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CYLINDER BLOCK EM-463 < UNIT DISASSEMBLY AND ASSEMBLY > [R9M] C D E F G H I J K L M A EM N P O • Measure the distortion on the cylinder block upper face at different points in six directions (C, D, E, F, G and H) with a straight edge • If it exceeds the standard, replace cylinder block. MAIN BEARING HOUSING INNER DIAMETER • Install main bearing cap without main bearings installed, and tighten main bearing cap mounting bolts to the specified torque. Refer to EM-447, "Disassembly and Assembly" . • Measure the inner diameter of main bearing housing with a bore gauge. • If it exceeds the standard, replace cylinder block and main bearing caps assembly. PISTON TO CYLINDER BORE CLEARANCE Cylinder Bore Inner Diameter • Using a bore gauge, measure the cylinder bore for wear, out-of-round and taper at six different points on each cylinder. • If it exceeds the standard, or if there are scratches and/or seizure on the cylinder inner wall, replace cylinder block. Piston Skirt Diameter Measure the outer diameter of piston skirt with a micrometer (A). Piston to Cylinder Bore Clearance Calculate by piston skirt diameter and cylinder bore inner diameter. • If it exceeds the standard, replace piston and piston pin assembly and/or cylinder block. Standard : . JPBIA0224ZZ 1 : Cylinder block 2 : Main bearing cap Standard : JPBIA0225ZZ Standard: Cylinder bore inner diameter : Refer to . Standard : Measure point : Refer to JPBIA0227ZZ Standard : Refer to . |