Been trying to restore one of these clocks for my car for the better part of 6 months, found that all of them i could find had one gear missing, a brown gear that acts as the main drive gear
TLDR found one in a clock and was able to measure it before it fell apart and made one
This model is made to be resin printed because it has to be at a small scale, should be scaled to roughly 6mm across
Model : https://www.thingiverse.com/thing:6974519 (https://www.thingiverse.com/thing:6974519)
Nice. Does the rest of the mechanism appear to be kinda gummy when you find them with these failed gears? I'm just wondering that is a contributing factor to that gear failing. This being the 'digital' clock I suppose there is quite a bit of stress on the hour where every drum has to turn so a constant loading and unloading of stress.
Others can answer but I would guess the same clock was used in all the models since dash was more or less the same even in the Seville. Not sure when they went to a quartz movement or if that changed that gear setup.
@TJ Hoplandsorry just now seeing this, i have a revised model i posed recently i think
but no, usually when i find the clocks they are in good condition and rarely anything gumming them up. I put some clock oil on all of the joins and gears to make them run smoothly and they all seem to run perfectly
As far as I've found, they switched to quartz in 79, but i could be wrong on that, i know that's when they changed the overall design of the clock
On a side note, seeing this thread made me remember the clock in my 71 Deville. I looks awesome sitting over there on the passenger side of the dash, but completely non-functional. I'll start looking around for someone that can restore it.
Several clock restoration places out there, including Instrument Services, https://www.clocksandgauges.com/
Instrument Services will repair your clock (and gauges) or convert it to a quartz movement. The have "quartzed" two clocks for me to my complete satisfaction and also sold me the kit to quartz a 1968 Bonneville clock myself. Quartz movements last a long while and keep excellent time.
Instrument Services restored/repaired my 1935 Cadillac clock but were not able to put a quartz movement in it because of the small size space for the movement. I put an on/off switch on that one to improve its longevity, but they rarely run very long before again needing repair.
D&M restoration is another well known restorer.
https://dandmrestoration.com/services/clocks/