See also:

Brake disc - examination, removal and refitting
Note: From 1987, thicker brake discs were fitted. If the later discs are fitted to earlier models, longer wheel studs must be fitted to accommodate the increased thickness. Consult a dealer for fu ...

Ford Sierra Service Manual
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Fuel system - depressurising
Warning: The fuel system will remain pressurised after the engine is switched off. Comply with all relevant safety precautions during this operation and refer to the “Safety first!” Section at th ...