Benjamin 392 Pivot roll pin

[BarnBoy]

Well, today I got some new roll pins, some 3/16 metal dowel rod, and a few cir-clips. I decided to try Rob's idea with the solid pin. I cut the dowel to length, then chucked the piece in the drill press, and cut a groove with a file as it spun. So, it makes for a half-decent pin. The cir-clips on either side should keep it fairly tight. I did notice that the pin turned a little bit in the yoke when pumping, not much maybe 1/8 inch or so, but return to their original position. Does this matter? I don't know if it will wear the yoke a bit? I did just oiled it and plan on keeping it well oiled. It seems to work well.

However the dowel rod I used is not hardened; I don't think it would bend, but whats your guys experience? Could it bend over time? I never over-pump, because 6 is plenty for squirrels and never really go to 8 pumps unless hunting bigger stuff or if I want to reach out a little farther.

One more thing, I did not need the punches for the install. But the pin fit snug but I was able to slide it in with my fingers. I hope thats ok?

Sorry if these sound like dumb questions, but I just want to be make sure it works ok.

Anyways, thanks for all the help and advice.

[Van]

On my 392 I used the top of a cheaper import drill bit to make the pin. They are harder than soft steel, but not so much that you can't cut off with a good hacksaw blade.   Then I used a small 6 inch mini hacksaw held against the spinning rod to make a clean cut for the clips.  It was the right thickness for the clips.  I have used soft metal rods before without problems at six to eight pumps, but made better ones when I started to pump 8-10 pumps more often.  Never noticed if they rotated, but I keep well oiled with no problems.

[Rob112o]

After, I buy a rifle be it new or vintage. When I remove those roll pins I never put them back in. I go to the hardware store and go to the drawer section. Get the 1" x 3/16" steel dowel pins and 4 c-clips. Boom, dunzo!! Problem solved and you don't have to worry about making that hole slightly bigger every time you bash those roll pins in and out. I think it looks better also, but that my opinion. Lastly, those roll pins are a haven/magnet for gunk, lint, and other pieces of matter. Which I feel eventually makes their way into the air tube when you oil that location.

hey Rob, are those pins already grooved for the c-clip, or, do you make the grooves yourself??

Nope, not already grooved, Scott. But, already cut to 1" X 3/16" and hardened, Barnboy. I use a thin pull blade and just run a notch across the dowel. Then I just put the middle part of "C" into that notch. None, of the Benji, 39x, and Dans have ha any issue with the dowel spinning. The 392 has been rocking them for 2years now. Now, a beat to poop 1st variant 140 I had did spin with the solid dowels at pump 4 and up. But, it was already rocking back and forth with the roll pins. The 140 looked like it had been serviced quite a bit and it had eventually bored those holes bigger. So that had to be drilled and taken up a size, 5/16"

[Sfttailrdr46]

  You have just got to love this place all of the different rifles have been fun to play with and the learning just never stops I like the pump arm pins that you guys have come up with. Necessity is definitely the mother of invention 

[BarnBoy]

Ok, Thanks for all the help guys. I am not worried about this pin, after shooting it for a bit. It is not going anywhere.