SAFARI

74 486 PL ENGINE P Crank Shaft (Dimensions) : Stage Crank case main Crank shaft bearing bore main bearing diameter with journal bearing shell diameter mm mm Normal Grade I 60.046-60.085 60 -0.010 (59.990-60.000) Grade II 60.046-60.085 60 -0.020 (59.980-59.990) Normal I Grade I 59.944-59.983 59.9 -0.010 (59.890-59.900) Grade II 59.944-59.983 59.9 -0.020 (59.880-59.890) Fig. 184 REPAIR ADJUSTMENT DATA Cylinder Block (Dimensions) - Fig. 184 H eight of crank case (Dimension A & B) 304+0.1 mm C rankshaft axis from crankcase top surface 236.380/236.300 mm (above dimension with MB caps and front cover installed M aximum permissible Length wise 'C' 0.030 mm unevenness of crank Cross wise 'D' 0.015 mm case mating surface with cylinder head Piston & piston bore sizes : Stage Cylinder bore Piston stamped diameter diameter mm mm Grade A 86 ± 0.005 85.960 Grade B 86.010 ± 0.005 85.970 Grade C 86.020 ± 0.005 85.980 Piston to bore clearance 0.030/0.050mm (0.040 + 0.010mm) Piston rings : Max Lateral Butt Type Ring Clearance clearance of ring thickness in piston in cylinder groove bore mm mm mm 1st 1.5-0.010 0.080 0.2-0.4 Compression -0.030 2nd 1.5-0.010 0.060 0.5-0.7 Compression -0.030 3rd 3-0.010 0.060 0.2-0.5 Oil control -0.030 Piston cooling nozzle : l Nozzle opening pressure 2.7/3.2 bar l Jet height at pressure of 144 mm 2.9/3.5 bar. l Flow rate with SAE - 30 1.2 / 0.8 lpm. oil at 40 o C & @ 4bar. B D A C -0.010 -0.010