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 Post subject: Diana20 T01
PostPosted: Sat May 26, 2007 1:34 am 
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It's nice to work on springer again, I haven't been doing springer for
at least over a year now and of course only my favourite Diana.
This D20 has been left alone for quite sometime now and finally I
got the time to work on it.

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 Post subject:
PostPosted: Sat May 26, 2007 1:35 am 
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Like always any Diana is always a pleasure to work on and easy to
take apart.

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 Post subject:
PostPosted: Sat May 26, 2007 1:37 am 
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My good ol' spring compressor is back to work .....
put a little pressure from the back to release the spring tension
so the pin would come out nice and easy.

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 Post subject:
PostPosted: Sat May 26, 2007 1:40 am 
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Boy talk about so much lube & oil ....
This was certainly dieselling.


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 Post subject:
PostPosted: Sat May 26, 2007 1:41 am 
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Simple design of Diana20 T01 trigger but works very well ...

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 Post subject:
PostPosted: Sat May 26, 2007 1:47 am 
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The old seal must have gone over thousands of pellets .....
It's about time to rejuvenate.

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while I'm at it, might as well change the breech seal too ....

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 Post subject:
PostPosted: Sat May 26, 2007 12:58 pm 
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Did you do any before and after chrony tests???

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Im addicted to brake fluid..........but I can stop anytime....


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 Post subject:
PostPosted: Sat May 26, 2007 3:27 pm 
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Location: Ontario
sniper, I've got a Diana 25 which I recently took apart but havn't put back together.

The seal is pretty damaged and I'd like to replace it. As well, the breech seal needs replacing. Where can I find these pieces?

Would you be able to atleast post a description for proper oiling as I'm sure this gun has not seen oil or lube in many many years.

Thanks a lot for your time.

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Diana 25
Makarov MP-654K Black
2240
Crosman .357 6


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 Post subject:
PostPosted: Sat May 26, 2007 3:29 pm 
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Since you have taken apart the rifle, is the seal synthetic or leather for both the piston and breach?

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 Post subject:
PostPosted: Sat May 26, 2007 4:06 pm 
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@ Keyrigger, to be honest I can't deterime it for sure. But if I had to guess both seals look closer to a leather than they do a synthetic.

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Diana 25
Makarov MP-654K Black
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Crosman .357 6


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 Post subject:
PostPosted: Sat May 26, 2007 4:15 pm 
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Maybe it's synthetic leather?!... :lol:


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 Post subject:
PostPosted: Sat May 26, 2007 6:12 pm 
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notec wrote:
Did you do any before and after chrony tests???


Yes, I did, I'll post some result later ....


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 Post subject:
PostPosted: Sat May 26, 2007 6:28 pm 
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anthony wrote:
sniper, I've got a Diana 25 which I recently took apart but havn't put back together.

The seal is pretty damaged and I'd like to replace it. As well, the breech seal needs replacing. Where can I find these pieces?

Would you be able to atleast post a description for proper oiling as I'm sure this gun has not seen oil or lube in many many years.

Thanks a lot for your time.


Hi Anthony,

Diana 25 was one of my most favourite, that was my first rifle when
I was 11 years old.
If you're near T.O, you can get it , no problem but otherwise you can
get them for all Diana parts at D&L airgun.

There isn't much to lube a springer except for:
The spring use JM tar or sometime I use slick50.
or Tamiya moly lube is good too.
around the seal use Feinwerbau grease.
I also use the moly on the trigger assembly and sear.
Also all the moving joints.
That's it.


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 Post subject:
PostPosted: Sat May 26, 2007 6:36 pm 
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Before replacing the seal and greasing was chrony at 420 fps - 440 fps
with 7 gr. hobby.

After replacing the seal and lube.

Original spring.

445 fps - 460 fps with baracuda 10.65 gr.
516 fps - 528 fps with xisico 8.6 gr.
580 fps - 600 fps with hobby 7gr.

I wonder if the performance will increase after about a couple hundred
shots .....


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 Post subject:
PostPosted: Sat May 26, 2007 9:31 pm 
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Location: Southern Ontario
I have often used your pics and info as reference material when working on my goodies....
Thanks for posting that info sniper....

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