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Mercedes W123 key head repair

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  1. Mercedes W123 key head repair, Original state: crwdns2935265:01crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Mercedes W123 key head repair, Original state: crwdns2935265:01crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • In my case, the original cast key head tore and is therefore no longer stable, which made it somewhat impractical to use.

  2. Mercedes W123 key head repair, Uncover key: crwdns2935265:02crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Mercedes W123 key head repair, Uncover key: crwdns2935265:02crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • In the first step we need to remove the old potted key head. This works best with a sharp knife (cutter knife)

  3. Mercedes W123 key head repair, Push the key into the key head: crwdns2935265:03crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Mercedes W123 key head repair, Push the key into the key head: crwdns2935265:03crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Now we take the new key head and insert the key.

    • If it's a bit difficult to get in, you can press down with something flat, like a slotted screwdriver.

  4. Mercedes W123 key head repair, Optional fastening wedge adjustment: crwdns2935265:04crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Mercedes W123 key head repair, Optional fastening wedge adjustment: crwdns2935265:04crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Mercedes W123 key head repair, Optional fastening wedge adjustment: crwdns2935265:04crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • If your key, like mine, is not straight but semi-circular, the fastening wedge must be adjusted. See Figures 2 and 3 for this

  5. Mercedes W123 key head repair, Insert fastening wedge.: crwdns2935265:05crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
    • Now we are at the last step and it is very simple. Because you only have to insert the fastening wedge and the key head renewal is complete

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I hope this guide has helped you.

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Migi

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Hello, I just wanted to mention this for anyone who wants a more permanent solution for the key. I always have problems with this key blanks breaking so i ended up finding someone who mills out a Metal key blank for the w123. They started selling them on eBay and are solid. I've had one for about 4 years with no issues. I'll add the link as a comment for anyone who wants one. I apologize for the weird looking link. I had to use a link shortener in order to fit it all in one comment.

https://rb.gy/6q0fd

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