Mossberg Maverick 88 magazine issue

J

JesseB123

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Hey! Having an issue with the magazine on my Maverick. If you watch the video I made, it shows the problem which is that the shell stop will not release the next round when the action is cycled.

Just wondering if there's a quick fix for this, thanks!

[youtube]ItYbuOkPh0Q&context=C3408866ADOEgsToPDskKdk0u1mEMqEVsS5wtG1N5M[/youtube]
 
My 88 did the same thing ... turned out I had a chunk of a branch jammed in it that was stopping the pump from cycling the last fraction of an inch, which prevented the mag catch from releasing.
 
Yes cycling all the way back, tried slamming it hard to get it all the way and it's going the full length. When a shell is inserted into the chamber, it has no problem ejecting.
 
I've never stripped mine to know if there are any nifty little doo-dad's in there that may have broken ... you might want to look up a parts manual for it, or a Mossberg 500, iirc the 500 are near identical to the Mav 88's.
 
Check to make sure the wedge on the action bar isn't damaged/jammed; It should look like this:

http://imageshack.us/photo/my-images/844/dscn0016q.jpg/

In the picture below, you can see were that wedge slides against the shell stop. The action bar should be able to move back an additional 1/4" to disengage the shell stop. Your gun should not look like this if the pump is fully retracted.

http://imageshack.us/photo/my-images/401/dscn0015gh.jpg/
 
Those pictures are helpful, looks like it's working fine now. I took it apart and put it back together twice. The second time, it's working just right. Watched the disassembly and reassembly video on youtube and that helped it get back together in one working piece I guess.
 
Now that yopu have it together and working ...

When did it start this problem? After a re-assembly, or on it's own?

If it did this by itself, I'd take it apart oncemore, and check all the wear surfaces for unusual wear andmake sure something isn't out of kilter that caused this problem to begin with.

Failing that, it's an 88. Shoot it till it begs for mercy :D Mine's been going on 20 years now and still functions like day one.
 
IMagius said:
Now that yopu have it together and working ...

When did it start this problem? After a re-assembly, or on it's own?

If it did this by itself, I'd take it apart oncemore, and check all the wear surfaces for unusual wear andmake sure something isn't out of kilter that caused this problem to begin with.

Failing that, it's an 88. Shoot it till it begs for mercy :D Mine's been going on 20 years now and still functions like day one.
Click to expand...

I'm actually going to post a couple pictures of some wear that I'm unsure is 'normal' when I can tonight. The problem started a little while after it's first disassembly. It worked fine for awhile then the problem started. Posted here when I got home, took it apart, put it back together, didn't work, took it apart again, back together poof it works.
 
I'll grab mine and rip it apart ... haven't had it apart in over 10 years, so I'm sure there's some gunk & grime in there that needs cleaning :D ... will grab a few pics for you to compare against yours.
 
Alright, so I pulled it out to take some pics and while it was in the closet the evil monkey decided to screw with the magazine because it's not working again.

Here's a pic of the wear that I'm not sure is normal.

IMAG0707.png


And here's a couple shells from yesterday, just before the problem started. When I pulled out my dummy rounds to try cycling it, I noticed one of the high brass slug casings I had kept had some gnarly wear and looks like something chewed it up.

IMAG0702.jpg


When cycled, it looks like the slide isn't going all the way back. After disassembly, and cycling it without the trigger assembly in it so I can see the bolt and carrier move, it looks like there's nothing blocking it. Frankly I'm miffed.
 
Watching you video again, it looks like something is stopping the action from sliding fully back. On my 88, the Shell Elevator drops below the bottom of the receiever by a 1/16" when the pump is fully rectracted. It looks like yours is staying just below flush, and by playing with mine, it's that last 3'8" of travel that drops the Elevator fully & disengages the shell stop bar.

The wear marks you are shoing seem "normal" to me ... I also have a couple noticeble wear marks in the same area ... 20 years, probably in the 5,000 to 10,000 round count through this gun, and they never got worse or impeded the action in any way.
88wear.jpg


Also, check the slide bar at the point indicated by the arrow. That beveled tab is the "activator" that retracts the shell stop bar to allow the next shell to be loaded. (slide is about "half cocked" in this picture)
Dsc_1416-edit.jpg


Fully retracted, you can see the height of the shell elevator.
DSC_1417Medium.jpg
 
SO. I found the problem. Everyone's insistence that something was blocking the action from cycling fully rearward was correct. The bolt holding the ATI pistol grip stock on is JUST too long, and when attached tight enough so that the stock does not wobble, it protrudes into the receiver JUST far enough to block the bolt. I'm going to have to pick up some washers tomorrow to bring the mounting hardware out of the receiver to clear the action. I tried some tension adjustments, just tight enough so that the stock didn't wobble, but it still protruded too far.

Now I'm guessing the route of the problem is that I overtightened it, combined with the trauma of slugs vs. target loads loosened the material in the stock enough that the hardware holding it onto the gun moved so that it interfered with the action.

Glad I got it figured, thanks for all your time and help and the pictures!
 
Not familiar with that stock ... is the bedding surface for the bolt head synthetic? If so, then I agree with your choice in adding washers to move the bolt out of the receiver. Sounds like heavy use has caused teh bolt to wear the material and "sibk" deeper than it should.

Glad you found the issue, and a simple solution.
 
IMagius said:
Not familiar with that stock ... is the bedding surface for the bolt head synthetic? If so, then I agree with your choice in adding washers to move the bolt out of the receiver. Sounds like heavy use has caused teh bolt to wear the material and "sibk" deeper than it should.

Glad you found the issue, and a simple solution.
Click to expand...

Yes, it is synthetic - not sure how I feel about such a high stress area being so pliable. Indeed it did sink deeper than it should and I think washers will do the trick to rectify that unwanted added travel.
 
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