2. Check the main and connecting rod journals for uneven wear, scratches, corrosion and cracks.
3. Run a copper coin across each neck several times. If copper remains on the neck, it is too rough (see illustration).
4. Remove burrs from the crankshaft oil holes using a file or scraper.
[Material is available on the website: www.skodabook.ru]
5. Using a micrometer, measure the diameter of the main and connecting rod journals of the crankshaft and compare the results with Specifications. Check carefully that the diameter of each neck is within the allowable range for the corresponding size group. If any measured diameter is not within the designated group, repeat the measurements again (see illustration).
6. By measuring the diameter at several points around each journal, you can determine the ovality of the journal. And by measuring the diameter at the edges of the journal, near the counterweights, you can determine the taper of the journal.
7. If the crankshaft journals are damaged, tapered, oval, or the wear exceeds the permissible limits, Specifications values, the crankshaft must be reground to the next size and the corresponding repair kit of bearings must be purchased. Skoda produces three different repair groups of main and connecting rod bearings, and thrust washers. For these questions, contact your Skoda dealer or an engine rebuilder who has the appropriate equipment.
8. Inspect the oil seal locations at each end of the crankshaft for damage or signs of wear. If the oil seal has left a deep groove in the crankshaft journal, consult a specialist to determine if it can be repaired, or replace the crankshaft with a new one.
9. Using a micrometer, measure the thickness of the crankshaft thrust washer and compare the obtained dimensions with the data in Specifications (see illustration). If either thrust washer is worn, replace both. Note that after resurfacing the crankshaft, one thrust washer will be thicker than the other. The thicker washer is always installed on the inside (i.e. next to the crankshaft counterweight).
