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12/4/2004 6:58:18 PM EDT
Have a Norinco M14 that has developed a loose operating rod guide (rocks side to side so much that it's noticeable on the rod). Drifted the pin out, moved the guide and found... nothing obviously wrong. Reinstalled it and it's still loose, so the only thing my non-gunsmith mind can conclude is that wear (I assume on the pin) has made it loose. Has anyone else had this problem and what can be done about it by an amateur, if anything?  Is it even something that needs to be addressed?  Is it dangerous to fire like this?
12/4/2004 8:49:54 PM EDT
[#1]
The pin has probably been removed and reinstalled a few times. Get a new one and it should be fine.
You can stipple the bearing surface of the barrel if need be. I've done that too.
12/5/2004 6:55:35 AM EDT
[#2]
Red Loctite (271 threadlocker???) will keep the guide in place.  Make sure that the end of the op rod is centered on the piston prior to the loctite setting up, you can adjust this after assembly by tapping the guide with a mallet.
12/5/2004 6:58:22 AM EDT
[#3]
Quoted:
Red Loctite (271 threadlocker???) will keep the guide in place.  Make sure that the end of the op rod is centered on the piston prior to the loctite setting up, you can adjust this after assembly by tapping the guide with a mallet.


Simple "red locktite" will keep the op rod guide from moving side to side?!  Even under the jolts of firing the rifle?
12/5/2004 7:19:08 AM EDT
[#4]
jtb33:  yes, it has.  Used it about four years ago.  Although on my rifle the guide was not so loose as the Norinco owner's seems to be. Mine seemed tight but was misaligned, causing the end of the op rod to not be centered on the piston.
12/5/2004 12:57:17 PM EDT
[#5]
Quoted:
The pin has probably been removed and reinstalled a few times. Get a new one and it should be fine.
You can stipple the bearing surface of the barrel if need be. I've done that too.

This is good advise.  Use a center punch to accomplish this.  You're only trying to raise some metal, not deform the bore.

Mike
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