Kohler Command Pro EFI ECH940 Service Manual page 76

Disassembly/Inspection and Service
Remove Breather Assembly
1. Remove fasteners securing breather assembly and
gasket to crankcase.
2. Carefully break gasket seal and remove all parts. Do
not pry on sealing surfaces as it could cause
damage resulting in leaks. Note assembly and
orientation of parts.
Remove Oil Reservoir and Pickup Screen
1. Remove screws securing oil reservoir and gasket to
engine.
2. Remove mounting screw and carefully work pickup
screen off end of pickup tube.
Remove Closure Plate Assembly
1. Remove screws securing closure plate to crankcase.
2. Locate protruding tabs on closure plate. Carefully
tap to break gasket seal. Do not pry on sealing
surfaces as this could cause leaks. Separate closure
plate from crankcase. Remove old gasket.
Inspection
Inspect oil seal in closure plate and replace it if worn or
damaged.
Inspect crankshaft bearing surface for wear or damage.
Replace bearing or closure plate assembly if required.
Oil Pump Assembly
Disassembly
1. Remove screws securing oil pump housing and
pickup tube clamp.
2. Remove oil pump housing and pickup tube from
closure plate.
3. Remove oil pump gerotor gears from closure plate
recess.
4. Remove oil pickup tube and inlet seal from oil pump
body.
5. Relief valve is a one-piece style, staked to oil pump
housing; removal should not be attempted, nor is
internal servicing possible. If a problem with relief
valve is encountered, oil pump should be replaced.
Inspection
Inspect oil pump housing, gerotor gears, and closure
plate recess for nicks, burrs, wear, or any visible
damage. Inspect inlet seal of pickup tube. If any parts
are worn or damaged, replace seal, oil pump or closure
plate as required.
76
Reassembly
Torque Sequence
1. Make sure recess in closure plate for oil pump
gerotor gears is clean.
2. Lubricate oil pump gerotor gears with grease
(Lubriplate
recess.
3. Lightly lubricate with oil and install inlet seal into oil
pump housing until it is fully seated.
4. Install O-ring in groove of oil pump housing. Use a
small quantity of grease to hold it in place.
5. Lightly lubricate I.D. of inlet seal with oil and carefully
insert ferruled end of pickup tube through grommet,
into oil pump housing. Position pickup tube so
outboard end faces up.
6. Install oil pump housing with pickup tube, over oil
pump boss and gears. Align all 3 screw locations.
7. Install clamp for pickup tube and fi nger tighten
screw. Check alignment of parts and torque oil pump
housing screws to 9.9 N·m (88 in. lb.) using
sequence below:
a. Install fastener into location 1 and lightly tighten
to position pump.
b. Install fastener into location 2 and fully torque to
recommended value.
c. Install fastener into location 3 and fully torque to
recommended value.
d. Finish torquing fastener in location 1 to
recommended value.
8. Torque clamp (pickup tube) mounting screw to
11.3 N·m (100 in. lb.) into new hole or 7.7 N·m
(68 in. lb.) into used hole.
KohlerEngines.com
3 3
1,4 1,4
2 2
100 or equivalent), and install into
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62 690 13 Rev. A