Norinco m305 op-rod guide moving

84mmcarl-gustav

84mmcarl-gustav

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Hi,i was checking the aligment of the operating rod,and it was misaligned with the gaz cylinder,so op rod guide is moving:mad:what the best way to tight it good,big sleg hammer..glue,welding torch,:Dthank for you help
 
Knock out the pin holding it onto the barrel and remove it, take a center punch and a hammer and make alot of dimples in the barrel where the op rod guide sits.
Take red loctite and apply this to the area and replace the op rod guide and pin....you may have to hit it back into position as the metal when dimpled raises up a bit.

Picture017.jpg
 
The two methods I've heard are:
1. Spot weld the op rod guide or
2. Remove op rod guide and use a punch to peen the metal under it and
This should make it tighter.
Personally I used jb weld and it's held up so far, but I suspect it's only a
Matter of time before I have to try either 1 or 2
 
chalkriver said:
Knock out the pin holding it onto the barrel and remove it, take a center punch and a hammer and make alot of dimples in the barrel where the op rod guide sits.
Take red loctite and apply this to the area and replace the op rod guide and pin....you may have to hit it back into position as the metal when dimpled raises up a bit.

Picture017.jpg
Click to expand...

This method was done to my M-14S at the Fredericton Hungry clinic back on the 16th. It seems to be holding up quite well.
 
Avoid that spot welding for the time being because when it's improperly done :eek: the chrome plating in the barrel can bubble or flake off! :(

Stick with the remove the pin, dimple the barrel and then replace the pin approach. Less invasive! :D

Cheers,
Barney
 
Hungry said:
Avoid that spot welding for the time being because when it's improperly done :eek: the chrome plating in the barrel can bubble or flake off! :(

Stick with the remove the pin, dimple the barrel and then replace the pin approach. Less invasive! :D

Cheers,
Barney
Click to expand...

Ever find a knurling tool for the job?

My groundhog is becoming quite tame now. When I slide the door open he will come right over for his carrot.
 
I guess I went a little overboard with the dimpling on my guide boss but when the guide went back on, it was very solid. Great advice Hungry, thanks!
 
Hungry said:
Avoid that spot welding for the time being because when it's improperly done :eek: the chrome plating in the barrel can bubble or flake off! :(

Stick with the remove the pin, dimple the barrel and then replace the pin approach. Less invasive! :D

Cheers,
Barney
Click to expand...
Got a even better and more easier way with a semi-permant solution to this issue and will show you at the 100th mile ;)
 
I used bearing sleeve retainer in place of red loctite. This stuff requires 3000 psi to break loose so unless you heat it out, you're good. The actual name of it is Loctite 640 and we use it at work when we never want a fastener coming loose.
 
I used J-B Weld on mine after finding that red Loctite would not hold the guide properly. The guide tended to get pushed over to the left (from the shooter's POV) thus binding the operating rod. It could also be easily rotated by hitting it with a plastic dead blow hammer.

I didn't stipple or knurl the barrel surface, which might be the reason why Loctiting didn't work.
 
Guide rod repair

Remove the operating rod guide, drill out the holes, tap holes with correct size tap and use set screws one on each side. Replace operating rod guide and adjust set screws to centre operating rod guide where you want it and tighten set screws. The set screws end up in the same groove as the roll pin so the guide can't move forward or backwards. This method gives you side to side adjustment and it won't move again. Another guy told me about this method so I can't take credit for it but it works great and gives you the adjustment ability that you don't have with any of the other methods.
 
Anyone know what happens if the op rod guide is not fixed, will it lead to some massive failure? should I be afraid for my life? Mine is loose, never knew it until I read this post.
 
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