ALTROZ SERVICE MANUAL

1.5L REVOTORQ ENGINE 65 Stage Cylinder block crank bore diameter (Ø) ‘A’ Crankshaft main bearing journal diameter (Ø) ‘A’ Main bearing upper & lower thickness ‘A’ wall Standard Selective Assembly 53.800 - 53.809 (White – A) 53.810 – 53.818 (Red – C) 49.991-50.000 (Orange – F) 49.982-49.990 (Green – D) 1.894/1.898 (Blue – J) 1.890/1.894 (No Color – K) 1.886/1.890 (Green – L) * Refer graded main bearing selection table in ‘Assembly Clearance’ section. Stage Width of 4 th main bearing journal (mm) 4 th main bearing thrust washer thickness (mm) Standard 24.000 / 24.052 2.50 - 2.55 Standard 1 - - Repair 1 - - Maintenance Limit End play of crank shaft 0.06 – 0.245 mm Fillet radius of main bearing journals 2.5 – 0.5 mm Fillet radius of crank pin journals 2.5 – 0.5 mm Width of 1 st , 2 nd , 3 rd and 5 th main bearing journals 24.00 +0.20mm Width of crank pin journals 24.000 + 0.2 mm Maximum permissible cylindricity main bearing journal 0.005 Circularity of main bearing journal 0.0025 Maximum permissible circularity of crank pin 0.005 Maximum cylindricity of crank pin 0.008 Maximum permissible run out of 2nd, 3rd and 4th main bearing journals when supported at 1st and 5th main bearing journals 0.1 Maximum permissible out of parallelism between crank pin and main bearing journal axis 0.01 Crush height of main bearing shells 0.045 – 0.080 mm Hardness of crank shaft main bearing and crank pin journals 56 ± 3 HRC Main bearing parent bore diameter in crank case A grade = 53.800 - 53.809 C grade = 53.810 -53.818 Maximum permissible taper of main bearing parent bore 0.005 Maximum permissible sphericity of main bearing parent bore 0.03 Crank shaft journal to main bearing clearance 0.020 - 0.048