Rubbing my woody beats plastic pleasure
Mr FM was trying to tempt me to the joys of a plastic rod yesterday, great fun, and a real buzz but, but they aren't the real thing...
To redeem myself I had to get my woody (Marlin 1894c) out on to the table for a proper polish. I'm annoyed because I have used Rusty's ttakedown instructions before but I had missed his fix for the "Marlin Jam", which I occasionally suffer from. If only I had read it when I first got the gun.
I applied the small file to the offending edge and, while I haven't test fired it since the action feels a lot smoother - I hope I caught it before it got too bad....
Fixing the dreaded “Marlin Jam”
By Rusty Marlin
How the Action Normally Works:
As the lever is cycled, it slightly lifts the cartridge carrier which allows one shell to come onto the carrier. And the carrier blocks the other shells so they stay in the magazine tube.
The "Marlin Jam" as it is affectionately known is caused by an inherent design/manufacturing flaw of the Marlin lever. The lever has a snail shaped cam surface that goes around the pivot screw. Every time the lever is cycled the carrier bounces on the forward edge of the cam. The forward most edge of this cam is left sharp at the factory (the flaw).
After many thousands of cycles, the sharp edge cuts into the carrier enought so that the timing is slightly changed. At first, you will feel a slight "hitch" when cycling, then the timing will get worse; the carrier nose gets lower in relation to the magazine tube opening so that two shells are allowed to exit the magazine. The first shell comes in on top of the carrier as normal, and the second shell slips past the carrier nose and gets trapped between the top of the carrier and the magazine opening in the frame.
Marlin calls this "letting in two" because rather than letting in one cartridge at a time, the carrier allows two to slip by......