Dave,
How does the Vacuum Control Assembly work? Does it regulate the amount of vacuum, is it adjustable? I assume the selector switch inside controls something.

Thanks Barry, that sure helps, and thanks again for the other.

Dave,
This thing was completely froze up, the previous owner had the vacuum plugged. I pulled a vacuum on the vacuum cylinder and it moved, so I assume it is good. Going to make a new diaphragm out of rubber. I have been driving with no boost, it stopped but you had to push real hard on the petal. Attached is a photo of the diaphragm I am going to copy. Thanks for your help.

Richard

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Can not find a breakdown on my vacuum valve. I assumed it had a rubber diaphragm but when I took if apart it looks like a piston or disc operated.
I would think the piston would come out but it is frozen, got it soaking overnight and will try tomorrow to got it out. I also don't quite understand the gasket or seal also. Would love to see a breakdown if anyone has one.
Dave hope you can help, I am sure you took yours apart on your 34......

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Will do Dell, thanks.
Richard

Ok, thanks Dave.
Richard

Are there any Mazda 3003 bulbs out there for sale?
Richard

Thanks Chris, will try that.
Richard

Dave,
See attached;
This is what I have, nothing like yours.
I still think the big threaded bolt/nut on the right will give me more movement, but have tried both ways with no luck.
Richard

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I am having a hard time adjusting the Pine Winterfront thermostat on the 34. I can get it set for fully closed but only opens up part way when hot and also the opposite way, adjust to fully open but won't close all the way.
I need more throw.
Does the 1 1/8" all exterior thread nut control the throw?
If so which way, in or out ?

Richard