See also:

Ford Sierra Service Manual
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Heater - removal and refitting
Removal 1 Disconnect the battery negative lead. 2 Refer to Chapter 11 and remove the centre console. 3 Working within the engine compartment, disconnect the coolant hoses from the heater pipe st ...

Air cleaner - removal and refitting
The procedure is similar to that described in Part A of this Chapter for carburettor engines. ...