300CD (123.153) L5-3.0L DSL Turbo (617.952) (1982)
2. Connect digital tester to diagnostic socket.
3. Check control linkage for ease of movement and wear.
4. Run engine to 60-80 °C coolant temperature.
5. On model 116 up to model year 1979, turn idle speed adjuster completely to the right and check distance between nipple and clip on contour
spring and adjust, if required. Nominal dimension approx. 1.0 mm.
Attention: Check whether the special form spring is fitted correctly. To do so, turn rotary knob back to left; free movement to point where
idle speed rises again must not exceed approx. 1/2 turn. If necessary, adjust at screw (2).
6. Adjust tempomat (cruise control)