Engine Disassembly and Assembly4. Install tooling (B) on the ends of the crankshaft, andfasten a hoist to It.5. Make an alignment of the connecting rods with thecrankshaft. Make an alignment of the "C" marks oncrankshaft gear (3) and camshaft gear (4). When theconnecting rods and the "C" marks are in alignment,lower the crankshaft on to the main bearings and removetooling (B).6. Check the main bearing clearances with Plastigauge(C) as follows:a. Put a piece of Plastigauge (C) in position as shown.NOTICEMake sure the part number on the main bearing cap istoward the front of the engine and the number on themain bearing cap is the same as the number on thecylinder block on the left side of each main bearing cap.NOTEDo not turn the crankshaft when Plastigauge (C)is in position.b. Install main bearing cap (5). Put clean engine oil onthe bolt threads and the face of the washers and Installthe bolts. Tighten the bolts to a torque of 41 + 4 N-m (30+ 3 lb.ft.).c. Put a mark on each bolt and main bearing cap; thentighten the bolts 900 more.d. Remove the main bearing caps. Measure thePlastigauge. The main bearing clearance must be 0.076to 0.165 mm (.0030 to .0065 in.). The maximumpermissible clearance with used bearings is 0.25 mm(.010 in.).118
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