Not Resetting in SA

[ES13Raven]

I have a CZC SP01 Shadow Custom 91030, and I just installed a new Flat Safety set.  I replaced the sear with the Cajun Adjustable Sear to make fitting the new Safety easier.

I re-assembled everything, and now:

• DA functionality test good.
• SA functionality test good.
• New Safety functions correctly.
• If I pin the trigger in DA, hammer will not stay back if I manually cock it again.
• If I pin the trigger in SA, hammer will stay back - but will not fire again, and stays cocked.

Is this a Disconnector issue?

I believe the Shadow Custom has the Drop in Pre B Short Reset Disconnector.  Do I need a different one?

What else should I check?

[tdogg]

I'd check the triggerbar spring is in the grooves and adjusted properly.  You want it to have upward tension on the right side and minimal upward tension on the left side.

Cheers,
Toby

[ES13Raven]

A better description of what is happening is the trigger is dead on SA after cycling the slide (testing reset). The trigger has full SA range of motion, but will not drop the hammer. If I then cock the cocked hammer again, I hear a click and the SA works again.

I spoke with David @ CGW, and he thinks it is the trigger bar support spring.  I followed the tutorial directions on the website, but the issue did not go away. I took the sear cage back out and the trigger bar seems to have plenty of upward spring pressure.

I just noticed that the SA trigger position is now right at the wall.  Before it had a few mm of pre-travel before you hit the wall.

I still think the new sear isn't playing well with the Pre B Short Reset Disconnector.

[cjfung10]

If you've confirmed it's not the trigger bar support spring, I would test your theory with a factory disconnector. Do you have one? If not, I can send you one such that you can make sure it's your disconnector before you start fitting anything. I would guess that the disconnector not letting your trigger bar fully forward to reset so your sear re-engages the hammer.

Is the sear spring installed correctly?

[SoCal]

I have a CZC SP01 Shadow Custom 91030, and I just installed a new Flat Safety set.  I replaced the sear with the Cajun Adjustable Sear to make fitting the new Safety easier.

I re-assembled everything, and now:

• If I pin the trigger in DA, hammer will not stay back if I manually cock it again.
• If I pin the trigger in SA, hammer will stay back - but will not fire again, and stays cocked.

What else should I check?

None of my CZ's (all steel frame full size) am I able to cock the hammer manually WITH the trigger pinned to the back, not sure I understand what is happening.  The only way to cock the hammer with the trigger pinned to the rear is by racking the slide.  What am I not understanding?

[schutz85C]

"I still think the new sear isn't playing well with the Pre B Short Reset Disconnector."



My 85C has the CGW race hammer,adjustable sear and short reset disco.

No problems.
DA and SA work fine.

I would disassemble again and use the kneeling atlas tutorial for re-assembly.
Maybe its just a fluke thing that was not assembled correctly.

good luck!!

try this
https://czfirearms.us/index.php?topic=117529.0

[ES13Raven]

I got this figured out. The new CGW sear changed the geometry and some fitting of the disco was needed. I didn't want to modify the Pre B disconnector, so I ordered the RRK from CGW.

It took me several passes with a Dremel and a diamond wheel point attachment, but it now resets reliably in SA.

I put the stock sear and disco back in to check the differences in pre-travel, reset distance etc. I thought I would be able to get the reset shorter by hand fitting the disco, but they are exactly the same. CZC does a great job with the Shadow Customs on short reset.  The only advantage I see with the RRK is the DA take-up can be minimized with the additional set screw in the trigger.