recommend Mechanic in Rockville,MD? and a few other simple ?'s

"brand new" owner of 1986 300 SDL. Need good independent mechanic to put me on the proper maintenance schedule and fix a few "little" things:
1. vaccuum leak causing run-on after key turned off
2. rear window inoperable - after removal of door panel discovered broken plastic thingie connecting mechanical arm to bottom of window
3. clock
4. proper maintenance schedule
5. tune up, is it the same as for a gas engine? what should I ask/look for?
6. what does 300 SDL mean? what is "126"?
Any suggestions would be appreciated.
Thanks in advance.
Curtis A.
by the way, if anyone has an Allante, there is a great board at http://www.allante.org/BB1

[tstarr]

Curtis,

I live in Potomac and have a 1982 300SD. Some of your problems are reminiscent of mine.

1. Vacuum leak causing runon - I replaced the vacuum pump (fairly easy DIY job) and the problem went away. I did check the lines, etc., and didn't see anything else. Since the car has over 200,000 on it, I'm erring on the side of replacing parts instead of spending huge amounts of investigative time.
2. "Plastic thingie" on door - I had that problem with my right rear and did the job myself. It WAS a bit of a job, but those are the ones that save you the most money as a DIY.

I would buy the 126 CD from MercedesShop and review the basics there.

On a mechanic, the best I can suggest is Potomac, Cherner Classic Cars, who is now doing Mercedes work. I had them work on my Packard (another story...) and they did good work at a reasonable price. I've seen a number of later model Mercedes there, as well. They are right on the corner of Falls Rd. and River Road. Lots of nice looking classics parked out front. I don't have any other mechanical experience in Potomac.

Good luck.

- Ted

[Mike Murrell]

How far are you from Timonium, Md?

Check out -> http://www.royfieldsmercedes.com

If you're not in this vicinity, perhaps Roy could refer you to someone in your area.

[Chiragp]

They are very good, and actually have a division that races 190Es as well. Try them. http://www.rc-imports.com