The Clock in the Instrument Panel - Mercedes-Benz Forum
 
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post #1 of 8 (permalink) Old 06-22-2019, 06:11 PM Thread Starter
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The Clock in the Instrument Panel

Does anyone know if the clock in the instrument panel has a modern continuous movement or is it the old fashioned elctro-mechanical type that pulses a small solenoid/motor to wind a small mainspring?

I am asking because I am getting a periodic current pulse of about 20 mA (over the steady sate current draw of about 11 mA) every few seconds on fuse circuit 9. I've been trying to think of what it might be and the best I could come up with is that it might be the clock if it is the elctro-mechanical type. Does anyone have any thoughts as to what else it might be? Mostly just curious as all seems to be well with the car's electrical system.

Thanks!

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post #2 of 8 (permalink) Old 06-23-2019, 02:36 AM
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You could pull out the nob that adjusts the clocks time, and put a scotch under the nob to stop the nob going back in this will stop it running then check you voltage drop. I know the clocks have a coil inside . And there is a way to repair them if they fail .

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post #3 of 8 (permalink) Old 06-25-2019, 05:48 AM
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I've wondered about this myself for yrs. It's a decent movement because they keep very good time. I've never had to adjust one for fast/slow problems.....I'm sure someone has a cluster lying around and could peek at it.

Kevin
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post #4 of 8 (permalink) Old 06-25-2019, 09:27 AM
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clock

Kev go to you tube and in the search box put this - How to Repair a Mercedes W124 Electric Clock

Sorry no good at links .
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post #5 of 8 (permalink) Old 06-25-2019, 03:55 PM
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It ticks...that probably answers your question

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post #6 of 8 (permalink) Old 06-26-2019, 03:26 AM
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FLOBY did you check the clock out on youtube?

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post #7 of 8 (permalink) Old 06-26-2019, 07:47 AM
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Yes they are the pulse type.

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post #8 of 8 (permalink) Old 06-26-2019, 12:49 PM Thread Starter
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Quote:
Originally Posted by plinker17722 View Post
FLOBY did you check the clock out on youtube?
Yes, I just did and you can see the pulse solenoid in the mechanism. Thank you!

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