Results 16 to 30 of 38
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2 January 2010, 03:33 #16
Automatic Center Punch is the easiest way, but for me it's not a single-purpose tool as I also use it for other things.
(and I stake a lot of receiver endplates for people. you know, after that impenetrable blue locktite comes loose )WWW.TACTICALYELLOWVISOR.NET
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2 January 2010, 07:25 #17
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2 January 2010, 11:47 #18Distinguished Member
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9 February 2010, 16:33 #19Member
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9 February 2010, 19:24 #20
I've reparied 100s if not 1000s of carriers and have not had a carrier key come lose nor broken a screw. My method is lapping the key on a whetstone, using Rocksett as a sealant on the key and on the screw threads. Using new screws Torx head and torquing to 55in lbs. Then staking with a MOACKS tool. YMMV.
My work regardless of nature features a lifetime warranty.
FWIW the Rocksett and torque will hold the screw tight. The staking ensures that it won't come lose even if the Rocksett somehow fails. Anyone who's been around aircraft (mainly helicopters) will remember torque on fasteners and secondary methods ensure that fasteners don't come lose.VA Arms Co FFL/SOT armorer
certified HK-sidearms/S&W M&P/BUSHMASTER/GLOCK/SIG-Sauer LE/FNH-SCAR armorer
competitive shooter sponsored by VA ArmsCo, W.A.R. rifles, BravoCoUSA, BCM, Bobro Engineering, Magpul, Magpul Dynamics, Hatfields Gunsmithing and Greeley Custom
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9 February 2010, 20:31 #21Distinguished Member
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Very true. Every fastener has a torque.
And self-locking nuts, cotter pins or safety wire to name a few, all act as back-ups to prevent loosening of hardware under the vibration of flight. Much the same way staking in addition to torque, keeps carrier key screws from backing out under the vibration of firing.
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10 February 2010, 09:55 #22
If using Permatex and torqueing works for Young then great. The point is to make sure that the key stays tight.
However I have to wonder about a couple of his statements.
“ The Mil Spec. also calls for the gas key bottom surface to be “SEALED” with Permatex gasket sealer.”
“ Don’t use a hammer and a punch! You can stretch the thread on the screw and now you have a loose screw that will eventually break if the gun even fires.”Last edited by 5pins; 10 February 2010 at 12:13.
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23 February 2010, 07:12 #23
Just a little update on this. I'm just finishing up the Colt Armorer Class and I asked the instructor about this topic.
The way Young Manufacturer recommends installing the carrier key is the new way of installing it and it is absolutely acceptable. If you want to stake the key after using the red loctite and torquing it down, you can, but it is NOT necessary. The old way of doing it is to torque the screws down and staking them. BOTH WAYS ARE ACCEPTABLE.
I also asked about the castle nut and he doesn't recommend using blue loctite because it can damage the threads. It will definitely hold it in place, but if you plan on taking the buffer tube off, he does not recommend using using the blue loctite so I won't be using any loctite on the buffer tube.
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23 February 2010, 09:58 #24
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23 February 2010, 11:49 #25
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24 February 2010, 02:39 #26
Interesting. I wonder if Colt has actually changed their procedure while assembling factory weapons. The most recent ones I have seen have substantial staking applied from the sides.
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24 February 2010, 02:58 #27
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24 February 2010, 04:15 #28
Without having any idea who this person is, I'm going to consider it one man's opinion.
Those that I've queried about this that know more than I do all share my opinion that the Young letter is no more than a way of explaining away why they do not do something that they cannot do. I see no reason not to stake other than a surface treatment that may crack, and I see no benefit in the surface treatment.
When the TDP changes, or Colt starts shipping guns with keys affixed in the manner listed, maybe I'll change my tune.WWW.TACTICALYELLOWVISOR.NET
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24 February 2010, 05:20 #29Manufacturer
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25 February 2010, 11:34 #30
Paulo,
Which instructor taught your class?