Crankshaft assembly (engines AAN, AAR)
- 1. Oil receiver tube
- 2. Bolt, 10 Nm
- 3. Stop plate
- 4. Gasket
- 5. Bolt, 10 Nm
- 6. Main bearing caps
- 7. Bolt, 65 Nm
- 8. Thrust half rings of main bearing caps
- 9. Upper main bearing shells
- 10. Lower shells of main bearings
- 11. Thrust half rings of the cylinder block
- 12. Crankshaft
- 13. Oil seal
- 14, 15. Bolt, 10 Nm
- 16. Oil pump
- 17, 18. Gasket
- 19. Rear oil seal holder
- 20. Oil seal
- 21. Bolt, 20 Nm
- 22. Flywheel
- 23. Retaining rings
- 24. Guide bearing
- 25. Bolt
Warning: When measuring the end play, the crankshaft must not be rotated.
Warning: Locking plate 3 must be replaced.
Warning: Gasket 4 must be replaced.
Warning: Main bearing caps 6: The first bearing cap is located on the side of the crankshaft pulley. Pay attention to the offset location of the bed under the bearing shell and the lugs of the mounting bolts.
Warning: When installing the thrust half rings of the main bearing caps 8, pay attention to the orientation of the rings.
Warning: Install the upper main bearing shells 9 together with the thrust washers.
Warning: The lower main bearing shells 10 are not interchangeable.
Warning: Press out oil seal 13 using tool 320 3. Lightly lubricate the working and outer edges before installation. Install using drifts from 2080 A kit.
Warning: When installing the oil pump 16, make sure that it fits correctly on the crankshaft.
Warning: Gaskets 17 and 18 must be replaced.
Warning: Remove seal 20 using tool 2086. Do not lubricate during installation, as grease has been applied to the seal from the repair kit in advance. Install using the tool included in the repair kit. Remove the tool and press in with drift 2003/1 until it stops.
Warning: Before removing the flywheel 22, apply orientation marks in relation to the crankshaft.
Warning: Tighten bolt 25 to 350 Nm and tighten 1/4 turn (90°).
Withdrawal
1. Remove pistons and connecting rods.
2. Check the free play of the shaft with a special measuring tool or feeler gauges.
3. Main bearing caps must be numbered.
4. Loosen the main bearing cap bolts.
5. Take out the bolts.
6. Remove the crankshaft.
7. Remove loose leaves from the block of cylinders and remove half rings of the central bearing.
Examination
1. Clean the crankshaft with solvent and dry it with compressed air.
2. Inspect the crankshaft bearings for signs of wear, scratches, corrosion, or cracks. Rub a copper coin on the bearing. If the bearing wears off the copper, then its surface is too rough and needs to be machined.
3. Inspect the crankshaft for cracks or other damage.
4. Measure the diameters of the journals of the main and connecting rod bearings.
5. Check the bearing journals for taper and ovality.
6. Check the crankshaft seal journals for signs of wear or damage. If the seals have worn out the grooves on the journals, then the new seals will leak oil.
7. Measure the shaft runout.
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