Kohler Command PRO EFI - Page 17

Specifi cations
1724 690 01 Rev. S KohlerEngines.com
CLEARANCE
SPECIFICATIONS
3
ECH630-ECH680 ECH730-ECH749 CH26 CH735 CH745
Camshaft
End Play (with shim) 0.101/0.406 mm (0.0040/0.0160 in.) 0.076/0.127 mm (0.0030/0.0050 in.)
Running Clearance 0.025/0.105 mm (0.001/0.004 in.) 0.025/0.063 mm (0.0010/0.0025 in.)
Bore I.D.
New
Max. Wear Limit
20.000/20.025 mm (0.7874/0.7884 in.)
20.038 mm (0.7889 in.)
20.000/20.025 mm (0.7874/0.7884 in.)
20.038 mm (0.7889 in.)
Bearing Surface O.D.
New
Max. Wear Limit
19.920/19.975 mm (0.7843/0.7864 in.)
19.914 mm (0.7840 in.)
19.962/19.975 mm (0.7859/0.7864 in.)
19.959 mm (0.7858 in.)
Connecting Rod
Connecting Rod-to-Crankpin
Running Clearance @ 21°C
(70°F)
New
Max. Wear Limit
0.043/0.073 mm (0.0017/0.0029 in.)
0.088 mm (0.0035 in.)
0.030/0.055 mm (0.0012/0.0022 in.)
0.070 mm (0.0028 in.)
Connecting Rod-to-Crankpin
Side Clearance 0.26/0.63 mm (0.0102/0.0248 in.) 0.26/0.63 mm (0.0102/0.0248 in.)
Connecting Rod-to-Piston Pin
Running Clearance @ 21°C
(70°F)
0.015/0.028 mm (0.0006/0.0011 in.) 0.015/0.028 mm (0.0006/0.0011 in.)
Piston Pin End I.D. @ 21°C
(70°F)
New
Max. Wear Limit
17.015/17.023 mm (0.6699/0.6702 in.)
17.036 mm (0.6707 in.)
17.015/17.023 mm (0.6699/0.6702 in.)
17.036 mm (0.6707 in.)
Crankcase
Governor Cross Shaft Bore I.D.
New
Max. Wear Limit
6 mm Shaft
New
Max. Wear Limit
8 mm Shaft
New
Max. Wear Limit
8.025/8.075 mm (0.3159/0.3179 in.)
8.088 mm (0.3184 in.)
6.025/6.050 mm (0.2372/0.2382 in.)
6.063 mm (0.2387 in.)
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.) 0.070/0.590 mm (0.0028/0.0230 in.)
End Play (w/thrust bearing
components) 0.070/1.190 mm (0.0028/0.0468 in.) 0.070/1.190 mm (0.0028/0.0468 in.)
Bore (in crankcase)
New
Max. Wear Limit
40.972/40.997 mm (1.6131/1.6141 in.)
41.011 mm (1.6146 in.)
40.965/41.003 mm (1.6128/1.6143 in.)
41.016 mm (1.6148 in.)
Bore (in closure plate)
New 40.974/41.000 mm (1.6131/1.6141 in.) 40.987/40.974 mm (1.6136/1.6131 in.)
Crankshaft to Sleeve Bearing
(closure plate) Running
Clearance
New 0.03/0.12 mm (0.001/0.005 in.) 0.03/0.09 mm (0.0012/0.0035 in.)
3
Values are in Metric units. Values in parentheses are English equivalents.