How to Tear-Down/Rebuild "CHINESE" PCP Handpump

[@andygarcia1571]

Great job! Thanks for making this! I agree, this is the no brainer quick way to always have air without blowing a wad of cash on all that tank/compressor/dive shop drama. Keep it simple I say. Good exercise too like you said. Keep em coming!

[@STKO2011]

Andy Garcia thanks for watching appreciate it!

[@chrisfigueroa3361]

I finally learned about how a hand pump works I use it to fill my fx impact mk2 25 and fx m3 and my taipan when I feel like it

[@brianlittleforest631]

Thank you sir. Popped a seal on my pump the the 3rd time I filled a res on a tiny .25 cal a few years ago. Time to stop procrastinating and fix it.

[@Leonardokite]

Nice video James! Sure a nice air compressor would be great, but you need power to run it. The hand pump works as long as you do. Hard to beat. Great for survival along with a bigger bore rifle.

[@STKO2011]

Leonardokite exactly thanks!

[@fin_jan]

Good video. 11:43 the valve on my Air Venturi G4 got stuck. The pump would build internal pressure, but it wouldn't flow to the gun. Your video helped me fix it. The build is similar, but not exactly the same.

[@STKO2011]

Thanks!

[@davidchadwick1892]

now that's what I call an adjustable spanner !! many thanks, very useful video

[@STKO2011]

Thanks!

[@Primer595]

Thank you for this useful information. My "o" ring was destroyed and I has no idea how it got there or where it originally belonged. The tip about silicon oil instead of vaselene was super useful. I do not want to blow up anything! Thanks again.

[@Aaron-us5iu]

I just ordered a pcp rifle for the first time…. I can’t afford to spend several hundred more dollars on a way to fill it but I did get 2 hand pumps. One of these and also a 4 uncles one which I don’t have complete confidence in either thanks to the internet. I don’t mind labor and maintenance here and there but I shoot just about every single day multiple times a day and I’m just wondering what I got myself into… I’ve been shooting break barrels since I was a kid but these things are different…. More powerful which I am a fan of but it seems to me more unreliable and can be a lot of work to make something that cost upwards of $500 work properly 🤣 for what I spent you could get a real rifle so I hope everything is in order…. My pumps were cheap though I had to skimp somewhere so I got 2 and watched this. Thank you for taking time to show us this because no offense china 🇨🇳 but whoever writes instructions for those manuals….. doesn’t seem to really understand English you can tell🤣 but the hand pumps seem simple enough 🤷‍♂️

[@STKO2011]

Awesome to hear! Yea PCPS can be money pits...

[@airwolf269]

Great video. Some of these pumps have small amount of water in them to help keep the pump cool. I did not know about it at first like you i learned on my way of taking apart. Scared the hell out of me because i had no clue what the liquid was. Only after contacting the supplier through email they said its just water for cooling.

[@STKO2011]

Mike Whit yep, thanks!

[@randomvideosfilmcollection3161]

Mike Whit yea. A few are water cooled but i wouldnt use one of those seeing as how we try our best to keep moisture out of our PCP system and guns etc.etc. it just seems like a real bad idea.

[@markjosephmacayan8397]

Amount of water to be add in ml?

[@mr.octopus6972]

​@@randomvideosfilmcollection3161 Clearly you don't know what you're talking about. Wather cooled doesn't mean the litteral liquid we call wather. The liquid you put in there is antifreeze, prestone. Also, having dismanteled this pump a few dozens of times I know for sure that the liquid cannot leak into the pressurised air. It's located in a completely different chamber. Even if the seal would fail and liquid was to leak at the bottom, there's no way it could get into the 3rd stage valve.

[@mikebenoit6648]

Will the pumps all fit The Hatson Blitz 22caliber Air Rifle or any of the Blitz adapter that you can get with the Rifle

[@theFormidable1]

How often should you oil the pump? I got my first pcp gamo arrow rifle with a air venturi g9 pump, but the instructions aren't very detailed on pump maintenance and there's hardly any content on how to maintain the pump on the internet.

[@eddiecahall3824]

Every 70 pumps put 💯 silicone oil only on the pump slide. Only pump 25-30 pumps intervals then let cool. It's a very slow process. You can take it apart like in this video first and give it a good lube. And then after pumping your air gun about 10 15 times (fills) inside again

[@brorjordas1979]

Placed a few days ago an order on one of these chinese pcp hand pumps (might differ a bit though from the one in the video). Been watching thru online videos mostly cuz of interest in internal build etc.. Seems pretty good for the money imo.. Sure. O-rings and stuff can break or give in on them - but I bet that so can also on the 200€ pumps. I just wanted to go sub €50 myself cuz it's gonna be a project pump. I guess many pumps may break on you just because of a moment of poor focusing in the installation process by the assembler in the factory.. Apparently these are manufactured in way large numbers thru time. Luckily, spare parts come along - just in case something like that has happened. Been thinking of quickly disassembling my pump after it has arrived. Just to make sure everything is all okay before it getting into heavy use. Was a good video. Thank you!

[@susanmarie4257]

that you James .I haven't needed to rebuild it yet but I did get the kit with it .I think im going to buy another cheep pump 'because the od looks that same size as the QB 78 air tube .and if im right I'll take it to the machine shop and have my brother copy the qb air tube then put it all back together and then I should be able to pump it to up to 4500 psi

[@Magnum1912.]

Best I’ve seen,cheers 👍🇬🇧

[@potatothorn]

excEllent! i took your advice and got one of these pumps, seems good so far // your tip about using a mallet to get the top to screw off solves the problem, i will need to lube it eventually and couldnt figure out how to get it off it is so tight but the mallet will do it thanks

[@GoGunCo]

what size spanner do i need?

[@jerrycrowe8448]

So not everyone of these are water cooled?My manual mentioned water cooling and said it was already added but I've had mine apart twice and nothing no water oil nothing. I've tried to get hold of the maker and I've never gotten any response and to send it back will cost me almost as much as I paid. I've had it almost 2 weeks and unfortunately I've had it apart 2 first time one week after and again today. I don't mind the excercises and God knows I can use it. Also the gauge does your take oil and if so what kind again mine mentioned this but I couldn't find what kind and I wanted to charge my gun as it arrived a couple days before the pump so I thought let try and wala it worked. Great video and as always informative as always and bye the way I ordered the kral thanks to your reviews. Keep it up I'll be ordering a couple shirts and yeah what is the largest size you sell

[@LowkeyAirgunner]

Did you figure out more about this type of pump since? The one I got says water cooled and sealed forever but the lubing instructions are very unclear

[@samuelsherwood298]

Hey bud👋✌, my handpump has alot of grease down at the bottom, is this normal or has a seal went bad? I haven't hardly used it and its a hatson handpump.

[@roberttheriot7612]

hi james; when i start pumping after about 3 to 5 pumps when i pull upwards it sucks it back down very hard to pull up after that i have no idea where to start took it all apart everything looks good can you help me out thanks

[@silvawill89]

You just saved me! Thank you so much!!

[@jamesjamesjubilee6444]

Where do you buy the rebuild kits from ?

[@MrTruth76]

Good info. Mine is already losing air after 3 weeks.

[@SuperDelphinidae]

No coolant in the crown nut chamber?

[@mdsouz]

Thank you; nicely done and narrated.

[@darryljones6129]

Great video brother. Thank you for explaining it so well.

[@jesslanders1700]

Thanks bro. Now I can do, too.

[@nhwoodsman7760]

My wife got me a PCP pump for my birthday ilate December. didn't open it up till March. After I opened it I figured out that someone had tried to put it together before so it was halfway put together Yet half of the pipes were used they were still in a bag so I need to completely take it apart and start over from scratch . I might end up buying another one because I don't know if all the pots are actually there or not .

[@mr.octopus6972]

Most airgun dealers are shipping them fully assembled. Then if it fails it's on them not you...

[@mikebenoit6648]

Magnetic pans work good so you don't lose anything

[@mr.octopus6972]

Magnetic pan doesn't catch a rubber balls (the exact same one that is always rolling away under the fridge because you forgot about it). 😅

[@BillyBobTup]

Excellent!

[@chrisreeves8402]

Hi there wounder of u can help when I push down on my pump loads of pressure builds up.and won't pump the handle up or down

[@mr.octopus6972]

Your pump probably got dirty inside. 90% of problems comes from that. Clean it before changing parts you didn't have to.

[@jeffestrada6857]

Thanks mate appreciate it 👍

[@aSunsayy]

and where is changing cooling liquid?

[@agexsoutdoors]

Great video STKO

[@STKO2011]

Airguns extreme thanks!

[@plainwornout3564]

I believe spray Silicone is flammable. I used it on a drill press at work and got the spray near the motor and EL- FLAMEO

[@STKO2011]

That's what manufacturer recommends...

[@ElectronicNoobBlog]

EL- FLAMEO was caused most likely not by silicone but propellant (most likely propane / butane).

[@mr.octopus6972]

It's not the silicone that catched fire but the propellant inside the can. Meaning that your machine was already making sparks when you sprayed... Hust spray when it's powered off.

[@kevinalt1707]

I got this pump an it never worked out of box,, so I replaced all the orings witch was supplied,, an still did not , I have so many hours in this pump trying to figure out why it would not work that I finally gave up ,, mine keeps building pressure on the up stroke until I can’t pull it up no more

[@STKO2011]

Kevin Alt sounds like piston is in backwards or oring is leaking...but I would start with lubing it with silicone lubricant

[@kevinalt1707]

Shoot To Kill Outdoors I just realized mine is a little different than urs, same block though, different internals, I got mine from Walmart.com for 40 bucks ,, maybe I just got a 🍋,,

[@STKO2011]

Kevin Alt maybe....

[@mr.octopus6972]

Dit you try to clean it. Doesn't sound like a mechanical problem... 90% of the problems comes from that sticky goo formed by oil and dirt inside. If you have the model with the small rubber ball, it's probably just this you have to clean. kzbin.info/www/bejne/ZnXOp6mIlqyDmsk

[@Sertao2013]

Where are the moisture filters that come on all the other pumps ? Why doesn't this one have a filter ?

[@mr.octopus6972]

Treads are pretty common on all fill probes and theres a whole bunch of adapters available on the market. I don't know which one you need but the answer is yes. Try your hardware store tho, you may save some $

[@TheCraigy83]

1200 strokes 2x 😨..i would of had an actual stroke ! i had an air arms s410c about a decade ago with a pump...it did a tiny little squrt of air per stroke ! it used to give me bad back...was glad you didnt get any grease on the t shirt ! was worried at the start😆. 🙂👍🏻

[@STKO2011]

fathead adolf barry haha yeah! I had to take a break every 3-400 strokes...let pump cool down and my arms felt like noodles haha

[@STKO2011]

Tim Briggs haha no problem and thanks!

[@chrisfigueroa3361]

Good video thanks brotha ...i got a pump like that well some what like that I was afraid to use it on my new gun ..now watching this I'm not so ty again

[@STKO2011]

Appreciate it!

[@henrychristopher9131]

have you found a place to buy rebuild kits for the Chinese pumps.i just got in the pcp world.bought a gamo urban.

[@STKO2011]

Probably Google search your pump and see

[@Primer595]

Thanks mate ,that has been a great help.Cheers!

[@STKO2011]

Thanks for watching!

[@jaredmartin1635]

Thanks, lifesaver 👍

[@chrisreeves8402]

When I use my pump its hard to push down and pull back up on 150 bar any ideas thanks great video buddy

[@airgunhuntingpestcontrol3710]

You need to change the Third Stage Piston... It means it is worn out.... It is attached to the long thin rod

[@chrisreeves8402]

I have pulled out the rod but there is no washer in the bottom there is a valve with spring its causing a vacum and u pull the handle up if u let go socks it back down

[@mr.octopus6972]

Just dismantle the pump and give it a good cleaning before starting to change things you shouldn't have to. 90% of the problems comes from dirt

[@Jlitnin01]

what oil do you use on your pump and how often do you oil it?

[@STKO2011]

Silicone spray lubricant and about every 250 strokes I think my manual said

[@backspin6698]

Thanks for sharing. Been looking for a "backup pump" Can you recommend this pump?

[@STKO2011]

Backspin66 l like it alot, ebay link is in description

[@davidcottom7750]

hi from the UK,I've had my hatsan pump for a while now and can no longer pump up my rifle because the pump just locks up solid would you say that it needs a full o ring replacement also the spring in the base of the pump is very tired and rusty do you need some silicone grease when replacing o rings atb Dave

[@STKO2011]

I'd try lubing with silicone spray first and if doesn't help then you would probably have to rebuild

[@mr.octopus6972]

90% of the problems comes from an accumulation of dirt and oil inside. Clean it before starting to change things you didnt have to. Too much oiling is doing the opposite of helping, some moving parts are getting jammed in a goo...

[@sanros7807]

the pump I have the gauge is full of oil. do you what kind of oil that is and when low is it suppose to be filled?

[@STKO2011]

Synthetic oil probably and I never heard of refilling a gauge

[@farciarz5000]

Thanks

[@davidgangte9320]

Good video + background!!!

[@brianlodge8502]

Great job thank you

[@susanmarie4257]

hello James thank you for the wonderful info .but I have a question .I bought one of those hpa pumps from amazon .it said it is water cooled .and im afraid to take it apart because I don't know where the water is located inside .and I don't want to ruin it

[@STKO2011]

If it came with a repair kit then the water cooled unit is most likely sealed

[@mr.octopus6972]

kzbin.info/www/bejne/ZnXOp6mIlqyDmsk For tear down and cleaning instructions from the maker. I tried, it works. You have to keep it very clean inside (especially where the small rubber ball is located) or it stops working (not broken, just not working).

[@tommyjoestallings3339]

I have a question I was trying to rebuild my pump and this white fluid poured out tell me about a half a plant can you tell me what that is and where would I get replacement

[@STKO2011]

Not really sure, most likely is silicone lube of some sort

[@mr.octopus6972]

Your pump is liquid cooled. You can use wather instead. Look at this video (and also part 2) kzbin.info/www/bejne/ZnXOp6mIlqyDmsk

[@chrisfigueroa3361]

Does that pump have water and oil separator in it or no ?

[@mr.octopus6972]

The water used as a coolant is tightly sealed inside it's own compartiment. You may need to change it after a while it gets dirthy. These pumps (from my own experience) needs a lot of dismanteling for cleaning purpose. 90% of the malfunctions comes from dirt inside. Oil should be used very sparcely because when it gets inside it creates problems instead of solving some.

[@mr.octopus6972]

kzbin.info/www/bejne/ZnXOp6mIlqyDmsk

[@Light_357]

Ha ha he said “Big nutz “.

[@jmerrow02]

A weird note I have been using my compressor so much I almost forgot I have one lol one thing I have noticed I shoot my rifle A lot more with the compressor then I did with using the hand pump it's interesting to me

[@STKO2011]

Thanks,I bet! Haha I usually shoot about 60 shots in both guns a day on average and pump them up before I go to bed...but I'm suppose to be meeting with a sponsor tomorrow that's a new airgun store and I'll be able to use their air compressor while I'm there shooting

[@jmerrow02]

Shoot To Kill Outdoors good luck that might get you some great deals on new guns

[@hunter-jx4my]

Shoot To Kill Outdoors be still my little heart finally my video I'm going to watch you sing like three hundred times I've already got it my playlist Jimmy. LOL

[@STKO2011]

Tim Briggs haha

[@STKO2011]

I'm going to workout the details tomorrow hopefully if its not a blizzard

[@williamwallace1148]

Ahh mine had no diaphram under the hande

[@Gunner-ll1zd]

Good video!

[@STKO2011]

Matthew K thanks!

[@yongteckyew1957]

Hi brother~! Thank you for showing us how to disassemble it! May i ask? im having an issue right now... May pump is very hard to pull up after around 50 bar of pressure. I think there is something broken inside the pump but im not sure which o ring is it. Pushing down is easy but pulling up is suddenly became very hard!

[@STKO2011]

May try lubing with silicone spray if you haven't already, sounds like the problem is at the top of the pump

[@yongteckyew1957]

@@STKO2011 thank you brother for the help!!! gonaa try it soon!

[@yongteckyew1957]

@@STKO2011 thank you for the help brother! will try it soon!

[@STKO2011]

@@yongteckyew1957 no problem!

[@mr.octopus6972]

Your problem comes from the fact that the pump is dirty inside (90%) of the problems comes from this, it's probably not broken. kzbin.info/www/bejne/ZnXOp6mIlqyDmsk

[@dkrplr]

I have a brand new umarex pump that after a few pumps it builds pressure then I can’t get it to come all the way up and I can’t push it all the way down. Can anybody help me? I sure hate the hassle of shipping it back if it is an easy fix.

[@chrisp.5272]

Mine won’t hold pressure…

[@diesect33]

Thanks dude, I'm buying it before the gun so it was my next purchase. How long does it last before rebuilding roughly? Thanks.

[@STKO2011]

Rockbiter 25/125 depends on use average person could be years before needing rebuilt...and sometimes orings go bad faster than others...usually when it takes more pumps than usual is when something is wearing out

[@mr.octopus6972]

You can't be sure. Mine has worked only for 2 or 3 fill-ups and then it began to malfunction. I changed some o-rings with the provides rechange parts and it's working great ever since... Once you know how the pump works on the inside, after that you know what are the only 2 places that needs lubrification. The best advise I can give is put on 50 to 60 strokes and then let it cool down completely before pumping another 50-60 strokes. This thing gets crazy hot very fast, if you pump too much you burn the seals.

[@Fazman81]

I got one of them cheap Chinese pumps and I can pump my Hatsan AT44 up from 1000 to 2000psi with around 120 pumps. If I let it go down to 500psi it usually takes around 150 to 160 pumps. Do you think thats pretty normal? Doesnt seem too bad to me.

[@STKO2011]

Yea it's hard telling, really depends on max pressure and size of the cylinder/bottle your pumping into...for instance my Umarex Gauntlet bottle is 3000psi 13ci/213cc from 0 to 3000psi is almost 250 pumps...from 1150psi its about half that

[@Fazman81]

Shoot To Kill Outdoors You know what I was wrong I meant to say from 100bar to 200bar which is 2900psi. From 0 to 2900psi usually is somewhere around 200 pumps. So that seems pretty good because I have a 180cc reservoir. How many shots do you get from the Gauntlet? I get around 30 from my Hatsan AT44-10 .25cal.

[@STKO2011]

Frank Faz 60+ shots depending on the pellet

[@mr.octopus6972]

​@@Fazman81 Did you know that the Hatsan AT44-10 has a hidden power adjustment screw located near the hammer ? I don't remember reading nothing about it in the owner's manual. Last year I modded mine so the power adjustment may be done without dismanteling the gun each time. Works like a charm. Now I can use my gun from as low as 150 fps (which is great to shoot paper targets in my basement) to a whooping 1100 fps and more (depending on the pellets I put in there of course) just by turning the little shaft that comes out of the back of the gun.

[@canyonmann1]

What about the white filter like pellets that come with the pumps? I can't figure out where they go. Any ideas?

[@STKO2011]

canyonmann1 probably at the hose connection threads to keep moisture low

[@canyonmann1]

Great. Thanks for the advice and keep up the great videos!

[@STKO2011]

canyonmann1 appreciate it!

[@mikeheasman2594]

Think that is part of the one-way valve which is in the bottom.

[@mr.octopus6972]

​@@mikeheasman2594 No he's talking about the moisture filters. They provided a couple of them with my pump too.

[@bryanmorgan8940]

Great review! Does your Gage have oil in it? No sir

[@STKO2011]

Bryan Morgan Thanks! Yeah they typically have silicone oil in the gauge

[@bryanmorgan8940]

Shoot To Kill Outdoors mine came dry do I need to get some

[@STKO2011]

Bryan Morgan not sure, does your manual say anything about it?

[@bryanmorgan8940]

Shoot To Kill Outdoors no sir

[@STKO2011]

Bryan Morgan well you might have a dry gauge then, have tested it? By pumping up a gun?

[@brandonmotta5248]

Hi I got a question can moisture get in to my gun if I get this pump because I don’t want my gun to break because it doesn’t have the moisture descent it kit. My Benjamin pump is broken now it just doesn’t want to pump it pushes the hand up I fix all the o rings and everything. can YOU RESPOND AS SOON AS POSSIBLE THANK YOU

[@STKO2011]

Brandon Motta it shouldn't... moisture will form switching from cold to hot weather or caused by humidity... usually you'll shoot the moisture out

[@mr.octopus6972]

Moisture filters are very easy to find in every air gun dealers website. You can add as many of them as you want in a row. And yes you should have one.

[@Fazman81]

Do you know how to adapt an air filter to keep water, oil, or particles from getting into my gun?

[@STKO2011]

Frank Faz if your pump doesnt come with a filter or hole to install one...best bet would be an inline filter

[@Fazman81]

Shoot To Kill Outdoors Yea it doesn't come with a hole in the base. Where could I go about finding one, Ive looked online without much success. I know it has to be something rated for high pressure. So I cant just use a regular air compressor air filter. Ive been getting small particles in my gun and it started leaking air.

[@STKO2011]

Frank Faz this may help.....m.ebay.com/itm/PCP-Hand-Pump-Accessory-Moisture-Filter-Kit-Desiccant-Kit-for-Airgun-Pump-/292363991044?_mwBanner=1

[@Fazman81]

Shoot To Kill Outdoors Koo! Thanks!

[@STKO2011]

Frank Faz no problem!

[@eliassarkis3923]

Hi , i am having an o-ring problem in the check valve (12:14 in the video ) the o-ring is broken at 120 bar even thought i am using silicon oil . Any advice ? Thanks

[@johnblackburn2237]

My pump's manual is the worst Chinese to English translation that I've ever seen. It's totally worthless. Thanks for the vid

[@STKO2011]

Appreciate it thanks!

[@eliassarkis3923]

STKO hi , i am having a problem with the o-ring in the check valve (12:14 in your video) , the oring is always broken at 120 bar even though i am using silicon oil all the time . Any advice ?? Thanks

[@eliassarkis3923]

Hi , i am having an o-ring problem in the check valve (12:14 in the video ) the o-ring is broken at 120 bar even thought i am using silicon oil . Any advice ? Thanks

[@johnblackburn2237]

@@eliassarkis3923 Sorry. I don't really know anything about these pumps.

[@claudiuspulcher2440]

"first check the instruction manual..." hahaha if you tried reading my instruction manual...

[@tommyjoestallings3339]

Mine was in kind of a half broken Chinese English made no sense language instruction manuals absolutely useless my pump has poor this white water out of it for some reason when I was taking it apart and no where on the internet can anyone seem to confirm what happened

[@tomnugent2148]

Thank you brother. Nothing is too simple that it can't be misunderstood.I can never follow those Chineese instructions, lost in translation.

[@STKO2011]

Thanks! Please Like, Share, and Subscribe and if you like airgun related videos go checkout my second channel "ALL ABOUT AIRGUNS"kzbin.info/door/TdlOymjE55N6wsuUsGNNMQ

[@jmerrow02]

Ps great vid

[@chrisfigueroa3361]

Nope mine has water or oil in it im not going to use it at all screw that im send my pump back I don't know anything about water and oil in a pump lol

[@Alfordclan1]

9

[@diesect33]

How many and how long does it take to full your guns sir? I have some heart failure issues is why I ask (no no one but me is liable for my actions lol. I'm not an SJW turd). I know my limits and plan to get the yong heng anyway but I'm poor so I can't even get a gun and pump package, gotta save for piece by piece. (Full year for the 190 I paid for my 32fpe hatsan model 125 vortex in 25cal for example.

[@STKO2011]

Rockbiter 25/125 2000psi Beeman Chief with 135cc reservoir, 80 pumps from 0psi, then about 1 pump per shotq5...Umarex Gauntlet 213cc bottle, over 200 pumps from 0psi to 3000psi then after 60 regulated shots takes about 100 pumps

[@dkrplr]

I have a brand new umarex pump that after a few pumps it builds pressure then I can’t get it to come all the way up and I can’t push it all the way down. Can anybody help me? I sure hate the hassle of shipping it back if it is an easy fix.

[@mr.octopus6972]

Its only dirty inside. Clean it.

[@dkrplr]

I have a brand new umarex pump that after a few pumps it builds pressure then I can’t get it to come all the way up and I can’t push it all the way down. Can anybody help me? I sure hate the hassle of shipping it back if it is an easy fix.

[@mr.octopus6972]

Its probably only veryy dirthy inside. Clean it before changing parts you didn't have to. kzbin.info/www/bejne/ZnXOp6mIlqyDmsk