Good day, everyone.
I’ve spent the last few days studying the vacuum system on my Toronado and have removed the front headlight control unit. And I have to say—after 40 or 50 years of use—I would advise everyone to remove this unit and take a look inside.
Moisture, dirt, and rust cause significant trouble for all the components and the diaphragm itself; consequently, it tends to develop leaks over time. The design is actually quite amusing, and I’m amazed that it managed to function for so many years at all. The engineers at General Motors and Oldsmobile obviously put some thought into it, but clearly, no one anticipated that it would need to last for over 60 years. The lower section houses a strong spring and the vacuum mechanism. If the vacuum fails, the headlights automatically pop up—so, theoretically, you should never be left without lights. In the upper section of the housing, there is no vacuum, is the area sealed tight. Moisture, sand, and other debris can enter both through the gap around the actuating rod and through three small vents in the lid designed for air release. As a result, the rod begins to rust from the bottom up. This corrosion also accumulates on the diaphragm.
I took detailed photographs of mine. Now, I’d like to show you how to restore it: the best approach is to first treat the diaphragm with silicone to make it soft and pliable again, and then lubricate it with a grease that won't degrade the rubber—such as Vaseline or something similar. Using anything else will lead to the rubber breaking down! Therefore, be extremely cautious with various oils, chemical treatments, or modern lubricants.
In my case, a hose was leaking—actually, it was torn—and a diaphragm on the left side, where moisture tends to accumulate, was completely ruined; strangely enough, it was also torn in several different places. I have absolutely no idea how that happened.















I’m hoping that once I’ve reassembled everything, it will be back in working order. Best regards, and have a wonderful weekend!

 

So, yesterday I sent everything off to a German company that specializes in restoring all the seals using some interesting technology. I’m curious to see what the results—and the price tag—will look like, assuming it actually works again and the lights come back to life. I’ll definitely be posting updates here as things progress. Perhaps someone else out there might be interested in getting a repair done, so let’s see what next week brings. Otherwise, warm regards from Germany—wishing you and your Cruiser a lovely, relaxing, and sunny weekend!

 

And this is my compact, pragmatic solution for the "sleepy eyes" on my car, until the repair of the vacuum mechanism is complete. It can be secured with a single motion—in any weather, and without needing any keys or light.

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Just feedback so you'll know that someone appreciates the info!

 

Thanks