W110 W111 W112 Sedan, BENZ AID - COMMON QUESTIONS AND ANSWERS

1984 300D, little bell shaped device?

Hi all. I just installed new Bilsteins all the way around and the difference in the ride is noticeable. As I was on my back (driveway project as Mercedessource calls it) putting the driver's side rear shock in, I noticed a little bell-shaped part with a small fuel line or hose connected to it. It is located just in front of the rear wheel attached to under-chassie and in from the rocker panel. I really didn't bother tracing where the hose led to or came from and I don't know if there is one on the other side. My only guess is a vent for the fuel system.

Chassis Model Number

W123

Forums

Body and Interior Specific Aid

300SD Adjusted valves by the book, now won't rev ???

n/aI am new to Mercedes and just bought a nice running 1982 300SD. I wanted it to run nicer so I adjusted the valves. Now it acts as though the throttle is not connected, but it is. Can't hardly get it above idle, even when I push the throttle rod at the injector pump. Starts easy, sounds good,
no smoke. I rechecked the valve adjustment, it is spot on .004 intake, .014
exhaust. I had layed the linkage over to the side, don't think I bent
anything-but the speed control actuator does feel limp wristed-that is no
tension. I double checked linkage-seems correct-the rod to the injector pump has about 3/4 to 1 inch of travel-is that normal? Don't know how I could have
changed that. Could the supply pump coincidentally failed? All hoses in right

Chassis Model Number

W126

Forums

Diesel Engine Specific Aid

Dash smoke 1977 300D

Have experienced following:
1. Attempt to start - no crank and smoke comes from driver's side speaker area. Wait 10 minutes, try again, cranks and starts fine with no dash smoke.
2. Attempt to start later - again no crank, more smoke. Wait 10 minutes, cranks slowly but starts, no smoke.

Examination under dash reveals oil around ignition switch. My current thinking is to rebuild the vacuum pump and clean out all the vacuum lines I can reach.

What to do about the ignition switch? As I understand it, the switch is attached to a vacuum element that must have been polluted. It seems like the switch itself is now polluted too. Should I replace switch alone after vacuum pump rebuild? Or switch and vacuum element together?

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

83 300SD starter removal tips?

Hi:

My starter motor spins and will not engage 4 out of 5 tries, so I need at least a new solenoid.

It looks difficult to get the solenoid out, what with the heat shield blocking the wiring, and because I can't seem to break the (3) screws loose.

I figure the starter has to come out to replace the solenoid. I may replace the entire unit.

It looks like the exhaust head pipe has to move, because the starter looks too big to slip out any other way. Moving the head pipe will also make access to the two starter bolts easier.

Chassis Model Number

W126

Forums

Diesel Engine Specific Aid

Pages