Kohler Command PRO EFI PCV680 Service Manual page 11

CLEARANCE
SPECIFICATIONS 3
Piston, Piston Rings, and Piston Pin
Piston-to-Piston Pin Running
Clearance
Pin Bore I.D.
New
Max. Wear Limit
Pin O.D.
New
Max. Wear Limit
Top Compression Ring-to-
Groove Side Clearance
Middle Compression Ring-to-
Groove Side Clearance
Oil Control Ring-to-Groove Side
Clearance
Top Compression Ring End Gap
New Bore
Used Bore (Max.)
Center Compression Ring End
Gap
New Bore
Used Bore (Max.)
Thrust Face O.D. 7
Max. Wear Limit
Piston Thrust Face-to Cylinder
Bore Running Clearance
7
New
Valves and Valve Lifters
Hydraulic Lifter to Crankcase
Running Clearance
Intake Valve Stem-to-Valve
Guide Running Clearance
Exhaust Valve Stem-to-Valve
Guide Running Clearance
Intake Valve Guide I.D.
New
Max. Wear Limit
Exhaust Valve Guide I.D.
New
Max. Wear Limit
Valve Guide Reamer Size
Standard
0.25 mm O.S.
Intake Valve Minimum Lift
Exhaust Valve Minimum Lift
Nominal Valve Seat Angle
Values are in Metric units. Values in parentheses are English equivalents.
3
Measure 6 mm (0.236 in.) above bottom of piston skirt at right angles to piston pin.
7
24 690 31 Rev. D
PCV680, PCV740
0.006/0.017 mm (0.0002/0.0007 in.)
17.006/17.012 mm (0.6695/0.6698 in.)
17.025 mm (0.6703 in.)
16.995/17.000 mm (0.6691/0.6693 in.)
16.994 mm (0.6691 in.)
0.030/0.070 mm (0.001/0.0026 in.)
0.030/0.070 mm (0.001/0.0026 in.)
0.060/0.190 mm (0.0022/0.0073 in.)
0.189/0.277 mm (0.0074/0.0109 in.)
0.531 mm (0.0209 in.)
1.519/1.797 mm (0.0598/0.0708 in.)
2.051 mm (0.0808 in.)
82.978 mm (3.2668 in.)
82.833 mm (3.2611 in.)
0.019/0.062 mm (0.0007/0.0024 in.)
0.011/0.048 mm (0.0004/0.0019 in.)
0.040/0.078 mm (0.0016/0.0031 in.)
0.052/0.090 mm (0.0020/0.0035 in.)
7.040/7.060 mm (0.2772/0.2780 in.)
7.134 mm (0.2809 in.)
7.040/7.060 mm (0.2772/0.2780 in.)
7.159 mm (0.2819 in.)
7.050 mm (0.2776 in.)
7.300 mm (0.2874 in.)
8.07 mm (0.3177 in.)
8.07 mm (0.3177 in.)
KohlerEngines.com
Specifi cations
45°
11