See also:

Timing belt and sprockets - removal and refitting
Note: Refer to the warning in Section 8 before proceeding. On models from mid-1985 (without a timing belt tensioner spring) the belt tension should be checked using Ford special tool No 21-113 aft ...

Crankshaft and bearings - examination and renovation
1 Examine the bearing surfaces of the crankshaft for scratches or scoring and, using a micrometer, check each journal and crankpin for ovality. Where this is found to be in excess of 0.0254 mm (0. ...

Crankcase ventilation system check (Every 12 000 miles (20 000 km) or 12 months)
1 Inspect the crankcase ventilation system for blockage or damage. A blocked hose can cause a build-up of crankcase pressure, which in turn can cause oil leaks (see illustration). 35.1 Loosenin ...