marlin 39a misfires
Thanks to Terry Syd and post #1791 I have corrected my problem with my nearly new marlin 39a, which has always misfired since I removed it from the box. I have been really frustrated with this rifle and the misfiring, no matter what type of ammo, and the Marlin engineering which is so poor that it requires the owner to modify their product just to get the rifle to perform properly.
I have been firing 22 rifles for over fifty years, brick after brick of all types of ammo, and never had a misfire with my Stevens Savage model 87 or my marlin model 60. Not until I purchased this rifle did I have problem after problem with ftf's.
Now I have corrected this problem by following Terry Syd's instructions on thread #1791. It was a very simple and fast procedure, and I began by just by filing off a small amount of the bottom of the Y, which is the part connected to the hammer spring and rebounds the hammer to a half cocked position after firing.
I was initially afraid to file off very much from the bottom y, and I would file off about 1/16th of an inch at a time, and reassembly the rifle for test firing.
After four attempts, I finally had to file off a total of about 1/4 of an inch from the bottom y, which meant the hammer barely rests on the firing pin after firing, instead of rebounding to a half cocked position.
IT WORKED! I have now fired several hundred rounds, with not a single misfire. The only precaution is the safety will not work unless the hammer is manually pulled back to the half cock postion, or another round is levered into the chamber, which automatically cocks the hammer and allows the safety to be engaged.
(INSTRUCTIONS: Look at your parts diagram. Carefully remove the buttstock, then push the hammer spring plate #38 to one side and remove the spring and the hammer rebound strut #35, which is shaped like a "y". Then file off a portion of the bottom part of the y. [This part of the "y" was facing down and toward the trigger, while in position in the rifle.] You can reassemble and test fire as I did, by filing off about 1/16th at a time, until your rifle does not misfire.)
A sincere thanks to Terry Syd and his advice. IF I HAD RETURNED IT TO MARLIN, THEY WOULD NOT HAVE ALTERED THIS PART.
GOOD LUCK TO ALL WITH THIS PROBLEM.
BBAKER