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ST828M ENGINE Crankshaft dimensions-millimetre Cranks haft Diameter '12' Width '13' Diameter '1 4' Grade Standard 58.400-58.412 26.975-27.026 50.800-50.812 0.254 U/S 58.146-58.158 26.975-27.026 50.546-50.558 0.508 U/S 57.892-57.904 27.229-27.280 50.292-50.304 Check main bearing clearance 26. Graduation most closely corresponding to width of Plastigauge indicates bearing 16. Remove oil seals from cylinder block and rear clearance. main bearing cap. 27. Correct bearing clearance with new or 17. Locate upper main bearing shells (with oil overhauled components is 0.023 to 0.065 mm. hole and oil grooves) into cylinder block. 28. If correct clearance is not obtained initially, 18. Locate flanged upper centre main bearing select a suitable bearing to give required shell. clearance. 19. Place crankshaft in position on bearings. 29. Wipe off Plastigauge with an oily rag. Do NOT 20. Place a piece of Plastigauge across centre of crankshaft main bearing journals. 21. Locate lower shells into main bearing caps. scrape it off. 30. Maintain bearing shells and caps in sets, in the correct sequence. ASSEMBLING ENGINE FIT CRANKSHAFT AND MAIN BEARINGS 1. Locate upper main bearing shells (with oil holes and grooves) in cylinder block. 2. Locate the flanged upper centre main bearing shell. 3. Lubricate crankshaft main bearing journals and bearing shells with clean engine oil and lower crankshaft into position. ST830M 22. Fit numbers one to four main bearing caps and shells, tighten to 70 Nm. 23. Fit rear main bearing cap and shell and tighten to 90 Nm. Do not allow crankshaft to rotate while Plastigauge is in use. 24. Remove main bearing caps and shells. measure flattened Plastigauge at widest point. |