 frankiebagadonuts 
Member
Joined: May 2010  FL, USA
 Posts: 525 Feedback: 100% (4) |
Posted: 4/5/2012 9:12:03 AM
THE IMAGE ABOVE IS A PAID ADVERTISEMENT |
|
|
|
|
Posted: 4/5/2012 9:18:41 AM
I know this may be a stupid question, but did you remove the bolt carrier group from the upper first? What I once did to remove a very tight gas tube was to grasp it with a pair of vise-grips and tap on them with a hammer to break the gas tube loose. This may or may not booger up the gas tube. hth
|
|
|
|
TeeRex
Aspiring Stamp Collector
Team Member
Joined: Oct 2009 OH, USA
Posts: 6418 Feedback: 100% (2) Link To This Post |
Posted: 4/5/2012 9:24:09 AM
Gas tubes can be kind of a pain to get out. Sometime they get damaged coming out, and just have to be replaced. Luckily they are a relatively cheap part.
|
|
|
|
Posted: 4/5/2012 9:28:30 AM
rubber tape wrapped around a locking vicegrip, then tap with a hammer. good luck.
fatkid |
|
|
|
Covertness
Member
Team Member
Joined: Dec 2010 NC, USA
Posts: 3777 Feedback: 100% (20) Link To This Post |
Posted: 4/5/2012 9:33:18 AM
Buy a gas tube wrench from Brownells or somebody so you can get a hold of the tube without crushing it.
Kroil oil to break up the carbon build up will help as well. Last resort, pair of vise grips and destroy it to get it out and replace it. Gas tube is too cheap to really worry about. |
|
|
Gregory_K
Member
Team Member
Joined: Feb 2003 PA, USA
Posts: 15391 Feedback: 0% (0) Link To This Post |
Posted: 4/5/2012 9:58:13 AM
put gas tube in vice, verticle, so that you can push the rest of the upper down to remove the gas tube. verry easy way.
|
|
|
|
|
Posted: 4/5/2012 10:59:14 AM
I use plier with taped foam protection on jaws and pull tube toward the upper receiver.
|
|
|
|
The_Beer_Slayer
Combat Moderator
Site Staff
Joined: Nov 2000 AL, USA
Posts: 61755 Feedback: 100% (11) Link To This Post |
Posted: 4/5/2012 11:22:57 AM
my technique...
clamp upper into vise with reciever block. clamp vice grips to tube <not enough to crush just tight soak gas block with pb blaster and let soak a few min. tap on vice grips with hammer <tap dont pound> usually breaks few in a couple of taps and slides right out. |
|
|
|
Posted: 4/5/2012 12:27:31 PM
[Last Edit: 4/5/2012 12:28:25 PM by Direct-Drive]
Here's a possible, non-destructive way to remove the tube.
Don't freak out when you see the pliers. Gas Tube Removal |
|
|
|
|
Posted: 4/5/2012 9:05:21 PM
Well, I tried the vice method as well as the vice grip (with duck tape) and hammer method. All I managed to do was put some scratches in the tube. I did knock the pins out of the FSB, which would have been easier had I not started by pounding them in farther in the wrong direction
 . At least they will be even on both sides now when I reinstall. I'm going to try to just wok around the gas tube. With the FSB free, I should be able to cut the handguard cap off around the tube. |
|
|
|
|
Posted: 4/5/2012 11:06:56 PM
Originally Posted By frankiebagadonuts:
Well, I tried the vice method as well as the vice grip (with duck tape) and hammer method. All I managed to do was put some scratches in the tube. I did knock the pins out of the FSB, which would have been easier had I not started by pounding them in farther in the wrong direction . At least they will be even on both sides now when I reinstall. I'm going to try to just wok around the gas tube. With the FSB free, I should be able to cut the handguard cap off around the tube.I might have missed this but, you did remove the gas tube pin too right??? |
|
|
|
USMC2147
Member
Team Member
Joined: Jan 2010 IL, USA
Posts: 530 Feedback: 100% (7) Link To This Post |
Posted: 4/6/2012 2:57:06 AM
Originally Posted By frankiebagadonuts:
Well, I tried the vice method as well as the vice grip (with duck tape) and hammer method. All I managed to do was put some scratches in the tube. I did knock the pins out of the FSB, which would have been easier had I not started by pounding them in farther in the wrong direction . At least they will be even on both sides now when I reinstall. I'm going to try to just wok around the gas tube. With the FSB free, I should be able to cut the handguard cap off around the tube.You need to soak it in Carb and Choke cleaner, that will help break down the carbon and should help to loosen up the tube. If that dosen't do it, get a product called Oil Eater. You can find it in the big box stores, hardware stores and some auto parts stores. I have used this stuff to clean everything from a nasty grill that wasn't cleaned out (the shell not the grate) for about 10 years. I sprayed it on and let it sit for 15 mins and that grill looked like brand new inside. I also use it when we clean out EGR's and EGR Coolers off of diesel engines, they also look new when done. I also use it around the house as it is a great cleaner and is eco friendly. Anyway try these out, one should get you to be able to seperate the two. |
|
|
justin_schuyler
Stamp Collector
Team Member
Joined: Dec 2009 FL, USA
Posts: 1313 Feedback: 100% (4) Link To This Post |
Posted: 4/6/2012 10:17:28 AM
Originally Posted By toddmog: Originally Posted By frankiebagadonuts: Well, I tried the vice method as well as the vice grip (with duck tape) and hammer method. All I managed to do was put some scratches in the tube. I did knock the pins out of the FSB, which would have been easier had I not started by pounding them in farther in the wrong direction . At least they will be even on both sides now when I reinstall. I'm going to try to just wok around the gas tube. With the FSB free, I should be able to cut the handguard cap off around the tube.I might have missed this but, you did remove the gas tube pin too right??? First line of the OP. |
|
|
|
Posted: 4/6/2012 4:05:16 PM
Originally Posted By justin_schuyler:
Originally Posted By toddmog:
Originally Posted By frankiebagadonuts:
Well, I tried the vice method as well as the vice grip (with duck tape) and hammer method. All I managed to do was put some scratches in the tube. I did knock the pins out of the FSB, which would have been easier had I not started by pounding them in farther in the wrong direction . At least they will be even on both sides now when I reinstall. I'm going to try to just wok around the gas tube. With the FSB free, I should be able to cut the handguard cap off around the tube.I might have missed this but, you did remove the gas tube pin too right??? First line of the OP. That's what I get for posting while tired. |
|
|
|
|
Posted: 4/7/2012 9:01:36 AM
PROJECT UPDATE:
I was able to cut the front cap at two spot on the bottom, pull the FSB/gas tube forward, and slide the remaining part of the cap off of the back of the tube. The delta ring, spring, and retainer were dremeled off with no drama. I can put everything back together now and call it done, but I'm not sure about the scratched gas tube. Does the gas tube see any real pressure where the deep scratches can compromise it, or is it just a non-pressurized conduit for gas to travel through? I'd just replace it for piece-of-mind (It's only $10), but I can't find one local, which means ordering one and waiting a week. This is the one weekend that I have free (no matches) and would be able to shoot my AR. So, replace it, or don't worry about the scratches in the tube and go shoot it?? |
|
|
|
|
Posted: 4/7/2012 11:22:32 AM
[Last Edit: 4/7/2012 11:26:32 AM by Espos1111]
I wouldn't worry about it, but then again I don't have a picture. I have removed the gas tube using the pliers / hammer technique before, scratched it up but never damaged it internally. I would think to get a scratch deep enough to damage the tube you would have crushed it as well. It is a pressurized "conduit" for gas. That is what moves your BCG. I might order a new tube but I would shoot it for now.
|
|
|
|
|
Posted: 4/7/2012 7:43:51 PM
Looks like I'm not going to get a chance to go shooting tomorrow anyways, so I ordered a new gas tube and pulled the old one out. Even once I wasn't worried about screwing it up, it was still a bitch to get out. I put some vice grips on it and twisted to break it free. Figured that it would just pull out after that, but it was still stuck. I ended up placing a block of wood against the back of the FSB, grabbed the tube with the vice grips right against the wood, and levered the vice grips against the wood. This finally pulled the tube out. In 3-4 business days, I'll finally be able to install my new rail
 .
Of course, the gas tube ended up costing me $120. I couldn't just order a gas tube from Midway since I was paying for shipping anyways. Funny how that always happens...  |
|
|
|
|
Posted: 4/7/2012 7:55:51 PM
Originally Posted By frankiebagadonuts:
Looks like I'm not going to get a chance to go shooting tomorrow anyways, so I ordered a new gas tube and pulled the old one out. Even once I wasn't worried about screwing it up, it was still a bitch to get out. I put some vice grips on it and twisted to break it free. Figured that it would just pull out after that, but it was still stuck. I ended up placing a block of wood against the back of the FSB, grabbed the tube with the vice grips right against the wood, and levered the vice grips against the wood. This finally pulled the tube out. In 3-4 business days, I'll finally be able to install my new rail .
Of course, the gas tube ended up costing me $120. I couldn't just order a gas tube from Midway since I was paying for shipping anyways. Funny how that always happens... lol and the dang promo codes you have to spend more money to save the extra $10 so free gas tube with your rail  |
|
|
|
QUIB
WWW.QUIBPHOTOGRAPHY.COM
Team Member
Joined: Oct 2001 USA
Posts: 22517 Feedback: 100% (11) Link To This Post |
Posted: 4/7/2012 11:10:08 PM
Originally Posted By frankiebagadonuts:
I bought a Centurion C4 rail to replace a DD Omega on my carbine (14.5" pinned with FSB). I have removed the gas tube roll pin, but the gas tube will not budge. My carbine has a lot of suppressed rounds through it, so the tube has a lot of carbon build-up on the FSB end. I have been spraying with PB Blaster every night to try to loosen it up. I wanted to get some tips on removing it prior to pulling the tools out and screwing something up. See page two. http://www.weaponevolution.com/forum/showthread.php?1613-FAQ-s-BASIC-INSPECTIONS-AND-PROCEDURES |
|
ARCHIVED
