I was reading the MB info on Adaptive Brake System and this tweaked my curiosity -
"Priming is another ingenious safety measure. If the accelerator pedal is released abruptly, the Adaptive Brake System anticipates the driver’s intentions and brings the brake pads closer to the brake discs...
Found this well illustrated post on changing the timing chain and valve clearances on the 16v 190 engines. Its under technical/engine and drive train/engine/changing timing chain and valve clearances. http://www.mercedes190.co.uk/ :rock: