Crankshaft and bearings - examination and renovation
1.8 litre (R2A type)
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 (0.001 in) the
crankshaft will have to be reground and
undersize bearings fitted.
2 Crankshaft regrinding should be carried out by a suitable engineering works, who will normally supply the matching undersize main and big-end shell bearings.
3 Note that undersize bearings may already have been fitted either in production or by a previous repairer. Check the markings on the backs of the old bearing shells, and if in doubt take them along when buying new ones.
4 If the crankshaft endfloat is more than the maximum specified amount, a new thrust bearing shell should be fitted to the centre main bearing.
5 An accurate method of determining bearing
wear is by the use of Plastigage. The
crankshaft is located in the main bearings
(and big-end bearings if necessary) and the
Plastigage filament located across the journal
which must be dry. The cap is then fitted and
the bolts/nuts tightened to the specified
torque. On removal of the cap the width of the
filament is checked with a plastic gauge and
1.8 litre (R2A type)
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 (0.001 in) the
crankshaft will have to be reground and
undersize bearings fitted.
2 Crankshaft regrinding should be carried out by a suitable engineering works, who will normally supply the matching undersize main and big-end shell bearings.
3 Note that undersize bearings may already have been fitted either in production or by a previous repairer. Check the markings on the backs of the old bearing shells, and if in doubt take them along when buying new ones.
4 If the crankshaft endfloat is more than the maximum specified amount, a new thrust bearing shell should be fitted to the centre main bearing.
5 An accurate method of determining bearing wear is by the use of Plastigage. The crankshaft is located in the main bearings (and big-end bearings if necessary) and the Plastigage filament located across the journal which must be dry. The cap is then fitted and the bolts/nuts tightened to the specified torque. On removal of the cap the width of the filament is checked with a plastic gauge and
Cylinder block and bores - examination and renovation
Refer to Section 36, Chapter 2, Part A but note that the crankcase ventilation baffle should be removed from its location at the rear of the cylinder block and cleaned if necessary (see illustration).
34.1 Removing the crankcase ventilation baffle
Initial start-up after overhaul or major repair
Refer to Section 37, Chapter 2, Part A.
See also:
Major operations possible with the engine in the car
The following work can be carried out
without having to remove the engine:
a) Cylinder head - removal and refitting.
b) Valve clearances - adjustment (see
Chapter 1).
c) Sump - removal and refitt ...
Front brake disc - inspection, removal and refitting
Note: Before starting work, refer to the
warning at the beginning of Section 2
concerning the dangers of asbestos dust.
Inspection
1 Fully apply the handbrake then loosen the
front roadwheel bolt ...
Cleaning
WASHING THE EXTERIOR
Wash your vehicle regularly with cool or lukewarm water and a neutral
Ph shampoo, such as Motorcraft Detail Wash (ZC-3-A), which is available
from your dealer.
Never use st ...