P01 Lifter Spring Help

[Heero]

Hello all. Quick help real fast; I just reassembled my sear back together for the first time and it was sure indeed a challenge. I successfully installed a CGW Decocker and hammer spring. However, I noticed my lifter spring had a weird twist at the bottom of the loop. I wanted to ask; how would I know if my lifter spring is working properly without firing the gun? Is there a visual test I can do? Thanks, sorry I am still learning how the beauty of the CZs work. :-)

[Firemanjones]

Make sure the gun is unloaded, put a pencil in eraser first, aim to the sky and fire. If it goes up, the FP hit it and the spring moved the firing block out of the way.


Safety First

[cntrydawwwg]

This^^^^^^

[copemech]

WRONG! Remove slide and see if the lifter arm moves freely and springs back down!

The action moves it up, the spring takes it back down!

[Heero]

WRONG! Remove slide and see if the lifter arm moves freely and springs back down!

The action moves it up, the spring takes it back down!

Yeah it's definitely not doing this, so I think either the spring is indeed bad or I installed it wrong. Thanks!

[Heero]

Actually I notice that it springs back sometimes and sometimes it'll just stay up. Is it supposed to be 100% springing back everytime you pull it back? Thanks.

WRONG! Remove slide and see if the lifter arm moves freely and springs back down!

The action moves it up, the spring takes it back down!

Yeah it's definitely not doing this, so I think either the spring is indeed bad or I installed it wrong. Thanks!

[Tok36]

A picture for reference. Edit: Yes the lifter arm should always spring towards a fully down position. EDIT: This is a pictue of a safety model and inaccurate for a P-01 (decocker). Please see post#11 for an accurate pic.

[Heero]

Gotcha. I just ordered a few spares from CGW. Hopefully I'll have some fun changing it out. Have you ever change out the lifter spring without removing the entire sear? I think I will attempt to do it with the sear still in the gun. It would suck to reassemble the entire sear again lol.

A picture for reference. Edit: Yes the lifter arm should always spring towards a fully down position.

[Tok36]

As can be seen in the picture i posted, you can back out the sear cage pin just enough to make space for the lifter arm to be removed and replaced without disturbing the sear. It can be a tight fit.  Edit: this is accurate for a safety model, but inaccurate for a decocker. For decocker options please see post#11.

[Heero]

Thanks. I'll give this a try once my new spring comes. I appreciate the help.

As can be see in the picture i posted, you can back out the sear cage pin just enough to make space for the lifter arm to be removed and replaced without disturbing the sear. It can be a tight fit.

[cntrydawwwg]

WRONG! Remove slide and see if the lifter arm moves freely and springs back down!

The action moves it up, the spring takes it back down!

  Doesn't make the pencil test wrong, just a different way. Even if the lifter arm springs every time, the pencil test is a good way to test for function without firing.

[BDG]

IMG_1316 by bdgcz75, on Flickr

Here is the P-01 ejector/sear cage assembly. The way I see it you will have two options, 1. Perform the replacement will the assembly is in the pistol or 2. You can use  a slave pin to push out the sear spring pin and remove the assembly.
If you leave the assembly in the pistol the FPB Lever and Lever spring will be the first parts cleared by the removal of the sear spring pin so you will not have to push it very far.
There are some pretty good images of the P-01 disassembly in the CZ Gunsmithing section. 

[Firemanjones]

  Doesn't make the pencil test wrong, just a different way. Even if the lifter arm springs every time, the pencil test is a good way to test for function without firing.

THAT IS CORRECT!

[Tok36]

Thanks. I'll give this a try once my new spring comes. I appreciate the help.

As can be see in the picture i posted, you can back out the sear cage pin just enough to make space for the lifter arm to be removed and replaced without disturbing the sear. It can be a tight fit.

Heero, Listen to what BDG is saying. I showed you a picture if a Safety model. Ya it was late..... The assembly is different on a decocker, the pin that holds the sear cage together goes through the frame (as you may have noticed working on your pistol) . On a safety modle the pin is shorter and only goes through the sear cage. Now i understand your question about leaving the sear in the gun.

[CZTom]

Sometimes, the entire sear cage can be assembled correctly, but the upper portion of the firing pin block lifter spring can "slip" out of position, over the recessed portion of the lifter arm (i.e.: be out of place).  Sometimes, using a dental pick or something like that, you can pull the upper portion of the lifter spring back into it's proper place on the side of the lifter arm.  If so, and the lifter arm always returns downward after you pull the arm up and release it, it should be okay, as others have said.