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Discussion Starter #1 (Edited)
Anyone who wants to learn how the hammer block and decocker safety features of the PP-series pistols work needs only to read the Instruction Manual that was shipped with each Walther, Manurhin and Interarms pistol. There is a series of excellent schematics (in color, in the earlier German manuals) that illustrates how all the parts interact with each other.

Similar schematics appear in manuals for the P.38 and P4 and P5 pistols. They are very useful in understanding the mechanisms.

The drawings do not explain how to effect repairs or fit replacement parts if the decocker doesn't work because that is a job for an experienced gunsmith. The internal decocking lever is where some of the manufacturing tolerances between the frame and slide are reconciled, through selective fitting of different sizes of levers, and if this adjustment is gotten wrong, the "timing" of the gun is affected and a dangerous condition can result.

I don't know how much if any of the above applies to the S&W guns or their manuals (and couldn't care less). The incorrigible gamblers among us will have to figure that out for themselves.

M
 

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It might be helpful for someone to scan and publish this description for those who do not have access to an older manual.
 

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Pre-war Commercial? Walther PP hammer block

My Pre-war Commercial? Police? (Waffenfabrik Walther PP Zella-Mehlis (Thur), Walthers Patent Cal 7.65 m/m Mod. PP) - hammer block "hole" is just that, a hole. It does not have the "extra" cut on the left side of the hammer block recess for the spring and plunger. Does anybody have any idea what the part should look like on such an old Walther PP? Pictures? Sources? Thanks for any help, as I am stuck without and I can testify, the pistol NEEDS it! Regards!
 

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Early Variation 1 PP Hammer Block & Spring

Yes, Smaug! That is like my 1st Variation PP, serial 754,000. The hammer block is a little metal piece, sprung downward in place with a small circular spring. I attach a reprint from Dieter Marschall's Walther Book, showing the parts involved. Best to you! DesertDave
 

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"C" spring and hammer block

Yes, Smaug! That is like my 1st Variation PP, serial 754,000. The hammer block is a little metal piece, sprung downward in place with a small circular spring. I attach a reprint from Dieter Marschall's Walther Book, showing the parts involved. Best to you! DesertDave

If there is any way to get detailed pics and measurements of the 2 parts, (on graph paper with fine gradients and a legend as to the scale???), I would very much appreciate them. The block MUST be different from the following variations because firstly it does not have the plunger/spring recess, and because it might have a specific way, or notch or something, to interact with the "C" spring. Any help would be sincerely appreciated. Thanks! Smaug
 

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I don't have the detailed drawings, but they must be around. YES, both the Hammer Block & Spring are unique to Early PP.

My gunsmith lost or misplaced my c-spring during a servicing of the pistol. I am working on obtaining a replacement original....Once I have that, we can talk to Olle Fornehed in Tennessee about making the two parts, as these are scarce as hen's teeth. (Olle refers to these are as being made from "UNOBTAINIUM"! :) Olle has done a lot of small parts, including disconnector for CZ-38....More as I know it...Dave
 

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Sounds GREAT! I still intend to see about manufacturing the two parts...But knowing that Tom or Kurt Whitman have the needed parts is a real relief...Good job, Smaug! DD
 
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