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  #1  
Old 02-25-2003, 03:04 PM
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Clock stops when very cold.

Has anyone noticed that the clock (analog) in the 85 300 D stops working when it is very cold @ night. It seems to work alright when it warms up a little. This is the 1st year I've noticed it.
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  #2  
Old 02-25-2003, 03:09 PM
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My '80 240D does the same.
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  #3  
Old 02-25-2003, 03:24 PM
Jim B+
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As does mine...

Runs well in the summer...another of my hobbies is timepieces, and the fact is that after 20 years analog clocks need to be cleaned, or at least to have their resistors changed...do a seach, there are some posts on this.

One reason I prefer the 240 to the 300, etc., is I like the very legible clock, and find it more useful than the tach/clock on the "better" diesels.

I've also posted recently about how to pull the instrument cluster...with a mind to trying to get my clock to work, send it for a cleaning, or do an exchange.

Best of luck
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  #4  
Old 02-25-2003, 03:48 PM
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Clock

Thank you. I'll do it... But, I'll wait till spring!
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  #5  
Old 02-25-2003, 04:01 PM
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Last night was the first time mine did this. Funny that you bring it up.

It was so cold out there that I would have stopped working as well.

Don
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  #6  
Old 02-25-2003, 05:57 PM
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My clock did this as well (small clock in clock/tach combo). I thought it was the mechanism (i.e., gears) but the culprit are the two capacitors that have a degrading dielectric.

You can get replacement capacitors from radio shack (higher voltage rating), and it is an easy fix with the instrument cluster taken out of the car.

After the repair, the clock will again work in all temperature ranges.
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  #7  
Old 02-26-2003, 08:54 AM
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I agree with Jim B+. Last year I replaced the capacitors in my clock after it had stopped working. I followed the directions that I found here, they were great. After reinstalling the cluster back into the dash, the clock did not work. I took it apart again and noticed that the linkage from the knob to the clock was sticking, the spring would not allow the gears to uncouple. I cleaned the assembly up and the clock has worker flawlessly since. Take the time to clean the linkage as long as you already have the clock out. I think the capacitors at Radio shcak cost about $1.00 each.

Tom
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  #8  
Old 02-26-2003, 10:25 AM
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Clock

Tom-
Could you give me a little more info on these capacitors. What do they look like? Are they in the clock and is it difficult to get at them... I'll have no problem removing the dash etc.
Thanks.
Ed
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  #9  
Old 02-26-2003, 12:42 PM
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Ed, I found this in the archives: http://business.baylor.edu/Richard_Easley/autofaqs/clock.htm
It describes the procedure. The capacitors are small cylinders with a wire on each end. They were located on the back of the clock assembly, easily accessible. Follow the directions in the thread. I hope this helps.
Tom
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  #10  
Old 04-20-2008, 02:36 AM
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Link update

Quote:
Originally Posted by Tom Sweeney View Post
Ed, I found this in the archives: http://business.baylor.edu/Richard_Easley/autofaqs/clock.htm
It describes the procedure. The capacitors are small cylinders with a wire on each end. They were located on the back of the clock assembly, easily accessible. Follow the directions in the thread. I hope this helps.
Tom
The above link no longer works. Anyone know another place with this information?
Charles
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  #11  
Old 04-20-2008, 08:21 PM
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http://articles.mbz.org/instrument/renew/

Scroll down the page and it has the capacitor number. My clock worked on the bench and I can hear it clicking in the dash after replacing them, but it still does not keep time. I'll try cleaning the mechanism like was mentioned above.

John
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  #12  
Old 02-26-2003, 01:13 PM
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clock

Tom, thats terrific! Thank you very much.
Ed
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  #13  
Old 03-05-2003, 01:58 PM
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J. Scott Moncrief
 
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The FRAKO is the stock capacitor 16v/100microFarad
The Radioshack is a 35v/100microFarad

Richard Easley's procedure will get you there. Lubricate the reset pinions while you're in there.
Attached Thumbnails
Clock stops when very cold.-clockcapacitors.jpg  
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1989 560SL 111Kmi
2007 E550 4Matic 157 Kmi
2000 F250SD 7.3l, 1996 Explorer Ltd 5.0l
1965 VW Beetle Deluxe 115 Kmi
=========================
Previous MB:
1983 240D Euro Manual 144 Kmi
1983 300SD 495 Kmi
1986 190D 2.5 100 Kmi
1986 300SDL 202 Kmi
1991 300D 2.5 Turbo 91 Kmi
1998 E320S4 (4-matic wagon) 140 Kmi

Last edited by rivermasternc; 10-27-2003 at 11:26 AM.
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  #14  
Old 03-05-2003, 02:00 PM
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J. Scott Moncrief
 
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Radio Shack capacitors (black) installed:
Attached Thumbnails
Clock stops when very cold.-1983_300sdclock.jpg  
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https://goo.gl/photos/J8ZUVvAYiYqLxbD18

1989 560SL 111Kmi
2007 E550 4Matic 157 Kmi
2000 F250SD 7.3l, 1996 Explorer Ltd 5.0l
1965 VW Beetle Deluxe 115 Kmi
=========================
Previous MB:
1983 240D Euro Manual 144 Kmi
1983 300SD 495 Kmi
1986 190D 2.5 100 Kmi
1986 300SDL 202 Kmi
1991 300D 2.5 Turbo 91 Kmi
1998 E320S4 (4-matic wagon) 140 Kmi
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  #15  
Old 03-05-2003, 02:31 PM
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Now, if we just had a clock that did not stop when we take the car battery out.....
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