2240 with hipac leaking



Author Topic: 2240 with hipac leaking  (Read 1211 times)

Offline JamesRA

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2240 with hipac leaking
« on: May 28, 2013, 11:01:11 AM »
I'm a newbie here and recently got a used 2240 with hipac and 2250 barrel from American Airguns Classified.  I have a new Benjamin hi-pressure hand pump but the gun won't accept more than 1000psi.  Once you stop pumping it fades back to 600psi.  I did the soapy water test on the connection at the pump and at the Foster connection.  No leaks and the bleed valve is tight.  But, I hear air rushing out of the 2240 body.  Previous owner said he used a tank but never went above 1800psi.

What could be wrong?  I think the guy said he got it from the Crosman Custom Shop..?  Should I contact them?  If this problem doesn't sound familiar or fairly easy to fix where should I send it?  Is there a place in northeastern Maryland perhaps?  Or wherever...  Am I in the right Gate / forum?  Looking for some guidance please.
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Offline JBird

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Re: 2240 with hipac leaking
« Reply #1 on: May 28, 2013, 01:04:57 PM »
Sounds like it may be leaking at the Hi-Pac connection.  Either try to tighten the Hi-pac slightly or remove it and add a drop of pellgun oil to the sealing surface and re-install it.  If that doesn't work you may have debris in the valve itself and it's not seating. 
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Offline jonnnyboy

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Re: 2240 with hipac leaking
« Reply #2 on: May 28, 2013, 01:19:43 PM »
If I remember correctly, there is a seal on the face of the valve that the co2 bulb or hipac must seal against.  Oftentimes, that seal will develop a leak.  That may need to be replaced.

joe
"Welcome to Tennessee, the patron state of shootin' stuff!"  ex-Marine Gunnery Sgt. Bob Lee Swagger

"A strong body makes the mind strong. As to the species of exercises, I advise the gun. While this gives moderate exercise to the body, it gives boldness, enterprise and independence to the mind. Games played with the ball and others of that nature, are too violent for the body and stamp no character on the mind. Let your gun therefore be your constant companion of your walks."  Thomas Jefferson

Offline JamesRA

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Re: 2240 with hipac leaking
« Reply #3 on: May 28, 2013, 09:07:14 PM »
Thanks but sorry, I forgot to mention that I soaped the junction of the 2240 tube and the hipac and that was tight.  Seems to me that rules-out the internal seal and the junction.  This rushing sound comes from within the 2240's body.

At this point I'll settle for a good Crosman / hi-pac repair person to get this thing fixed.

Who is the hipac Guru here?
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Offline demarisl

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Re: 2240 with hipac leaking
« Reply #4 on: May 28, 2013, 10:13:02 PM »
Not a guru but do have a HiPac.  The valve in the 2240 is not sealed in the tube, merely held in place with a screw, so there is no reason for the air to seek to escape from where the HiPac screws into the tube.  It can easily escape around the valve towards the breech.  Try unscrewing the HiPac and shine a light down the tube to see what the valve seal looks like.  If it looks okay then follow the installation procedures described here - http://www.powermax-hipac.com/Pages/UsageInstructions.aspx  If the seal is chewed up or missing then you will have to disassemble your 2240 and replace it.

Larry

Offline JamesRA

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Re: 2240 with hipac leaking
« Reply #5 on: May 29, 2013, 05:23:43 PM »
Yes I knew that.  Dummy me.  I will take your advice Larry and get my feet wet with this thing but I'm not real sure what I will be looking for as far as a good-looking valve seal.  I do have some exploded views of the 2240 so will look at those.

What's funny is that the gun came charged as in I shot a number of pellets and was impressed.  It sounded healthy.  Once I got the pump ... my memory is collapsing now ... I thought I got it up to 1800psi but then all of a sudden it sounded like a BB gun when I shot so I pumped again and that's when I saw that it was stalling out at ~1000psi.

I just hate having to fart with something assumed to be in working order.

Anyway, I would still like to hear of anyone who works on the 22xx products.  Or, is the Custom Shop as good as any for repairs and tunes and refurbs?
  • Elkton, MD
Beeman R1 .22
RWS Diana 54 T01 Air King .22
Beeman RX-2 / HW90 .20
Many S&W Springfield 78G & 79G CO2 pistols
FWB 124 Sport .177
Browning Leverage under-lever .22
RWS Diana 38 .177
RWS Diana 48/52 .177 (CDT tuned)
Stock 2250B
Customized 2240 long-barrel

Offline kj

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Re: 2240 with hipac leaking
« Reply #6 on: May 29, 2013, 06:34:03 PM »
you can't send your crosman with a highpac on it to crosman. the hipac unit is an aftermarket product that crosman cant service. you could take the highpac off and send it to them, but you can do it easier yourself.
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Offline grumpy

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Re: 2240 with hipac leaking
« Reply #7 on: May 30, 2013, 12:57:06 AM »
How tight is the Hipac  ? Theres a fine line between leaking and sealing.  As mentioned be careful of the seal. What color seal is on the valve ? I found it best to use the black one that comes with the Hipac rather then the original seal.
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Offline tkerrigan

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Re: 2240 with hipac leaking
« Reply #8 on: May 30, 2013, 12:06:41 PM »
If this gun was shot at 1800psi in the past, it is common for the valve stem seal to leak.  As stock, it is soft and designed for no more than 1100psi or so.  A Discovery valve stem can be installed though sometimes it needs seated in the valve by spinning lightly with an electric drill to match the seat as it has a harder seal.  Regards, Tom
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Offline JamesRA

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Re: 2240 with hipac leaking
« Reply #9 on: May 31, 2013, 06:45:51 PM »
Thanks for the support folks.  I've embedded answers to questions in the following test:

#1  I unscrewed the Hipac quite easily once the forward barrel clamp was removed.  With a light in the 2240 tube I see what looks like a golden-colored ring but with a crescent section of its circumference missing.  Inside the incomplete ring is a tan or caramel-colored donut.  I can't see inside the donut hole but I guess that's where the CO2 cartridge piercing pin is.

#2  I then loaded a CO2 cartridge and screwed on the cap as usual but did not get that normal progression from first contact-to-puncture "feel" but I cranked the cap fully tight by hand - no tool.  The first dry shot was a blank.  Striker hit but no barrel gas at all.  The second dry shot gave the usual feeble barrel report.  Third, forth and fifth dry shots sounded "much better".  But, seconds later I hear gas leaking from the pistol body.  Same rushing sound as with the Hipac Benjamin pump fill attempts

So, seems to me I must get a new 2240 valve assembly?  Should I get the whole kit if that's what it's called or is it parts that I need?  Cost is not an issue but ease and sureness of repair is.  I would rather drop a suitable assembly in vs. farting with individual parts unless it makes sense to beef-up the assembly before it goes in.

Question for grumpy:  What is the Hipac's "included" black seal vs. the original seal?  Jim
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Many S&W Springfield 78G & 79G CO2 pistols
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Offline jonnnyboy

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Re: 2240 with hipac leaking
« Reply #10 on: May 31, 2013, 07:04:54 PM »
Try a Google search on part number G397-012 and see if that is the part you need.  It is the Valve to 12 grm Powerlet co2 seal for the Crosman Valve.

joe

"Welcome to Tennessee, the patron state of shootin' stuff!"  ex-Marine Gunnery Sgt. Bob Lee Swagger

"A strong body makes the mind strong. As to the species of exercises, I advise the gun. While this gives moderate exercise to the body, it gives boldness, enterprise and independence to the mind. Games played with the ball and others of that nature, are too violent for the body and stamp no character on the mind. Let your gun therefore be your constant companion of your walks."  Thomas Jefferson

Offline JamesRA

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Re: 2240 with hipac leaking
« Reply #11 on: June 01, 2013, 07:09:57 PM »
Thank you for the pic jonnnyboy,

My seal is the same tan color.  Bright brassy ring around the seal seen with a light down the tube is not a complete ring - a section is missing.

From Alliance Hobby I bought the entire valve @@@'y + their High Performance Valve @@@'y and H-P hammer spring - what the heck.

Now, I believe I read that I don't need a different valve seal IF I stay below 2000psi.  BUT tkerrigan said no - that's too much to ask of the stock valve stem seal.  So, before I get my hands dirty and replace the valve what should I know?
  • Elkton, MD
Beeman R1 .22
RWS Diana 54 T01 Air King .22
Beeman RX-2 / HW90 .20
Many S&W Springfield 78G & 79G CO2 pistols
FWB 124 Sport .177
Browning Leverage under-lever .22
RWS Diana 38 .177
RWS Diana 48/52 .177 (CDT tuned)
Stock 2250B
Customized 2240 long-barrel

Offline robsamui

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Re: 2240 with hipac leaking
« Reply #12 on: November 14, 2013, 07:36:57 AM »
James RA - are you still active on this one?
Need any help?
I've just done this.
Rob
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Offline JamesRA

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Re: 2240 with hipac leaking
« Reply #13 on: November 15, 2013, 10:49:42 PM »
I gave up.  Put the new valve in, screwed in the hipac, used the Benjamin pump and same thing.  Leaks like a sieve.  CO2 cart?  Fine.

I just use it with 12gm CO2 carts.  Whatever.  The hand pump was a waste of money.  The hi-pac volume in a 2240 scenario isn't that good for anything anyway except for some temperature tolerance.  Right? 
  • Elkton, MD
Beeman R1 .22
RWS Diana 54 T01 Air King .22
Beeman RX-2 / HW90 .20
Many S&W Springfield 78G & 79G CO2 pistols
FWB 124 Sport .177
Browning Leverage under-lever .22
RWS Diana 38 .177
RWS Diana 48/52 .177 (CDT tuned)
Stock 2250B
Customized 2240 long-barrel

Offline Onebaddj

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Re: 2240 with hipac leaking
« Reply #14 on: November 16, 2013, 12:45:37 PM »
i live in fort worth if your close id be happy to take a peek at it. got a couple of the hipac's and love them. had the same problem you are describing and replaced the seal on the front of the valve with the hipac high pressure one and all was good. the stock seal would star leaking about 1500_2000 psi. on the hipac volume part it all about how the gun is set up. if you want power set it up to run 3k psi but you will only get a couple shots. if you want lower power more shots set it up to a fill of 1200 and get more shot. the only real draw back is its not regulated. if it was you could fill to 3k and reg to 1200 a.d get a ton of shots.

these are fun little guns with pretty much endless was to set them up. good luck and let me know if your close and want the help.
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Offline JamesRA

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Re: 2240 with hipac leaking
« Reply #15 on: November 16, 2013, 09:19:20 PM »
Mine leaks immediately.  Can't get it above 700psi.  Brand new valve and seal.  It's just a lemon.
  • Elkton, MD
Beeman R1 .22
RWS Diana 54 T01 Air King .22
Beeman RX-2 / HW90 .20
Many S&W Springfield 78G & 79G CO2 pistols
FWB 124 Sport .177
Browning Leverage under-lever .22
RWS Diana 38 .177
RWS Diana 48/52 .177 (CDT tuned)
Stock 2250B
Customized 2240 long-barrel

Offline JBird

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Re: 2240 with hipac leaking
« Reply #16 on: November 17, 2013, 09:52:10 PM »
I think people tend to tighten the Hipac too far.  I made this same mistake a few times, even though I thought I was being careful.  The best way to tighten it, I found, is to feel the first SLIGHT resistance and go about a quarter turn more.  If it leaks while you fill it then you can slightly tighten it some more (like an eighth of a turn at a time.) 
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Benjamin 392PA - .22
Ruger Blackhawk .22
Crosman 1377 - .177
Umarex EBOS
Crosman 2240 11" barrel 19 FPE HPA modded
Crosman 2400KT 18" barrel 23 FPE HPA modded
Crosman 2240 14.5" barrel 21 FPE HPA modded
Crosman 2240 CO2 valve mods

Offline JamesRA

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Re: 2240 with hipac leaking
« Reply #17 on: November 18, 2013, 12:15:06 AM »
Thanks, but I've lost interest in hipac.  PITA IMO.  If a cart works fine, why the special attention to the hipac rigg  Over and out.
  • Elkton, MD
Beeman R1 .22
RWS Diana 54 T01 Air King .22
Beeman RX-2 / HW90 .20
Many S&W Springfield 78G & 79G CO2 pistols
FWB 124 Sport .177
Browning Leverage under-lever .22
RWS Diana 38 .177
RWS Diana 48/52 .177 (CDT tuned)
Stock 2250B
Customized 2240 long-barrel

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