Author Topic: Changing firing pin and firing pin block springs. Having problems again  (Read 1757 times)

0 Members and 1 Guest are viewing this topic.

Offline rjinaz85308

  • Jr. Member
  • **
  • Posts: 34
I removed the roll pin and change out both springs.  put it all back together and it will not shoot a pencil out of the barrel.  Removed the roll pin and it works fine.  I have reinstalled several time and same results. With the slide off and the firing pin in position I inserted a slightly smaller punch in the roll pin hole.  The firing pin barely protrudes out the back of the slide.  I can push the firing pin with a punch from the rear and it will extend past the breachface, but as you can see with no pressure other than the firing pin spring it does not seem to stick out enought for the hammer to make contact.  This has to be something really stupid as it ain't rocket science.

« Last Edit: June 12, 2016, 05:16:09 PM by rjinaz85308 »

Offline 1SOW

  • Hero Member
  • *****
  • Posts: 15006
  • GO GREEN - Recycle 9MM
Your punch may be hitting the FP if the flat is not UP and aligned with the hole.  Rotate the FP until the flat is up and the Punch goes all the way through, then use the pin to push the punch back out so everything stays aligned.
Follow this stickies procedure ... Mostly
?.http://www.czfirearms.us/index.php?topic=14696.0
« Last Edit: June 12, 2016, 08:53:44 PM by 1SOW »

Offline rjinaz85308

  • Jr. Member
  • **
  • Posts: 34
I got it all back together and the firing pin moves freely, but it still looks just like the pics.  Have no way to test fire though

Offline eastman

  • Hero Member
  • *****
  • Posts: 3799
I got it all back together and the firing pin moves freely, but it still looks just like the pics.  Have no way to test fire though

Pencil Test FTW!

Drop a standard pencil eraser end first into the barrel, point upwards and pull the trigger. If the firing pin will hit the primer with enough force, it will also be enough force to launch a pencil.
I don't look like my avatar!

Offline 1SOW

  • Hero Member
  • *****
  • Posts: 15006
  • GO GREEN - Recycle 9MM
Glad you got it back in.  If the FP bounces a pencil (with eraser down) when struck with the bbl.pointed up,  then it should work OK.
Let us know how it shoots.

Offline Joe L

  • Hero Member
  • *****
  • Posts: 7382
The end of the firing pin will be nearly flush with the back of the slide.  I just went through this with  75B 9mm slide.  With a factory firing pin and firing pin spring and a roll pin retaining pin, with the barrel horizontal, and a well worn 17# hammer spring, a pencil will launch about 2-3 feet out of the gun.  However, it was this way with a P-07 and P-09 (with light hammer springs) also, and all fire fine with normal primers. 

It is easy to bugger up the firing pin with the retaining pin if it isn't pushed in flush when you drive the pin in.  All you have to do, assuming the pin is not bent, is clean it up with a fine file. 

Make sure you use a pencil with a flat eraser.  A rounded one may not get hit hard enough because the pencil isn't centered in the bore, with the barrel horizontal.  I never tried it with the barrel vertical, but that isn't a bad idea. 

Joe
CZ-75B 9mm and Kadet, 97B"E", two P-09's, P-07, P-10C, P-10F, P-10S, MTR