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Old 07-09-2007, 05:06 PM   #1 (permalink)
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Need to fix this Armson semi

I recently acquired an Armson semi. Before I bought it the guy warned me about a leak somewhere in the gun. Well it seems like it was leaking all over whenever I gassed it up. I managed to fix everything except lots of gas is escaping out the barrel.

For those of you that have experience with these I have kind of narrowed down the problem to one section, it is the little red seal bit that seals the gas from the bolt when the venturie thingy passes inside it.

Does anyone know where I can get a manual for this or know how I can fix the problem?

It is in great condition, I am happy I got it. I now own an Armson semi and an Armson pump.


Thanks.
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Old 07-09-2007, 07:12 PM   #2 (permalink)
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Drake, I'm having a real hard time visualizing what you're talking about. It's been a couple years since I sold my Semi. Any chance of a quick pic of what you're having trouble with?
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Old 07-09-2007, 07:31 PM   #3 (permalink)
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Not right now. I am going to bed but I will get some pics up in the morning.

I can describe it better like this. You know the brass power tube part?, the kind of base of the whole mechanism, it has a red cup seal type thing in it, that part isn't sealing and the gas is escaping.
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Old 07-10-2007, 06:15 AM   #4 (permalink)
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Ok, I have located the problem. It is the cup seal in the brass piece, its gone. I am going to have to get a replacement. I have already been told where I can get one though, should be fine.

Apparently this gun doesn't run very well on co2 either.
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Old 07-10-2007, 09:47 AM   #5 (permalink)
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not true. I can run mine on regular co2 and even syphon co2 with no problems and no leaks. its like the VM of blowfoward guns.
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Old 07-10-2007, 10:55 AM   #6 (permalink)
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Oh, I meant to say something else, sorry. The guy I spoke too was familiar with Armson back when it was still operating here in South Africa. He said the seals will last a lot longer with Air.

He told me where I can get parts for it and I am going to order some new seals for it soon.

Here are some pics of what I have been talking about. The brass piece has the little red seal at the back of it where it screws into the body.

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Old 07-10-2007, 11:04 AM   #7 (permalink)
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Wow! I'm glad you have a source for parts. That looks like a bear to try and find anything non-stock to replace it with.
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Old 07-10-2007, 12:25 PM   #8 (permalink)
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They said you could use two thick o-rings to replace it or an o-ring and two washers but that would only be temporary.

The seals are like $1.50 each

Armson was originally based here so it wasn't too hard to track down parts
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Old 08-08-2007, 03:54 PM   #9 (permalink)
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Ok, Sorry to dig up an old thread but I got new seals for my marker and it works beautifully. I am surprised at how quiet it is and at how much kick it has, I am to use to my pump gun

Anyway, there is only one place in South Africa that stocks spare parts and that is Action Pursuit limited. ( Action Pursuit Group ) I am sure they ship overseas if anyone needs spare parts. Just thought I would share.
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Old 08-08-2007, 04:55 PM   #10 (permalink)
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Good info to know Drake! I'm sure a few of us have Semi's that could use some seals etc.

Thanks for sharing the source!
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