With a Haynes manual, you can do it yourself…from simple maintenance to basic repairs. Haynes writes every book based on a complete teardown of the vehicle. We learn the best ways to do a job and that makes it quicker, easier and cheaper for you. Our books have clear instructions and plenty of photographs that show each step. Whether you’re a beginner or a pro, you can save big with Haynes! • Step-by-step procedures • Easy-to-follow photos • Complete troubleshooting section • Valuable short cuts • Color spark plug diagnosis Complete coverage for your Mercedes-Benz Diesel 123 Series covering all 200D 220D, 240D, 240TD, 300D, 300CD, 300TD models, designated W123 Series 4-cyl & 5-cyl including turbo-diesel (1976 thru 1985): • Routine Maintenance • Tune-up procedures • Engine repair • Cooling and heating • Air Conditioning • Fuel and exhaust • Emissions control • Ignition • Brakes • Suspension and steering • Electrical systems • Wiring diagrams