marlin 795 short stroking

[andpinger]

Ok so ive been having a bit of trouble with my marlin 795 semi-auto carbine. For about 50-30% of the time i fire the rifle with a variety of ammunition (cci, federal, remington, blazer, etc) the rifle will fire, eject the casing, chamber a new round from a magazine, but without cocking the hammer. So I will manually have to rack the charging handle hard enough to cock the hammer, to fire another round. This of course ejects a live round out of the chamber.

When I manually rack the charging handle back, I can definitely feel the tension of the hammer spring which feels quite stiff. I have actually manually racked the charging handle back and forth with ammo in the magazines and ejected/loaded rounds without the hammer cocking. So I'm pretty sure the problem is centered around the hammer spring/hammer. So what should I do to alleviate this problem? ...Note: The action was pretty dirty, so I recently soaked the action in hoppes and CLP and removed quite a bit of nasty crud from the rifle. I havent had a chance to shoot it yet, but judging by my racking of the charging handle I kinda feel that the problem will not go away.

 

[andpinger]

I forgot to add this, but It could be the reason for this malfunction. I received this rifle when I was pretty young (like 10-12) and I read through the manual thoroughly before operating it, but the manual never discouraged dry firing, so naturally I assumed it was safe to do. Not until about a year ago did I read that dry firing is bad for the rifle. I had been dry firing the gun regularly up until this discovery.:banghead: However upon inspection I did not notice any damage on the firing pin or any marks on the edge of the chamber. A youtube video i found actually showed that a guy's hammer was broken as a result of dry firing it...however mine has remained intact. Could my dry firing have lead to this malfunction where the hammer doesn't cock upon cycling?


heres the link to the video:
http://www.youtube.com/watch?v=X4yn1U1Qzq4

 

[courtgreene]

I HIGHLY doubt it was caused by dry firing. Could it be that it's not the hammer that's being short stroked, but instead the sear is messed up and thus not engaging?

 

[fireman 9731]

I'd say that a good cleaning a lube fixed the problem. Try to shoot it and see before you jump to conclusions.

 

[andpinger]

I HIGHLY doubt it was caused by dry firing. Could it be that it's not the hammer that's being short stroked, but instead the sear is messed up and thus not engaging?

when i disassemble the rifle and cock the hammer, I can clearly see the sear engaging the hammer... however when I cock the hammer, It does seem to have more tension when the hammer gets closer to engaging the sear.... so maybe I could be fixed with adjustments the the hammer spring

 

[hardluk1]

Cocking a firearm by hand and then fireing the rifle will cause it to react differently. Not knowing how long your haveing it from 10 years of age is I would think that you have some wear on eather the top edge of the hammer when the slid pushs back to cock it or wear on the sear that is not allowing it to catch when cycled as hard as they do when fired. I can do the same thing with a adjustable trigg. Works fine by hand but to close to ingauge when fired.

 

[rcmodel]

so maybe I could be fixed with adjustments the the hammer spring

Oh, don't do that!!

The hammer spring was right to begin with, and it hasen't gotten any stronger with age.

Take it out of the stock and do a complete & through cleaning & relube.

Look for wear on the hammer surface the bolt rides over to cock it.
Look for wear on the bolt cocking surface.

Grease both!

rc

 

[115grfmj]

Disconnector spring or lever.

Check the disconnector spring...the disconnector is the lever on the left side of the action ass. that has a bump on it. The bolts rides back and nocks it down thus "disconnecting" the sear from the trigger. If the spring is broken, weak, dirty, or not installed right the hammer will follow the bolt back forward. Don't ask me how I know this

Also check to make sure the Discon. lever itself moves freely and is now bent or caked in grime.

 

[andpinger]

Cocking a firearm by hand and then fireing the rifle will cause it to react differently. Not knowing how long your haveing it from 10 years of age is I would think that you have some wear on eather the top edge of the hammer when the slid pushs back to cock it or wear on the sear that is not allowing it to catch when cycled as hard as they do when fired. I can do the same thing with a adjustable trigg. Works fine by hand but to close to ingauge when fired.

Im 19, so I haven't had this rifle for more than 9 years and I would estimate the amt of ammo I put through this rifle to be only about 800-1200, so I doubt that it's wear on the hammer or sear.

115grfmj, I think that might be getting somewhere..... tomorrow when I get a chance to strip the rifle, I will report my findings tomorrow.

 

[hardluk1]

Well if you have no more ideas to look at contact marlin for a tuneup.