Hi, folks -

I've got a '74 240D with a temperature-dependant problem.

The mechanical Odometer in my 240 ceases operation when the gauge warms up
it seems (either due to cabin heat or outside temperature).  Speedometer is
fine in all temperatures.
I've had the gauge out once, but being not terribly knowledgeable on
Odometer Repair I couldn't find anything obviously wrong.  I noticed a
combination of plastic or nylon and metal gears (helical and pinion) and
even noted the original 31 year-old grease still somewhat evident on some of
the gearing assemblies.  All in all, everything appeared to the naked,
inexperienced eye to be clean and tight.

I've got the gauge cluster removed once again (as the car is back in storage
due to Winter's Return here in Detroit) and am ready to look for a local
shop that can repair it, but thought I'd ask the kind folks here on
alt.auto.mercedes if anyone's encountered this before and if so, what their
remedy was.

Thanks much in advance for anyone's assistance,

- Bill