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 Post subject: 'Diana 52
PostPosted: Mon Jul 19, 2021 4:04 am 
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Joined: Thu May 03, 2012 9:52 am
Posts: 18
Looking for help please.
Just picked up a second hand Diana model 52 in .177. But I have a problem.
The side lever is free and the bear trap works but there is no catch at the end of cocking to keep the spring compressed.
I have to take the pressure off the cocking arm and release the bear trap to return the lever to it’s normal position but the spring also uncoils so the gun is not cocked. The safety is not reset durning this procedure if that is any help.
I haven’t taken the gun apart yet save removing the stock but everything looks ok the spring appears intact from what I can see with no rattling.
Just looking for help with what to look for before further taking apart; you tube videos are not the best for the Diana 52.
Thanks


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 Post subject: Re: 'Diana 52
PostPosted: Mon Jul 19, 2021 8:19 am 
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Joined: Sat Sep 03, 2005 9:25 am
Posts: 3837
Location: Ontario, Canada
My first guess it that you have a broken mainspring. A short piece of spring may have broke off and coiled together with the longer section so it won't fully compress. This can make it impossible to get the piston back far enough to engage the trigger. My second guess is a trigger problem but you can't be certain until you open it up.


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 Post subject: Re: 'Diana 52
PostPosted: Mon Jul 19, 2021 9:31 am 
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Joined: Fri Jan 22, 2010 1:17 pm
Posts: 2817
Location: Kingston, ON
TCooper is correct, he jumped to the likely cause.
Also, the 52 has the same action as the 48, just has a fancy stock, and there is a lot of youtube on the tear down and assembly of the 48 to help you on your way.
Good luck, I'm glad to see the Dianas making an encore performance.

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 Post subject: Re: 'Diana 52
PostPosted: Tue Jul 20, 2021 7:05 am 
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Joined: Thu May 03, 2012 9:52 am
Posts: 18
Thank you for the help

It was a broken spring ( coiled into itself ) and a broken spring guide.

Now the question is where can I source these parts ( in Canada if possible) ? It is a 1987 Diana 48/52 with a T01 trigger group if that makes a difference

Thanks again
Bernie


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 Post subject: Re: 'Diana 52
PostPosted: Tue Jul 20, 2021 9:24 am 
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Joined: Sat Sep 03, 2005 9:25 am
Posts: 3837
Location: Ontario, Canada
In Canada
https://www.airgunsource.ca/us/vortek-p ... 2-460.html

Call this guy http://www.randrairgunrepair.com/

Call this guy https://scopesandammo.com/storefront/pr ... lick-p-847


From USA
http://vortekproducts.com/ourstore/PG3- ... uct_id=386

http://vortekproducts.com/ourstore/PG3- ... uct_id=387

https://www.pyramydair.com/product/vort ... les?a=9150

https://www.airrifleheadquarters.com/ca ... 962763.htm

https://www.pyramydair.com/product/main ... -56?a=8265
https://www.pyramydair.com/product/rws- ... 6th?a=8332


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 Post subject: Re: 'Diana 52
PostPosted: Tue Jul 20, 2021 11:16 am 
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Joined: Thu Oct 13, 2005 6:52 pm
Posts: 7865
Location: Vancouver Island BC
I have never tried a Vortex spring so can't comment .The factory spring is well know for breaking .In TCooper post there a link to Air Rifle Headquarters this is the spring i would use this guy been making spring a long time .........

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 Post subject: Re: 'Diana 52
PostPosted: Wed Jul 21, 2021 4:54 am 
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Joined: Mon May 26, 2014 1:08 am
Posts: 685
Location: Thunder Bay
I have a Vortek "Docile" spring in my Ruger Blackhawk Elite. The gun shoots 750-800 fps. No issues with the spring. At the time, I could not source a replacement spring in Canada, so I ordered the Vortek. Wound up costing double compared to a factory spring with exchange, shipping, etc. The gun shoots very well at the velocity generated by the Vortek spring. ( much better than the stock spring), but I think it's due to the lower velocity and smoother shot cycle rather than some magical quality of the spring.

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 Post subject: Re: 'Diana 52
PostPosted: Wed Jul 28, 2021 5:32 am 
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Joined: Sun Jul 01, 2018 10:37 pm
Posts: 471
Location: Guelph, Ontario
Titan Springs available through eBay are of great quality. I have several for the TX200 platform.

https://www.ebay.ca/itm/Titan-XS-Airgun ... 635-2958-0

Tom

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 Post subject: Re: 'Diana 52
PostPosted: Wed Jul 28, 2021 7:50 am 
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Joined: Thu May 03, 2012 9:52 am
Posts: 18
Thanks everyone.
Sourced mainspring ( the easy part) and the spring guide ( more elusive) from D&L Airgun....now just waiting for it to arrive.
Bernie


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 Post subject: Re: 'Diana 52
PostPosted: Fri Aug 06, 2021 1:40 pm 
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Joined: Thu May 03, 2012 9:52 am
Posts: 18
Thanks again everyone for the help.
Received the spring and guide today and installed it (alot more tension than on a Air Arms Prosport) but got it done.

Shot some 150 shots today and while the iron sights are good these old eyes need a scope for fine shooting. Only tried two types today but certainly looks promising.
The trigger is not as nice (a little mushy) as my other springers but I will try adjusting that later.

One thing I did notice is that the front sight grub screw kept loosening up so I put thread locker on it and will leave it alone the remainder of the day.

Bernie.

Now to ponder my BSA Air Sporter. I hate giving up on something but don't want to ruin it either. I have someone willing to help but will let it stew for a little while but giving up and sending it off.


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 Post subject: Re: 'Diana 52
PostPosted: Tue Sep 07, 2021 3:55 pm 
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Joined: Thu May 03, 2012 9:52 am
Posts: 18
OK
I have the Diana 52 up and running with a new spring and guide.
Front site holding well with a little thread lock ( and larger indent in the barrel).
Shooting well with open sights 18 yard resettable target hits each shot, but that is as far as I can shoot with open sights.
Tried scope rings with pin in recess but scope moves back. Tried red dot ( light weight) but moves back.
I read about the RWS lock down single peice mount/rings but mixed reviews.
I read about Diana ZR recoilless mount with mixed reviews.
Anyone with experience of success with this ?

Also I hear this rifle is a scope killed even airgun scopes. Any experience with a relatively budget scope on this rifle?

I read last night that is not the scope just shooting too light pellets in this rifle. Any knowledge of this?

Thanks for the help.
Bernie


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 Post subject: Re: 'Diana 52
PostPosted: Tue Sep 07, 2021 4:33 pm 
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Joined: Thu May 07, 2015 8:30 pm
Posts: 1620
Location: Eastern Townships
bbuffett wrote:
OK
I have the Diana 52 up and running with a new spring and guide.
Front site holding well with a little thread lock ( and larger indent in the barrel).
Shooting well with open sights 18 yard resettable target hits each shot, but that is as far as I can shoot with open sights.
Tried scope rings with pin in recess but scope moves back. Tried red dot ( light weight) but moves back.
I read about the RWS lock down single peice mount/rings but mixed reviews.
I read about Diana ZR recoilless mount with mixed reviews.
Anyone with experience of success with this ?

Also I hear this rifle is a scope killed even airgun scopes. Any experience with a relatively budget scope on this rifle?

I read last night that is not the scope just shooting too light pellets in this rifle. Any knowledge of this?

Thanks for the help.
Bernie


Just a little knowledge here: I saw many times here and elsewhere that heavy pellets will help a lot to tame a magnum springer gun. It does create more back pressure and atenuate the recoil; this is valid for both .177 and .22 caliber. HTH.

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