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Old 02-22-2013, 07:39 PM   #1 (permalink)
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Montneel Z-1 - leak from valve

I just picked up a Z-1 in like new condition, only issue is the gun isn't holding air, I'm thinking it's the cupseal.

That's the issue, does anyone still make/have these?

I know a few members on here have some nice Montneel Z collections, but these are hard to share!
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Old 02-22-2013, 08:00 PM   #2 (permalink)
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Is the leak from between the front and rear receiver? or does it sound like its coming out the barrel?

If its in the middle, then its the oring around the valve. The barrel would be a cupseal leak. Often you an fix those by simply running a fair amount of lube through the system. The seals can dry up if unused for a long time.

You might check baccipaintball.com. He had a supply of montneel parts.
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Old 02-22-2013, 08:15 PM   #3 (permalink)
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*Had* lol.

It is leaking between the front and rear receiver, glad to hear it's just a valve o-ring.

Now, if only someone were to supply a size number for the o-rings...

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HP_Lovecraft - You need to get your site up again! I will contribute toward the yearly hosting if need be!
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That's interesting... it's got a cat for a recoil pad. Must shoulder kinda awkwardly.

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Last edited by B-17; 02-22-2013 at 08:39 PM.
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Old 02-23-2013, 03:14 PM   #4 (permalink)
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It is leaking between the front and rear receiver, glad to hear it's just a valve o-ring.
Sometimes the oring itself is not bad, but the velocity screw has become bent. That screw helps hold in the valve, and if its bent, it can slide out -just enough- so the oring leaks, or worse.

Its a flaw in the design. So, unbending the screw might help. Or maybe just a new oring. Its a non-moving part, so a generic one from the hardware store would work. Its worse on MegaZ guns because the forward receiver is much looser.

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HP_Lovecraft - You need to get your site up again! I will contribute toward the yearly hosting if need be!
I used to run a bunch of servers for various things.... now we all use laptops/tablets/etc in the house. Nothing sutable for web hosting. Its all archived away if anyone wanted to host it... but its not a priority.
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Old 02-23-2013, 04:19 PM   #5 (permalink)
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I noticed on my Mega-Z when I had it (Agglet has it now), the front receiver would sometimes slide out and spray liquid co2 all over your hands, but that wasn't too big of an issue lol.

I tried replacing the o-rings (the size was 013, I think). The valve sealed, but not completely, so it still may be an o-ring issue.

I did notice the front receiver was sliding out when I cycled the gun, so I will try unbending that screw. These guns are weird to work with due to the split of the front/rear receivers.

Thanks for the advice!
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That's interesting... it's got a cat for a recoil pad. Must shoulder kinda awkwardly.

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Old 02-24-2013, 01:41 AM   #6 (permalink)
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Its all archived away if anyone wanted to host it...
-I'll put it up on my site of you'd like. I have lots of room and bandwidth.

Doc.
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Old 04-05-2013, 04:48 PM   #7 (permalink)
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I found out what it was!

Remember that one screw that is very small and not to be messed with, but the curious type always go for anyway? In between the receivers?

Yeah...

I may or may not have rounded out that hex screw.
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