How to Disassemble/Teardown Beeman P17, Replace O-rings, Reassemble and more
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- เผยแพร่เมื่อ 7 ก.พ. 2025
- Beeman P17/Marksman 2004, complete teardown/rebuild.
O-rings:
#006 1/8"ID X 1/4"OD X 1/16"CS: Valve stem tip
#008 3/16"ID X 5/16"OD X 1/16"CS: Valve plug
#009 7/32"ID X 11/32"OD X 1/16"CS: Breech
2.5mm X 20mm exact metric replacement: Piston
#117 13/16"ID X 1"OD X 3/32"CS: Piston, Tighter fit
This was the BEST tutorial for working on the P17 I have ever seen. Thank you SO much for the detailed instructions and commentary.
What would your worst tutorial have been like
I can't explain how much I loved this video. The amount of things I learnt from this satisfied my curiosity tremendously! I still want to learn so much more. Thank you!!
Thank you! Just received a P-17, and this video was instrumental in making the decision and in the initial cleaning and "burr" check. I add my sincerest thanks and respect to the many others herein.
i cant thank enough youtube and people like this enthusiast, i wish all of this was around in early 90’s when i was a teen, but better late than never
My P17 just stopped holding air so this video is going to help me for sure. Great video.
The most informative video detailing everything anyone would need to know, and some things one must know, to get the best out of this air pistol. A superb presentation. Many thanks.
Well done. It's a superb, classic design made affordable... and is well worth even extreme mods. Probably the best deal in airgunning, ever.
yes it is
10:39 THANK YOU! I drilled a couple holes in the plastic so as to be able to mount a 6 rail picatinny and noticed that tiny hole afterwards and thought I did that without noticing! I put electrical tape over it and shot it a once and then it wouldn't fill with air after that. I started looking for a replacement piston (impossible it seems) and found this video. Took the tape off and now it's back to normal! What a relief!
PS- I use _sewing machine oil_ for pistons. It's a great lube and is made for parts that move a lot. Works on just about anything. I do locksport and use it on old locks too.
Absolutely the best instructional video about this model - thank you and best regards
Thanks for the video. Way easier than trying to figure it out by myself. Excellent idea using a light grey towel to do it on.
This was awesome! Thanks man! Replaced all the o rings cleaned and lubed with lithium grease and viton polymer molded o-rings. Purchased 180 pc. assortment at Harbor Freight $10.
You don't need to remove the three fingers to change the seals! If you align one of the flat sides of the brass threaded guide properly it will clear those fingers during removal. Another tip is you do not need to disassemble the brass guide piece to change seals either. Both seals may be swapped out from the small end of this component.
Now you tell me! :)
After replacing both valve stem orings is it possible the small oring at the bottom of the female half the valve is bad I still have a leak if so is that seal the same size as the valve tip seal?
Thanks for the great video. My favorite air guns are mechanical spring single action guns like break barrels so I am glad I found out about this affordable little gun. You do a nice job maintaining it and I will do the same when I get one. I treat my other units with similar care, cleaning and lube. Working on them is a good 50% of the enjoyment for me. Cheers!
Excellent video….
I’ve come up with a trick on the tricky larger o ring on the spring loaded brass valve….
If you take the P spring out if the trigger assembly with the o ring on it and I
Use your dental pick to expand it you can pull it down over the spring and it drops in place! Fiddly but only took me about a minute or two.
The more you do the easier it will get👌👀🇬🇧
I’ve named it The Dodgey Hodgey P17 Valve Fix!!!!!!!!! 🤣😂🤣😂🤣😂
Great video. Thanks for making it. I picked one of these up last week and I am really enjoying shooting it.
Straight shooter fer sure!
Thanks so much. The smallest seal came lose (left it out in 90 degree sun) and your video was a life saver. Good as new.😊
muchisimas gracias por el video,mi beeman p17 perdia aire,la desmonte hace 1 mes,y no conseguia montarla,gracias a tu video,funciona perfecta,solamente se le salio una junta,la coloque dándole la vuelta,ni siquiera tube que cambiarla y le puse un poco de aceite de silicona para nutrir las gomas,funciona perfecta,mejor que cuando la compre gracias!!!saludos de España
La mía de repente cierra pero a la vez se le sale el aire después agarra de nuevo al 100 no lo hace seguido
👏🇬🇧 Excellent. The best video available ..TY your time and effort are appreciated..
Totally enthralled great info and great video thankyou.
Absolutely fantastic video. I was just given one of these pistols. I like it a lot the way it is..Thanks again.
This guide saved my gun, thanks
Great video. Great help. Thanks!
Killed a lot of rats in the last few years, within 15ft out my kitchen window....if it lacks at all it in power it makes up for in accuracy.....99% one shot one kill....record is 12 rats in under 2 hours....and they seem to have 'moved on'....Great video..
Great tutorial and so useful. Many thanks for this info. 👍😎🇬🇧
Outstanding video, super useful. Thanks
Super video merci beaucoup, hier soir j'ai pu démonter mon beeman et résoudre le problème, j'attend les joints commandés avec impatience, maintenant je sais le faire !! 👍👌
my english is not verry perfect but i like verry your video, because the explications is clean and i learning at me whis this tuto, thanks very much
Holy crap you made that thing accurate
Brilliantly done!❤
Thank you very much for this excellent video.
Rick thanks for a thorough how to video. Have 2 P17 that im going to work on and ordered the seal kits from you on eBay. You mentioned Mac1 Secret Sauce do you know if you can get this anywhere besides Tim I don't think he is back up and running since his motorcycle accident in 2022.
Sound information, many thanks .
Nice Tutorial, Thanks 👍
I purchased a P-17 a year ago, December 2023 to be exact. After putting less than 100 rounds through it the pistol couldn't generate enough pressure to unseat the pellet in the breach. Pump, aim, pull the trigger, click, nothing. Open the action and the pellet just sitting there, looking back at me. I suspect one of the seals took a crap on me. Watched your video, picked up a couple of Harbor Freight "Storehouse" O-ring kits to do your rebuild. Unfortunately no one includes a A117 size O-ring in their assortments. All jump from A116 to A210. In the metric assortment they include a 3mm x 20 mm and a 4mm x 20 mm, but no 2.5 x 20 mm size. What are your thoughts?
Great Vid. Are the pins tapered?
Thanks for the information
Great video. Thank you.
Nice one 👍😎
Thanks for that it's great 👍
great video
My safety was rusted shut, so I removed the mechanism. Now it fires whenever I cock it. Is my gun fubar'd, or is it salvageable?
I also disassembled and reassembled the trigger mechanism. Could I have messed something up there?
Thanks!
Werd yo.... excellent video. No bs
So... let's say I have a breach o-ring that pops off after each shots... Does the teflon tape at the other end of the barrel could solve this?
Buddy pumped the p17 2 times now won't fire, hard to open and close. Any way to release the air don't want to take it apart charged.
Can you take out the compression chamber without removing the trigger mechanism?
Very informative, which seal would cause air to leak out of barrel after charging? thanks
any of them I'd say
Is any of this increasing the power & velocity?
AWESOME VIDEO BROTHER ,NOW, HOW ABOUT WAYS TO MAKE MORE POWERFUL ,I WAS THINKING OF CUTTING ANOTHER ORING GROOVE FOR TWO TOTA; ORINGS AND DRILLING SOME MORE AIR INTAKE HOLES OR MAKING THE ONE THERE A LITTLE BIGGER ,WHAT YOU THINK ?
I read somewhere if you put aluminum foil tape on the end of the piston it would increase the pressure but... they only got an extra 25fps. and even more of a beech to cock
Good day! I would like to know what kind of lubricant I should look for to use on the O rings of the air gun, where I live (South America) I can't find the one you used.
Thank you so much. Anyone in Canada know where to buy replacement O rings - especially the piston one? Thanks!
When I cock my Beeman p17, it releases the air from the port that is supposed to shoot the pellet. What could be the issue?
Me too!
Would this be similar on the P3?
Just lube it. As for the slight lip front of barrel I was told it was for spin and was not that criticall for accuracy.
But hey maybe whatever . The tip about the bur is good. but this model is smooth as silk air intake.
20:45 20 feet lol i saw a shodow hovering a few ìnch lol
we call that tape P.T.F.E. POLY TETRA FLOURO ETHERLENE , teflons a frade name pan non stick surfaces ? , u sponsors by SuperLube , said it enuff times man ?silicon oil / grease works just aswell good detail on video though, ebay barrel crown tools few pounds /dollars guys
OK do the same thing with a P3 :)
Yep I agree with others; this gun fails, trash and buy another. Yeah yeah the cost to repair is cents I'd rather buy another, IF it even lasts that long. This video is great; convinced me to never bother trying to repair this. Not my thing. One BIG question remains though; if this was a P3, would the inner workings, parts, etc be noticeably different, and/or any better, that would justify the P3's ridiculous price? I haven't found a single video showing inner-workings differences between P3 and P17. For the price, the P17 is a no brainer but I'm super curious if the P3 is worth it or whatever "piece of mind" a German made, supposedly higher-quality gun offers. So far I've seen no evidence that supports the P3 pricing scam.
The internals look and function the same, the p3 is just a better fit and finish on everything inside and outside of the pistol. I have owned both through the years and IMO go with the p17 if you want to tinker and go with the p3 if you want something solid out of the box (and don't mind paying the equivalent of 5-7 p17's...) Great platform regardless.
This thing costs like $30. Just buy a new one.
It cost a cents to fix it .
go to the nearest mall and buy some shh .. thats your thing : )
Your mom was 10 dollars but she can't be replaced!
? 7 bucks!
Lol
show me last o ring change on top of pump air discharge hole
Excellent video, thanks!
Nice work. Thank you.
Superb video - very helpful. Thank you.