Blue streak valve removal question



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Offline jlp920

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Blue streak valve removal question
« on: July 25, 2017, 08:01:44 AM »
 Hey again folks,
 I am doing an overhaul of my old '77 blue streak, and I made my own valve tool to get out the retaining nut. Will I be able to push the rest of the valve out from the other end using a wooden dowel?
I wasn't sure whether there was a fixed piece in the tube preventing this.
-Jesse
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2001 Crosman 760
'77 Blue Streak
Crosman Vantage NP .22, open sights (rc bearing trigger fix)
Crosman p1377, stock
Beeman p17 (2)
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Offline avator

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Re: Blue streak valve removal question
« Reply #1 on: July 25, 2017, 08:06:12 AM »
If I'm not mistaken that valve is soldered in.
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Offline Back_Roads

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Re: Blue streak valve removal question
« Reply #2 on: July 25, 2017, 08:30:02 AM »
Best to leave the valve in , and reassemble with new parts. If their a lead seal on the open end then it is a soldered valve.
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Offline jlp920

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Re: Blue streak valve removal question
« Reply #3 on: July 25, 2017, 08:32:36 AM »
Ah! So that's what soldered valve means, I had been wondering. Yes, I think you're right.
I understand that the valve tool has a female threaded end for final removal of valve guts, 275" x 27 tpi, I read.
Any suggestions on improvising one, or others means for removal of internals? Want to avoid buying the tool if I can help it (as I said, I made a tool to remove the nut).
  • USA, Vermont, Westminster
2001 Crosman 760
'77 Blue Streak
Crosman Vantage NP .22, open sights (rc bearing trigger fix)
Crosman p1377, stock
Beeman p17 (2)
Gamo Viper .177 (Gamo scope and RC bearing trigger fix)

Offline avator

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Re: Blue streak valve removal question
« Reply #4 on: July 25, 2017, 08:42:39 AM »
If you could make it out of a threaded rod it would be an improvement over the "store bought" tool. That way you could add a washer and wingnut to twist and pull the "guts" out of the valve. Just a tip.... there should be 2 lead seals... one on top and one under the valve "guts". The one under the "guts" is hard to see. I'm not sure when the stopped using lead. Your gun may be different and may even have been resealed before. Make sure you get them both out. Reuse them if possible as opposed to the neoprene replacements.
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Offline crittahitta

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Re: Blue streak valve removal question
« Reply #5 on: July 25, 2017, 09:11:57 AM »
jlp920... can you please take pics of your homemade tool and a few of the resealing procedure? I also have an old blue streak from when i was a kid and want to reseal it. If you can it would be appreciated big time.
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Offline jlp920

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Re: Blue streak valve removal question
« Reply #6 on: July 25, 2017, 09:15:00 AM »
Glad to, I will document as I go and post on this thread when finished. This the video of the tool I'm making:

Any suggestions on making/acquiring a threaded rod of the right pitch and diameter? I have machine shops and good hardware stores locally.
« Last Edit: July 25, 2017, 09:24:21 AM by jlp920 »
  • USA, Vermont, Westminster
2001 Crosman 760
'77 Blue Streak
Crosman Vantage NP .22, open sights (rc bearing trigger fix)
Crosman p1377, stock
Beeman p17 (2)
Gamo Viper .177 (Gamo scope and RC bearing trigger fix)

Offline Hoosier Daddy

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Re: Blue streak valve removal question
« Reply #7 on: July 25, 2017, 09:38:37 AM »
Others have reported the tap needed is a hard to find size, and rather expensive when you do find it. (McMaster Carr) You may find the designated tool cheaper in the long run.  ;)
Even though I already had a nice seal kit from Rick @ Precision Pellet... I went ahead and bought a second seal kit in order to get the tool from PA.
http://www.pyramydair.com/s/a/Benjamin_Sheridan_Repair_Kit_Fits_Some_Pre_1995_Multi_Pump_Guns_w_Soldered_Valve/624
« Last Edit: July 25, 2017, 09:42:45 AM by Hoosier Daddy »
Pistols
Crosman: PC77, 2300KT, 1740

Rifles
Beeman: RS2 Silver Kodiak, (SAG) AR2078-B
Benjamin: 312 (pre '57), 342 ('72), 392P ('93), 392PA ('15), Maximus
Crosman: Genesis NP .22, Quest 1000X, Raven (Grand-kids), 3rd gen 160
Gamo: Recon (Grandkids X2)
Sheridan: C Blue Streak ('85), C9 Blue Streak ('92) and a Co2 Model F (90)
Feinwerkbau: FWB 300S ('80)
Xisico: XS60C .22

Offline jlp920

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Re: Blue streak valve removal question
« Reply #8 on: July 25, 2017, 10:16:47 AM »
Just found a hand tap available, 9/32 32. Can anyone confirm that's the right one?
  • USA, Vermont, Westminster
2001 Crosman 760
'77 Blue Streak
Crosman Vantage NP .22, open sights (rc bearing trigger fix)
Crosman p1377, stock
Beeman p17 (2)
Gamo Viper .177 (Gamo scope and RC bearing trigger fix)

Offline oldair

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Re: Blue streak valve removal question
« Reply #9 on: July 25, 2017, 01:39:26 PM »
9/32 - 32 is the correct female thread to pull out the exhaust valve. 

Offline jlp920

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« Last Edit: July 25, 2017, 03:13:01 PM by jlp920 »
  • USA, Vermont, Westminster
2001 Crosman 760
'77 Blue Streak
Crosman Vantage NP .22, open sights (rc bearing trigger fix)
Crosman p1377, stock
Beeman p17 (2)
Gamo Viper .177 (Gamo scope and RC bearing trigger fix)

Offline Hoosier Daddy

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Re: Blue streak valve removal question
« Reply #11 on: July 25, 2017, 03:15:57 PM »
Holey COW!
That is a great price for a tap you may only use once, especially a Plug Tap.
The one I found on McMaster was $46...  ::)
Pistols
Crosman: PC77, 2300KT, 1740

Rifles
Beeman: RS2 Silver Kodiak, (SAG) AR2078-B
Benjamin: 312 (pre '57), 342 ('72), 392P ('93), 392PA ('15), Maximus
Crosman: Genesis NP .22, Quest 1000X, Raven (Grand-kids), 3rd gen 160
Gamo: Recon (Grandkids X2)
Sheridan: C Blue Streak ('85), C9 Blue Streak ('92) and a Co2 Model F (90)
Feinwerkbau: FWB 300S ('80)
Xisico: XS60C .22

Offline jlp920

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Re: Blue streak valve removal question
« Reply #12 on: July 26, 2017, 01:48:15 AM »
Made the tool for the retaining nut tonight-that sucker's in there! Kroiled it up, give another shot tomorrow. Tap's on the way. It'll be nice to get this thing holding a charge.
  • USA, Vermont, Westminster
2001 Crosman 760
'77 Blue Streak
Crosman Vantage NP .22, open sights (rc bearing trigger fix)
Crosman p1377, stock
Beeman p17 (2)
Gamo Viper .177 (Gamo scope and RC bearing trigger fix)

Offline bantam5s

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Re: Blue streak valve removal question
« Reply #13 on: July 26, 2017, 02:47:01 AM »
My 1979 blue streak has a soldered in valve, and it had lead seals in it so I gave no doubt that your 1977 blue steak will be the same.
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Offline fivestar45

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Re: Blue streak valve removal question
« Reply #14 on: July 28, 2017, 12:10:06 PM »
Made the tool for the retaining nut tonight-that sucker's in there! Kroiled it up, give another shot tomorrow. Tap's on the way. It'll be nice to get this thing holding a charge.

Be real careful, I had an E series pistol with the same super tight valve top. The square hole in the top was starting to distort so I gave another squirt of Kroil, warmed up the tube with a hair drier, and used a 1/4" impact tool on a low setting. It finally broke loose then I proceeded to continue backing it out by hand with just the cross bar in the tool. I had to work it less than 90deg's at a time out and in until it was out. In the end it managed to pull some threads (work welded?) and needed to have the remaining threads re-chased. The bad part of that is it uses a super weird dia. and pitch. I mailed it to Alan Schweitzer (AB Airgun) he had a tap made a while back with a centering collar and did a nice job of fixing the threads.

Offline jlp920

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Re: Blue streak valve removal question
« Reply #15 on: July 28, 2017, 04:35:36 PM »
Thanks for the heads-up, it came out pretty easy.
  • USA, Vermont, Westminster
2001 Crosman 760
'77 Blue Streak
Crosman Vantage NP .22, open sights (rc bearing trigger fix)
Crosman p1377, stock
Beeman p17 (2)
Gamo Viper .177 (Gamo scope and RC bearing trigger fix)

Offline Hoosier Daddy

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Re: Blue streak valve removal question
« Reply #16 on: July 28, 2017, 04:52:49 PM »
For the lower lead seal, I was told by more than one expert it will usually stay in the gun. Tap the surface with a dental pick or piano wire. If the sealing surface sounds a dead "thud" the seal is in place. Leave it there and reuse it. You will destroy it trying to remove it.
They were right...
so far 3 in a row with no issues reusing that lower lead seal.
« Last Edit: July 28, 2017, 04:59:31 PM by Hoosier Daddy »
Pistols
Crosman: PC77, 2300KT, 1740

Rifles
Beeman: RS2 Silver Kodiak, (SAG) AR2078-B
Benjamin: 312 (pre '57), 342 ('72), 392P ('93), 392PA ('15), Maximus
Crosman: Genesis NP .22, Quest 1000X, Raven (Grand-kids), 3rd gen 160
Gamo: Recon (Grandkids X2)
Sheridan: C Blue Streak ('85), C9 Blue Streak ('92) and a Co2 Model F (90)
Feinwerkbau: FWB 300S ('80)
Xisico: XS60C .22

Offline jlp920

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Re: Blue streak valve removal question
« Reply #17 on: July 28, 2017, 07:53:56 PM »
 Thanks for that.
  • USA, Vermont, Westminster
2001 Crosman 760
'77 Blue Streak
Crosman Vantage NP .22, open sights (rc bearing trigger fix)
Crosman p1377, stock
Beeman p17 (2)
Gamo Viper .177 (Gamo scope and RC bearing trigger fix)

Offline jlp920

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Re: Blue streak valve removal question
« Reply #18 on: July 30, 2017, 10:18:39 PM »
Alright guys–I'm well into the teardown and I have a few questions. I'm using the Mac1 kit,, and so far I am reusing the lead washers,I don't need the neoprene washers. Also, I am going to need to enlarge the spring ID in order for the new exhaust valve to fit in it. Is that normal? (see first pic)

I strongly suspect the air leak was happening at the check valve. I smacked it with the edge of the tube accidentally–is that crease I put in it going to cause me problems? (see pic) I thought about replacing the weak check valve spring with a rather stiff one from a crosman 760 valve, but thought better of it. (see pic)

Also, take a lot at the interior shot of the empty valve housing. Look OK? I got in there with rags, but I can do more if need be.

Finally, getting the retaining nut back in seems a bit of a trick. I was careful not to cross-thread, but it still gets pretty hard about halfway through tightening it.

Finally, I've included pics of the two tools I made for the job.
« Last Edit: July 31, 2017, 04:48:15 PM by jlp920 »
  • USA, Vermont, Westminster
2001 Crosman 760
'77 Blue Streak
Crosman Vantage NP .22, open sights (rc bearing trigger fix)
Crosman p1377, stock
Beeman p17 (2)
Gamo Viper .177 (Gamo scope and RC bearing trigger fix)

Offline Rob112o

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Re: Blue streak valve removal question
« Reply #19 on: July 31, 2017, 03:39:26 AM »
You don't need a stronger spring for the valve spring. Going lighter will only benefit you. You may have to cock rifle before pumping, but that will only insure the rifle will dump a full 8 when you need full power.
« Last Edit: August 04, 2017, 04:30:08 PM by Rob112o »
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