Just picked up a 1960 300d - fuel mix adjust?
 

I just picked up a 1960 300d Adenauer with a hydrak. It's good, solid, and very complete. The previous owner has a lot of work done (IP, fuel, etc)

When I bought the car, 3 of 6 plugs were fouled.. I am guessing it was running too rich. It definitely smells rich.. how does one adjust the mixture? After changing the plugs, she runs really well and is fun to drive (after replacing the shifter handle bushing)

allthough pretty complete, there was no owner's manual. I'd love to find even a scan of the owner's manual for this car.

I'd like to replace the bulbs in the instrument cluster and look at the wiring situation behind the dash. can anyone tell me the procedure for cluster lamp replacement / dash deinstallation?

There used to be a site www.3-0-0.org -- but that seems to have gone away. I was hoping to find some info there. does anyone know what happened to it?

you can use the internet wayback machine to view that site.
if you want to use their old tech articles.

Maybe these will be of some help....

By the way, some of the Mercedes from this era had to have the fuel adjusted with the front tires turned one way or the other fully because of a boost valve that fed additional fuel to the engine in order to keep the idle stable when the power steering was at its' highest pressure. If the car dies when you turn the wheels to the max right or left then start searching for this valve.

Fuel mixture at idle is adjusted at the back of the IP. Look for a knob which you push in and then turn left or right when looking at the back of the pump. Left is less fuel and right will give you more. Turn it two or three clicks at a time and then adjust using the air ballance screw. Adjust the ignition timing until you get a smooth and consistant idle. It's not hrd to do but then it's not that easy if you are not familiar with the car.

You should also check to make sure the cold start valve isn't leaking and that the warm up regulator is moving freely so that the mixture leans out as the engine warms up.

I have a dealers parts book if you need any help.

Make sure the engine is not running when you turn the knob.

These are such wonderful cars, but so expensive to make right that there aren't a lot of nice ones left. Could you post some pictures?

I just noticed from the diagram I posted that the ignition switch runs through the oil pressure gauge. This will prevent the engine from running with no oil pressure.

Pretty smart. This feature did not appear on American cars until about 1980.

My Adenauer no longer has Mercedes power and I can't offer advice on your problem, however, I do have the owners manual and engine service manual if you would like scans of something in particular. PM me if so.

Btw- the Adenauer chat moved to :
http://autos.groups.yahoo.com/group/3-0-0/
Must join group to chat, but very knowledge bunch there.


Good luck!