See also:

Alternator drivebelt check (Every 6000 miles or 6 months)
1 A conventional vee drivebelt is used to drive both the alternators and water pump pulleys on OHV and HCS engines, and the alternator pulley only on CVH engines, power being transmitted via a pul ...

Ford Sierra Service Manual
...

Sump - removal and refitting
Note: New gaskets and sealing strips must be used on refitting. Removal 1 Disconnect the battery negative lead and drain the engine oil (see Chapter 1). 2 Refer to Chapter 5, Part A and remove th ...