Connecting Rods; Oil Pump Assembly And Pressure Relief Valve; Closure Plate And Passage Cover; Torque Sequence For Passage Cover - Kohler Courage SV470 Service Manual

Section 9
Inspection and Reconditioning
1. Oil Control Ring (Bottom Groove): Install the
expander and then the rails. Make sure the ends
of the expander are not overlapped.
2. Compression Ring (Center Groove): Install the
center ring using a piston ring installation tool.
Make sure the identification mark is up when the
ring is installed.
3. Compression Ring (Top Groove): Install the top
ring using a piston ring installation tool. Make
sure the identification mark is up when the ring
is installed.

Connecting Rods

Inspection and Service
Check the bearing area (big end) for score marks and
excessive wear (measure running and side clearances;
refer to Section 1. Service replacement connecting rods
are available in STD crankpin size.
Oil Pump Assembly and Pressure Relief
Valve
Inspection and Service
The closure plate must be removed to inspect and
service the oil pump. Refer to the Disassembly and
Reassembly Sections (8 and 10) for removal and
reinstallation procedures. Check the oil pump and
gears for cracks, damage, wear, and smooth rotation.
Replace the pump if any binding is noted or reuse is
questionable in any way.
A pressure relief valve is built into the oil pump to
limit maximum pressure. It is not serviceable. If a
problem exists with the pressure relief valve, the oil
pump assembly should be replaced.

Closure Plate and Passage Cover

Inspection and Service
If disassembly was performed, inspect and ensure the
oil passages in the closure plate and the passage cover
are completely clean and not obstructed in any way.
See Figures 9-16 and 9-17. Check straightness of the
passage cover if required, against a flat surface.
9.12
Oil Passages
Figure 9-16. Oil Passages in Closure Plate.
Oil Passages
Figure 9-17. Oil Passages in Passage Cover.
Use a new passage cover gasket and install the passage
cover onto the closure plate. Reinstall the six mounting
screws and torque to 4.0 N·m (35 in. lb.), following the
sequence in Figure 9-18.
4
1
Figure 9-18. Torque Sequence for Passage Cover.
2
5
6
3