PDA

View Full Version : AK47 Bolt Face Failure (PIC)


Acetone
05-16-2010, 4:54 PM
http://i143.photobucket.com/albums/r140/acetone_jack/Picture990.jpg

I noticed a large chunk of hardened steel missing from the side of my bolt face.

I was wondering if you guys could reccomend an aftermarket replacement bolt face.

Also, JB coldweld claims to hold its mechanical properties to about 600*F, anyone ever tried fixing a cracked bolt that way?

gn3hz3ku1*
05-16-2010, 4:59 PM
i dont think you would want to jb weld the bolt.. just in case right?

Acetone
05-16-2010, 5:06 PM
The other option (other than buying a new part) would be TIG welding the hole and milling it flat. Would this screw the heat treatment all up? are AK bolts even heat treated at all?

gn3hz3ku1*
05-16-2010, 5:21 PM
this would be a case of msging Mach69 aka calguns AK guy

Cobrafreak
05-16-2010, 5:42 PM
None of the above. Get a new bolt. If the metal is too soft it will wear fast and fail. If it is too hard (which it will become from welding) it will shear and fail. A bolt through the face , brain, and head is not worth it. New bolt:shock:

Solidsnake87
05-16-2010, 5:52 PM
Get a new bolt. They are cheap. You will need also need a live round and a "No-Go" gage to check headspace. Hopefully the new bolt will headspace properly.

AKs are designed to be throw away rifles. If it breaks, you'd basically get a new AK. There is a lot of variability in AKs so hopefully a new bolt will head space correctly. If it does not, you can do one of two things.

1.) Send it to a smith for proper headspacing of the new barrel. This will require redrilling a larger pin hole and using a larger barrel pin.

2.) Buying a new barrel to properly headspace.

Both options will most-likely cost more than a new AK--unless you can do it yourself. Start by getting a new bolt and hope for the best. If one of the two solutions I pointed out is necessary, buy a new barrel and bolt and wait for the next AK build party to come about. They might be able to help you assemble the new parts cheaply :) Hope that helps. Good luck!

Noobert
05-16-2010, 5:52 PM
+1 for new bolt. Make sure you headspace the new one though

zhyla
05-16-2010, 7:02 PM
You don't ever, EVER try to glue a gun back together.

ddcorral2622
05-16-2010, 7:02 PM
+1 for new bolt. Make sure you headspace the new one though

+1 new bolt, and headspace

thedrickel
05-16-2010, 7:25 PM
I don't know much about AK's . . . where exactly is the metal missing from?

Acetone
05-16-2010, 7:28 PM
Thanks for the replies.

I've checked a bunch of diffirent part suppliers for AK's / Wasr10's and I can not find a bolt face assembly by itself.

http://www.floridagunworks.com/Merchant2/merchant.mv?Screen=PROD&Store_Code=FG&Product_Code=ROM002&Category_Code=AKA+AK+MISC

Can anyone reccomend a company that will ship to CA?

Solidsnake87
05-16-2010, 8:06 PM
https://www.k-var.com/shop/home.php?cat=279

Make sure you get the right model.

nicoroshi
05-16-2010, 8:18 PM
New bolt, and head space for SURE!
Never mind the 600 degrees of the JBWeld. Think about the 40,000-50,000 lb/in2 pressure of a round going off.

>>>>Perhaps this<<<< (https://www.apexgunparts.com/product_info.php/cPath/21_89/products_id/1300)

FYI: 3 layers of scotch tape = .005" which is within .001" of the difference between a GO, and NO-GO gauge for 7.62x39.
Be sure to remove the extractor, and firing pin as well as clean the chamber, and bolt face before checking.
Like this>>>Caveman headspace check (http://firingsquad.us/albums/Nico-Personal/Caveman_headspace_check.mov)

Dangerpin
05-16-2010, 8:27 PM
Like this>>>Caveman headspace check (http://firingsquad.us/albums/Nico-Personal/Caveman_headspace_check.mov)

Insanely useful video, thank you!

bigthaiboy
05-16-2010, 10:05 PM
If the bolt you need is for a 7.62 Romanian AK, this guy is the cheapest for bolts: http://www.gunbroker.com/Auction/ViewItem.aspx?Item=169213639

God Bless The Mauser
05-16-2010, 10:06 PM
I don't see anything wrong with it. There should be some missing for the extractor groove.

Pryde
05-16-2010, 11:26 PM
I don't see anything wrong with it. There should be some missing for the extractor groove.

He's talking about the big chip behind the locking lug, not the extractor groove. Its not fine. Replace the bolt.