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5. Use a 19# sleeve to remove the fixing bolt of crankshaft main bearing cap.
Note: The surface between cylinder block and bearing cap is ensured by high precision machining plane, so, do not use any hard article to scuff this surface.
6. Take off crankshaft rear oil seal assembly, remove bearing shell cover, and then take off crankshaft assembly.
II. Overhaul of Crank-Connecting Rod System 1. Detection of crankshaft. 1.1 Detection of crankshaft main journal: use an outside micrometer to measure main journal of crankshaft and the normal value should be 46.01mm.
1.2 Detection of connecting rod journal: use an outside micrometer to measure connecting rod journal of crankshaft and the normal value should be 44.485-44.495mm.
1.3 Measurement of main journal clearance: place a plastic feeler gauge on the crankshaft main journal, tighten the main bearing shell cover to specified torque and then loosen it, use the thickness check list on the plastic feeler gauge to read the value. The normal value should be: 0.02-0.06mm. Use the same method to measure connecting rod journal clearance.
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