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:
Rear shock absorber (Saloon and Estate models) - removal,
testing and refitting
Removal
1 Slacken the roadwheel bolts, raise the rear
of the vehicle, support it on stands (see
“Jacking and Vehicle Support”) and remove
the roadwheel.
2 Support the suspension lower arm with a
...
Integral heated rear window/radio aerial amplifier - removal and refitting
1 Disconnect the battery negative lead.
Saloon models
2 Remove both rear seat side cushions.
3 Remove the securing screws and withdraw
the rear parcel shelf.
4 Make a note of the wiring connectio ...
Air cleaner assembly - removal and refitting
Removal
1 Disconnect the battery negative terminal.
2 Disconnect the crankcase ventilation hoses
which are accessible from above, from the air
cleaner body (see illustration).
2.2 Disconnecting ...