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 Post subject: Model 37 difficult to pump
PostPosted: Sun Oct 18, 2020 2:59 pm 
Tournament Grade

Joined: Thu Dec 20, 2012 10:51 pm
Posts: 110
Hey folks!

So, a new to me 16 gauge model 37 works fine except that the "lock up" (ie when gun is read to fire) seems extremely tight. When I use the slide release or cycle shells, the back pull requires a little extra "umph". Similarly, to push the pump forward requires the same.

I believe the gun has sat for a long time and truly doesn't appear to have been have been shot much. The barrel also is snug, but rotates into place correctly. What I think is happening is there the excess? contact/friction between the bottom extractor and the bottom notch in the barrel.

Has anyone here run into this before? Advice on trying to fix this?

Thanks?




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 Post subject: Re: Model 37 difficult to pump
PostPosted: Sun Oct 18, 2020 3:03 pm 
Diamond Grade
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Joined: Wed Oct 14, 2015 6:58 am
Posts: 1760
Location: Omaha, NE
Sometimes the action rod can get bent. That happened on my dad’s 37. If it’s otherwise clean you might check that.

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 Post subject: Re: Model 37 difficult to pump
PostPosted: Sun Oct 18, 2020 3:11 pm 
Tournament Grade

Joined: Thu Dec 20, 2012 10:51 pm
Posts: 110
Thanks EricB. I don't think that's the issue, but will double check.


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 Post subject: Re: Model 37 difficult to pump
PostPosted: Sun Oct 18, 2020 3:59 pm 
Tournament Grade

Joined: Thu Dec 20, 2012 10:51 pm
Posts: 110
Feel like I should delete this post!

I had a chance to take a closer look and was right about the point of contact. And it was linked to the fact that the barrel was tight (ie not fully rotating into position due to crud in the threads). Additionally, the yoke was improperly set (this lone bungled screw on the gunshould have been a clue!).

After cleaning and lightly lubing the threads on the barrel and receiver and resetting the rotational position of the yoke, the issue is resolved.


Anyhow, glad I caught this because extractor impact to the barrel was just starting to damage threads.


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 Post subject: Re: Model 37 difficult to pump
PostPosted: Sun Oct 18, 2020 4:33 pm 
Diamond Grade
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Joined: Wed Oct 14, 2015 6:58 am
Posts: 1760
Location: Omaha, NE
Glad you got it figured out! Don’t delete the post though. Info like this is useful when people start googling.



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-Oscar Wilde


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