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Posted: 4/7/2018 10:28:15 PM EDT
I understand the thrust piece needs to be removed from the guide rod to access the spring.
Are the thrust pieces thread locked in place? It’s an Austrian factory bolt carrier. I don’t have a real vice, so my plan is to support the guide rods with planks and secure them in a Workmate - would that be enough support? Simple job, but wanted to ask before wrenching on it since replacements are so expensive. 
Thanks. |
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Posted: 4/7/2018 11:37:40 PM EDT
[#1]
I suggest sending it to PJ
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Posted: 4/8/2018 12:38:29 AM EDT
[#2]
They're all Austrian. Those springs are pretty heavy, if you don't have the proper setup I'd be wary...
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Posted: 4/8/2018 3:33:29 AM EDT
[#3]
This brings an interesting question to mind: what's the lifespan of of the AUG recoil springs? Mil spec AR recoil springs are supposed to last 3,000 rounds but I don't think I've ever heard a number for the AUG...
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Posted: 4/8/2018 7:40:34 PM EDT
[#4]
I don’t know the life span on them. Mine are on around 6K cycles and remain strong.
They don’t need replacing yet, I just want to remove one and test function without it. It’s not a self-loading rifle, it’s a man-op without gas system. The vise was able to support the recoil rods sufficiently to prevent movement, so I tried undoing a thrust piece and it didn’t budge a millimetre. I’ll not try again without further info, just in case. |
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Posted: 4/9/2018 8:01:01 AM EDT
[#5]
The thrust pieces have a lot of red loctite on them, they are impossible to remove without using a torch to heat them up and break the loctite.
You have to use even heat all around the chrome rod and at least one inch inwards, do not apply the heat in one place only for it will dis color the chrome rod. If done correctly no vise is even needed. 
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Posted: 4/9/2018 1:43:56 PM EDT
[#6]
Thanks very much, Pete.
I hit it for about six seconds with a torch and that was enough. Luckily they were economical with the threadlock on this one. Gloves and a towel were enough to safely remove the spring, and the wrench wasn't needed after intially loosening the thrust piece. Watch out for the tiny guide that sits inside the recoil rod - that would be easily lost. It was a lot less of a nuisance than stripping and reassembling the trigger pack. |
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Posted: 4/9/2018 1:55:07 PM EDT
[#7]
What is the "tiny guide"? Is it the little plunger that the stock's rods contact?
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Posted: 4/9/2018 2:17:16 PM EDT
[#8]
Quote HistoryQuoted:
Thanks very much, Pete. https://i.imgur.com/DuFQ4w1l.jpg I hit it for about six seconds with a torch and that was enough. Luckily they were economical with the threadlock on this one. Gloves and a towel were enough to safely remove the spring, and the wrench wasn't needed after intially loosening the thrust piece. Watch out for the tiny guide that sits inside the recoil rod - that would be easily lost. It was a lot less of a nuisance than stripping and reassembling the trigger pack. |
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Posted: 4/9/2018 5:37:28 PM EDT
[#9]
Quote HistoryQuoted:
What is the "tiny guide"? Is it the little plunger that the stock's rods contact? Quote HistoryQuoted:
What is the "tiny guide"? Is it the little plunger that the stock's rods contact? Quoted: Did you do both sides? |
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Posted: 4/9/2018 7:21:22 PM EDT
[#10]
You removed one of the recoil springs to make charging easier? That has to affect reliability...
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Posted: 4/9/2018 7:37:09 PM EDT
[#11]
Quote HistoryQuoted:
You removed one of the recoil springs to make charging easier? That has to affect reliability... |
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Posted: 4/9/2018 8:52:36 PM EDT
[#12]
Quote HistoryQuoted: Assuming he is in Great Britain then they can only have straight pull, so I don't think it will matter as there is no recoil. *Not my video:  Steyr AUG-Z 5.56mm UK Straight Pull at Bisley |
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Posted: 4/11/2018 6:32:28 AM EDT
[#13]
Quote HistoryQuoted:
Assuming he is in Great Britain then they can only have straight pull, so I don't think it will matter as there is no recoil. Quote HistoryQuoted:
Quoted:
You removed one of the recoil springs to make charging easier? That has to affect reliability... |
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Posted: 4/11/2018 9:03:15 AM EDT
[#14]
Quote HistoryQuoted:
A potential solution for people in less free States of the U.S. as well? |
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Posted: 4/12/2018 7:38:52 AM EDT
[#15]
Neat!
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