CZ 858 and VZ 58 experts.....I need help

Throttle_monkey1

Throttle_monkey1

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Hey guys, I was out shooting my CZ 858 today. After a while it wouldn't fire. It would etract spent casing and chamber a new one correctly, but when I pulled the trigger, the trigger would move back halfway and get stuck. The striker would not be released.

So now I have been trying to dry fire it, and it still won't fire. The worst part is that it has to be uncocked to take the top cover off, and I can't for the life of me get it to even dry fire. Any ideas?
 
I have just taken the cover off mine to take a look. If you take the the pistol grip off you will be able to dislodge ( push up) the captive nut that the pistol grip bolt screws into. If you then get a small piece of wire bent into a hook and insert this into the hole underneath where the pistol grip attatches, you should with a little bit of winkling be able to loop it over the sear spring, pull down and release the striker. Then you will be able to get at the internals to see what the problem is.

Hope this helps
 
PPS The only thing that I can think of that would stop the trigger half way would be a piece of crap stuck under the linkage. I can see how this could easily happen. Try this first,if the rifle is unloaded then rap the rifle muzzle onto a piece of wood on the floor, that might well dislodge it. If not proceed with plan A.
 
Flobalob thanks for the advice. I will try this when I get home from my parents place. I know that ljungmann had a similar problem on his 858 a few weeks back. He replaced the fire control group after buying a parts kit from wolverine supplies. I am also going to replace the fire control group.

I am also curious if it is some debris, or if something has broken within the trigger group. I will keep you posted, thanks again for the advice.
 
also I forgot to mention, when the trigger gets stuck halfway, It will not return to the oiriginal position, I have to #### the action again to get the trigger to return to its original position.
 
Throttle_monkey1 said:
Flobalob thanks for the advice. I will try this when I get home from my parents place. I know that ljungmann had a similar problem on his 858 a few weeks back. He replaced the fire control group after buying a parts kit from wolverine supplies. I am also going to replace the fire control group.

I am also curious if it is some debris, or if something has broken within the trigger group. I will keep you posted, thanks again for the advice.
Click to expand...

You are welcome, I hope the advise works:D

Keep me informed, I am very curious as to what is causing the problem.
 
Bartledan broke my VZ58 like that......
I fixed it by pushing the trigger forward. I think the trigger return spring wasn't strong enough to overcome the disconnect.
Give that a try, you should hear it clic and then the trigger will be engaged with the sear again.
 
I think I have figured it out. Flobalob, I owe you a beer man, your method worked perfectly, i was able to dry fire the gun through the pistol grip hole. Hitzy thanks for the advice. I tried your method as well, but it didn't allow the strike to slam forward. I took the rifle apart and fiddled with it.

I noticed that when I pull the trigger, it only lowers the linkage enough to release the striker half the time, as there is play in the height of the striker. There is a tab on the trigger that hits the receiver when you pull the trigger (on outside of rifle). This prevents further movement of the trigger and linkage (or sear). I am going to file this tab down a tiny bit which will allow the sear to drop enough to release the striker.
 
Holy ####, what a nightmare. I have taken the thing apart. It fired fine but as soon as I put the pin in the top cover, It will not fire. The pin must be putting too much downward pressure onto the striker, and the sear isn't dropping enough to let it fire. Now I am thinking of filing the sear (knowing our laws, I will probably go to jail for 20 years for doing this).

Anyone else got any ideas? I think I will just get the parts kit from wolverine and replace the whole fire control group.
 
Throttle_monkey1 said:
Holy f**k, what a nightmare. I have taken the thing apart. It fired fine but as soon as I put the pin in the top cover, It will not fire. The pin must be putting too much downward pressure onto the striker, and the sear isn't dropping enough to let it fire. Now I am thinking of filing the sear (knowing our laws, I will probably go to jail for 20 years for doing this).

Anyone else got any ideas? I think I will just get the parts kit from wolverine and replace the whole fire control group.
Click to expand...

Don't mess with the sear or you may find the thing goes uncontrolable on you as soon as you let the bolt chamber a round. Don't alter the tab on the trigger either, it's there to stop unnecessary force being exerted on the linkage. When you get it fixed you will likely damage it again if you do this.

Downward pressure on the striker should not affect the operation of the sear. The striker rides on a rail machined into the reciever, it can not drop lower than the rail it rides on.

IF I were you I would dismantle the trigger mechanism completely and carefully inspect every part, it's an ingenious rifle but not a complicated one, it should be straightforward enough to fix. You never know, you might even learn more than is politically correct to know through this little exercise:)
 
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Good morning flobalob. I decided against filing the sear. I know what you mean about the striker riding on a rail. The problem for me is, there is alot of play when the striker is in the cocked position (up and down on the rail). This is what is causing me grief.

I am going to disassemble the trigger group. Now I just have to figure out which pin I pull first.
 
Throttle_monkey1 said:
Good morning flobalob. I decided against filing the sear. I know what you mean about the striker riding on a rail. The problem for me is, there is alot of play when the striker is in the cocked position (up and down on the rail). This is what is causing me grief..
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Morning T_m, The play in the striker is normal, the tollerance in the bolt carrier is the reason. It is held firmly against the rail when the cover is in position and locked down by the retaining pin. I would be surprised if the striker is the cause of your problem.

Throttle_monkey1 said:
I am going to disassemble the trigger group. Now I just have to figure out which pin I pull first.
Click to expand...

Good, please keep us informed.
 
You should also make sure you give everything a good spray with brake cleaner. When I got my VZ58 I was so eager to get it out that I only cleaned out the barrel and gas piston. The thing was misfiring and doing funny stuff the whole time I was out shooting. The problem turned out to an issue with heavy grease mucking up the little bits and pieces in the bolt area.
 
I spoke to wolverine supplies this morning and ordered a spare parts kit. I decided against taking apart the trigger group until I get the new parts, and will use those to "copy" the way it is setup now. Knowing myself I will forget how to put it back together.

You are right about the striker being held against the rail when it is assembled. The sear won't drop enough to allow the striker to be released. I disassemble it, and as soon as I assemble it, it does the trigger lock up thing. I have figured out what that is as well. The striker will not release, so it trips the disconnector, leaving the trigger useless until it is cocked again.
 
Well it looks like you have it narrowed down to the sear linkage and the safety switch, it could be that the safety is not disengaging properly. Take a look to see if the flat on the safety rod is horizontal ( uppermost) when the safety is in the off position.
 
Just wondering if anyone else had a Target included with the rifle,If they test fired these at the factory why the hell didnt they fix them properly?
 
I have a test target for mine but I can't figure out what it means. There is a touching cluster of shots to the left of what I would consider the aim point marked with a fine red +, you can hardly seeit, it looks like the + was there before the rifle was tested. There are three other shots but several inches away, above and below from the red +, sight adjustment, who knows ?

When I first shot my rifle, it shot about eight inches high at 100yds using Czech ammo, I have not had to adjust the windage. It's more accurate than I thought it would be.
 
What I meant was, If they were test fired at the factory, How could defective ones (with the trigger mech problem) be sold?
 
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