VDO quartz clock repair using new "60x8 toothed gear for VDO dashboard clock (watch) for Porsche Mercedes"

[coupesport]

Yesterday I opened my impaired/noisy E9 Quartz clock and found that initial gearwheel off of the motor had fell off its foot mounting hole. The tiny fragile "foot" had broken off.
I searched our forum and found that @Sean Haas had found a replacement source (!!!) and discussed it in an E3 Clocks thread (https://e9coupe.com/forum/threads/e3-clocks.38190/post-359906).

Sean's ebay link leads to "60x8 toothed gear for VDO dashboard clock (watch) for Porsche Mercedes". By a Hungarian company - Custom InjectionMolded Parts. I could not find another domestic source and so I'll be ordering a handful of these $17 parts.

When I further google that "60x8 toothed..." I found a useful DIY article on Pelican Parts website for installing the new gearwheel (https://www.ebay.com/itm/275240048176).

Page 3 in this (https://forums.pelicanparts.com/por.../913721-vdo-clock-repair-incl-pictures-3.html) Pelican Parts forum reviews and shows the fix, >

and previous pages show the broken gearwheel >

.

So in about 45 days I'll have the part and will follow the linked repair procedure - and also replacing the two capacitors that forum members have noted are also failure items.

Thought I'd post this in this E9 forum for future DIY clock repair searches.

 

[Ohmess]

Yesterday I opened my impaired/noisy E9 Quartz clock and found that initial gearwheel off of the motor had fell off its foot mounting hole. The tiny fragile "foot" had broken off.
I searched our forum and found that @Sean Haas had found a replacement source (!!!) and discussed it in an E3 Clocks thread (https://e9coupe.com/forum/threads/e3-clocks.38190/post-359906).

Sean's ebay link leads to "60x8 toothed gear for VDO dashboard clock (watch) for Porsche Mercedes". By a Hungarian company - Custom InjectionMolded Parts. I could not find another domestic source and so I'll be ordering a handful of these $17 parts.

When I further google that "60x8 toothed..." I found a useful DIY article on Pelican Parts website for installing the new gearwheel (https://www.ebay.com/itm/275240048176).

Page 3 in this (https://forums.pelicanparts.com/por.../913721-vdo-clock-repair-incl-pictures-3.html) Pelican Parts forum reviews and shows the fix, >
View attachment 204787 and previous pages show the broken gearwheel > View attachment 204789 .

So in about 45 days I'll have the part and will follow the linked repair procedure - and also replacing the two capacitors that forum members have noted are also failure items.

Thought I'd post this in this E9 forum for future DIY clock repair searches.

Great info. I had good luck with Japanese capacitors (Panasonic if they meet your spec) back in my video projector days. Mouser, Digikey, or Newark Electronics were my go to sources.

 

[Blinkling]

I just repaired my clock using that exact eBay seller. I have never seen plastic as brittle as that old gear.

At first I didn't grease the new gear. I assumed that the old lubricant might have played a part in the demise of the old gear. I have no idea if that's true.
With no grease or oil the assembly is quite noisy.

The new gear is made of Acetyl / Delrin according to the item description. I decided some silicone grease on the gear teeth and silicone oil on the pivots would be a compatible combination. This made the chattering sounds stop but I can still hear a drone from the clock's motor now that everything is assembled and put back in the car.

All of this is to say: It's marvelous that someone decided to remake this little part and I'm thrilled that my clock is working again! @coupesport, please let me know what lubricants you choose and whether you can get your clock to be silent!

 

[coupesport]

I will let you know but I am still waiting on the gear.

As far as lubricating I bought some Moebius 9010 synthetic clock oil on ebay, a very small amount for ~$20. I read on Clockworks to:
Use synthetic clock oil: Offers excellent temperature stability and longevity. It does not gum up or evaporate like natural oils. Also using too much oil can attract dust, while using too little won’t protect the movement. The golden rule is to apply only a tiny drop of oil to each pivot or bushing.
Here’s a quick checklist:

Apply a drop about the size of a pinhead.​

Never flood the movement with oil.​

Only oil the pivots and contact points — avoid oiling the teeth of gears or springs.​

Use a precision oiler or needle applicator for best results.​