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Tippmann 68 carbine issues
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Reb Cpl View Drop Down
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Has to say "yes" to "are you a cop?"

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    Posted: 10 January 2008 at 1:03pm

this one should throw some of you younger boys off, but I'm hoping a handful of older guys will be familiar with the marker enough to help.

I've got a 68 carbine thats stock. Recently, when I put air through it, I have no leaks or anything, but when I pull the trigger, I can get maybe two or three shots, then the bolt will not return to re-cock, and I'll get the multi-shot, rapid burst that is similar to when you run out of air, I have to manually stop the bolt as it cycles back and forth.

Yes, my tank is full.

Suggestions?

And don't make me sticky this until I get an answer.

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GI JOES SON View Drop Down
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i'm not too familiar with the marker so this might just be a pointless random guess. is it possible that the sear is worn down and thats why its not catching?
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kurieitaa View Drop Down
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Points: 1444 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kurieitaa Quote  Post ReplyReply Direct Link To This Post Posted: 10 January 2008 at 2:09pm
Same here i dont have a 68 carbine but....sounds like any other tippmann problem, try checking the sear spring, it might be too weak? if not maybe the sear is worn like "gi joes son" suggested.

Edited by kurieitaa - 10 January 2008 at 2:13pm

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tallen702 View Drop Down
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  1. Are you dry firing? If so, put some rounds in it and see if it still occurs
  2. Is the velocity screw missing or backed out? Try screwing it in a litte
  3. Check the Sear and hammer for wear


Sounds like a loss of back-pressure issue which tends to plague Pro-series markers as they get older. They often won't fire properly unless there is paint in them.
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Reb Cpl View Drop Down
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I never thought it would make a difference if there was paint in it or not.

I'll try that this afternoon.

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Mack View Drop Down
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In addition to what tallen said, check the hammer o-ring. 

Also check to make sure the plastic sight that snaps into the sight rails on top of the marker still fits snugly and has not developed a "wear groove" in the base.  This piece holds the linkage arm in place and binding can result if it is not snug.  (Please keep in mind that I'm trying to do this by memory; it's been a long time since I had a 68 carbine so if I've got old Tippmann's confused, I apologize.)
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Yep, Mack covered the other culprits I've forgotten about. It's been a loooong time since I've worked on a Pro-Series CVX system.
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Reb Cpl View Drop Down
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Originally posted by tallen702 tallen702 wrote:

Yep, Mack covered the other culprits I've forgotten about. It's been a loooong time since I've worked on a Pro-Series CVX system.

Work on em eh? So if I can't get it functioning due to ineptitude I can send it out to you right?

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Yep. I can get any parts I need pretty quickly from ShortyBP. You handle shipping and cost of any new parts and I'll fix it.

Edited by tallen702 - 11 January 2008 at 4:24pm
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A G F Y

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Of course, while you're ordering replacement parts, you'll want to add in a new Air Tipps CAR stock, and Air Tipps Carry Handle, so you can make this your very own AR-replica 68 Carbine, right?

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Originally posted by ShortyBP ShortyBP wrote:

Of course, while you're ordering replacement parts, you'll want to add in a new Air Tipps CAR stock, and Air Tipps Carry Handle, so you can make this your very own AR-replica 68 Carbine, right?



NO SELLING ON THE FORUM!!!!

I keed! I keed!

But shorty does have the hook up on the last of the Air-Tipps goods.
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Schwat did air-tipps make? When did they go under (I'm assuming thats what they did)?
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Has to say "yes" to "are you a cop?"

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Originally posted by tallen702 tallen702 wrote:

Yep. I can get any parts I need pretty quickly from ShortyBP. You handle shipping and cost of any new parts and I'll fix it.

You may be hearing from me in the near future.

And Shorty.....I just might.

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You forgot an obscure part that causes problems, the linkage arm.

If the little bugger is bent even the slightest bit, it can cause enough friction to screw up the recock.

Set it on a nice flat surface and eye it for bends. Check the slot it rides in for crud or obstructions.
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Originally posted by Reb Cpl Reb Cpl wrote:

Originally posted by tallen702 tallen702 wrote:

Yep. I can get any parts I need pretty quickly from ShortyBP. You handle shipping and cost of any new parts and I'll fix it.


You may be hearing from me in the near future.


And Shorty.....I just might.



Sure thing! It's going to be a month before I get the TF-5 torn down and re-built, so I might as well do something with my free time.
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May have got gummed up oil if it has not been used for a while.
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Did you ever get it working. I had that problem with my Pro Carbine. I replaced the CVX valve and no more problem.
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Try changing out the rubber bump stop and your spring. This should get things back in order!!
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if you are using co2 you need a ciphon hose in your tank but i use compressed air on mine
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^^^  Several things.
1.  The 68 Carbine did not require liquid CO2.
2.  This thread is ancient--bumping it was not necessary.  (The original question was posted more than two years ago.
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