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 Post subject: Alecto valve repair
PostPosted: Mon Apr 11, 2016 4:44 pm 
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Joined: Tue Oct 02, 2012 8:43 am
Posts: 197
Last year, I adjusted the bleed plug on my Alecto valve. I have .177, .22, and .25 barrels, so I wanted to be able to dial the speed back up with the bigger calibres. But shortly after the adjustment, it started losing air quickly after pumping. It would fire immediately, but if left "charged" it quickly lost power. When winter came, I sort of abandoned it.

I recently started doing a bit of reading on CAF about the issue. I just took it out to diagnose the issue and it looks like the common crack in the valve housing where it has been shaved down. You can even hear air quietly hissing out when it is pumped up.

I have ready a bit about Walter's solution (I think he made a more recessed seal), but I am hoping folks can give me a bit more info. Ideally, I would like to get a replacement seal (if they are still available), but I sent a PM on here and don't know where else I can get a solution to this issue. Basically just wondering if anyone can help me solve this issue, or even point me towards a thread where the solution is discussed in more detail.

Thanks


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 Post subject: Re: Alecto valve repair
PostPosted: Mon Apr 11, 2016 8:33 pm 
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Joined: Sun Nov 06, 2011 2:16 pm
Posts: 1638
Location: 1/2 Way From Ottawa and Montreal,
The trick is to relocate your O-ring inside your valve at the other end where you smaller inner valve meets the valve body.
and voila it's fixed. it's what I had to do. and it works great even gained a few FPS.

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 Post subject: Re: Alecto valve repair
PostPosted: Mon Apr 11, 2016 8:54 pm 
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Joined: Tue Oct 02, 2012 8:43 am
Posts: 197
Thanks. Do you know of any threads that show it being done (or that show that level of disassembly)? I am a bit worried about screwing it up.


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 Post subject: Re: Alecto valve repair
PostPosted: Mon Apr 11, 2016 8:57 pm 
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Joined: Sun Nov 06, 2011 2:16 pm
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Location: 1/2 Way From Ottawa and Montreal,
NOPE All I know is in my head, so hard to make pic's but you only need one more steep then adjusting, the power valve.
and it's taking out the main valve. the rest of the steeps are the same.
make your self a tool to take out and install the valve body it will help you.
and maybe getting a small crescent wrench would help you.

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 Post subject: Re: Alecto valve repair
PostPosted: Mon Apr 11, 2016 9:53 pm 
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Joined: Fri Aug 06, 2010 3:58 pm
Posts: 45
Location: Jefferson, Oregon
FRANK wrote:
The trick is to relocate your O-ring inside your valve at the other end where you smaller inner valve meets the valve body.
and voila it's fixed. it's what I had to do. and it works great even gained a few FPS.


Did you have to cut a new groove for the o-ring or just move it? Regards, Tom

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 Post subject: Re: Alecto valve repair
PostPosted: Tue Apr 12, 2016 1:35 pm 
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Joined: Sun Nov 06, 2011 2:16 pm
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Location: 1/2 Way From Ottawa and Montreal,
no just drop a new right size o-ring in there.

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 Post subject: Re: Alecto valve repair
PostPosted: Wed Apr 13, 2016 11:25 am 
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Joined: Tue Oct 02, 2012 8:43 am
Posts: 197
Do you know what size o-ring is required? I will probably try to pull the Alecto apart in the next few days, but I would prefer to not leave it disassembled while going to the hardware store to size up an o-ring (small, curious kids and all that). If I could have the proper sized ring on hand it would make things go more quickly.

Also, is any kind of special (high pressure?) ring material required, or just a standard o-ring?

Thanks


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 Post subject: Re: Alecto valve repair
PostPosted: Wed Apr 13, 2016 11:42 am 
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Joined: Sun Nov 06, 2011 2:16 pm
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Location: 1/2 Way From Ottawa and Montreal,
I don't know the size I have a big box with over 60 different o-ring and a 2nd one with 20 different I found one that fit perfect.
this mod saves your Alecto from a paper weight to a operation air pistol :)

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 Post subject: Re: Alecto valve repair
PostPosted: Wed Apr 13, 2016 11:45 am 
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Joined: Tue Oct 02, 2012 8:43 am
Posts: 197
That is what i am hoping. It still works if I fire it immediately, but it deserves better than that. I may have to leave it disassembled on my bench downstairs and make a quick trip to the store when the kids are in bed. That would also give me a chance to try and put a bit of epoxy in the crack on the inside as well for a bit of reinforcement.


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 Post subject: Re: Alecto valve repair
PostPosted: Wed Apr 13, 2016 12:02 pm 
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Joined: Sun Nov 06, 2011 2:16 pm
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Location: 1/2 Way From Ottawa and Montreal,
Epoxy will not hold. if you go to a car parts store like Napa or Benson auto. they have the big o-ring kit's from 12$ to 25$ grab a kit it's worth having on hand.

if you have a princess auto they have real nice o-ring kit's

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 Post subject: Re: Alecto valve repair
PostPosted: Wed Apr 13, 2016 12:42 pm 
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Joined: Tue Oct 02, 2012 8:43 am
Posts: 197
FRANK wrote:
Epoxy will not hold. if you go to a car parts store like Napa or Benson auto. they have the big o-ring kit's from 12$ to 25$ grab a kit it's worth having on hand.

if you have a princess auto they have real nice o-ring kit's


The idea of the epoxy is just to fill in the crack a bit in case there is a bit of pressure there at some point. My understanding is that moving the o-ring changes the seal point so that there is no longer any pressure where the casting mark was, but i figure it wouldn't hurt to get something in the crack anyway. I have also heard others talk about JB weld, but I have no experience with that stuff (but I do have some quick set epoxy in the basement). Is it just a waste of time to do anything with the crack? (or should I look into jb weld?)

As for Princess Auto, it is opening here any day now.


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 Post subject: Re: Alecto valve repair
PostPosted: Wed Apr 13, 2016 2:28 pm 
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Joined: Sun Nov 06, 2011 2:16 pm
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Location: 1/2 Way From Ottawa and Montreal,
waste of time to put epoxy but do to your hearts content and epoxy away.
it will not hurt it. but don't put too much it's a close/tight fit in there.

I did not touch mine I just relocated the o-ring and that was it.

I have a .177 barrel and a 12" .25 barrel for my Alecto and Yes adjusting for good fps with .25 is what crack my valve.
but I expected it. and got it. but a alecto in .25 packs a punch and no need for CO2 Ya Baby.

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 Post subject: Re: Alecto valve repair
PostPosted: Sat Jul 02, 2016 6:10 pm 
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Joined: Sat Jun 18, 2016 1:06 pm
Posts: 175
Location: Yukon
where did you get the 25 barrel from?


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 Post subject: Re: Alecto valve repair
PostPosted: Sat Jul 02, 2016 6:25 pm 
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Joined: Sun Nov 06, 2011 2:16 pm
Posts: 1638
Location: 1/2 Way From Ottawa and Montreal,
I bought it off a member here he custom made a few and sold them. was not cheap but lot's of fun.

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