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Discussion Starter · #1 ·
Aloha...

I tried to punch out the retaining pin for the bullet guide on my Poly the other day and to say it was difficult would be an under statement.

1. I think the pin is a solid pin and NOT a roll pin.
2. I broke or bent three pin punches trying to get it out.

Does anyone have any idea why the dang thing is in there so tight? I know it went in so it should be able to come out. But geez... this is really ridiculous.

How would you get the retaining pin out? On all of the US made, rifles, I have NOT had a problem with this... only on this particular rifle (Poly).

Thanks in advance for any help you could lend on this...

Aloha,

Tom O.
 

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Wow Tom, if you couldn't get it out it must be pretty darn tight!

Not sure what to tell ya...did you tried heating it up? Maybe using a press to push it out.
 

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Discussion Starter · #4 ·
I tried Kroil that is reputed to loosen the toughest metal parts that are stuck together and it was a "no go"...

I may have to just leave it... if its too tight...

I had intended on installing a scope mount, but my tests will just have to be "irons" only...

Thanks,

Tom O.
 

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Applying heat is a last resort as you change the temper of the metal.

I have two sets of punches. One set I had cut 2/3 of the punch off which strengthens them. These I use as my starter punches. There is a trick of putting the punch in the chuck of the drill press & using the drill press to push with.

HH
 

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Tom,

I had the same problem with my Springfield. I destroyed a punch getting that darned thing out of the weapon.

Luckily, it was a cheap one...
 

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Discussion Starter · #7 ·
Yeah, this pin is in there solid!!! I will try to give the cut punches and maybe even the drill press a try... maybe it will do the trick.

HH, the applying that much pressure on the drill press won't damage the bearings? Just wondering... I really whacked the punches pretty hard with the hammer, I can only imagine what kind of pressure it will require for me pulling on the drill press handles...

In addition, this sucker is in at a angle so that makes it doubly hard to use other types of presses to work on this problem...

If it ever comes out, I will immediately replace it with a roll pin... those are so much easier...

Thanks for your help guys!!!

Aloha,

Tom O.
 

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Don't know what type of drill press you have access to but have seen bike mechanic put his fukk 240-250lbs to the lever drilling case hardened bolts out.
If the piece gets clamped to the base put some little pieces of plywood to the sides that your part will "bite" into the plywood. This will allow the piece to be aligned & no damage from the clamp.

HH
 

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tom:
which way are you attempting to drive out the pin? if you are trying to drive it out from the top stop right away.Drive out the pin by removing the bolt and turning the gun upside down drive from bottom up and out thru bullet guide. put the kroil on from bottom as you drive it it will come out. the roll pin crimps at the top when it is driven in initially SO IT SPREADS OUT INSIDE THE HOLE IN THE GUDE. call me at 845-564-1219. if you have any problems with what i have said. jeff
 

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Discussion Starter · #10 ·
Aloha Jeff!!!

Is that you? Wow, I shoulda known... I should have sent you some email. I hope you are well... it is really good to see that you're still keeping up!

I have not continued working on this one since I broke my punches, and I have been trying from the bottom of the receiver to the top. I didn't put Kroil into the bottom though(the side I was punching from) I let it soak in the top then tried and broke the last of my small punches and gave up.

I will buy some new punches, but a bit of the length off of one of them to give it more strength, put Kroil in both ends and see where it goes from there... it is not essential that I remove it, but it would be nice to replace all of the solid pins with roll pins.

Thanks for your suggestions!!! I will call if I still have that problem. Also, THANK YOU for helping me with that gas cylinder. I have it mounted on a pre-ban that I got. That pre-ban had a bolt that was bad, so it went to SA and they are sending a new one!

Have you seen my other posts? I am slowly learning more about the M14 type rifle and trying to better understand how to create accurate rifles, boy, am I having fun!!! It's been a real fun time so far.

Aloha and Best Wishes,

Tom O.
 

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Discussion Starter · #11 ·
Aloha HH:

I think my drill press is too light weight. :oops: I will probably try the punches again, after I buy more. :lol:

Thanks for your help...

Aloha and Best Wishes,

Tom O.
 

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dighawaii said:
Aloha HH:

I think my drill press is too light weight. :oops: I will probably try the punches again, after I buy more. :lol:

Thanks for your help...

Aloha and Best Wishes,

Tom O.
hrm... wd 40? try that,what happened to mine was i was using a philips head screwdriver, and i guess it was too small and it was going inside of the pin itself making it harder for me to remove, so when i saw that i got a bigger philips and knocked it right out, thing is i caught it early, you might have run into the same problem as me, but you might be too late.

i hope not, try and get the biggest punch that will fit in there, and try, or get some of those speciality philips screwdrivers that comes in insanely small sizes and try that.

if that doest work, try a butane torch and add some heat to that mofo.

if all that doesnt work

im out of ideas 8) 8O :lol: :eek: :oops: :cry:
 

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http://www.computercleanusa.com/products/getprod.asp?product_id=FREEZESPRAY

Tom, if that's really a solid pin, which you should verify, then you've got a challenge. It would be best to reverse it out. I would say have a few #3 roll pin punches ready, but if it's a solid pin, get straight punches.

Get everything ready to go, brace the receiver, freeze the #@&%*$ out of that pin and entire clip guide, pray, and tap away. Heating might cause mutual expansion, making the pin bigger & hole smaller. Solvents can't penetrate truly fused components, but only help when things finally get moving.

A 3/32 x 9/16 roll pin, slight taper grind to leading tip, will be needed upon re-assembly. Are you doing a refinishing?

There is a heavier-duty cryo spray, but I forgot the name, sorry.

Good luck.
 

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Discussion Starter · #17 ·
Aloha Everyone:

Thanks for the suggestions... I will certainly review this thread when the punches come in...

I really appreciate everyone's help and support... it seemed like such a simple thing at first, and I cannot imagine how that pin got so stuck in there, unless the person who originally installed it had "gorilla" type forearms... :lol:

We'll see...

Aloha,

Tom O.
 
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