Checking the crankshaft (Taurus 1 and 2)

1. Clean the crankshaft with solvent and dry with compressed air. Treat the oil holes with a stiff brush and wash with solvent. Check the main bearing and connecting rods for wear, scratches, pitting, cracks. Also check the rest of the crankshaft for cracks and other possible damage.

2. Measure the diameters of the main and connecting rod bearings with a micrometer, compare the results with the specification data (see figure). By measuring the diameter at several points along the circumference of each journal, you can determine its deviation from steepness. The taper of the journal is estimated based on the results of several measurements taken along its axis.



3. If the crankshaft journals under the bearing are damaged or have deviations from steepness or conicity above the permissible values, they must be ground. After restoring the crankshaft, use bearings with liners of the appropriate size.

Note: In 3.8LV6 engines, crankshaft journal finishing is permitted to a maximum of 0.254 mm (0.010 in) from the nominal size. Excessive metal removal may result in reduced strength and failure of the crankshaft.

4. According to the recommendations given in section 21, check the main and connecting rod bearing assemblies.