Kohler Courage SV710-740 Service Manual page 118

Section 9
Inspection and Reconditioning
Figure 9-16. Removing Oil Pump Mounting
Screws.
3. The outer Gerotor gear is typically held captive
in the oil pump housing. If the gear becomes
separated, see Step 1 under Reassembly for
proper reinstallation.
NOTE: The relief valve is sealed as part the oil pump
housing and not serviceable. Replace the oil
pump if the relief valve condition or function
is questionable in any way.
Figure 9-17. Oil Pump Components, Oil Pickup,
and Integral Relief Valve.
Inspection
Inspect the oil pump housing, gear, and rotors for
nicks, burrs, wear, or any visible damage. Check
the oil pickup screen for damage or restriction.
If any parts are worn or damaged, replace the oil
pump assembly. Disassembly of oil pump is not
recommended. If the retaining ring of main shaft is
removed for any reason, a new retaining ring should
be used. Do not install a used ring. See Figure 9-18.
9.12
Integral
Relief Valve
Geroter
Gears
Pickup
Retaining
Ring
Figure 9-18. Oil Pump Details.
Reassembly
1. Lubricate the outer Gerotor gear with oil. If the
outer gear was separated from the oil pump
housing examine the outer edges. On the Gerotor
Gears: one edge contains small molding marks
or dots, which must be matched to those on the
inner gear. If the dots are not visible on the inner
gear, install the outer gear with the dots down or
in. If the dots are visible, the outer gear should be
installed with the dots up or out. Not matching
the molding dots will result in reduced pump
output efficiency.
2. Install the oil pump inserting the center shaft into
the corresponding recess in oil pan. Secure the
oil pump by torquing the hex flange screws in
the indicated sequence to 11.2 N·m (100 in. lb.)
in new, as-cast holes, or 7.3 N·m (65 in. lb.) into
used holes. See Figures 9-19 and 9-20.
Figure 9-19. Installing Oil Pump.