comes out those holes but does not actuate the piston. I did not replace the valve seal but have one coming in. It's the only thing I didn't replace in the top end.
You didn't have any o-rings left over from the kit, did you? :) Let me know if the valve seal solves the problem.
@@Mikeattempts It didn't have any effect. I'm really at a loss. To troubleshoot, I need to better understand the air path when firing.
I'm willing to give it a guess but I still don't quite understand where it's leaking from. I read both of your comments, where you described the leak, multiple times and I'm still unsure. Did you replace 3 o-rings on this gray piece: 13:57 and also 3 o-rings on this white ring: 16:54 ?
I have a senco equal to that friend, mine does not try to shoot anything, there is no air leak that could be
There could be something wrong with the trigger valve or the tip of the driver could be rusted solid at the front of the gun. Those are just guesses, I'm not a nail gun pro. :)
Very good video. Thank you.
I appreciate the comment, thanks for watching!
Great video
Thanks, I appreciate it!
Mike is yours a single action ? Meaning you can’t hold trigger and keep nailing ?
I can hold down the trigger and fire a nail every time I press the tip against wood. I also replied to your other comment concerning the trigger.
I was hoping you would only change the cracked seal first and put it back together and try it, before you did a complete rebuild.
Did you notice the o-ring on the valve that was missing a section about an inch long? Plus, at least one o-ring was hardened and brittle on the trigger valve. The o-ring kit was cheap and I figured I might as well replace 'em all while I was in there. Thanks for watching!
Cut back on the blue Lock tite unless you don't want to take it apart again.
Yeah, it did go on a bit thick. I don't plan to use it a lot, just around the house, so hopefully I don't hafta take it apart again. ;)
It will not fire without nails
The driver still moves forward as long as the tip is pressed against something, right? Either way, it wasn't going to work properly without being repaired.
That's about 20X more loctite than you need. A small drop is more than adequate.
Yeah, came out pretty fast, it'll be alright though. :)
you applied too much Loktite. Only need 1/2 a drop....
More = better, right? ;) Yeah, it's super thin and comes out fast but I don't think it'd cause any issues, just kinda wasteful.
Use your brain
Yep, good advice. ;)