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Stuck Gas Spindle Valve

This is a discussion on Stuck Gas Spindle Valve within the The M14 forums, part of the M14 M1A Forum category; I have an Oldish second hand Spingfield M1a (preban) and for the life of me I cannot depress the spindle valve and turn it. This ...


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Old October 30th, 2005, 03:31 PM   #1
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Stuck Gas Spindle Valve

I have an Oldish second hand Spingfield M1a (preban) and for the life of me I cannot depress the spindle valve and turn it. This is not a unitized system so I do not believe the valve was staked in place, and I have put some oil in it to try and get it moving but to no avail. Tried to turn it as hard as I could without fear of breaking it, to the point where park has come off of valve - and it is still stuck. I have a gas alignment gauge and it reads that the gas port is lined up correctly to the spindle valve. So should I:

A. Leave as is? (Rather not, I like to close the spindle valve while cleaning)

B. Try and take it off and replace it(All I have to do is remove the spindle valve pin right? First time doing this...)

C. Do something else I have not considered.

Any particular tricks in replacing the spindle valve assembly? Thank you very much in advance!

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Old October 31st, 2005, 04:46 AM   #2
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This is not a unitized system so I do not believe the valve was staked in place


Many are unitized with two screws going thru the valve. You can see the screw heads, normally.


If it aint broke ...

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Old October 31st, 2005, 05:29 AM   #3
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Are you sure it isn't a screw-and-glue unitized gas system?

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Old October 31st, 2005, 04:36 PM   #4
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Pretty Sure. The front band is not attached to the gas tube, nor is there any evidence that it was unitized in the past. I cannot find any sign that the spindle valve has been staked in place, ala Army AMU method. When I first got the rifle I found the front band quite loose, and noticed that the gas lock needed to be tightened a bit in order to tighten it up - they are not attached together. I will check again but for the life of me I can find no screws.

here is a pic of the rifle as I got it - you can see the previous owner was also trying to get the spindle valve closed... Hence the silver shine.



Whatever the case thank you for your time!

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Old November 1st, 2005, 12:00 PM   #5
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If the valve is carboned up, try some carb cleaner. You can also try tapping on the valve. Applying a little heat may also help. If all else fails, spray it down with a mixture of WD40 & Kroil and let it sit over night. HTH

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Ox

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Old November 13th, 2005, 04:33 AM   #6
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dear yute:
soak it in kroil you can get kroil in most supply house or brownells or from kroil on a kroil introductory offer try the silikroil i think it lubes and works better. then drive out the roll pin on the opposite side of the spindle valve with a proper size roll pin driver.
then using a brass drift approx. the same size as the spindle valve drive out the valve from the roll pin side. the spring as well as the spindle valve will more likely than not be crudded up with carbon and probably oil.. get yourself a stainless steel bore brush put it on a section of cleaning rod and drive the brush in and out of the gas cylinder valve hole, using kroil as the cleaning agent when done, run a cleaning patch thru it until it comes out clean. the spindle valve can be cleaned with a stainless wire brush, with kroil and the spring as well. when clean just slip everything back in and rotate the valve by depressing in on the valve to unlock the spring tension. you will notice it turns just as you would want it too. jeff.
ps:if you want i can eliminate this for you by unitizing the whole assembly then you only have to clean the gas port hole and the gas cylinder bore. see my article in the steals and deals section.

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Old November 13th, 2005, 04:49 AM   #7
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Huey,
Thank you very much for the info - your instructions are most helpful. I appreciate it a lot. If i need to get things unitinized, I will definately ask you - thanks again!

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