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M161 ENGINE MECHANICAL 1B2-99 SSANGYONG Y200 YAD1B4E0 YAD1B4F0 Measurement of Cylinder Bore 1. Clean the cylinder wall. 2. Using a internal diameter gauge, measure the bore size in axial and transverse direction at three 1, 2, 3 Measuring Points A. Axial Direction B. Transverse Direction a. Location of the No.1 Piston Ring at TDC b. Location of the Piston BDC c. Location of the Oil Ring at BDC Chamfer Angle Cylinder Bore Size (mm) φ 89.900 - φ 89.906 φ 89.906 - φ 89.912 φ 89.912 - φ 89.918 φ 90.150 - φ 90.156 φ 89.156 - φ 90.162 φ 90.162 - φ 90.168 φ 90.400 - φ 90.406 φ 90.406 - φ 90.412 φ 90.412 - φ 90.418 Group Code Letter 1) A X B A X B A X B Group Code Letter Cylinder Standard Size
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90.9 1st Repair Size (Standard Size + 0.25) 2nd Repair Size (Standard Size + 0.5) 1) The group code letters are carved on the surface of the piston crown and in the mating surface of the crankcase. Service Data Standard Wear Limit in Longitudinal and Transverse Direction Permissible Deviation of Cylinder Out-of-round When new Wear limit Permissible Deviation of Rectangular Cylinder Height (Except Chamfered Area) Basic Peak-to-valley Height After Final Honing and Brushing Chamfer Angle Honing Angle 0.1 mm 0.007 mm 0.05 mm 0.05 mm 0.003 - 0.006 mm 75 ° 50 ° ± 10 ° |