Engine Service Manual

14
Specifi cations
KohlerEngines.com 17 690 01 Rev. F
CLEARANCE SPECIFICATIONS
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CH260/CH270 CH395 CH440
Crankcase
Governor Cross Shaft Bore I.D.
New
6.000/6.024 mm
(0.2362/0.2372 in.)
8.000/8.024 mm (0.3150/0.3159 in.)
Max. Wear Limit 6.037 mm
(0.2377 in.)
8.075 mm (0.3179 in.)
Crankshaft
End Play (free) 0.0508/0.254 mm (0.002/0.010 in.)
Ball Bearing Internal Clearance 0.003/0.025 mm
(0.0001/0.0010 in.)
0.005/0.020 mm
(0.0002/0.0008 in.)
0.006/0.020 mm
(0.0002/0.0008 in.)
Crankshaft O.D. (new)
PTO end 24.975/24.989 mm
(0.9833/0.9838 in.)
29.975/29.989 mm
(1.1801/1.1807 in.)
34.975/34.989 mm
(1.3770/1.3775 in.)
Flywheel end 30.014/30.027 mm
(1.1817/1.1822 in.)
35.009/35.027 mm
(1.3783/1.3790 in.)
Connecting Rod Journal O.D.
New 29.975/29.985 mm
(1.1801/1.1805 in.)
32.975/32.985 mm
(1.2982/1.2986 in.)
36.975/36.985 mm
(1.4557/1.4561 in.)
Max. Wear Limit 29.924 mm
(1.1781 in.)
32.92 mm
(1.2961 in.)
36.92 mm
(1.4535 in.)
Max. Taper
Max. Out-of-Round
2.5 microns (0.0001 in.)
12.7 microns (0.0005 in.)
Width 25.02/25.08 mm
(0.9850/0.9874 in.)
30.30/30.36 mm
(1.1930/1.1953 in.)
28.30/28.36 mm
(1.1142/1.1165 in.)
Runout (either end) 0.025 mm (0.001 in.)
Main Bearing I.D. (Crankcase/Closure Plate)
New (installed) 24.992/25.000 mm
(0.9839/0.9842 in.)
29.990/30.000 mm
1.1807/1.1811 in.)
34.988/35.000 mm
(1.3775/1.3779 in.)
Cylinder Bore
Bore I.D.
New
70.020/70.035 mm
(2.7570/2.7573 in.)
78.000/78.015 mm
(3.0709/3.0714 in.)
89.000/89.015 mm
(3.5039/3.5045 in.)
Max. Wear Limit 70.200 mm
(2.764 in.)
78.185 mm
(3.0781 in.)
89.185 mm
(3.5112 in.)
Max. Out-of-Round
Max. Taper
12.7 microns (0.0005 in.)
12.7 microns (0.0005 in.)
Cylinder Head
Max. Out-of-Flatness 0.08 mm
(0.003 in.)
0.1 mm (0.0039 in.)
Governor
Governor Cross Shaft -to-Crankcase Running
Clearance
0.020/0.069 mm (0.0008/0.0027 in.)
Governor Cross Shaft O.D.
New
5.955/5.980 mm
(0.2344/0.2354 in.)
7.955/7.980 mm
(0.3132/0.3142 in.)
Max. Wear Limit 5.942 mm
(0.2339 in.)
7.900 mm (0.3110 in.)
Governor Gear Shaft -to-Governor Gear Running
Clearance
0.022/0.134 mm (0.0009/0.0053 in.)
Governor Gear Shaft O.D.
New
Max. Wear Limit
6.016/6.028 mm (0.2368/0.2373 in.)
6.003 mm (0.2363 in.)
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Values are in Metric units. Values in parentheses are English equivalents.