Baikal izh-46m problem after replacing piston seal

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gimgim
Posts: 241
Joined: Sat Aug 02, 2008 2:13 pm
Location: Bay Area, CA

Baikal izh-46m problem after replacing piston seal

Post by gimgim »

After 10 years or so, I decided to replace the piston seal with the spare one I've got with the pistol.
When bringing the lever back (bolt assembly up at 90 degrees) I don't feel any resistance and if I try to shoot, I can only hear a click. If I try to bring the lever forward after bringing it back, I can feel some vacuum.
Any idea? I have ordered new seals from Ebay, but it will take weeks to get them from Russia.
Thanks
Gwhite
Posts: 3423
Joined: Sat Sep 04, 2004 6:04 pm
Location: Massachusetts

Re: Baikal izh-46m problem after replacing piston seal

Post by Gwhite »

Something is leaking. Can you hear any hissing when you bring the lever back? If so, from where? I assume you oiled the new seal.

The only two places that make sense are either the piston seal, or the firing valve. If the firing valve was leaking, I suspect you would hear it fairly clearly. The piston seal may be old enough that it's gotten deformed or just fossilized in storage.
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gimgim
Posts: 241
Joined: Sat Aug 02, 2008 2:13 pm
Location: Bay Area, CA

Re: Baikal izh-46m problem after replacing piston seal

Post by gimgim »

Thanks. It was the piston seal; once I reinstalled the old leaky one the problem went away.
The pistol is still shooting very low, and it's basically unusable, but I can see it has compression.
What was very puzzling to me was that the 10 y/o spare seal has even slightly larger diameter yet zero compression when pushing it in (some resistance when it's being pulled out).
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