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Thanks to the Brickboard, Art and others, I was able to repair the large clock in my 93 240. I followed the repair steps as described in the link below (and links refered in that thread).
http://www.brickboard.com/RWD/index.htm?id=1222581&show_all=1
As noted in the link – I removed the clock from the instrument panel, removed the clock face, de-soldered the ground lead, removed the clock works, de-soldered the old capacitor, soldered in a new one, reassembled and reinstalled and it works, simple as that (well almost – noted below some tricks I learned along the way).
Here is some supplementary info for those of us that don't get to solder everyday:
1. I couldn’t find the exact same capacitor (radio shack was no help), however a local electronic repair store sold me all materials for < $5. I used a 100 uF that was rated for 35 volts. Apparently that is ok, just need to match the uF and be at least the min V required.
2. My large clock had only one capacitor.
3. Use a very small dab of rosin on the de-soldering wick, other wise you could use welding torch and still not get the solder to wick up (AMHIK).
4. It would have helped to have the clock works clamped in a small work vice so it wouldn’t slide around on the work bench.
5. Also used a micro dot dab of rosin when re-soldering, even w/ rosin core solder it just made it go so much faster and cleaner. Wiped every thing clean w/ some isopropyl alcohol.
6. The leads were not marked on the NTE replacement capacitor, however their web site tech info labeled the longer lead as positive.
http://www.nteinc.com/capacitor_web/pdf/nev_neh.pdf
7. After reassembly the clock still did not work! The gear rotated, but kept getting stuck. After several minutes of head scratching and puzzled thought, I took out my o-ring scribe and very carefully flossed between the teeth of the motor drive gear and the first gear out. Sure enough, one tooth had a very, very small piece of debris, almost too small to see, but it was enough to jam the gear. Not sure if this was what caused the clock to fail or if it got there during the repair process.
Whoa - its time for lunch!
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