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  #1  
Old 04-18-2011, 05:38 AM
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W114 Odometer problem

My speedo is working properly on my W114 230, however, the odometer is not working.
I have disassembled the speedo and I found that the gear made of zinc is not rotating with the copper gear as shown in the photo. Can anyone tell me how to fix it?

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W114 Odometer problem-dscn2345.jpg   W114 Odometer problem-dscn2344.jpg  
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  #2  
Old 04-18-2011, 10:30 AM
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This is a common problem due to gear slipping on shaft. Do a search on the forum and you'll find a variety of approaches of how to fix that ranging from glue to crimping shaft.

Been there, done that, on my old 250C too

Good luck,

Bert
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  #3  
Old 04-18-2011, 04:28 PM
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I used green Locktite on mine, it's a wicking grade that does not require disassembly. I did slide the gear over a bit, apply the Locktite and slide it back because I was concerned that it wouldn't flow into the gap well. It held for the 3 or 4 years that I had the car after that.

Michael
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Old 04-18-2011, 10:40 PM
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Please check the photo see if this is what you mean? Thank you very much!!!
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  #5  
Old 04-19-2011, 02:47 AM
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You've got the right idea.

You need to keep the Locktite away from anything that needs to turn freely.

I don't remember exactly what I did but I think I slid the shaft in the direction you show just enough to get the die cast gear off and then roughed up the shaft with needle nose pliers. I wanted the Locktite to have a better chance to grab the shaft so I just kind of abraided it rather than chewed it up.

I applied a tiny drop of Locktite with a toothpick, you don't want much since it could wick into places you don't want it to go. After that, it was a matter of putting it together, adding a drop of oil to the end of the shaft where it rides in the end of the frame to keep the Locktite from bonding it in case I got too much on it and then letting it sit overnight.

You can find another method by Googling "vdo odometer repair" and picking the hit that refers to Porsche odometers. Do not post a direct link to this method due to forum rules.

Michael
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Current have, 1983 300SD 126.120
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  #6  
Old 04-19-2011, 04:28 AM
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Thank you so much! I will give it a try again.

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