Specifi cations CLEARANCE SPECIFICATIONS 3 LH630 LH640 LH685 LH690 LH750 LH755 Connecting Rod Crankcase Crankshaft Cylinder Bore Cylinder Head 3 Values are in Metric units. Values in parentheses are English equivalents. 8 KohlerEngines.com 66 690 01 Rev. C Connecting Rod-to-Crankpin Running Clearance New Max. Wear Limit 0.043/0.068 mm (0.0016/0.0026 in.) 0.083 mm (0.0032 in.) Connecting Rod-to-Crankpin Side Clearance 0.26/0.63 mm (0.0102/0.0248 in.) Connecting Rod-to-Piston Pin Running Clearance 0.015/0.028 mm (0.0006/0.0011 in.) Governor Cross Shaft Bore I.D. New Max.
Wear Limit 8.025/8.075 mm (0.3159/0.3179 in.) 8.088 mm (0.3184 in.) End Play (free) 0.070/0.590 mm (0.0028/0.0230 in.) Crankshaft Sleeve Bearing I.D. (crankcase) New Max. Wear Limit 40.974/40.987 mm (1.6131/1.6136 in.) 41.000 mm (1.6141 in.) Crankshaft Bore (in closure plate) New Max. Wear Limit 40.974/41.000 mm (1.6131/1.6141 in.) 41.038 mm (1.6156 in.) Crankshaft Bore (in closure plate)-to-Crankshaft Running Clearance New 0.039/0.087 mm (0.0015/0.0034 in.) Main Bearing Journals O.D. - New O.D. - Max. Wear Limit Max. Taper Max.
Out-of-Round 40.913/40.935 mm (1.6107/1.6116 in.) 40.84 mm (1.608 in.) 0.022 mm (0.0009 in.) 0.025 mm (0.0010 in.) Crankshaft to Sleeve Bearing (crankcase) Running Clearance New 0.039/0.074 mm (0.0015/0.0029 in.) Connecting Rod Journal O.D. - New O.D. - Max. Wear Limit Max. Taper Max. Out-of-Round 35.955/35.973 mm (1.4156/1.4163 in.) 35.94 mm (1.415 in.) 0.018 mm (0.0007 in.) 0.025 mm (0.0010 in.) Crankshaft T.I.R. PTO End, Crank in Engine Entire Crank, in V-Blocks 0.15 mm (0.0059 in.) 0.10 mm (0.0039 in.) Cylinder Bore I.D. New Max.
Wear Limit 77.000/77.025 mm (3.0315/3.0325 in.) 77.063 mm (3.0340 in.) 80.000/80.025 mm (3.1496/3.1506 in.) 80.065 mm (3.1522 in.) 83.006/83.031 mm (3.2679/3.2689 in.) 83.069 mm (3.2704 in.) Max. Taper Max. Out-of-Round 0.12 mm (0.0047 in.) 0.05 mm (0.0020 in.) Max. Out-of-Flatness 0.076 mm (0.003 in.)