W123, Factory Books and Manuals

1984 300TD A/C not blowing cold

I have a '84 300TD wagon. Last year I took the car in to get the A/C checked out as it was not working when I purchased the car. They checked the lines and it seemed to hold pressure just fine. They replaced the valve with one for R134 and put two cans in, and at once the compressor kicked on and started blowing cold air. The aux fan has never worked but that didn't seem to matter much unless I was standing still and it would be a little less cool. Everything has been working fine for the last year, until recently.

Chassis Model Number

W123

Forums

Body and Interior Specific Aid

1985 300D Engine Mounts

1985 300D, 123, 4 door sedan - only a little over 100.0 k on it. Thought I would change the engine mounts - owned old Mercedes diesels for over 35 years. This car is new to me - put about 8.0 k on it.

What is with the engine mounts! It has been tough to get the inside Allen bolt loose - I was finally able to get loose the one on the passenger side but the drivers side is driving me nuts - too close a tolerance with the bracket that holds the engine shock damper and is also the main weight bearing member that fastens to the engine mount.

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

1982 300d turbo runs rough when cold

bought a rough running 1982 300d turbo. Previous owner thought it was the injectors and replaced them with junkyard injectors and didn't use washers! I adjusted the valves as per Kent's instructions with his wrenches. I did a compression test - good compression in all cylinders. Installed MS rebuilt injectors and torqued to specs. Installed dampner bolt. Glow plugs work fine. Engine starts eaisly but runs very rough untill it warms up, then it runs great! I don't see any leaks of fuel. I am really stuck. I have an identical 300d that has run fine for the past 4 years!

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

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