Kohler Command PRO ECH630 Service Manual page 130

Section 10
Reassembly
3. Turn the governor cross shaft clockwise until the
lower end of the shaft contacts the cylinder. Make
sure the cross shaft remains in this position while
installing the camshaft . See Figure 10-10.
4. Slide the camshaft into the bearing surface of the
crankcase, positioning the timing mark of the
camshaft gear at the 6 o'clock position. Make sure
that the camshaft gear and crankshaft gear mesh,
with both timing marks aligned. See Figure 10-10.
Governor Governor
Cross Shaft Cross Shaft
Figure 10-10. Aligning Crankshaft and Camshaft
Timing Marks.
Oil Pump Assembly
The oil pump is mounted inside the closure plate. If
service was required, and the oil pump was removed,
refer to the assembly procedures under Oil Pump
Assembly in Section 9.
Governor Gear Assembly
The governor gear assembly is located inside the
closure plate. If service was required, and the
governor was removed, refer to the assembly
procedures under Governor Gear Assembly in
Section 9.
Thrust Bearing, Washer and Shim
Some specifi cations use a needle type thrust bearing,
thrust washer and shim spacer to control the end
play of the crankshaft . See Figure 10-11. If these items
are noted during disassembly, make sure they are
reinstalled in the sequence shown in Figure 10-12. A
diff erent procedure will have to be followed to check
and adjust crankshaft end play on these models.
10.4
Figure 10-11. Thrust Bearing, Washer, and Shim
Used on Some Models.
Timing Timing
Marks Marks
Figure 10-12. Correct Sequence of Thrust Bearing,
Washer, and Shim in Closure Plate.
The race for the thrust bearing presses loosely into
the closure plate. If it is not already installed, push it
into the crankshaft bore inside the closure plate. Pack
the thrust bearing with heavy grease and stick the
bearing into the race. Wipe some grease on the face of
the thrust washer and stick it onto the thrust bearing.
Wipe some grease on the face of the original shim
spacer and stick it onto the thrust washer.
Install the closure plate onto the crankcase without
applying RTV sealant and secure it with only two or
three of the fasteners at this time. Use a dial indicator
to check the crankshaft end play. End play should
be 0.070/0.270 mm (0.0028/0.0100 in.). Shim spacers
are available in the three color coded thicknesses if
adjustment is needed.
Thrust Shim
Needle Thrust
Bearing
Bearing
Race
Closure
Plate
Thrust
Washer