Mercedes Coupes/Sedans/Wagons 1974-1984 Repair Guide

VACUUM DIAGRAMS

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Following are vacuum diagrams for most of the engine and emissions package combinations covered by this guide. Because vacuum circuits will vary based on various engine and vehicle options, always refer first to the vehicle emission control information label, if present. Should the label be missing, or should vehicle be equipped with a different engine from the vehicle's original equipment, refer to the diagrams below for the same or similar configuration.

If you wish to obtain a replacement emissions label, most manufacturers make the labels available for purchase. The labels can usually be ordered from a local dealer.

See Figures 1 through 14



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Fig. Fig. 1: Emission hose routing and components1977 230 models



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Fig. Fig. 2: Emission hose routing and components1977 280E and SE models (Federal)



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Fig. Fig. 3: Emission hose routing and components1977 280E and SE models (California)



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Fig. Fig. 4: Emission hose routing and components1977 4.5L V8 models (Federal)



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Fig. Fig. 5: Emission hose routing and components1977 4.5L V8 models (California)



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Fig. Fig. 6: Emission hose routing and components1978 230 models. Locations same as on 1977 models



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Fig. Fig. 7: Emission hose routing and components1978-79 280E, CE and SE models (Federal). Locations same as on 1977 models



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Fig. Fig. 8: Emission hose routing and components1978-79 280E, CE and SE models (California). Locations same as on 1977 models



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Fig. Fig. 9: Emission hose routing and components1978-79 V8 models (Federal). Locations same as on 1977 models



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Fig. Fig. 10: Emission hose routing and components1978-79 4.5L V8 models (Federal). Locations same as on 1977 models



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Fig. Fig. 11: Emission hose routing and components1980 6-cylinder models



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Fig. Fig. 12: Emission hose routing and components1981 6-cylinder models



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Fig. Fig. 13: Emission hose routing and components1982-83 3.8L V8 models



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Fig. Fig. 14: Emission hose routing and components1984 V8 models

 
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