Service Manual

8
Specifi cations
KohlerEngines.com 66 690 01 Rev. C
CLEARANCE SPECIFICATIONS
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LH630 LH640 LH685 LH690 LH750 LH755
Connecting Rod
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.)
Crankcase
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.)
Crankshaft
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
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.)
Cylinder Head
Max. Out-of-Flatness 0.076 mm (0.003 in.)
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Values are in Metric units. Values in parentheses are English equivalents.