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

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

Preventive In Dash Repairs On 1986 560 SEC

1986 560 SEC coupe

Greetings:

I share Kent's pholosophy of prevention. I have removed the center console where the shifter is and the radio, climate console and ashtray to refinish the wood. While all that is out, what things do you recommend that I change out while I have easier access inside the dash? BTW I am in the process of replacing the climate control motor brushes and the gauge cluster lights as Kent suggested but was wondering if there were other items?

Thanks,

John Sebastian

Chassis Model Number

W126

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

W126 350SD 1991 thrown belt

I'm not exactly sure what happened with my car but I've heard it described as a thrown belt, anyway it broke and ripped my power steering pump off and tore off the belt tensioner pulley.
I'm in the process of putting things back together and noticed that I need a new AC compressor. Should I attempt to replace it myself if I have no prior experience with AC and don't want to buy a bunch of expensive tools?
Also, how do you get the high pressure hose off of the power steering pump where it connects to the pump reservoir?

Chassis Model Number

W126

Forums

Diesel Engine Specific Aid

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