W123, Electrical
Driveline and rear end
Drive Line Flex Disk Deterioration and Catastrophic Failure
Start with inspection and replace at first signs of wear to prevent expensive damage to transmission
Engine
Keeping the Power Steering Fluid Clean
Many are surprised to learn there is a filter down inside the pump
Driveline and rear end
Rear End Clunking Noises
Sign of worn part when driving over rough ground
Engine
Diesel Engine Camshaft Inspection and Adverse Wear
This can be a sign that the engine has not been well maintained
Engine
Plastic Radiator Neck Failure
An ounce of preventation is worth hundreds of dollars in repair
Engine
Using Silicone RTV Gasket Adhesives
Alert! Use at your own risk
Transmission
Repairing Leaking Transmission Cooler Metal Pipes on Older Diesels
Often caused by loose fittings and engine vibration
Engine
Oil Cooler Hose Leaks and Failure on Older Mercedes (especially OM 616 and OM 617 Diesels)
Failure of these hoses can lead to total destruction of your engine
Climate Control
Intermittent Cabin Heat - Second Generation Climate Control
Applies to late 123 and 107 chassis and all 126 chassis 1981 to 1991