Kohler Command PRO CS, Service Manual

Page: 132 / 162

Section 11
Reassembly
11.4
Figure 11-13. Installing Piston Using a Ring
Compressor.
6. Install the connecting rod cap to the connecting
rod so the dipper is down, and the match marks
are aligned. See Figure 11-14.
Torque in increments to:
CS4, CS6: 12 N·m (106 in. lb.)
CS8.5-12: 20 N·m (177 in. lb.)
b. The connecting rod offset is down and oil hole
is in the 3 o’clock position. Match marks
should align as shown with dipper down. See
Figure 11-11.
Figure 11-11. Connecting Rod Details.
2. Stagger the piston rings in the grooves until the
end gaps are 120º apart. See Figure 11-12. The oil
ring rails should also be staggered.
Figure 11-12. Piston Ring Gap Positioning.
3. Lubricate cylinder bore, piston, piston pin, and
piston rings with engine oil. Compress the rings
using a piston ring compressor.
4. Lubricate the crankshaft journal and connecting
rod bearing surfaces with engine oil.
5. Make sure ‘‘
∇
’’ stamping on piston is facing
down toward the base of the engine. Use a
hammer handle with a rubber grip and gently tap
the piston into the cylinder as shown in Figure
11-13. Be careful that the oil ring rails do not
spring free between the bottom of the ring
compressor and the top of the cylinder.
2
4
3
120º
120º
120º
Oil Hole
Match Marks
Dipper
Down
Figure 11-14. Rod Cap/Dipper Position.
Install Valve Tappets and Camshaft
1. Identify the valve tappets as to their proper
locations. Lubricate the face and stem of each
tappet with engine oil. Install each into their
respective bores.
2. Lubricate the camshaft bearing surfaces and cam
lobes as well as the camshaft bore in the
crankcase with engine oil.