The Firing Line Forums

Go Back   The Firing Line Forums > The Skunkworks > The Smithy

Reply
 
Thread Tools
Old July 24, 2009, 10:57 PM   #1
Tucker 2
Member
 
Join Date: September 19, 2006
Posts: 95
Marlin M39m Failure to feed

New to me Mountie that was made in the 70's I believe. Failure to feed on every round, but will feed almost every round if canted 45 degrees to the left and lever moved a bit slowly.

The problem occurs with all ammo makes and type.

Ejection works perfect.

Any suggestions would be appreciated.

Tom

Added Sat 7/25... When the new round jams the nose is just below the chamber mouth.

Last edited by Tucker 2; July 25, 2009 at 01:07 PM.
Tucker 2 is offline  
Old July 25, 2009, 07:33 AM   #2
Goatwhiskers
Senior Member
 
Join Date: April 8, 2009
Location: Batchelor, La.
Posts: 478
First of all, a detailed clean and lube. Then the first likelihood is a weak spring in the mag tube, second would be a problem with the shell stop located on the left frame wall. Not complicated, but some analytical thinking required. Here endeth the lesson. Goatwhiskers the Elder
Goatwhiskers is offline  
Old July 25, 2009, 01:05 PM   #3
Tucker 2
Member
 
Join Date: September 19, 2006
Posts: 95
Thanks for your reply. Detailed clean and lube accomplished. I will order a new spring and look into the shell stop as you suggested.

Tom
Tucker 2 is offline  
Old July 25, 2009, 02:15 PM   #4
Goatwhiskers
Senior Member
 
Join Date: April 8, 2009
Location: Batchelor, La.
Posts: 478
A little hint: if you put in a new mag spring, of course you know how to tap out the little pin at the head end---tap on the long end sticking out. The other end has a little locking bur so the pin must go back in the way it came out. Also, the hole may not have been drill exactly centered on the tube, so be sure that the hole lines up correctly before you drive the pin back in. Goat
Goatwhiskers is offline  
Old July 25, 2009, 07:15 PM   #5
Dfariswheel
Senior Member
 
Join Date: May 4, 2001
Posts: 6,836
Other things to check are the bullet guides.

The Marlin has a flat spring-like guide in the top inside of the receiver that is often lost when someone mistakes the screw for a scope mounting hole.

The second bullet guide on the 1970's version 39 is a long heavy steel block in the right receiver side. This has a flat spring under it.

Both of these serve to help control and guide the cartridge during feeding.

Here's an exploded view of the Marlin:

http://www.stevespages.com/ipb-marlin-39a.html

The top bullet guide is part # 27 and its screw part #32.
The receiver bullet guide is part #41, its retaining pin part #44, and its spring part #55
Dfariswheel is offline  
Old July 26, 2009, 11:53 AM   #6
Tucker 2
Member
 
Join Date: September 19, 2006
Posts: 95
Thanks gents, I'll work on those suggestions today.
Tucker 2 is offline  
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 02:04 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2014 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Contact Us
Page generated in 0.06829 seconds with 7 queries