W123, Electrical

1984 300D rack dampner installation and adjustment

Hi all. I purchased the injector pump rack dampner bolt from Mercedessource complete with instructions. The mention of an O-ring made me somewhat prepared for some kind of fluid to be leaking out as O-rings are usually sealing something off. I expected diesel fuel but oil leaked out of the hole. There was no mention in the instructions of any fluids leaking out of the hole when removing the old one but I had some oil leak out and was wondering if that was normal.

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

1982 300D bypassing over-boost solenoid

I have researched quite a bit and everyone seems to explain the purpose of this solenoid but not elaborate on it. I can't make a standing decision if it should be left on the car or removed. On two of our cars, we have it bypassed. We just have the alda running to the banjo bolt. How does this affect performance? If the overboost solenoid cuts fuel down to N/A amounts, will bypassing it cut the fuel permanently? What does this do?

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

123 TD Wagon Rear Suspension Inspection Procedure ??

I own two wagons, an 82 and an 85. The 82 has rebuilt rear suspension in the form of new accumulators, shocks and leveling valve. The 85 has had the shocks replaced some time ago, but is now mushy and leaks down over a period of 12-24 hours. I'd like to perform a preventive maintenance inspection and performance test to determine the condition of the system and point to component failures. Where is a good place to start?

Chassis Model Number

W123

Forums

Transmission / Suspension Specific Aid

1980 300d valve adjustment major snafu-HELP!

well i've done it now...was adjusting the valves on my 1980 300d and the #2 intake valve wouldn't adjust. so i kept turning until the adjusting nut was free of the rest of the assembly and is now in my greasy little hand. (i know, not so smart)any ideas how to compress the valve spring to get this little monster back where it belongs so i can actually adjust the valve, move on, and pretend this never happened? thanks.
victoria

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

1984 300D Air...route of entry?

Hi all. Seems my car is pulling some air into the fuel system from somewhere. I can see tiny bubbles that gather in the clear pre-filter when I rev it up. She runs a little rough after a highway cruise too. I figured the leak must be somewhere before that filter. I have installed a new screen in the fuel tank and a new hose and clamp from the tank screen to the metal fuel line that leads to the engine compartment. Also purchased the fuel line kit and have new hoses and clamps on pre-filter in and out. All clamps are tight. My question is....

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

123 79' warped window regulators

I just got kent's nifty door panel remover manual and got to work on both my rear doors. neither of the rear electric windows work. i discovered that the aluminum window regulators are totally warped-so much so that on one side the motor was jammed and on the other the teeth on the regulator are worn way down. they were even really, really hard to get out of the door 'cause they are so bent. thankfully, both the motors seem to work, now that they are free from the jammed, warped mechanism.

Chassis Model Number

W123

Forums

Body and Interior Specific Aid

85 300TD starter motor will not engage w/key

Ok...here's the problem: one day, the starter motor failed to engage w/key. We had already replaced the ignition switch due to another issue and it's ok (also tried a spare I had on hand...still no go.) Then, we replaced the park/neutral switch (an ordeal...and it wasn't even bad!)...still no start. I can jump the two terminals on the passenger wheel well and the starter works great. Any ideas where to go from here? I'm almost ready to rig up a pushbutton start!

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

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