+- 6.5 Grendel Forum (https://65grendel.com)
+-- Forum: 6.5 GRENDEL DISCUSSION FORUMS (https://65grendel.com/forumdisplay.php?fid=3)
+--- Forum: 6.5 Grendel Troubleshooting (https://65grendel.com/forumdisplay.php?fid=15)
+--- Thread: Siezed gas block adjustment screw (/showthread.php?tid=23112)
Pages:
1
2
Siezed gas block adjustment screw - StoneHendge - 03-24-2021
My 2 piece JP gas block screw was inaccessible under the handguard since it's on the side. Never touched it but then again, I never needed to because I ran the same load for years. Now it is completely stuck and can bend a thin allen wrench far more than I thought it could be bent. My two thoughts are soaking it in Boretech Carbon Remover* or putting into the ultrasonic cleaner (I do have Hornady parts cleaning solution). Unsure of either approach since I might end up filling the narrow insides with sludge as it is broken free. Wondering is anyone has tried either method and has been successful.
* Not soliciting cleaning solution recommendations. We all have our favorites.
Siezed gas block adjustment screw - sundowner - 03-24-2021
I would try with the ultrasound unit last year I watched a video on YouTube showing some solving the same problem , he did run it through several cycles .
Siezed gas block adjustment screw - DCC83501 - 03-24-2021
I'd do the carbon remover soak if it was me. I only shoot suppressed and have AGB's on all my rifles. I generally drop a little clp on the adjustment screws once in a great while just cuz. I have not had one seize on me yet.
Siezed gas block adjustment screw - A5BLASTER - 03-24-2021
StoneHendge Wrote:My 2 piece JP gas block screw was inaccessible under the handguard since it's on the side. Never touched it but then again, I never needed to because I ran the same load for years. Now it is completely stuck and can bend a thin allen wrench far more than I thought it could be bent. My two thoughts are soaking it in Boretech Carbon Remover* or putting into the ultrasonic cleaner (I do have Hornady parts cleaning solution). Unsure of either approach since I might end up filling the narrow insides with sludge as it is broken free. Wondering is anyone has tried either method and has been successful.
* Not soliciting cleaning solution recommendations. We all have our favorites.
I would put it in the ultrasonic cleaner and keep running it till it breaks free and the adjustment screw can be moved again.
Then spray it with your choice of cleaner while working the screw in and out fully a few times.
Siezed gas block adjustment screw - Klem - 03-24-2021
SH,
I would heat it up somehow. If your ultrasonic bath doesn't have a heating function you could heat the cleaning solution some other way (microwave?) then into the ultrasonic cleaner with the part.
Siezed gas block adjustment screw - montana - 03-24-2021
Here is some good advice. https://www.youtube.com/watch?v=wNzl7oB3Ge0
Siezed gas block adjustment screw - PVBoom - 03-24-2021
DCC83501 Wrote:I'd do the carbon remover soak if it was me. I only shoot suppressed and have AGB's on all my rifles. I generally drop a little clp on the adjustment screws once in a great while just cuz. I have not had one seize on me yet.
Thanks. I was wondering what preventative maintenance would work.
Siezed gas block adjustment screw - VASCAR2 - 03-24-2021
My first thought was using Kroil penetrating oil for a few days then a little heat from a hair drier or glue gun to warm the screw before trying to break it loose.
Siezed gas block adjustment screw - Mad Charlie - 03-25-2021
VASCAR2 Wrote:My first thought was using Kroil penetrating oil for a few days then a little heat from a hair drier or glue gun to warm the screw before trying to break it loose.
I would do that before I stuck the end of the barrel in to a bucket of carb cleaner. I also would heat it up before applying the penetrating oil.
B'Laster is a known carbon cutter. Plus, I would be squirting whatever penetrating fluid I was using, down the gas tube as well, the idea being to get it to both ends of the adjustment screw. More than one application of heat and penetrating oil may be necessary.
There is a product called "Quicksilver Power Tune" that is used to de-carbonize 2 stroke outboard engines, that comes in a spray can, might be an option also.
I used a bit of anti-seize when I installed mine, so I haven't had to address this issue yet, but the above should work.
Just some ideas here, since I haven't had to do any of this to the only rifle that I have an adjustable block on.
Oh yeah, another thing, if I was going to use the carb cleaner soak I would take the gas block off the barrel. Hanging the upper up somehow with the end of the barrel in a bucket of very caustic chemicals sounds like a perfect opportunity for the accident fairy to land. Not to mention cleanup is much easier.
Siezed gas block adjustment screw - BlogSarge - 03-25-2021
Chalk up another vote for Kroil and heat.
Siezed gas block adjustment screw - StoneHendge - 03-25-2021
Thanks everyone, looks like it will be getting a hot bath in the Ultrasonic cleaner this weekend. Montana, I bet they guy using carburator cleaner still uses Hoppe's.
Siezed gas block adjustment screw - montana - 03-26-2021
StoneHendge Wrote:Thanks everyone, looks like it will be getting a hot bath in the Ultrasonic cleaner this weekend. Montana, I bet they guy using carburator cleaner still uses Hoppe's.
No bet, everyone uses Hoppes...
Siezed gas block adjustment screw - DCC83501 - 03-26-2021
Mad Charlie Wrote:I would do that before I stuck the end of the barrel in to a bucket of carb cleaner. I also would heat it up before applying the penetrating oil.
B'Laster is a known carbon cutter. Plus, I would be squirting whatever penetrating fluid I was using, down the gas tube as well, the idea being to get it to both ends of the adjustment screw. More than one application of heat and penetrating oil may be necessary.
There is a product called "Quicksilver Power Tune" that is used to de-carbonize 2 stroke outboard engines, that comes in a spray can, might be an option also.
I used a bit of anti-seize when I installed mine, so I haven't had to address this issue yet, but the above should work.
Just some ideas here, since I haven't had to do any of this to the only rifle that I have an adjustable block on.
Oh yeah, another thing, if I was going to use the carb cleaner soak I would take the gas block off the barrel. Hanging the upper up somehow with the end of the barrel in a bucket of very caustic chemicals sounds like a perfect opportunity for the accident fairy to land. Not to mention cleanup is much easier.
I'd agree. I assumed he would be removing the GB from rifle and soaking.
Siezed gas block adjustment screw - wheelguner - 03-27-2021
Plus one on the Kroil....This stuff is almost magical at freeing screws. I have a collection of different size Pyrex beakers depending on the size of the part. I put the part in the appropriated size beaker with Kroil and put the beaker in my ultrasonic cleaner. I keep my cleaner filled with a working solution of Italian Gun Grease Stiletto Gun Bath which is the best I have ever used. The combination of Kroil and the high frequency vibrations has yet to fail me.
Siezed gas block adjustment screw - StoneHendge - 03-31-2021
Well, the Ultrasonic cleaner didn't work. Even the gas tube is still stuck in. I'm guessing the carbon buildup is halfway to being a synthetic diamond. The carbon is subjected to gas port pressures with this design:
[ATTACH=CONFIG]17730[/ATTACH]
The problem probably isn't with carbon in the threads - rather build up on the exposed screw that won't allow it to fit into the threads.
Screw head is stripped. Was going to take it to the dumpster, but since it still has the gas tube and is 2 piece, it will make a novel support for a potted chile pepper plant on the deck. I'll put the $20 I could have spent on Kroil towards a Superlative that won't have this problem and that can be accessed under any handguard
Siezed gas block adjustment screw - lazyengineer - 03-31-2021
Does Break Cleaner spray work as well as Kroil at this task?
Siezed gas block adjustment screw - StoneHendge - 03-31-2021
lazyengineer Wrote:Does Break Cleaner spray work as well as Kroil at this task?
I don't think any of the Kroil recommenders have actually used it for this specific task.
Siezed gas block adjustment screw - D.Davis - 03-31-2021
SH, I have used Kriol and find it superior although smelly.
Siezed gas block adjustment screw - StoneHendge - 03-31-2021
D.Davis Wrote:SH, I have used Kriol and find it superior although smelly.
You've used it to loosen a carbon baked and pressure cooked gas block adjustment screw?
Siezed gas block adjustment screw - D.Davis - 03-31-2021
SH, for myself I buy it buy the gallon. Try it let it soak it, it wicks, tell me what you think. Dave.