Author Topic: VZ08 trigger and Gremlin fix.  (Read 23532 times)

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Offline RSR

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Re: VZ08 trigger and Gremlin fix.
« Reply #30 on: January 13, 2015, 02:55:20 AM »
I need to clarify a previous misunderstanding regarding sear/disconnector function:

The right sear is connected exclusive to the "in battery" lever.  This sear goes down when the bolt carrier is in battery.  This sear is controlled, in entirety, by that lever.  This ensures that the weapon cannot fire out of battery (and also ensures striker is held back until the bolt carrier and bolt are in battery so that light strikes don't occur like w/ the gremlin).
Since that hole isn't centered (the one in front, where lever connects to the sear), it lowers when lever is pushed down and rises when the lever rises


The left sear interacts w/ both the left (semi auto w/ the hump) and right (full auto w/o hump) disconectors.  This controls what the striker does when you pull the trigger.  Trigger pulled, striker releases...  Granted, with semi auto, the bolt carrier crossing semi auto disconnector requires you to re-pull the trigger w/ each shot, thereby releasing and resetting the trigger.



Here is the left disconnector (semi auto) OE from full auto FCG.  You can see the ramp towards the rear that allows it to slide by the sear when you release trigger and the front edge that grabs the sear to trip it w/ each trigger pull:


Here is the right disconnector OE from full auto FCG -- I'm not entirely sure about the function of that front ledge but the sear appears to sit between that and the rear portion which is what grabs the sear and serves to pull it forward (note no angle as it is never forward of sear and needing to slide past).  Best guess right now, is that it is a safety function to push/hold the sear up when trigger isn't pulled to avoid runaway full auto...  And that foward nub would likely work in both semi and full auto modes based upon its location.   Also, being located between the two sears, I think this disconnector plus that forward nub helps to keep the sears and disconnectors in proper alignment. 

Here's what the left OEM sear looks like, the rear of that lowermost protrusion (as pictured) is what the disconnectors pull on to lower and release this sear:


And with the disconnectors, when the safety is engaged, it pushes them to the floor of the receiver.  So that angle cut would lay flat against the bottom of the receiver when the safety is engaged or not in respective fire mode...
« Last Edit: January 13, 2015, 03:20:55 AM by RSR »

Offline CitizenPete

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    • Universal Machine Gun Model 59 (UK Vzor 59)
Re: VZ08 trigger and Gremlin fix.
« Reply #31 on: March 10, 2015, 05:24:45 PM »
Google translate "ALL CAPS" mine:

Zendl
Modified shutter rod with a circuit for CZ 858 Tactical CZH 2003 Hermex, FSN 01

Modified shutter rod (DISCONNECTOR?) with a circuit (?) designed to help reduce firearm malfunction "Padania derníku" (ie. Hermex effect) (GREMLIN?). Defect manifests that after the shot is a new cartridge in the chamber, but the firing mechanism is not tight and not so possible to shoot. On zápalce charge is faintly firing pin (DIMPLE ON PRIMER FIRING PIN?). Adherence to this defect have basically all original automatic weapons Sa vz 58 converted to semi-automatic weapons CZ 858 Tactical, CZH Hermex 2003, the 1st FSN It is due to the mechanisms of self-loading, removing components providing a self-shooting mode, thus changing the function of this mechanism. Using a modified shutter rod interrupter is also possible to achieve lower-trigger using the trigger with adjustable trigger overtravel also shorter trigger travel (SHORTER TRIGGER RELEASE AND PULL?). Before installation, carefully read the installation instructions.

Only malobchodní (???) sale
2-year warranty from the date of sale
Price without VAT - 1325 - CZK  (APPROXIMATELY $50  + SHIPPING)



Zendl
https://translate.google.com/translate?hl=en&sl=cs&tl=en&u=http%3A%2F%2Fwww.zendl.cz%2Findex.php%2Fproduscts%2Fdoplnkysa58%2F118-vypousteni-zaveru-58
« Last Edit: March 10, 2015, 05:36:19 PM by CitizenPete »
CP

The post above is opinion, and I am probably totally wrong, so please pardon me if I offend anyone in any way. I am speaking only for myself and just sharing my thoughts, not trying to start an argument with anyone, and if you disagree with anything I have said, I concede your correct.

Offline GrendelGene

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Re: VZ08 trigger and Gremlin fix.
« Reply #32 on: June 18, 2015, 09:23:38 PM »
Does anybody speak enough Czech to order these???   

Offline CitizenPete

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Re: VZ08 trigger and Gremlin fix.
« Reply #33 on: June 22, 2015, 10:57:50 AM »
Does anybody speak enough Czech to order these???

Email them.  I have placed orders with them with no issues.  Just get your quote in USD.
CP

The post above is opinion, and I am probably totally wrong, so please pardon me if I offend anyone in any way. I am speaking only for myself and just sharing my thoughts, not trying to start an argument with anyone, and if you disagree with anything I have said, I concede your correct.

Offline GrendelGene

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Re: VZ08 trigger and Gremlin fix.
« Reply #34 on: June 22, 2015, 12:28:41 PM »
done!

Offline gumijagr

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Re: VZ08 trigger and Gremlin fix.
« Reply #35 on: December 26, 2015, 04:32:50 AM »
I have a Assault weapons of ohio Receiver, I believe they are the ORF type receivers, Looking for the Trigger Sear and Disconnector, will this disconnected work ?
 also which sear should I use and trigger?
 Thanks for the help and time!  8)

Offline CitizenPete

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Re: VZ08 trigger and Gremlin fix.
« Reply #36 on: December 26, 2015, 10:53:09 AM »
I have a Assault weapons of ohio Receiver, I believe they are the ORF type receivers, Looking for the Trigger Sear and Disconnector, will this disconnected work ?
 also which sear should I use and trigger?
 Thanks for the help and time!  8)


Are you trying to replace or upgrade an existing FCG or fix a non-functioning set?   The FCG in the OOW vz2000 includes a sear spacer. You can contact OOW and ask about replacement parts, if that is what you need.  I do not know of a compelling reason to install the Zendl disconnector, unless you are not tabbing (adding push down plate) the carrier.

One question: What info do you have that would lead you to believe that the receivers on the OOW vz2000s came from ORF?
« Last Edit: December 26, 2015, 10:55:11 AM by CitizenPete »
CP

The post above is opinion, and I am probably totally wrong, so please pardon me if I offend anyone in any way. I am speaking only for myself and just sharing my thoughts, not trying to start an argument with anyone, and if you disagree with anything I have said, I concede your correct.

Offline gumijagr

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Re: VZ08 trigger and Gremlin fix.
« Reply #37 on: December 26, 2015, 04:18:53 PM »
I just read that the (Assault Weapons of Ohio) Receivers were ORF Receivers that they bought up When I believe it was Todd passed away.
 I am just trying to get a working FCG into that receiver. Its the type with the original "She 6_ "  A  40108  stamping on them.
  I bought a US trigger and wide Sear but used the original disconnector and it binds instead of pushing down easily.
 I know they use to sell a U.S. 922r compliance kit with these a while back, and not sure what I need to make this run correctly.
 Thanks for the help and time!

Not sure if I can ad picture with only 2 posts but I'll drop it here to see:

/Users/gumijagr/Desktop/ORF_Compliance_Parts.jpg
« Last Edit: December 26, 2015, 05:55:16 PM by gumijagr »

Offline CitizenPete

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Re: VZ08 trigger and Gremlin fix.
« Reply #38 on: December 26, 2015, 09:36:52 PM »
I just read that the (Assault Weapons of Ohio) Receivers were ORF Receivers that they bought up When I believe it was Todd passed away.
 I am just trying to get a working FCG into that receiver. Its the type with the original "She 6_ "  A  40108  stamping on them.
  I bought a US trigger and wide Sear but used the original disconnector and it binds instead of pushing down easily.
 I know they use to sell a U.S. 922r compliance kit with these a while back, and not sure what I need to make this run correctly.
 Thanks for the help and time!

Not sure if I can ad picture with only 2 posts but I'll drop it here to see:

/Users/gumijagr/Desktop/ORF_Compliance_Parts.jpg


I totally misread your previous post.  My mistake.  I am unfamiliar with "assault weapons of Ohio" firearms.  Perhaps you can post a pic of the receiver internals or the FCG.
CP

The post above is opinion, and I am probably totally wrong, so please pardon me if I offend anyone in any way. I am speaking only for myself and just sharing my thoughts, not trying to start an argument with anyone, and if you disagree with anything I have said, I concede your correct.

Offline RSR

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Re: VZ08 trigger and Gremlin fix.
« Reply #39 on: December 27, 2015, 12:30:01 AM »
AWO receivers are the same (or very similar) to the ones on the first gen VZ2008s.  Effectively, they are close copies of the dtechnic receivers...  I am not sure how they treat the internals however.  As I recall, you should be able to install all of the fcg OE parts kits parts, except for the the right disconnectors in battery lever.

This thread might be useful: http://www.theakforum.net/forums/14-general-discussion/38545-vz58-receivers-now-prebuy-group-buy-250-closed-55.html

The 922r kit that was originally sold:

Offline gumijagr

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Re: VZ08 trigger and Gremlin fix.
« Reply #40 on: December 27, 2015, 05:38:36 AM »
Thanks , CP
That was the picture I tried to upload, just cannot find those parts anywhere, I will keep searching:. still can't figure the picture upload, I will look into that,

 RSR : thanks for the thread I did read that earlier before my post, that was where I found that picture as well, just can't locate the parts, I just need the : Disconnector , Sear, Sear Pin,  Safety lock, and Trigger.
 I'll go back original I guess if I can't find them.

 I do have 1- 23049 trigger and 1- Sear from CNC Warrior but think I need the pictured parts instead
« Last Edit: December 27, 2015, 05:57:41 AM by gumijagr »

Offline RSR

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Re: VZ08 trigger and Gremlin fix.
« Reply #41 on: December 27, 2015, 04:28:12 PM »
Numrich should have the parts, and if not them then perhaps czechpoint or apex... 

Typically on these guns, 1-3 of the parts come through the FCG...  I would think if you're building from scratch w/ a kit (what I read into it), then the OE fcg parts should be there...  ORF/AWO aren't exactly known for precision w/ their receivers, so my point was to install OE first to check function, before you start trying to troubleshoot.

There are not exact US parts made to OE.  Bonesteel is probably easiest to source.  You might be able to talk czechpoint into selling them, but I wouldn't count on it as they only seem ot have any interest in supporting only those folks/weapons that were purchased from them/CSA/Dtechnic.

Offline gumijagr

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Re: VZ08 trigger and Gremlin fix.
« Reply #42 on: December 27, 2015, 09:58:01 PM »
Yea I know what you mean on them holding there own parts  , I am putting on the original parts first ,
 as you said to check function and go from there,
 trigger just disconnects when putting round into battery,
and bolt carrier rides back over disconnector
I think i need to file small amount off of sear so it can reset itself,
 then should be ok

Offline gumijagr

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Re: VZ08 trigger and Gremlin fix.
« Reply #43 on: December 27, 2015, 11:02:19 PM »
Actually just squared the trigger opening corners, that were slightly rounded, and trigger is good to go now disconnect  resets fine, just need safety lock to hold sear over and all will be fine again. Once I dropped all parts in I could see that pushing or trying to let trigger go after pull and have it snap forward it was just off a few .000 , light file in corners to square let it go by itself now , should be ready to test fire now, then I can park it and paint or may just leave it parkerized state.
 Great help on here !
 Thanks again for quick responses.
Hope this helps any one that has similar problem with these receivers, I know I saw another thread that said they opened up the trigger opening more, so I know it was
 another known issue, and Normally with your stock parts you don't have to file or cut etc. the original parts (if holes are at spec dimensions).
Receiver not being original would or should point you to fitment in that area first.
 Always check over and over, measure and read as much about your build before cutting welding or grinding, and ask others.
 You can always find help and others that may have had same problems  8)

Offline paskeCZ

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